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MicroHs 0.9.3.0 → 0.9.5.0

raw patch · 160 files changed

+22447/−19719 lines, 160 files

Files

Makefile view
@@ -12,7 +12,7 @@ GHCINCS= -ighc -isrc GHCWARNS= -Wall -Wno-unrecognised-warning-flags -Wno-x-partial GHCOPTS= -O-GHCEXTS= -XScopedTypeVariables -XPatternGuards -XTupleSections -XTypeSynonymInstances -XFlexibleInstances -XNoFieldSelectors -XOverloadedRecordDot -XDisambiguateRecordFields+GHCEXTS= -DNOTCABAL -XScopedTypeVariables -XPatternGuards -XTupleSections -XTypeSynonymInstances -XFlexibleInstances -XOverloadedRecordDot -XDisambiguateRecordFields # -XOverloadedRecordUpdate GHCPKGS= #-package mtl -package pretty -package temporary -package process GHCTOOL= # -F -pgmF Tools/convertX.sh@@ -38,7 +38,12 @@ bin/mhseval:	src/runtime/*.c src/runtime/config*.h 	@mkdir -p bin 	$(CCEVAL) src/runtime/comb.c -o bin/mhseval+	size bin/mhseval +bin/mhsevalgdb:	src/runtime/*.c src/runtime/config*.h+	@mkdir -p bin+	$(CC) $(CCWARNS) -g src/runtime/eval-$(CONF).c $(CCLIBS) src/runtime/comb.c -o bin/mhsevalgdb+ # Compile mhs with ghc bin/gmhs:	src/*/*.hs ghc/*.hs ghc/*/*.hs ghc/*/*/*.hs 	@mkdir -p bin@@ -95,8 +100,8 @@ # timecachecompile: bin/mhs 	@-rm -f .mhscache-	bin/mhs -CW AllOfLib-	bin/mhs +RTS -v -RTS -CR -isrc MicroHs.Main+	time bin/mhs +RTS -v -RTS -CW AllOfLib+	time bin/mhs +RTS -v -RTS -CR -isrc MicroHs.Main  # cachelib:@@ -125,7 +130,7 @@ everytestmhs:	bin/mhs bin/mhseval exampletest cachetest bootstrap runtestmhs nfibtest info  runtestmhs:-	cd tests; make MHS=../bin/mhs cache; make MHS="../bin/mhs +RTS -H2M -RTS -CR" info test+	cd tests; make MHS=../bin/mhs cache; make MHS="../bin/mhs +RTS -H4M -RTS -CR" info test  bootcombtest:	bin/gmhs bin/mhseval 	bin/gmhs -isrc -ogmhs.comb  MicroHs.Main
MicroHs.cabal view
@@ -1,6 +1,6 @@ cabal-version:       3.0 name:                MicroHs-version:             0.9.3.0+version:             0.9.5.0 synopsis:            A compiler for a subset of Haskell license:             Apache-2.0 license-file:        LICENSE@@ -30,6 +30,9 @@       tests/*.hs       tests/*.ref +data-files:+      lib/**/*.hs+ source-repository head     type:     git     location: https://github.com/augustss/MicroHs@@ -39,7 +42,8 @@   hs-source-dirs:      ghc src   ghc-options:         -Wall -Wno-unrecognised-warning-flags -Wno-x-partial -main-is MicroHs.Main   main-is:             MicroHs/Main.hs-  default-extensions:  ScopedTypeVariables PatternGuards TupleSections TypeSynonymInstances FlexibleInstances NoFieldSelectors OverloadedRecordDot DisambiguateRecordFields+  default-extensions:  ScopedTypeVariables PatternGuards TupleSections TypeSynonymInstances MultiParamTypeClasses+                       FlexibleInstances OverloadedRecordDot DisambiguateRecordFields StandaloneKindSignatures   other-modules:       MicroHs.Abstract                        MicroHs.Compile                        MicroHs.CompileCache@@ -65,11 +69,13 @@                        MicroHs.TypeCheck                        Text.ParserComb                        System.Console.SimpleReadline-                       Control.Alternative                        Data.Double+                       Data.Integer                        Compat                        PrimTable                        System.IO.MD5+                       Paths_MicroHs+  autogen-modules:     Paths_MicroHs   build-depends:       base         >= 4.10 && < 4.20,                        containers   >= 0.5 && < 0.8,                        deepseq      >= 1.1 && < 1.6,
README.md view
@@ -3,11 +3,12 @@ It uses combinators for the runtime execution.  The runtime system has minimal dependencies, and can be compiled even for micro-controllers.+The `boards/` directory contains some sample, e.g., some sample code for an STM32F407G-DISC1 board.  The compiler can compile itself.  ## Compiling MicroHs-There are two different ways to compile MicroHs+There are two different ways to compile MicroHs: * Using GHC with standard `Prelude` and libraries. `Makefile` target `bin/gmhs` * Using the included combinator file and runtime.  `Makefile` target `bin/mhs` @@ -16,27 +17,31 @@  Compiling MicroHs is really best done using `make`, but there is also a `MicroHs.cabal` file for use with `cabal`.  This only builds what corresponds to the first target.+Doing `cabal install` will install the compiler.+Note that `mhs` built with ghc does not have all the functionality.  Also note that there is no need to have a Haskell compiler to run MicroHs. All you need is a C compiler, and MicroHs can bootstrap, given the included combinator file. -To install `mhs` use `make install`.  You also need to set the environment variable `MHSDIR`.+To install `mhs` use `make install`.  By default this copies the files to `/usr/local`,+but this can be overridden by `make PREFIX=dir install`.+You also need to set the environment variable `MHSDIR`.  To compile on Windows make sure `cl` is in the path, and then use `nmake` with `Makefile.windows`. +The compiler can also be used with emscripten to produce JavaScript, see `Makefile.emscripten`.+ ## Language The language is an extended subset of Haskell-98.  Differences:  * Top level definitions must have a type signature.- * Type variables need an explicit `forall`.- * There is no `Read` class.+ * Kind variables need an explicit `forall`.  * There is only deriving for `Eq`, `Ord`, `Show`, and `Typeable`.- * Indentation is handled a little differently.- * The `Prelude` has to be imported explicitly.  * Polymorphic types/kinds are never inferred; use a type/kind signature if you need it.  * A module must have an export list.  * The `default` list is empty, except in the interactive system.+ * No lazy patterns (`~pat`)  * Always enabled extension:    * ConstraintKinds    * DuplicateRecordFields@@ -53,8 +58,8 @@    * MultiParamTypeClasses    * NamedFieldPuns    * NegativeLiterals-   * NoFieldSelectors    * NoMonomorphismRestriction+   * NoStarIsType    * OverlappingInstances    * OverloadedRecordDot    * OverloadedRecordUpdate@@ -63,8 +68,8 @@    * RecordWildCards    * QualifiedDo    * ScopedTypeVariables-   * StarIsType-   * TupleSections+   * StandaloneKindSignatures+   * TupleSections (only pairs right now)    * TypeLits    * TypeSynonymInstances    * UndecidableInstances@@ -72,6 +77,7 @@    * ViewPatterns  * `main` in the top module given to `mhs` serves at the program entry point.  * Many things that should be an error (but which are mostly harmless) are not reported.+ * Text file I/O uses UTF8, but the source code does not allow Unicode.  * More differences that I don't remember right now.  ## Example@@ -102,8 +108,9 @@ ```  ## Libraries-There are a number of libraries that have some of the standard Haskell functions.-But in general, the `Prelude` contains less.+The `Prelude` contains the functions from the Haskell Report and a few extensions,+with the notable exception that `Foldable` and `Traversable` are not part of the `Prelude`.+They can be imported separately, though.  ## Types There are some primitive data types, e.g `Int`, `IO`, `Ptr`, and `Double`.@@ -126,7 +133,7 @@ ### Compiler flags * `--version` show version number * `-iDIR` add `DIR` to search path for modules-* `-oFILE` output file.  If the `FILE` ends in `.comb` it will produce a textual combinator file.  If `FILE` ends in `.c` it will produce a C file with the combinators.  For all other `FILE` it will compiler the combinators together with the runtime system to produce a regular executable.+* `-oFILE` output file.  If the `FILE` ends in `.comb` it will produce a textual combinator file.  If `FILE` ends in `.c` it will produce a C file with the combinators.  For all other `FILE` it will compile the combinators together with the runtime system to produce a regular executable. * `-r` run directly * `-v` be more verbose, flag can be repeated * `-CW` write compilation cache to `.mhscache` at the end of compilation@@ -142,7 +149,7 @@ with parsing taking 91ms and typecheck&desugar taking 193ms.  With the `-C` flag the compiler writes out its internal cache of compiled modules to the file `.mhscache`-at the end of compilation.  And a startup it reads this file if it exists, and then validates the contents+at the end of compilation.  At startup it reads this file if it exists, and then validates the contents by an MD5 checksum for all the files in the cache. This can make compilation much faster since the compiler will not parse and typecheck a module if it is in the cache.@@ -232,15 +239,16 @@  ### Records MicroHs implements the record dot extensions.-So accessing a field `a` in record `r` is written `r.a`.+So accessing a field `a` in record `r` is written `r.a`, as well as the usual `a r`.+The former is overloaded and can access any `a` field, whereas the latter is the usual monomorphic field selector. Updating a field has the usual Haskell syntax `r{ a = e }`, but the type is overloaded so this can update the `a` field in any record.-The typeclass `HasField` captures this.  `HasField "name" rec ty` expresses that the record type `rec` has a field `name` with type `ty`.+The typeclasses `HasField` and `SetField` capture this.+`HasField "name" rec ty` expresses that the record type `rec` has a field `name` with type `ty` that can be extracted with `getField`.+`SetField "name" rec ty` expresses that the record type `rec` has a field `name` with type `ty` that can be set `setField`.+ Record updates can also update nested fields, e.g., `r{ a.b.c = e }`.  Note that this will not easily work in GHC, since GHC does not fully implement `OverloadedRecordUpdate`.  When GHC decides how to do it, MicroHs will follow suit. -Haskell2010 code using records cannot be compiled directly with MicroHs, since the field names are not automatically selector functions.-Given a field `foo` in a record you can use `foo` as a functions, in MicroHs you have to say `(.foo)` to get the selector function.- Note that record updates cannot change the type of polymorphic fields.  ### Features@@ -267,14 +275,14 @@  ### Portability The C code for the evaluator does not use any special features, and should be-portable to many platforms.  It has mostly been test with MacOS and Linux,+portable to many platforms.  It has mostly been tested with MacOS and Linux, and somewhat with Windows. -The code has only been tested on 64 bit platforms, so again, there are lurking problems+The code has mostly been tested on 64 bit platforms, so again, there are lurking problems with other word sizes, but they should be easy to fix.  The `src/runtime/` directory contains configuration files for different platform.-Edit `src/runtime/eval.c` to `#include` the right one.+Use the appropriate `src/runtime/eval-`*platform*`.c`.  ## Bootstrapping The compiler can compile itself.  To replace `bin/mhs` with a new version,@@ -298,3 +306,5 @@   * A: The combinator file is rather verbose.  The combinator file        for the compiler shrinks from 350kB to 75kB when compressed with upx.        The evaluator alone is about 70kB (26kB compressed with upx).++
Tools/Addcombs.hs view
@@ -2,6 +2,7 @@ import Prelude import Data.Char import System.Environment+import System.IO  chunkify :: Int -> [Char] -> [[Char]] chunkify n [] = []@@ -14,17 +15,19 @@  main :: IO () main = do-{-   args <- getArgs-  let fn = case args of { [a] -> a; _ -> error "Usage: Addcombs file" }-  file <- readFile fn--}-  hSetBinaryMode stdin True-  file <- hGetContents stdin+  let (ifn, ofn) = case args of { [a,b] -> (a,b); _ -> error "Usage: Addcombs in-file out-file" }+  ifile <- openBinaryFile ifn ReadMode+  ofile <- openFile ofn WriteMode++  file <- hGetContents ifile   let size = length file       chunks = chunkify 20 file-  putStrLn $ "unsigned char combexprdata[] = {"-  mapM_ (putStrLn . showChunk) chunks-  putStrLn "0 };"-  putStrLn "unsigned char *combexpr = combexprdata;"-  putStrLn $ "int combexprlen = " ++ show size ++ ";"+  hPutStrLn ofile $ "static unsigned char combexprdata[] = {"+  mapM_ (hPutStrLn ofile . showChunk) chunks+  hPutStrLn ofile "};"+  hPutStrLn ofile "const unsigned char *combexpr = combexprdata;"+  hPutStrLn ofile $ "const int combexprlen = " ++ show size ++ ";"+--  hClose ifile+--  hClose ofile+
Tools/Compress.hs view
@@ -2,6 +2,7 @@ import Prelude import Data.Map as M import Data.Char+import System.Environment import System.IO --import Debug.Trace @@ -63,9 +64,14 @@  main :: IO () main = do-  f <- hGetContents stdin+  args <- getArgs+  let (ifn, ofn) = case args of { [a,b] -> (a,b); _ -> error "Usage: Compress in-file out-file" }+  ifile <- openFile ifn ReadMode+  f <- hGetContents ifile   when (any bad f) $     error "Non-printable ASCII in input"   let bs = compress initTable f []-  hSetBinaryMode stdout True-  putStr $ 'Z' : (map chr $ toBytes bs)+  ofile <- openBinaryFile ofn WriteMode+  hPutStr ofile $ 'Z' : (map chr $ toBytes bs)+  hClose ifile+  hClose ofile
generated/mhs.c view
@@ -1,15904 +1,14895 @@ static unsigned char data[] = 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41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,41,-41,41,41,41,41,41,41,41,41,-};-unsigned char *combexpr = data;-int combexprlen = 317989;+118,55,46,48,10,49,53,56,56,10,65,32,95,48,32,95,50,51,32,64,+32,95,51,51,32,64,32,66,32,95,48,32,95,50,51,32,64,32,95,53,+52,32,64,32,64,32,67,39,66,32,66,32,67,32,83,39,32,83,32,64,+32,67,39,32,67,32,64,32,66,32,83,39,32,67,39,32,64,32,95,54,+51,32,95,54,53,32,64,32,102,114,111,109,85,84,70,56,32,34,45,45,+118,101,114,115,105,111,110,34,32,64,32,64,32,64,32,64,32,66,32,67,+32,67,39,32,83,39,32,64,32,95,54,54,32,95,54,32,67,32,95,54,+55,32,95,54,53,32,64,32,64,32,79,32,35,52,53,32,64,32,75,32,+64,32,64,32,64,32,95,49,48,53,32,35,49,32,64,32,64,32,64,32,+64,32,95,49,53,52,54,32,64,32,64,32,64,32,67,39,32,67,39,32,+67,39,32,80,32,64,32,64,32,64,32,67,39,32,67,39,66,32,64,32,+95,49,53,56,51,32,64,32,95,54,53,49,32,95,53,49,56,32,102,114,+111,109,85,84,70,56,32,34,99,111,109,109,97,110,100,45,108,105,110,101,+34,32,64,32,64,32,35,48,32,64,32,35,48,32,64,32,64,32,64,32,+64,32,75,50,32,95,50,49,57,32,102,114,111,109,85,84,70,56,32,34,+85,115,97,103,101,58,32,109,104,115,32,91,45,118,93,32,91,45,108,93,+32,91,45,114,93,32,91,45,67,93,32,91,45,84,93,32,91,45,105,80,+65,84,72,93,32,91,45,111,70,73,76,69,93,32,91,77,111,100,117,108,+101,78,97,109,101,93,34,32,64,32,64,32,64,32,64,32,64,32,64,32,+64,32,95,50,54,32,95,49,50,50,32,64,32,95,49,53,51,32,102,114,+111,109,85,84,70,56,32,34,77,105,99,114,111,72,115,44,32,118,101,114,+115,105,111,110,32,34,32,64,32,64,32,95,49,53,51,32,95,49,53,56,+52,32,64,32,95,49,53,51,32,102,114,111,109,85,84,70,56,32,34,44,+32,99,111,109,98,105,110,97,116,111,114,32,102,105,108,101,32,118,101,114,+115,105,111,110,32,34,32,64,32,64,32,95,49,53,56,49,32,64,32,64,+32,64,32,64,32,64,32,64,32,67,39,32,83,32,64,32,67,39,32,83,+32,64,32,67,39,32,83,32,64,32,67,39,32,83,32,64,32,67,39,32,+83,32,64,32,66,32,83,32,83,39,32,95,49,53,52,52,32,64,32,66,+32,95,51,50,49,32,64,32,95,54,54,32,67,32,95,52,48,32,95,54,+53,32,64,32,64,32,102,114,111,109,85,84,70,56,32,34,45,118,34,32,+64,32,64,32,64,32,64,32,64,32,95,54,51,32,95,54,53,32,64,32,+102,114,111,109,85,84,70,56,32,34,45,114,34,32,64,32,64,32,64,32,+64,32,64,32,66,32,66,32,95,53,57,32,79,32,35,52,54,32,64,32,+75,32,64,32,64,32,64,32,64,32,67,39,66,32,66,32,95,53,57,32,+64,32,67,32,95,49,53,51,32,64,32,102,114,111,109,85,84,70,56,32,+34,47,108,105,98,34,32,64,32,64,32,64,32,64,32,66,32,95,49,53,+56,53,32,64,32,95,54,48,32,95,49,53,55,51,32,95,49,54,53,32,+64,32,102,114,111,109,85,84,70,56,32,34,45,105,34,32,64,32,64,32,+64,32,64,32,64,32,64,32,64,32,64,32,66,32,95,50,54,32,95,52,+56,48,32,64,32,64,32,67,39,32,95,49,53,51,32,64,32,66,32,95,+49,53,56,53,32,64,32,95,54,48,32,95,49,53,55,51,32,95,49,54,+53,32,64,32,102,114,111,109,85,84,70,56,32,34,45,111,34,32,64,32,+64,32,64,32,64,32,64,32,79,32,102,114,111,109,85,84,70,56,32,34,+111,117,116,46,99,111,109,98,34,32,64,32,64,32,75,32,64,32,64,32,+64,32,64,32,64,32,95,54,51,32,95,54,53,32,64,32,102,114,111,109,+85,84,70,56,32,34,45,108,34,32,64,32,64,32,64,32,64,32,66,32,+95,49,54,56,32,95,49,53,56,54,32,64,32,64,32,83,39,32,95,53,+54,32,64,32,95,54,51,32,95,54,53,32,64,32,102,114,111,109,85,84,+70,56,32,34,45,67,34,32,64,32,64,32,64,32,95,54,51,32,95,54,+53,32,64,32,102,114,111,109,85,84,70,56,32,34,45,67,82,34,32,64,+32,64,32,64,32,64,32,64,32,64,32,66,32,95,49,54,56,32,95,49,+53,56,54,32,64,32,64,32,83,39,32,95,53,54,32,64,32,95,54,51,+32,95,54,53,32,64,32,102,114,111,109,85,84,70,56,32,34,45,67,34,+32,64,32,64,32,64,32,95,54,51,32,95,54,53,32,64,32,102,114,111,+109,85,84,70,56,32,34,45,67,87,34,32,64,32,64,32,64,32,64,32,+64,32,64,32,95,54,51,32,95,54,53,32,64,32,102,114,111,109,85,84,+70,56,32,34,45,84,34,32,64,32,64,32,64,32,64,32,64,32,64,32,+95,52,52,51,32,67,32,95,54,55,32,95,54,53,32,64,32,64,32,102,+114,111,109,85,84,70,56,32,34,45,45,34,32,64,32,64,32,64,32,64,+32,64,32,95,50,55,53,32,79,32,35,52,54,32,64,32,75,32,64,32,+64,32,64,32,64,32,64,32,58,49,53,56,55,32,64,10,65,32,95,52,+51,32,58,49,53,56,54,32,64,10,65,32,89,32,66,32,80,32,75,32,+64,32,64,32,83,39,32,67,32,64,32,67,32,83,39,32,64,32,64,32,+66,32,67,32,95,53,57,32,64,32,64,32,64,32,64,32,64,32,58,49,+53,56,53,32,64,10,65,32,102,114,111,109,85,84,70,56,32,34,48,46,+57,46,51,46,48,34,32,64,32,58,49,53,56,52,32,64,10,65,32,66,+32,83,39,32,83,39,32,95,48,32,95,50,51,32,64,32,64,32,64,32,+83,32,83,39,32,83,39,32,64,32,95,49,50,52,32,95,49,53,52,56,+32,64,32,95,49,50,56,32,64,32,64,32,83,39,32,66,32,64,32,66,+32,95,48,32,95,50,51,32,64,32,64,32,95,50,56,50,32,64,32,64,+32,66,32,66,32,66,32,95,49,56,32,95,49,48,32,64,32,95,50,52,+57,32,64,32,64,32,64,32,64,32,95,49,53,48,57,32,64,32,64,32,+64,32,64,32,83,39,32,66,32,64,32,66,32,95,48,32,95,50,51,32,+64,32,64,32,95,50,56,50,32,64,32,64,32,83,39,32,67,39,32,83,+39,32,95,48,32,95,50,51,32,64,32,64,32,64,32,64,32,95,49,53,+48,57,32,64,32,66,32,66,32,85,32,64,32,64,32,67,39,66,32,66,+39,32,66,39,32,66,32,95,49,48,54,32,95,50,51,32,64,32,64,32,+67,39,32,95,50,54,32,64,32,66,32,95,49,52,54,32,95,50,49,32,+64,32,64,32,67,32,95,49,53,50,32,64,32,35,48,32,64,32,64,32,+64,32,95,50,54,32,95,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,64,32,64,32,64,32,64,+32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,+32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,+32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,+32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,64,32,125,+};+unsigned char *combexpr = data;+int combexprlen = 297820;
ghc/Compat.hs view
@@ -3,7 +3,7 @@ {-# OPTIONS_GHC -Wno-orphans #-} {-# LANGUAGE DataKinds #-} -- Functions for GHC that are defined in the UHS libs.-module Compat(module Compat) where+module Compat(module Compat, Type) where --import Control.Exception import Data.Char import Data.Maybe@@ -13,24 +13,10 @@ import Control.Exception import Data.List import GHC.Records+import GHC.Types import System.Environment import System.IO -------- Int ----------_integerToInt :: Integer -> Int-_integerToInt = fromInteger--_integerToDouble :: Integer -> Double-_integerToDouble = fromIntegral---- Same as in Data.Integer-_integerToIntList :: Integer -> [Int]-_integerToIntList i | i < 0 = -1 : to (-i)-                    | otherwise =  to i-  where to 0 = []-        to n = fromInteger r : to q  where (q, r) = quotRem n 2147483648- ------- List --------  elemBy :: (a -> a -> Bool) -> a -> [a] -> Bool@@ -73,10 +59,16 @@  ------- Exception -------- -newtype Exn = Exn String-  deriving (Show)-instance Exception Exn+--newtype Exn = Exn String+--  deriving (Show)+--instance Exception Exn +type Exn = SomeException++exnToString :: Exn -> String+exnToString = trunc . show+  where trunc = head . lines+ ------- IO --------  openFileM :: FilePath -> IOMode -> IO (Maybe Handle)@@ -91,9 +83,6 @@  ------- Read -------- -readInteger :: String -> Integer-readInteger = read- -- Convert string in scientific notation to a rational number. readRational :: String -> Rational readRational "" = undefined@@ -105,19 +94,19 @@         (ds1, cr1) | ('.':r1) <- cr1                   -> rat2 f1 r1                    | (c:r1)   <- cr1, toLower c == 'e' -> rat3 f1 r1                    | otherwise                         -> f1-          where f1 = toRational (readInteger ds1)+          where f1 = toRational (read ds1 :: Integer)      rat2 f1 s2 =       case span isDigit s2 of         (ds2, cr2) | (c:r2) <- cr2, toLower c == 'e' -> rat3 f2 r2                    | otherwise                       -> f2-          where f2 = f1 + toRational (readInteger ds2) * 10 ^^ (negate $ length ds2)+          where f2 = f1 + toRational (read ds2 :: Integer) * 10 ^^ (negate $ length ds2)      rat3 f2 ('+':s) = f2 * expo s     rat3 f2 ('-':s) = f2 / expo s     rat3 f2      s  = f2 * expo s -    expo s = 10 ^ readInteger s+    expo s = 10 ^ (read s :: Int)  partitionM :: Monad m => (a -> m Bool) -> [a] -> m ([a], [a]) partitionM _ [] = return ([], [])@@ -154,6 +143,10 @@  _isWindows :: Bool _isWindows = False++-- This cannot be implemented with GHC.+rnfNoErr :: forall a . a -> ()+rnfNoErr _ = ()  ----------------------------------- -- Virtual fields for tuples.
− ghc/Control/Alternative.hs 
@@ -1,7 +0,0 @@-module Control.Alternative(-  Alternative(..),-  guard,-  asum,-  ) where-import Control.Applicative-import Control.Monad
+ ghc/Data/Integer.hs view
@@ -0,0 +1,11 @@+module Data.Integer(_integerToIntList, readInteger) where++-- Same as in Data.Integer+_integerToIntList :: Integer -> [Int]+_integerToIntList i | i < 0 = -1 : to (-i)+                    | otherwise =  to i+  where to 0 = []+        to n = fromInteger r : to q  where (q, r) = quotRem n 2147483648++readInteger :: String -> Integer+readInteger = read
ghc/MicroHs/Instances.hs view
@@ -1,15 +1,35 @@ {-# OPTIONS_GHC -Wno-orphans #-}-module MicroHs.Instances() where+{-# LANGUAGE CPP #-}+module MicroHs.Instances(getMhsDir, compiledWithGHC) where import Control.DeepSeq+import System.Environment import MicroHs.CompileCache import MicroHs.Ident import MicroHs.Exp import MicroHs.Expr+#if !defined(NOTCABAL)+import Paths_MicroHs +getMhsDir :: IO (Maybe FilePath)+getMhsDir = do+  md <- lookupEnv "MHSDIR"+  case md of+    Just _ -> return md+    Nothing -> Just <$> getDataDir+#else++getMhsDir :: IO (Maybe FilePath)+getMhsDir = lookupEnv "MHSDIR"++#endif+ instance NFData Cache where rnf _ = ()  instance NFData Exp where rnf (Var i) = rnf i; rnf (App f a) = rnf f `seq` rnf a; rnf (Lam i e) = rnf i `seq` rnf e; rnf (Lit l) = rnf l -instance NFData Lit where rnf (LInt i) = rnf i; rnf (LInteger i) = rnf i; rnf (LDouble d) = rnf d; rnf (LRat r) = rnf r; rnf (LChar c) = rnf c; rnf (LStr s) = rnf s; rnf (LPrim s) = rnf s; rnf (LForImp s) = rnf s; rnf (LTick s) = rnf s+instance NFData Lit where rnf (LInt i) = rnf i; rnf (LInteger i) = rnf i; rnf (LDouble d) = rnf d; rnf (LRat r) = rnf r; rnf (LChar c) = rnf c; rnf (LStr s) = rnf s; rnf (LPrim s) = rnf s; rnf (LForImp s) = rnf s; rnf (LTick s) = rnf s; rnf (LUStr s) = rnf s  instance NFData Ident where rnf (Ident _ s) = rnf s++compiledWithGHC :: Bool+compiledWithGHC = True
ghc/PrimTable.hs view
@@ -43,6 +43,7 @@   , comb "K2" (\ x _y _z -> x)   , comb "K3" (\ x _y _z _w -> x)   , comb "K4" (\ x _y _z _w _v -> x)+  , comb "C'B" (\ x y z w -> x z (y w))    , arith "+" (+)   , arith "-" (-)@@ -155,11 +156,11 @@     ioret = return     -- Can't implement this     ioprint :: Handle -> a -> IO ()-    ioprint h _ = hPutStrLn h "no IO.print"+    ioprint h _ = hPutStrLn h "ghc does not support cprint"     ioserialize :: Handle -> a -> IO ()-    ioserialize h _ = hPutStrLn h "no IO.serialize"+    ioserialize h _ = hPutStrLn h "ghc does not support serialize"     iodeserialize :: Handle -> IO a-    iodeserialize _ = error "iodeserialize"+    iodeserialize _ = error "ghc does not support deserialize"      iogetargs :: IO Any     iogetargs = do@@ -200,15 +201,18 @@   let s = toString acfun   in --      trace ("dynsym: " ++ show s) $-      fromMaybe (error $ "cops: " ++ s) $ lookup s cops+      fromMaybe (error $ "ghc: unimplemented FFI: " ++ s) $ lookup s cops  cops :: [(String, Any)] cops =-  [ comb "fputc" fputc-  , comb "getTimeMilli" getTimeMilli+  [ comb "getTimeMilli" getTimeMilli+  , comb "fputc" fputc   , comb "fgetc" fgetc   , comb "fopen" fopen   , comb "fclose" fclose+  , comb "putb"  putb+  , comb "add_FILE" add_FILE+  , comb "add_utf8" add_utf8   , comb "free"  free   , comb "exp"   (fio exp)   , comb "log"   (fio log)@@ -235,6 +239,15 @@      fio2 :: (Double -> Double -> Double) -> (Double -> Double -> IO Double)     fio2 f = \ x y -> return (f x y)++    add_FILE :: Handle -> IO Handle+    add_FILE h = return h++    add_utf8 :: Handle -> IO Handle+    add_utf8 h = do hSetEncoding h utf8; return h++    putb :: Int -> Handle -> IO ()+    putb c h = hPutChar h (chr c)      fputc :: Int -> Handle -> IO Int     fputc c h = hPutChar h (chr c) >> return 0
lib/AllOfLib.hs view
@@ -1,12 +1,14 @@+-- Copyright 2023,2024 Lennart Augustsson+-- See LICENSE file for full license. module AllOfLib(main) where -- Only used to save the compilation cache. import Compat-import Control.Alternative import Control.Applicative import Control.DeepSeq import Control.Error import Control.Exception import Control.Monad+import Control.Monad.Fail import Control.Monad.ST import Control.Monad.State.Strict import Data.Bits@@ -23,9 +25,11 @@ import Data.Enum import Data.Eq import Data.Floating+import Data.Foldable import Data.Fractional import Data.Function import Data.Functor+import Data.Functor.Const import Data.Functor.Identity import Data.IOArray import Data.IORef@@ -49,15 +53,18 @@ import Data.Ratio_Type import Data.Real import Data.RealFloat+import Data.RealFrac import Data.Records import Data.Semigroup import Data.STRef+import Data.Traversable import Data.Tuple import Data.Typeable import Data.TypeLits import Data.Void import Data.Word import Data.Word8+import Data.ZipList import Debug.Trace import Foreign.C.String import Foreign.Marshal.Alloc@@ -67,15 +74,19 @@ import Foreign.Storable import GHC.Stack import GHC.Types+import Numeric import Prelude import Primitives import System.Console.SimpleReadline import System.Directory import System.Environment+import System.Exit import System.IO import System.IO.MD5+import System.IO.PrintOrRun import System.Process import Text.PrettyPrint.HughesPJ+import Text.Read import Text.Show import Text.String import Unsafe.Coerce
lib/Compat.hs view
@@ -1,4 +1,5 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Compat() where+import Prelude()              -- do not import Prelude -- So we can import Compat, which is full of stuff for GHC.
− lib/Control/Alternative.hs 
@@ -1,25 +0,0 @@-module Control.Alternative(module Control.Alternative) where-import Primitives-import Control.Applicative-import Data.Bool_Type-import Data.Functor-import Data.List_Type--infixl 3 <|>--class Applicative f => Alternative f where-    empty :: forall a . f a-    (<|>) :: forall a . f a -> f a -> f a--    some :: forall a . f a -> f [a]-    some a = (:) <$> a <*> many a--    many :: forall a . f a -> f [a]-    many a = some a <|> pure []--guard :: forall f a . Alternative f => Bool -> f ()-guard b = if b then pure () else empty--asum :: forall f a . Alternative f => [f a] -> f a-asum [] = empty-asum (a:as) = a <|> asum as
lib/Control/Applicative.hs view
@@ -1,22 +1,60 @@-module Control.Applicative(module Control.Applicative) where+module Control.Applicative(+  Applicative(..),+  (<$>), (<$), (<**>),+  liftA, liftA3,+  Alternative(..),+  guard, asum, optional,+  ) where+import Prelude()              -- do not import Prelude import Primitives  -- for fixity+import Data.Bool_Type import Data.Functor import Data.Function+import Data.List_Type+import Data.Maybe_Type -infixl 4 <*>-infixl 4 *>-infixl 4 <*+infixl 4 <*>, *>, <*, <**>  class Functor f => Applicative f where-  pure  :: forall a . a -> f a-  (<*>) :: forall a b . f (a -> b) -> f a -> f b-  (*>)  :: forall a b . f a -> f b -> f b-  (<*)  :: forall a b . f a -> f b -> f a-  a1 *> a2 = (id <$ a1) <*> a2-  a1 <* a2 = (const <$> a1) <*> a2+  pure        :: forall a . a -> f a+  (<*>)       :: forall a b . f (a -> b) -> f a -> f b+  (*>)        :: forall a b . f a -> f b -> f b+  (<*)        :: forall a b . f a -> f b -> f a+  liftA2      :: forall a b c . (a -> b -> c) -> f a -> f b -> f c+  (<*>)        = liftA2 id+  a1 *> a2     = (id <$ a1) <*> a2+  a1 <* a2     = const <$> a1 <*> a2+  liftA2 f a b = f <$> a <*> b -liftA2 :: forall f a b c . Applicative f => (a -> b -> c) -> f a -> f b -> f c-liftA2 f a b = f <$> a <*> b+liftA :: forall f a b . Applicative f => (a -> b) -> f a -> f b+liftA f a = pure f <*> a  liftA3 :: forall f a b c d . Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d liftA3 f a b c = f <$> a <*> b <*> c++(<**>) :: forall f a b . Applicative f => f a -> f (a -> b) -> f b+(<**>) = liftA2 (\ a f -> f a)++-------------------------------------------------------++infixl 3 <|>++class Applicative f => Alternative f where+    empty :: forall a . f a+    (<|>) :: forall a . f a -> f a -> f a++    some :: forall a . f a -> f [a]+    some a = (:) <$> a <*> many a++    many :: forall a . f a -> f [a]+    many a = some a <|> pure []++guard :: forall f a . Alternative f => Bool -> f ()+guard b = if b then pure () else empty++asum :: forall f a . Alternative f => [f a] -> f a+asum [] = empty+asum (a:as) = a <|> asum as++optional :: forall f a . Alternative f => f a -> f (Maybe a)+optional a = Just <$> a <|> pure Nothing
lib/Control/Arrow.hs view
@@ -1,4 +1,5 @@ module Control.Arrow(module Control.Arrow) where+import Prelude()              -- do not import Prelude  first :: forall a b c . (a -> c) -> (a, b) -> (c, b) first f (a, b) = (f a, b)
+ lib/Control/Concurrent.hs view
@@ -0,0 +1,25 @@+module Control.Concurrent(+  ThreadId,+  forkIO,+  ) where+import Prelude()              -- do not import Prelude+import Primitives+import Prelude+import Data.Word++newtype ThreadId = ThreadId (Ptr ())++instance Show ThreadId where+  show (ThreadId p) = "ThreadId#" ++ show (primPtrToWord p)++instance Eq ThreadId where+  ThreadId p == ThreadId q  =  primPtrEQ p q++instance Ord ThreadId where+  ThreadId p `compare` ThreadId q = p `compare` q++primForkIO :: IO () -> IO (Ptr ())+primForkIO = primitive "IO.fork"++forkIO :: IO () -> IO ThreadId+forkIO io = ThreadId <$> primForkIO io
lib/Control/DeepSeq.hs view
@@ -10,3 +10,6 @@  force :: forall a . a -> a force x = rnf x `seq` x++rnfNoErr :: forall a . a -> ()+rnfNoErr = primRnfNoErr
lib/Control/Error.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Control.Error(module Control.Error) where+import Prelude()              -- do not import Prelude import Primitives import Data.Char_Type
lib/Control/Exception.hs view
@@ -1,13 +1,18 @@ module Control.Exception(   catch, try,   throwIO,-  Exn(..)+  Exn(..),+  exnToString,+  onException,   ) where import Primitives import Prelude  newtype Exn = Exn String +exnToString :: Exn -> String+exnToString (Exn s) = s+ catch :: forall a . IO a -> (Exn -> IO a) -> IO a catch ioa hdl = primCatch ioa (hdl . Exn) @@ -18,3 +23,7 @@ throwIO (Exn s) =   let e = error s   in  seq e (return e)++onException :: IO a -> IO b -> IO a+onException io what = io `catch` \e -> do _ <- what+                                          throwIO e
lib/Control/Monad.hs view
@@ -1,4 +1,40 @@-module Control.Monad(module Control.Monad) where+module Control.Monad(+  Functor(..),+  Monad(..),+  MonadPlus(..),+  mapM,+  mapM_,+  forM,+  forM_,+  sequence,+  sequence_,+  (=<<),+  (>=>),+  (<=<),+  forever,+  void,+  join,+  msum,+  mfilter,+  filterM,+  mapAndUnzipM,+  zipWithM,+  zipWithM_,+  foldM,+  foldM_,+  replicateM,+  replicateM_,+  guard,+  when,+  unless,+  liftM,+  liftM2,+  liftM3,+  ap,+  -- XXX move+  partitionM,+  ) where+import Prelude()              -- do not import Prelude import Primitives  -- for fixity import Control.Applicative import Control.Error@@ -6,11 +42,13 @@ import Data.Char_Type import Data.Function import Data.Functor-import Data.List_Type+import Data.List+import Data.Monoid+import Data.Ord --import Data.Maybe -infixl 1 >>-infixl 1 >>=+infixl 1 >>, >>=, =<<+infixr 1 <=<, >=>  class (Applicative m) => Monad m where   (>>=)  :: forall a b . m a -> (a -> m b) -> m b@@ -21,15 +59,7 @@   return :: forall a . a -> m a   return = pure -ap :: forall m a b . Monad m => m (a -> b) -> m a -> m b-ap f a = do-  f' <- f-  a' <- a-  return (f' a')--class Monad m => MonadFail m where-  fail :: forall a . String -> m a-  fail = error+-----  mapM :: forall m a b . Monad m => (a -> m b) -> [a] -> m [b] mapM f =@@ -54,10 +84,12 @@           rec as   in rec -when :: forall m . Monad m => Bool -> m () -> m ()-when False _ = return ()-when True ma = ma+forM :: forall m a b . Monad m => [a] -> (a -> m b) -> m [b]+forM = flip mapM +forM_ :: forall m a b . Monad m => [a] -> (a -> m b) -> m ()+forM_ = flip mapM_+ sequence :: forall m a . Monad m => [m a] -> m [a] sequence = mapM id @@ -67,23 +99,87 @@ (=<<) :: forall m a b . Monad m => (a -> m b) -> m a -> m b (=<<) = flip (>>=) -infixr 1 <=< (<=<) :: forall m a b c . Monad m => (b -> m c) -> (a -> m b) -> (a -> m c) f <=< g = \ a -> do   b <- g a   f b -infixr 1 >=> (>=>) :: forall m a b c . Monad m => (a -> m b) -> (b -> m c) -> (a -> m c) (>=>) = flip (<=<) -filterM :: forall m a . Monad m => (a -> m Bool) -> [a] -> m [a]-filterM _ [] = return []-filterM p (x:xs) = do-  b <- p x-  ts <- filterM p xs-  return $ if b then x : ts else ts+forever :: forall f a b . (Applicative f) => f a -> f b+forever a = let { a' = a *> a' } in a' +-----++join :: forall m a . (Monad m) => m (m a) -> m a+join x = x >>= id++filterM :: forall m a . Applicative m => (a -> m Bool) -> [a] -> m [a]+filterM _ [] = pure []+filterM p (x : xs) = liftA2 (\ flg -> if flg then (x:) else id) (p x) (filterM p xs)++-- XXX could relax some Monad to Applicative+mapAndUnzipM  :: forall m a b c . (Monad m) => (a -> m (b,c)) -> [a] -> m ([b], [c])+mapAndUnzipM f xs = unzip <$> mapM f xs++zipWithM :: forall m a b c . (Monad m) => (a -> b -> m c) -> [a] -> [b] -> m [c]+zipWithM f xs ys = sequence (zipWith f xs ys)++zipWithM_ :: forall m a b c . (Monad m) => (a -> b -> m c) -> [a] -> [b] -> m ()+zipWithM_ f xs ys = sequence_ (zipWith f xs ys)++foldM :: forall m a b . (Monad m) => (b -> a -> m b) -> b -> [a] -> m b+foldM = foldlM++foldM_ :: forall m a b . (Monad m) => (b -> a -> m b) -> b -> [a] -> m ()+foldM_ f a xs  = foldlM f a xs >> return ()++foldlM :: forall m a b . (Monad m) => (b -> a -> m b) -> b -> [a] -> m b+foldlM _ z [] = pure z+foldlM f z (x : xs) = do+  z' <- f z x+  foldlM f z' xs++replicateM  :: forall m a . (Applicative m) => Int -> m a -> m [a]+replicateM cnt0 f = loop cnt0+  where+    loop cnt =+      if cnt <= (0::Int) then pure []+      else liftA2 (:) f (loop (cnt `primIntSub` 1))++replicateM_  :: forall m a . (Applicative m) => Int -> m a -> m ()+replicateM_ cnt0 f = loop cnt0+  where+    loop cnt =+      if cnt <= (0::Int) then pure ()+      else f *> (loop (cnt `primIntSub` 1))++-----++when :: forall m . Applicative m => Bool -> m () -> m ()+when p ma = if p then ma else pure ()++unless :: forall m . Applicative m => Bool -> m () -> m ()+unless p ma = if p then pure () else ma++-----++liftM :: forall m r a1 . (Monad m) => (a1 -> r) -> m a1 -> m r+liftM f m1 = do { x1 <- m1; return (f x1) }+liftM2 :: forall m r a1 a2 . (Monad m) => (a1 -> a2 -> r) -> m a1 -> m a2 -> m r+liftM2 f m1 m2 = do { x1 <- m1; x2 <- m2; return (f x1 x2) }+liftM3 :: forall m r a1 a2 a3 . (Monad m) => (a1 -> a2 -> a3 -> r) -> m a1 -> m a2 -> m a3 -> m r+liftM3 f m1 m2 m3 = do { x1 <- m1; x2 <- m2; x3 <- m3; return (f x1 x2 x3) }++ap :: forall m a b . Monad m => m (a -> b) -> m a -> m b+ap f a = do+  f' <- f+  a' <- a+  return (f' a')++-----+ partitionM :: forall m a . Monad m => (a -> m Bool) -> [a] -> m ([a], [a]) partitionM _ [] = return ([], []) partitionM p (x:xs) = do@@ -101,6 +197,12 @@ instance forall a . Monad ((->) a) where   x >>= y = \ z -> y (x z) z +instance Monad Dual where+  m >>= k = k (getDual m)++instance Monad [] where+  (>>=) = flip concatMap+ {- -- Same for Maybe instance Functor Maybe where@@ -119,3 +221,16 @@ class (Monad m) => MonadPlus m where   mzero :: forall a . m a   mplus :: forall a . m a -> m a -> m a++instance MonadPlus [] where+  mzero = []+  mplus = (++)++msum :: forall m a . (MonadPlus m) => [m a] -> m a+msum [] = mzero+msum (ma:mas) = ma `mplus` msum mas++mfilter :: forall m a . (MonadPlus m) => (a -> Bool) -> m a -> m a+mfilter p ma = do+  a <- ma+  if p a then return a else mzero
+ lib/Control/Monad/Fail.hs view
@@ -0,0 +1,15 @@+module Control.Monad.Fail(MonadFail(..)) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Applicative+import Control.Error+import Control.Monad+import Data.Char+import Data.List_Type++class Monad m => MonadFail m where+  fail :: forall a . String -> m a+  fail = error++instance MonadFail [] where+  fail _ = []
lib/Control/Monad/ST_Type.hs view
@@ -2,6 +2,7 @@ module Control.Monad.ST_Type(   ST(..), unST,   ) where+import Prelude()              -- do not import Prelude import Primitives(IO)  -- The ST monad is implemented with the IO monad.
lib/Control/Monad/State/Strict.hs view
@@ -5,6 +5,7 @@   ) where import Prelude import Control.Monad+import Control.Monad.Fail  data State s a = S (s -> (a, s)) @@ -26,6 +27,8 @@       (a, ss) -> runState (k a) ss   (>>) = (*>)   return = pure++instance forall s . MonadFail (State s)  runState :: forall s a . State s a -> (s -> (a,s)) runState (S x) = x
lib/Data/Bits.hs view
@@ -1,4 +1,5 @@ module Data.Bits(module Data.Bits) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool
lib/Data/Bool.hs view
@@ -4,6 +4,7 @@   module Data.Bool,   module Data.Bool_Type   ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.Bounded
lib/Data/Bool_Type.hs view
@@ -1,4 +1,5 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Bool_Type(module Data.Bool_Type) where+import Prelude()              -- do not import Prelude data Bool = False | True
lib/Data/Bounded.hs view
@@ -1,4 +1,5 @@ module Data.Bounded(module Data.Bounded) where+import Prelude()              -- do not import Prelude import Primitives  class Bounded a where
lib/Data/Char.hs view
@@ -4,6 +4,7 @@   module Data.Char,   module Data.Char_Type   -- exports Char and String   ) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool@@ -38,10 +39,9 @@   x >  y  =  case primStringCompare x y of { GT -> True; _ -> False }   x >= y  =  case primStringCompare x y of { LT -> False; _ -> True } --- ASCII only for now instance Bounded Char where   minBound = chr 0-  maxBound = chr 127+  maxBound = chr 0x10ffff  chr :: Int -> Char chr = primChr@@ -61,6 +61,9 @@ isDigit :: Char -> Bool isDigit c = (primCharLE '0' c) && (primCharLE c '9') +isOctDigit :: Char -> Bool+isOctDigit c = (primCharLE '0' c) && (primCharLE c '7')+ isHexDigit :: Char -> Bool isHexDigit c = isDigit c || (primCharLE 'a' c && primCharLE c 'f') || (primCharLE 'F' c && primCharLE c 'F')  @@ -73,12 +76,19 @@ isSpace :: Char -> Bool isSpace c = c == ' ' || c == '\t' || c == '\n' +isAscii :: Char -> Bool+isAscii c = c <= '\127'+ digitToInt :: Char -> Int digitToInt c | (primCharLE '0' c) && (primCharLE c '9') = ord c - ord '0'              | (primCharLE 'a' c) && (primCharLE c 'f') = ord c - (ord 'a' - 10)              | (primCharLE 'A' c) && (primCharLE c 'F') = ord c - (ord 'A' - 10)              | otherwise                                = error "digitToInt" +intToDigit :: Int -> Char+intToDigit i | i < 10 = chr (ord '0' + i)+             | otherwise = chr (ord 'A' - 10 + i)+ toLower :: Char -> Char toLower c | primCharLE 'A' c && primCharLE c 'Z' = chr (ord c - ord 'A' + ord 'a')           | True = c@@ -89,19 +99,23 @@  instance Show Char where   showsPrec _ '\'' = showString "'\\''"-  showsPrec _ c = showChar '\'' . showString (encodeChar c) . showChar '\''+  showsPrec _ c = showChar '\'' . showString (encodeChar c "") . showChar '\''   showList    s = showChar '"'  . f s     where f [] = showChar '"'           f (c:cs) =             if c == '"' then showString "\\\"" . f cs-            else showString (encodeChar c) . f cs+            else showString (encodeChar c cs) . f cs  -- XXX should not export this-encodeChar :: Char -> String-encodeChar c =+encodeChar :: Char -> String -> String+encodeChar c rest =   let-    spec = [('\n', "\\n"), ('\r', "\\r"), ('\t', "\\t"), ('\b', "\\b"),-            ('\\', "\\\\")]-    look [] = if isPrint c then [c] else "'\\" ++ show (ord c) ++ "'"+    needProtect =+      case rest of+        [] -> False+        c : _ -> isDigit c+    spec = [('\a',"\\a"), ('\b', "\\b"), ('\f', "\\f"), ('\n', "\\n"),+            ('\r', "\\r"), ('\t', "\\t"), ('\v', "\\v"), ('\\', "\\\\")]+    look [] = if isPrint c then [c] else "\\" ++ show (ord c) ++ if needProtect then "\\&" else ""     look ((d,s):xs) = if d == c then s else look xs   in look spec
lib/Data/Char_Type.hs view
@@ -1,4 +1,5 @@ module Data.Char_Type(Char, String) where+import Prelude()              -- do not import Prelude import Primitives import Data.List_Type
lib/Data/Constraint.hs view
@@ -1,15 +1,17 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Constraint(module Data.Constraint) where+import Prelude()              -- do not import Prelude import Primitives  -- for (->) import Text.Show  -- A very, very minimal version of the constraints package -data Dict (c :: Constraint) = c => Dict+type Dict :: Constraint -> Type+data Dict c = c => Dict -instance forall (c :: Constraint) . Show (Dict c) where+instance forall c . Show (Dict c) where   showsPrec _ Dict = showString "Dict" -withDict :: forall (c :: Constraint) r . Dict c -> (c => r) -> r+withDict :: forall c r . Dict c -> (c => r) -> r withDict Dict r = r
lib/Data/Double.hs view
@@ -1,21 +1,27 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Double(Double) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bits import Data.Bool+import Data.Char import Data.Eq import Data.Floating import Data.Fractional import Data.Function import Data.Integer+import Data.List import Data.Ord import Data.Ratio import Data.Real import Data.RealFloat+import Data.RealFrac import Data.Num import Data.Word+import Text.Read+import Text.Read.Numeric import Text.Show  --@@ -40,7 +46,11 @@   -- This version of fromRational can go horribly wrong   -- if the integers are bigger than can be represented in a Double.   -- It'll do for now.-  fromRational x = fromInteger (numerator x) `primDoubleDiv` fromInteger (denominator x)+  fromRational x | x == rationalNaN = 0/0+                 | x == rationalInfinity = 1/0+                 | x == -rationalInfinity = (-1)/0+                 | otherwise =+    fromInteger (numerator x) / fromInteger (denominator x)  instance Eq Double where   (==) = primDoubleEQ@@ -56,10 +66,18 @@ instance Show Double where   show = primDoubleShow +instance Read Double where+  readsPrec _ = readSigned $ \ r -> [ (primDoubleRead s, t) | (s@(c:_), t) <- lex r, isDigit c ]+ instance Real Double where-  toRational x =-    let (m, e) = decodeFloat x-    in  toRational m * 2^^e+  toRational x | isNaN x = rationalNaN+               | isInfinite x = if x < 0 then -rationalInfinity else rationalInfinity+               | otherwise =+    case decodeFloat x of+      (m, e) -> toRational m * 2^^e++instance RealFrac Double where+  properFraction _ = error "Double.properFraction not implemented"  instance Floating Double where   pi     = 3.141592653589793
lib/Data/Dynamic.hs view
@@ -7,11 +7,12 @@   dynTypeRep,   ) where import Prelude+import Data.Maybe import Data.Proxy import Data.Typeable import Unsafe.Coerce -data Dynamic = D TypeRep Any+data Dynamic = D TypeRep AnyType  toDyn :: forall a . Typeable a => a -> Dynamic toDyn a = D (typeOf a) (unsafeCoerce a)
lib/Data/Either.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Either(module Data.Either) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool import Data.Eq
lib/Data/Enum.hs view
@@ -1,4 +1,5 @@ module Data.Enum(module Data.Enum) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool@@ -68,3 +69,13 @@ instance Enum Char where   fromEnum = primOrd   toEnum   = primChr+++instance Enum Ordering where+  fromEnum LT = (0::Int)+  fromEnum EQ = (1::Int)+  fromEnum GT = (2::Int)+  toEnum i =      if i `primIntEQ` 0 then LT+             else if i `primIntEQ` 1 then EQ+             else if i `primIntEQ` 2 then GT+             else error "Ord.toEnum: out of range"
lib/Data/Eq.hs view
@@ -1,6 +1,7 @@ module Data.Eq(   module Data.Eq   ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type
lib/Data/Floating.hs view
@@ -1,4 +1,5 @@ module Data.Floating(module Data.Floating) where+import Prelude()              -- do not import Prelude import Primitives import Data.Fractional import Data.Num
+ lib/Data/Foldable.hs view
@@ -0,0 +1,481 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Data.Foldable+-- Copyright   :  Ross Paterson 2005+-- License     :  BSD-style (see the LICENSE file in the distribution)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  stable+-- Portability :  portable+--+-- Class of data structures that can be folded to a summary value.+--+-----------------------------------------------------------------------------++module Data.Foldable (+    Foldable(..),+    -- * Special biased folds+    foldrM,+    foldlM,+    -- * Folding actions+    -- ** Applicative actions+    traverse_,+    for_,+    sequenceA_,+    asum,+    -- ** Monadic actions+    mapM_,+    forM_,+    sequence_,+    msum,+    -- * Specialized folds+    concat,+    concatMap,+    and,+    or,+    any,+    all,+    maximumBy,+    minimumBy,+    -- * Searches+    notElem,+    find+    ) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Applicative(Applicative(..), Alternative(..))+import Control.Error+import Control.Monad(Monad(..), MonadPlus(..))+import Data.Bool+import Data.Either+import Data.Eq+import Data.Function+import Data.Functor.Const+import Data.Functor.Identity+import Data.List_Type hiding (concatMap)+import qualified Data.List as List+import Data.Maybe+import Data.Monoid+import Data.Num+import Data.Ord+import Data.Proxy+import Data.Semigroup++newtype MMax a = MMax (Maybe a)+getMMax :: forall a . MMax a -> Maybe a+getMMax (MMax ma) = ma++newtype MMin a = MMin (Maybe a)+getMMin :: forall a . MMin a -> Maybe a+getMMin (MMin ma) = ma++instance forall a . Ord a => Semigroup (MMax a) where+    m <> MMax Nothing = m+    MMax Nothing <> n = n+    (MMax m@(Just x)) <> (MMax n@(Just y))+      | x >= y    = MMax m+      | otherwise = MMax n++instance forall a . Ord a => Monoid (MMax a) where+    mempty = MMax Nothing+    mconcat = List.foldl' (<>) mempty++instance forall a . Ord a => Semigroup (MMin a) where+    m <> MMin Nothing = m+    MMin Nothing <> n = n+    (MMin m@(Just x)) <> (MMin n@(Just y))+      | x <= y    = MMin m+      | otherwise = MMin n++instance forall a . Ord a => Monoid (MMin a) where+    mempty = MMin Nothing+    mconcat = List.foldl' (<>) mempty++-------------------------------++infix  4 `elem`, `notElem`++class Foldable (t :: Type -> Type) where+    {-# MINIMAL foldMap | foldr #-}++    fold :: forall m . Monoid m => t m -> m+    fold = foldMap id++    foldMap :: forall m a . Monoid m => (a -> m) -> t a -> m+    foldMap f = foldr (mappend . f) mempty++    foldMap' :: forall m a . Monoid m => (a -> m) -> t a -> m+    foldMap' f = foldl' (\ acc a -> acc <> f a) mempty++    foldr :: forall a b . (a -> b -> b) -> b -> t a -> b+    foldr f z t = appEndo (foldMap (Endo . f) t) z++    foldr' :: forall a b . (a -> b -> b) -> b -> t a -> b+    foldr' f z0 = \ xs ->+        foldl (\ k x -> {-oneShot-} (\ z -> z `seq` k (f x z)))+              id xs z0++    foldl :: forall a b . (b -> a -> b) -> b -> t a -> b+    foldl f z t = appEndo (getDual (foldMap (Dual . Endo . flip f) t)) z++    foldl' :: forall a b . (b -> a -> b) -> b -> t a -> b+    foldl' f z0 = \ xs ->+        foldr (\ x k -> {-oneShot-} (\ z -> z `seq` k (f z x)))+              id xs z0++    foldr1 :: forall a . (a -> a -> a) -> t a -> a+    foldr1 f xs = fromMaybe (error "foldr1: empty structure")+                    (foldr mf Nothing xs)+      where+        mf x m = Just (case m of+                         Nothing -> x+                         Just y  -> f x y+                      )++    foldl1 :: forall a . (a -> a -> a) -> t a -> a+    foldl1 f xs = fromMaybe (error "foldl1: empty structure")+                    (foldl mf Nothing xs)+      where+        mf m y = Just (case m of+                         Nothing -> y+                         Just x  -> f x y+                      )++    toList :: forall a . t a -> [a]+    toList t = foldr (:) [] t++    null :: forall a . t a -> Bool+    null = foldr (\_ _ -> False) True++    length :: forall a . t a -> Int+    length = foldl' (\c _ -> c+1) 0++    elem :: forall a . Eq a => a -> t a -> Bool+    elem = any . (==)++    maximum :: forall a . Ord a => t a -> a+    maximum = fromMaybe (error "maximum: empty structure") .+       getMMax . foldMap' (MMax . Just)++    minimum :: forall a . Ord a => t a -> a+    minimum = fromMaybe (error "minimum: empty structure") .+       getMMin . foldMap' (MMin . Just)++    sum :: forall a . Num a => t a -> a+    sum = getSum . foldMap' Sum++    product :: forall a . Num a => t a -> a+    product = getProduct . foldMap' Product++instance Foldable Maybe where+    foldMap = maybe mempty++    foldr _ z Nothing = z+    foldr f z (Just x) = f x z++    foldl _ z Nothing = z+    foldl f z (Just x) = f z x++instance Foldable [] where+    elem    = List.elem+    foldl   = List.foldl+    foldl'  = List.foldl'+    foldl1  = List.foldl1+    foldr   = List.foldr+    foldr'  = List.foldr'+    foldr1  = List.foldr1+    foldMap = (mconcat .) . List.map+    fold    = mconcat+    length  = List.length+    maximum = List.maximum+    minimum = List.minimum+    null    = List.null+    product = List.product+    sum     = List.sum+    toList  = id+  +instance forall a . Foldable (Either a) where+    foldMap _ (Left _) = mempty+    foldMap f (Right y) = f y++    foldr _ z (Left _) = z+    foldr f z (Right y) = f y z++    length (Left _)  = 0+    length (Right _) = 1++    null             = isLeft++instance Foldable Proxy where+  foldMap _ _ = mempty++instance Foldable Identity where+  foldMap f (Identity a) = f a++instance forall m . Foldable (Const m) where+  foldMap _ _ = mempty++{-+-- | @since 4.15+deriving instance Foldable Solo++-- | @since 4.7.0.0+instance Foldable ((,) a) where+    foldMap f (_, y) = f y++    foldr f z (_, y) = f y z+    length _  = 1+    null _ = False++-- | @since 4.8.0.0+instance Foldable (Array i) where+    foldr = foldrElems+    foldl = foldlElems+    foldl' = foldlElems'+    foldr' = foldrElems'+    foldl1 = foldl1Elems+    foldr1 = foldr1Elems+    toList = elems+    length = numElements+    null a = numElements a == 0++-- | @since 4.7.0.0+instance Foldable Proxy where+    foldMap _ _ = mempty+    {-# INLINE foldMap #-}+    fold _ = mempty+    {-# INLINE fold #-}+    foldr _ z _ = z+    {-# INLINE foldr #-}+    foldl _ z _ = z+    {-# INLINE foldl #-}+    foldl1 _ _ = error "foldl1: Proxy"+    foldr1 _ _ = error "foldr1: Proxy"+    length _   = 0+    null _     = True+    elem _ _   = False+    sum _      = 0+    product _  = 1++-- | @since 4.8.0.0+instance Foldable Dual where+    foldMap            = coerce++    elem               = (. getDual) . (==)+    foldl              = coerce+    foldl'             = coerce+    foldl1 _           = getDual+    foldr f z (Dual x) = f x z+    foldr'             = foldr+    foldr1 _           = getDual+    length _           = 1+    maximum            = getDual+    minimum            = getDual+    null _             = False+    product            = getDual+    sum                = getDual+    toList (Dual x)    = [x]++-- | @since 4.8.0.0+instance Foldable Sum where+    foldMap            = coerce++    elem               = (. getSum) . (==)+    foldl              = coerce+    foldl'             = coerce+    foldl1 _           = getSum+    foldr f z (Sum x)  = f x z+    foldr'             = foldr+    foldr1 _           = getSum+    length _           = 1+    maximum            = getSum+    minimum            = getSum+    null _             = False+    product            = getSum+    sum                = getSum+    toList (Sum x)     = [x]++-- | @since 4.8.0.0+instance Foldable Product where+    foldMap               = coerce++    elem                  = (. getProduct) . (==)+    foldl                 = coerce+    foldl'                = coerce+    foldl1 _              = getProduct+    foldr f z (Product x) = f x z+    foldr'                = foldr+    foldr1 _              = getProduct+    length _              = 1+    maximum               = getProduct+    minimum               = getProduct+    null _                = False+    product               = getProduct+    sum                   = getProduct+    toList (Product x)    = [x]++-- | @since 4.8.0.0+instance Foldable First where+    foldMap f = foldMap f . getFirst++-- | @since 4.8.0.0+instance Foldable Last where+    foldMap f = foldMap f . getLast++-- | @since 4.12.0.0+instance (Foldable f) => Foldable (Alt f) where+    foldMap f = foldMap f . getAlt++-- | @since 4.12.0.0+instance (Foldable f) => Foldable (Ap f) where+    foldMap f = foldMap f . getAp++-- Instances for GHC.Generics+-- | @since 4.9.0.0+instance Foldable U1 where+    foldMap _ _ = mempty+    {-# INLINE foldMap #-}+    fold _ = mempty+    {-# INLINE fold #-}+    foldr _ z _ = z+    {-# INLINE foldr #-}+    foldl _ z _ = z+    {-# INLINE foldl #-}+    foldl1 _ _ = error "foldl1: U1"+    foldr1 _ _ = error "foldr1: U1"+    length _   = 0+    null _     = True+    elem _ _   = False+    sum _      = 0+    product _  = 1++-- | @since 4.9.0.0+deriving instance Foldable V1++-- | @since 4.9.0.0+deriving instance Foldable Par1++-- | @since 4.9.0.0+deriving instance Foldable f => Foldable (Rec1 f)++-- | @since 4.9.0.0+deriving instance Foldable (K1 i c)++-- | @since 4.9.0.0+deriving instance Foldable f => Foldable (M1 i c f)++-- | @since 4.9.0.0+deriving instance (Foldable f, Foldable g) => Foldable (f :+: g)++-- | @since 4.9.0.0+deriving instance (Foldable f, Foldable g) => Foldable (f :*: g)++-- | @since 4.9.0.0+deriving instance (Foldable f, Foldable g) => Foldable (f :.: g)++-- | @since 4.9.0.0+deriving instance Foldable UAddr++-- | @since 4.9.0.0+deriving instance Foldable UChar++-- | @since 4.9.0.0+deriving instance Foldable UDouble++-- | @since 4.9.0.0+deriving instance Foldable UFloat++-- | @since 4.9.0.0+deriving instance Foldable UInt++-- | @since 4.9.0.0+deriving instance Foldable UWord++-- Instances for Data.Ord+-- | @since 4.12.0.0+deriving instance Foldable Down+-}++foldrM :: forall (t :: Type -> Type) (m :: Type -> Type) a b . (Foldable t, Monad m) => (a -> b -> m b) -> b -> t a -> m b+foldrM f z0 xs = foldl c return xs z0+  where c k x z = f x z >>= k++foldlM :: forall (t :: Type -> Type) (m :: Type -> Type) a b . (Foldable t, Monad m) => (b -> a -> m b) -> b -> t a -> m b+foldlM f z0 xs = foldr c return xs z0+  where c x k z = f z x >>= k++traverse_ :: forall (t :: Type -> Type) (f :: Type -> Type) a b . (Foldable t, Applicative f) => (a -> f b) -> t a -> f ()+traverse_ f = foldr c (pure ())+  where c x k = f x *> k+        {-# INLINE c #-}++for_ :: forall (t :: Type -> Type) (f :: Type -> Type) a b . (Foldable t, Applicative f) => t a -> (a -> f b) -> f ()+for_ = flip traverse_++mapM_ :: forall (t :: Type -> Type) (m :: Type -> Type) a b . (Foldable t, Monad m) => (a -> m b) -> t a -> m ()+mapM_ f = foldr c (return ())+  where c x k = f x >> k+        {-# INLINE c #-}++forM_ :: forall (t :: Type -> Type) (m :: Type -> Type) a b . (Foldable t, Monad m) => t a -> (a -> m b) -> m ()+forM_ = flip mapM_++sequenceA_ :: forall (t :: Type -> Type) (f :: Type -> Type) a . (Foldable t, Applicative f) => t (f a) -> f ()+sequenceA_ = foldr c (pure ())+  where c m k = m *> k+        {-# INLINE c #-}++sequence_ :: forall (t :: Type -> Type) (m :: Type -> Type) a . (Foldable t, Monad m) => t (m a) -> m ()+sequence_ = foldr c (return ())+  where c m k = m >> k+        {-# INLINE c #-}++asum :: forall (t :: Type -> Type) (f :: Type -> Type) a . (Foldable t, Alternative f) => t (f a) -> f a+asum = foldr (<|>) empty++msum :: forall (t :: Type -> Type) (m :: Type -> Type) a . (Foldable t, Alternative m, MonadPlus m) => t (m a) -> m a+msum = asum++concat :: forall (t :: Type -> Type) a . Foldable t => t [a] -> [a]+concat xs = foldr (\x y -> foldr (:) y x) [] xs++concatMap :: forall (t :: Type -> Type) a b . Foldable t => (a -> [b]) -> t a -> [b]+concatMap f xs = foldr (\x b -> foldr (:) b (f x)) [] xs++and :: forall (t :: Type -> Type) . Foldable t => t Bool -> Bool+and = getAll . foldMap All++or :: forall (t :: Type -> Type) . Foldable t => t Bool -> Bool+or = getAny . foldMap Any++any :: forall (t :: Type -> Type) a . Foldable t => (a -> Bool) -> t a -> Bool+any p = getAny . foldMap (Any . p)++all :: forall (t :: Type -> Type) a . Foldable t => (a -> Bool) -> t a -> Bool+all p = getAll . foldMap (All . p)++maximumBy :: forall (t :: Type -> Type) a . Foldable t => (a -> a -> Ordering) -> t a -> a+maximumBy cmp = fromMaybe (error "maximumBy: empty structure")+  . foldl' max' Nothing+  where+    max' mx y = Just $! case mx of+      Nothing -> y+      Just x -> case cmp x y of+        GT -> x+        _ -> y++minimumBy :: forall (t :: Type -> Type)  a . Foldable t => (a -> a -> Ordering) -> t a -> a+minimumBy cmp = fromMaybe (error "minimumBy: empty structure")+  . foldl' min' Nothing+  where+    min' mx y = Just $! case mx of+      Nothing -> y+      Just x -> case cmp x y of+        GT -> y+        _ -> x++notElem :: forall (t :: Type -> Type)  a . (Foldable t, Eq a) => a -> t a -> Bool+notElem x = not . elem x++find :: forall (t :: Type -> Type) a . Foldable t => (a -> Bool) -> t a -> Maybe a+find p = getFirst . foldMap (\ x -> First (if p x then Just x else Nothing))
lib/Data/Fractional.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Fractional(module Data.Fractional) where+import Prelude()              -- do not import Prelude import Primitives import Data.Integral import Data.Num
lib/Data/Function.hs view
@@ -1,7 +1,9 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Function(module Data.Function) where+import Prelude()              -- do not import Prelude import Primitives+import Data.Bool_Type --import Data.Tuple  infixr 0 $@@ -28,7 +30,10 @@ fix :: forall a . (a -> a) -> a fix = primFix -uncurry :: forall a b c . (a -> b -> c) -> (a, b) -> c+curry :: forall a b c . ((a, b) -> c) -> (a -> b -> c)+curry f a b = f (a, b)++uncurry :: forall a b c . (a -> b -> c) -> ((a, b) -> c) uncurry f (a, b) = f a b  -- XXX not lazy  infixl 0 `on`@@ -40,3 +45,8 @@  seq :: forall a b . a -> b -> b seq = primSeq++until :: forall a . (a -> Bool) -> (a -> a) -> a -> a+until p f = rec+  where+    rec x = if p x then x else rec (f x)
lib/Data/Functor.hs view
@@ -1,4 +1,5 @@ module Data.Functor(module Data.Functor) where+import Prelude()              -- do not import Prelude import Primitives  -- for fixity import Data.Function @@ -11,5 +12,5 @@ (<$>) :: forall f a b . Functor f => (a -> b) -> f a -> f b (<$>) = fmap ---void :: forall f a . Functor f => f a -> f ()---void = fmap (const ())+void :: forall f a . Functor f => f a -> f ()+void = fmap (const ())
+ lib/Data/Functor/Const.hs view
@@ -0,0 +1,29 @@+-- Copyright 2023 Lennart Augustsson+-- See LICENSE file for full license.+module Data.Functor.Const(Const(..), getConst) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Applicative+import Control.Monad+import Data.Bool+import Data.Eq+import Data.Function+import Data.Functor+import Data.Int+import Data.Monoid+import Data.Ord+import Text.Show++type Const :: forall k . Type -> k -> Type+newtype Const a b = Const a+  deriving (Eq, Ord, Show)++getConst :: forall a b . Const a b -> a+getConst (Const a) = a++instance forall a . Functor (Const a) where+  fmap _ (Const a) = Const a++instance forall m . Monoid m => Applicative (Const m) where+  pure _ = Const mempty+  Const a <*> Const b = Const (a `mappend` b)
lib/Data/Functor/Identity.hs view
@@ -1,9 +1,12 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license.-module Data.Functor.Identity(Identity(..)) where+module Data.Functor.Identity(Identity(..), runIdentity) where+import Prelude()              -- do not import Prelude import Primitives import Control.Applicative import Control.Monad+import Data.Bool+import Data.Eq import Data.Function import Data.Functor import Data.Int@@ -11,7 +14,11 @@ import Text.Show  newtype Identity a = Identity a+  deriving (Eq, Ord, Show) +runIdentity :: forall a . Identity a -> a+runIdentity (Identity a) = a+ instance Functor Identity where   fmap f (Identity a) = Identity (f a) @@ -21,6 +28,3 @@  instance Monad Identity where   Identity a >>= f = f a--instance forall a . (Show a) => Show (Identity a) where-  showsPrec p (Identity a) = showParen (p >= 11) (showString "Identity " . showsPrec 11 a)
− lib/Data/Generics.hs 
@@ -1,32 +0,0 @@-module Data.Generics(-  ) where--type V1 :: forall (k::Kind) . k -> Type-data V1 p--type U1 :: forall (k::Kind) . k -> Type-data U1 p = U1--newtype Par1 p = Par1 p--type Rec1 :: forall (k::Kind) . (k -> Type) -> k -> Type-newtype Rec1 f p = Rec1 (f p)--type K1 :: forall (k::Kind) . Type -> Type -> k -> Type-newtype K1 i c p = K1 c--newtype M1 :: forall k . Type -> Type{-Meta-} -> (k -> Type) -> k -> Type-newtype M1 i c f p = M1 (f p)--infixr 5 :+:-type (:+:) :: forall k . (k -> Type) -> (k -> Type) -> k -> Type-data (:+:) f g p = L1 (f p) | R1 (g p)--infixr 6 :*:-type (:*:) :: forall k . (k -> Type) -> (k -> Type) -> k -> Type-data (:*:) f g p = f p :*: g p--infixr 7 :.:-type (:.:) :: forall k1 k2 . (k2 -> Type) -> (k1 -> k2) -> k1 -> Type-newtype (:.:) f g p = Comp1 (f (g p))-
lib/Data/IOArray.hs view
@@ -1,4 +1,5 @@ module Data.IOArray(module Data.IOArray, IOArray) where+import Prelude()              -- do not import Prelude import Primitives  -- data IOArray
lib/Data/IORef.hs view
@@ -1,4 +1,11 @@-module Data.IORef(module Data.IORef) where+module Data.IORef(+  IORef,+  newIORef,+  readIORef,+  writeIORef,+  modifyIORef,+  ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Eq
lib/Data/Int.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license.-module Data.Int(module Data.Int, Int) where+module Data.Int(Int) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.Bounded@@ -76,3 +77,7 @@         [c]       else         _showUnsignedNegInt (quot n 10) ++ [c]++--------------------------------++-- In Text.Read: instance Read Int
lib/Data/Integer.hs view
@@ -2,7 +2,6 @@ -- See LICENSE file for full license. module Data.Integer(   Integer,-  readInteger,   _intToInteger,   _integerToInt,   _wordToInteger,@@ -12,6 +11,7 @@   _integerToIntList,   _intListToInteger,   ) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool@@ -27,6 +27,8 @@ import Data.Ord import Data.Ratio_Type import Data.Real+import Numeric+import Text.Read import Text.Show  --@@ -60,8 +62,11 @@   (>=) = geI  instance Show Integer where-  show i = showInteger i+  showsPrec = showIntegral +instance Read Integer where+  readsPrec = readIntegral+ instance Num Integer where   (+) = addI   (-) = subI@@ -289,24 +294,6 @@ negOneI = I Minus [1]  ----------------showInteger :: Integer -> String-showInteger (I _     []) = "0"-showInteger (I Minus xs) = '-' : showInteger' xs-showInteger (I Plus  xs) =       showInteger' xs--showInteger' :: [Digit] -> String-showInteger' [] = ""-showInteger' xs = showInteger' (trim0 xs') ++ [chr (ord '0' + d)]-  where-    (xs', [d]) = quotRemD xs 10--readInteger :: String -> Integer-readInteger ('-':ds) = negate (readUnsignedInteger ds)-readInteger ds       =         readUnsignedInteger ds--readUnsignedInteger :: String -> Integer-readUnsignedInteger = foldl (\ r c -> r * tenI + _intToInteger (ord c - ord '0')) zeroI  eqI :: Integer -> Integer -> Bool eqI (I sx xs) (I sy ys) = sx == sy && xs == ys
lib/Data/Integer_Type.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Integer_Type(module Data.Integer_Type) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.List_Type@@ -15,8 +16,10 @@ maxD =   if _wordSize `primIntEQ` 64 then     (2147483648::Int)  -- 2^31, this is used so multiplication of two digits doesn't overflow a 64 bit Int-  else+  else if _wordSize `primIntEQ` 32 then     (32768::Int)       -- 2^15, this is used so multiplication of two digits doesn't overflow a 32 bit Int+  else+    primError "Integer: unsupported word size"  -- Sadly, we also need a bunch of functions.
lib/Data/Integral.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Integral(module Data.Integral) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool
lib/Data/List.hs view
@@ -4,11 +4,10 @@   module Data.List,   module Data.List_Type   ) where+import Prelude()              -- do not import Prelude import Primitives-import Control.Alternative import Control.Applicative import Control.Error-import Control.Monad import Data.Bool import Data.Eq import Data.Function@@ -21,6 +20,7 @@ import Data.Ord import Data.Semigroup import Data.Tuple+--import Text.Read import Text.Show  instance {-# OVERLAPPABLE #-} forall a . Eq a => Eq [a] where@@ -38,13 +38,7 @@  instance Applicative [] where   pure a = [a]-  (<*>) = ap--instance Monad [] where-  (>>=) = flip concatMap--instance MonadFail [] where-  fail _ = []+  fs <*> xs = concatMap (\ f -> map (\ x -> f x) xs) fs  instance forall a . Show a => Show [a] where   showsPrec _ = showList@@ -67,9 +61,6 @@ concat :: forall a . [[a]] -> [a] concat = foldr (++) [] -concatMap :: forall a b . (a -> [b]) -> [a] -> [b]-concatMap f = concat . map f- map :: forall a b . (a -> b) -> [a] -> [b] map f =   let@@ -269,6 +260,9 @@     rec r [] = (reverse r, [])     rec r (x:xs) = if p x then rec (x:r) xs else (reverse r, x:xs)   in rec []++break :: forall a . (a -> Bool) -> [a] -> ([a],[a])+break p = span (not . p)  spanUntil :: forall a . (a -> Bool) -> [a] -> ([a], [a]) spanUntil p =
lib/Data/List_Type.hs view
@@ -1,4 +1,5 @@ module Data.List_Type(module Data.List_Type) where+import Prelude()              -- do not import Prelude import Primitives  infixr 5 :@@ -12,3 +13,11 @@   let rec [] = ys       rec (x:xs) = x : rec xs   in  rec axs++-- Put concatMap here so list comprehensions can be desugared+-- using only List_Type+concatMap :: forall a b . (a -> [b]) -> [a] -> [b]+concatMap f = rec+  where+    rec [] = []+    rec (x:xs) = f x ++ rec xs
lib/Data/Map.hs view
@@ -7,6 +7,7 @@   Map,   insertBy, insertByWith, fromListByWith, fromListBy, lookupBy, empty, elems, size, toList, deleteBy,   ) where+import Prelude()              -- do not import Prelude import Prelude hiding (lookupBy, deleteBy)  data Map k a
lib/Data/Maybe.hs view
@@ -1,10 +1,11 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Maybe(module Data.Maybe, module Data.Maybe_Type) where+import Prelude()              -- do not import Prelude import Primitives-import Control.Alternative import Control.Applicative import Control.Monad+import Control.Monad.Fail import Data.Bool import Data.Char import Data.Eq@@ -89,3 +90,6 @@ maybeToList Nothing = [] maybeToList (Just a) = [a] +listToMaybe :: forall a . [a] -> Maybe a+listToMaybe [] = Nothing+listToMaybe (a:_) = Just a
lib/Data/Maybe_Type.hs view
@@ -1,5 +1,6 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Maybe_Type(module Data.Maybe_Type) where+import Prelude()              -- do not import Prelude  data Maybe a = Nothing | Just a
lib/Data/Monoid.hs view
@@ -1,7 +1,7 @@ module Data.Monoid(module Data.Monoid, module Data.Semigroup) where+import Prelude()              -- do not import Prelude import Primitives import Control.Applicative-import Control.Monad import Data.Bool import Data.Bounded import Data.Function@@ -50,9 +50,6 @@ instance Applicative Dual where   pure = Dual   Dual f <*> Dual b = Dual (f b)--instance Monad Dual where-  m >>= k = k (getDual m)  ---------------------
lib/Data/Num.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Data.Num(module Data.Num) where+import Prelude()              -- do not import Prelude import Primitives import Data.Integer_Type
lib/Data/Ord.hs view
@@ -2,6 +2,7 @@   module Data.Ord,   module Data.Ordering_Type,   ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.Bounded@@ -46,4 +47,3 @@ instance Bounded Ordering where   minBound = LT   maxBound = GT-
lib/Data/Ordering_Type.hs view
@@ -1,2 +1,3 @@ module Data.Ordering_Type(Ordering(..)) where+import Prelude()              -- do not import Prelude data Ordering = LT | EQ | GT
lib/Data/Proxy.hs view
@@ -1,7 +1,9 @@ module Data.Proxy(module Data.Proxy) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.Eq+import Data.Functor import Text.Show  type Proxy :: forall (k::Kind) . k -> Type@@ -12,3 +14,6 @@  instance forall a . Eq (Proxy a) where   _ == _  =  True++instance Functor Proxy where+  fmap _ Proxy = Proxy
lib/Data/Ratio.hs view
@@ -6,6 +6,7 @@   rationalNaN,   Rational,   ) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error import Data.Bool@@ -39,7 +40,7 @@   (x:%y) + (x':%y')   =  reduce (x*y' + x'*y) (y*y')   (x:%y) - (x':%y')   =  reduce (x*y' - x'*y) (y*y')   (x:%y) * (x':%y')   =  reduce (x * x') (y * y')-  negate (x:%y)       =  (negate x) :% y+  negate (x:%y)       =  negate x :% y   abs (x:%y)          =  abs x :% y   signum (x:%_)       =  signum x :% 1   fromInteger x       =  fromInteger x :% 1
lib/Data/Ratio_Type.hs view
@@ -1,4 +1,5 @@ module Data.Ratio_Type(module Data.Ratio_Type) where+import Prelude()              -- do not import Prelude import Primitives import Data.Integer_Type
lib/Data/Real.hs view
@@ -1,6 +1,12 @@ module Data.Real(module Data.Real) where+import Prelude()              -- do not import Prelude import Primitives+import Data.Fractional+import Data.Num import Data.Ratio_Type -class Real a where+class Num a => Real a where   toRational :: a -> Rational++realToFrac :: forall a b . (Real a, Fractional b) => a -> b+realToFrac a = fromRational (toRational a)
lib/Data/RealFloat.hs view
@@ -1,6 +1,7 @@ module Data.RealFloat(   RealFloat(..),   ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool import Data.Eq
+ lib/Data/RealFrac.hs view
@@ -0,0 +1,30 @@+module Data.RealFrac(module Data.RealFrac) where+import Prelude()+import Primitives+import Data.Ord+import Data.Fractional+import Data.Integral+import Data.Num+import Data.Real++class  (Ord a, Real a, Fractional a) => RealFrac a  where+  properFraction :: (Integral b) => a -> (b,a)+  truncate       :: (Integral b) => a -> b+  round          :: (Integral b) => a -> b+  ceiling        :: (Integral b) => a -> b+  floor          :: (Integral b) => a -> b++  truncate x     =  m  where (m,_) = properFraction x+  +  round x        =  let (n,r) = properFraction x+                        m     = if r < 0 then n - 1 else n + 1+                        s     = signum (abs r - 0.5)+                    in if s < 0 then n+                       else if s > 0 then m+                       else if even n then n else m++  ceiling x      =  if r > 0 then n + 1 else n+                      where (n,r) = properFraction x++  floor x        =  if r < 0 then n - 1 else n+                      where (n,r) = properFraction x
lib/Data/Records.hs view
@@ -1,27 +1,30 @@-module Data.Records(module Data.Records) where+module Data.Records(+  module Data.Proxy,+  HasField(..),+  SetField(..),+  hasField,+  composeSet,+  ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Function import Data.Proxy import Data.Tuple +type Get r a = r -> a+type Set r a = r -> a -> r type GetSet r a = r -> (a, a -> r)  type  HasField :: forall (k::Kind) . k -> Type -> Type -> Constraint class HasField x r a | x r -> a where-  hasField :: Proxy x -> GetSet r a--getField :: forall x r a . HasField x r a => Proxy x -> r -> a-getField p r = case hasField p r of { (g,_) -> g }+  getField :: Proxy x -> r -> a -- Get r a -setField :: forall x r a . HasField x r a => Proxy x -> r -> (a -> r)-setField p r = case hasField p r of { (_,s) -> s }+type  SetField :: forall (k::Kind) . k -> Type -> Type -> Constraint+class SetField x r a | x r -> a where+  setField :: Proxy x -> r -> a -> r -- Set r a -composeGetSet :: forall a b c . GetSet a b -> GetSet b c -> GetSet a c-composeGetSet gs1 gs2 a =-  case gs1 a of-    (b, b_to_a) ->-      case gs2 b of-        (c, c_to_b) -> (c, b_to_a . c_to_b)+hasField :: forall x r a . (HasField x r a, SetField x r a) => Proxy x -> r -> (a, a -> r)                    -- GetSet r a+hasField p r = (getField p r, setField p r)  composeSet :: forall a b c . GetSet a b -> (b -> c -> b) -> (a -> c -> a) composeSet gs1 b_to_c_to_b a c =@@ -31,23 +34,23 @@ ----------------------------------- -- Virtual fields for tuples. -instance forall a b . HasField "_1" (a, b) a where-  hasField _ (a, b) = (a, \ a -> (a, b))-instance forall a b . HasField "_2" (a, b) b where-  hasField _ (a, b) = (b, \ b -> (a, b))+instance forall a b . HasField "_1" (a, b) a where getField _ (a, b) = a+instance forall a b . SetField "_1" (a, b) a where setField _ (a, b) = \ a -> (a, b)+instance forall a b . HasField "_2" (a, b) b where getField _ (a, b) = b+instance forall a b . SetField "_2" (a, b) b where setField _ (a, b) = \ b -> (a, b) -instance forall a b c . HasField "_1" (a, b, c) a where-  hasField _ (a, b, c) = (a, \ a -> (a, b, c))-instance forall a b c . HasField "_2" (a, b, c) b where-  hasField _ (a, b, c) = (b, \ b -> (a, b, c))-instance forall a b c . HasField "_3" (a, b, c) c where-  hasField _ (a, b, c) = (c, \ c -> (a, b, c))+instance forall a b c . HasField "_1" (a, b, c) a where getField _ (a, b, c) = a+instance forall a b c . SetField "_1" (a, b, c) a where setField _ (a, b, c) = \ a -> (a, b, c)+instance forall a b c . HasField "_2" (a, b, c) b where getField _ (a, b, c) = b+instance forall a b c . SetField "_2" (a, b, c) b where setField _ (a, b, c) = \ b -> (a, b, c)+instance forall a b c . HasField "_3" (a, b, c) c where getField _ (a, b, c) = c+instance forall a b c . SetField "_3" (a, b, c) c where setField _ (a, b, c) = \ c -> (a, b, c) -instance forall a b c d . HasField "_1" (a, b, c, d) a where-  hasField _ (a, b, c, d) = (a, \ a -> (a, b, c, d))-instance forall a b c d . HasField "_2" (a, b, c, d) b where-  hasField _ (a, b, c, d) = (b, \ b -> (a, b, c, d))-instance forall a b c d . HasField "_3" (a, b, c, d) c where-  hasField _ (a, b, c, d) = (c, \ c -> (a, b, c, d))-instance forall a b c d . HasField "_4" (a, b, c, d) d where-  hasField _ (a, b, c, d) = (d, \ d -> (a, b, c, d))+instance forall a b c d . HasField "_1" (a, b, c, d) a where getField _ (a, b, c, d) = a+instance forall a b c d . SetField "_1" (a, b, c, d) a where setField _ (a, b, c, d) = \ a -> (a, b, c, d)+instance forall a b c d . HasField "_2" (a, b, c, d) b where getField _ (a, b, c, d) = b+instance forall a b c d . SetField "_2" (a, b, c, d) b where setField _ (a, b, c, d) = \ b -> (a, b, c, d)+instance forall a b c d . HasField "_3" (a, b, c, d) c where getField _ (a, b, c, d) = c+instance forall a b c d . SetField "_3" (a, b, c, d) c where setField _ (a, b, c, d) = \ c -> (a, b, c, d)+instance forall a b c d . HasField "_4" (a, b, c, d) d where getField _ (a, b, c, d) = d+instance forall a b c d . SetField "_4" (a, b, c, d) d where setField _ (a, b, c, d) = \ d -> (a, b, c, d)
lib/Data/Semigroup.hs view
@@ -1,4 +1,5 @@ module Data.Semigroup(module Data.Semigroup) where+import Prelude()              -- do not import Prelude import Primitives  infixr 6 <>
+ lib/Data/Traversable.hs view
@@ -0,0 +1,243 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Data.Traversable+-- Copyright   :  Conor McBride and Ross Paterson 2005+-- License     :  BSD-style (see the LICENSE file in the distribution)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  stable+-- Portability :  portable+--+-- Class of data structures that can be traversed from left to right,+-- performing an action on each element.  Instances are expected to satisfy+-- the listed [laws](#laws).+-----------------------------------------------------------------------------++module Data.Traversable (+    -- * The 'Traversable' class+    Traversable(..),+    -- * Utility functions+    for,+    forM,+{-+    forAccumM,+    mapAccumL,+    mapAccumR,+    mapAccumM,+    -- * General definitions for superclass methods+    fmapDefault,+    foldMapDefault,+-}+    ) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Applicative+import Control.Monad(Monad(..), MonadPlus(..))+--import Data.Coerce+import Data.Either+import Data.Foldable+import Data.Function+import Data.Functor+import Data.Functor.Const+import Data.Functor.Identity+--import Data.Functor.Utils ( StateL(..), StateR(..), StateT(..), (#.) )+import Data.List_Type+import qualified Data.List as List+import Data.Maybe+import Data.Monoid+import Data.Proxy+--import Data.Ord ( Down(..) )+--import Data.Proxy ( Proxy(..) )++class (Functor t, Foldable t) => Traversable (t :: Type -> Type) where++    traverse :: forall (f :: Type -> Type) a b . Applicative f => (a -> f b) -> t a -> f (t b)+    traverse f = sequenceA . fmap f++    sequenceA :: forall (f :: Type -> Type) a . Applicative f => t (f a) -> f (t a)+    sequenceA = traverse id++    mapM :: forall (m :: Type -> Type) a b . Monad m => (a -> m b) -> t a -> m (t b)+    mapM = traverse++    sequence :: forall (m :: Type -> Type) a . Monad m => t (m a) -> m (t a)+    sequence = sequenceA++instance Traversable Maybe where+  traverse _ Nothing = pure Nothing+  traverse f (Just x) = Just <$> f x++instance Traversable [] where+  traverse f = List.foldr cons_f (pure [])+    where cons_f x ys = liftA2 (:) (f x) ys++instance forall a . Traversable (Either a) where+  traverse _ (Left x) = pure (Left x)+  traverse f (Right y) = Right <$> f y++instance Traversable Identity where+  traverse f (Identity a) = Identity <$> f a++instance Traversable Proxy where+  traverse _ _ = pure Proxy++instance forall m . Traversable (Const m) where+  traverse _ (Const m) = pure $ Const m++{-+-- | @since 4.15+deriving instance Traversable Solo++-- | @since 4.7.0.0+instance Traversable ((,) a) where+    traverse f (x, y) = (,) x <$> f y++-- | @since 2.01+instance Ix i => Traversable (Array i) where+    traverse f arr = listArray (bounds arr) `fmap` traverse f (elems arr)++-- | @since 4.7.0.0+instance Traversable Proxy where+    traverse _ _ = pure Proxy+    {-# INLINE traverse #-}+    sequenceA _ = pure Proxy+    {-# INLINE sequenceA #-}+    mapM _ _ = pure Proxy+    {-# INLINE mapM #-}+    sequence _ = pure Proxy+    {-# INLINE sequence #-}++-- | @since 4.7.0.0+instance Traversable (Const m) where+    traverse _ (Const m) = pure $ Const m++-- | @since 4.8.0.0+instance Traversable Dual where+    traverse f (Dual x) = Dual <$> f x++-- | @since 4.8.0.0+instance Traversable Sum where+    traverse f (Sum x) = Sum <$> f x++-- | @since 4.8.0.0+instance Traversable Product where+    traverse f (Product x) = Product <$> f x++-- | @since 4.8.0.0+instance Traversable First where+    traverse f (First x) = First <$> traverse f x++-- | @since 4.8.0.0+instance Traversable Last where+    traverse f (Last x) = Last <$> traverse f x++-- | @since 4.12.0.0+instance (Traversable f) => Traversable (Alt f) where+    traverse f (Alt x) = Alt <$> traverse f x++-- | @since 4.12.0.0+instance (Traversable f) => Traversable (Ap f) where+    traverse f (Ap x) = Ap <$> traverse f x++-- | @since 4.9.0.0+instance Traversable ZipList where+    traverse f (ZipList x) = ZipList <$> traverse f x+++-- Instances for GHC.Generics+-- | @since 4.9.0.0+instance Traversable U1 where+    traverse _ _ = pure U1+    {-# INLINE traverse #-}+    sequenceA _ = pure U1+    {-# INLINE sequenceA #-}+    mapM _ _ = pure U1+    {-# INLINE mapM #-}+    sequence _ = pure U1+    {-# INLINE sequence #-}++-- | @since 4.9.0.0+deriving instance Traversable V1++-- | @since 4.9.0.0+deriving instance Traversable Par1++-- | @since 4.9.0.0+deriving instance Traversable f => Traversable (Rec1 f)++-- | @since 4.9.0.0+deriving instance Traversable (K1 i c)++-- | @since 4.9.0.0+deriving instance Traversable f => Traversable (M1 i c f)++-- | @since 4.9.0.0+deriving instance (Traversable f, Traversable g) => Traversable (f :+: g)++-- | @since 4.9.0.0+deriving instance (Traversable f, Traversable g) => Traversable (f :*: g)++-- | @since 4.9.0.0+deriving instance (Traversable f, Traversable g) => Traversable (f :.: g)++-- | @since 4.9.0.0+deriving instance Traversable UAddr++-- | @since 4.9.0.0+deriving instance Traversable UChar++-- | @since 4.9.0.0+deriving instance Traversable UDouble++-- | @since 4.9.0.0+deriving instance Traversable UFloat++-- | @since 4.9.0.0+deriving instance Traversable UInt++-- | @since 4.9.0.0+deriving instance Traversable UWord++-- Instance for Data.Ord+-- | @since 4.12.0.0+deriving instance Traversable Down+-}+-- general functions++-- | 'for' is 'traverse' with its arguments flipped. For a version+-- that ignores the results see 'Data.Foldable.for_'.+for :: forall (t :: Type -> Type) (f :: Type -> Type) a b . (Traversable t, Applicative f) => t a -> (a -> f b) -> f (t b)+for = flip traverse++forM :: forall (t :: Type -> Type) (m :: Type -> Type) a b . (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b)+forM = flip mapM++{-+mapAccumL :: forall t s a b. Traversable t+          => (s -> a -> (s, b)) -> s -> t a -> (s, t b)+mapAccumL f s t = coerce (traverse @t @(StateL s) @a @b) (flip f) t s++mapAccumR :: forall t s a b. Traversable t+          => (s -> a -> (s, b)) -> s -> t a -> (s, t b)+mapAccumR f s t = coerce (traverse @t @(StateR s) @a @b) (flip f) t s++mapAccumM+  :: forall m t s a b. (Monad m, Traversable t)+  => (s -> a -> m (s, b))+  -> s -> t a -> m (s, t b)+mapAccumM f s t = coerce (mapM @t @(StateT s m) @a @b) (StateT #. flip f) t s++forAccumM+  :: (Monad m, Traversable t)+  => s -> t a -> (s -> a -> m (s, b)) -> m (s, t b)+forAccumM s t f = mapAccumM f s t++-}++fmapDefault :: forall t a b . Traversable t+            => (a -> b) -> t a -> t b+fmapDefault f = runIdentity . traverse (Identity . f)++foldMapDefault :: forall t m a . (Traversable t, Monoid m)+               => (a -> m) -> t a -> m+foldMapDefault f = getConst . traverse (Const . f)
lib/Data/Tuple.hs view
@@ -4,6 +4,7 @@   module Data.Tuple,   ()(..)   ) where+import Prelude()              -- do not import Prelude import Primitives  -- for () import Data.Bool import Data.Bounded
lib/Data/Type/Equality.hs view
@@ -1,6 +1,7 @@ module Data.Type.Equality(module Data.Type.Equality) where import Prelude +type (:~:) :: forall k . k -> k -> Type data a :~: b = (a ~ b) => Refl  instance forall a b . Eq (a :~: b) where@@ -18,6 +19,5 @@ castWith :: forall a b . (a :~: b) -> a -> b castWith Refl x = x --- Problem: :~: is not polykinded---apply :: forall (f :: Type -> Type) (g :: Type -> Type) a b . (f :~: g) -> (a :~: b) -> (f a :~: g b)---apply Refl Refl = Refl+apply :: forall f g a b . (f :~: g) -> (a :~: b) -> (f a :~: g b)+apply Refl Refl = Refl
lib/Data/Typeable.hs view
@@ -145,8 +145,8 @@ prim n = nullary "Primitives" n  instance Typeable ()          where typeRep = nullary "Data.Tuple"          "()"-instance Typeable Any         where typeRep = prim                          "Any"-instance Typeable Bool        where typeRep = nullary "Data.Bool_Type"      "Char"+instance Typeable AnyType     where typeRep = prim                          "AnyType"+instance Typeable Bool        where typeRep = nullary "Data.Bool_Type"      "Bool" instance Typeable Char        where typeRep = prim                          "Char" instance Typeable Int         where typeRep = prim                          "Int" instance Typeable Integer     where typeRep = nullary "Data.Integer_Type"   "Integer"@@ -174,7 +174,7 @@ instance Typeable Monad       where typeRep = nullary "Control.Monad"       "Monad"  instance Typeable (,)         where typeRep = nullary "Data.Tuple"          ","-instance Typeable (->)        where typeRep = nullary "Primitives"          "->"+instance Typeable (->)        where typeRep = prim                          "->" instance Typeable Either      where typeRep = nullary "Data.Either"         "Either" instance Typeable Map         where typeRep = nullary "Data.Map"            "Map" instance Typeable ST          where typeRep = nullary "Control.Monad.ST"    "ST"
lib/Data/Word.hs view
@@ -1,6 +1,7 @@--- Copyright 2023 Lennart Augustsson+-- Copyright 2023,2024 Lennart Augustsson -- See LICENSE file for full license.-module Data.Word(module Data.Word, Word) where+module Data.Word(Word) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bits import Data.Bool_Type@@ -16,6 +17,8 @@ import Data.Num import Data.Ord import Data.Real+import Numeric+import Text.Read import Text.Show  instance Num Word where@@ -38,6 +41,12 @@ instance Real Word where   toRational i = _integerToRational (_wordToInteger i) +instance Show Word where+  showsPrec = showIntegral++instance Read Word where+  readsPrec = readIntegral+ --------------------------------  instance Enum Word where@@ -81,16 +90,3 @@   bitSize _ = _wordSize   bit n = primWordShl 1 n   zeroBits = 0------------------------------------instance Show Word where-  show = showWord-    where-      showWord :: Word -> String-      showWord n =-        let-          c = chr (ord '0' + primWordToInt (rem n (10::Word)))-        in  case n < (10::Word) of-              False -> showWord (quot n (10::Word)) ++ [c]-              True  -> [c]
lib/Data/Word8.hs view
@@ -1,6 +1,7 @@--- Copyright 2023 Lennart Augustsson+-- Copyright 2023,2024 Lennart Augustsson -- See LICENSE file for full license.-module Data.Word8(module Data.Word8) where+module Data.Word8(Word8) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bits import Data.Bool_Type@@ -18,6 +19,8 @@ import Data.Ord import Data.Real import Data.Word+import Numeric+import Text.Read import Text.Show  newtype Word8 = W8 Word@@ -59,6 +62,12 @@ instance Real Word8 where   toRational = _integerToRational . _wordToInteger . unW8 +instance Show Word where+  showsPrec = showIntegral++instance Read Word where+  readsPrec = readIntegral+ --------------------------------  instance Enum Word8 where@@ -102,8 +111,3 @@   bitSize _ = 8   bit n = w8 (primWordShl 1 n)   zeroBits = 0------------------------------------instance Show Word8 where-  show = show . unW8
+ lib/Data/ZipList.hs view
@@ -0,0 +1,15 @@+module Data.ZipList(ZipList(..), getZipList) where+import Prelude++newtype ZipList a = ZipList [a]+  deriving (Eq, Ord, Show)++getZipList :: forall a . ZipList a -> [a]+getZipList (ZipList as) = as++instance Functor ZipList where+  fmap f (ZipList as) = ZipList (map f as)++instance Applicative ZipList where+  pure a = ZipList (repeat a)+  liftA2 f (ZipList xs) (ZipList ys) = ZipList (zipWith f xs ys)
lib/Foreign/C/String.hs view
@@ -4,6 +4,7 @@   peekCAString, peekCAStringLen,   withCAString,   ) where+import Prelude()              -- do not import Prelude import Primitives import Data.Char_Type import Foreign.Marshal.Alloc
lib/Foreign/Marshal/Alloc.hs view
@@ -3,6 +3,7 @@   free,   mallocBytes, callocBytes,   ) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error(undefined) import Foreign.Storable
lib/Foreign/Marshal/Array.hs view
@@ -20,7 +20,7 @@ peekArray size ptr | size <= 0 = return []                    | otherwise = f (size-1) []   where-    f 0 acc = do e <- peekElemOff ptr 0; return (e:acc)+    f n acc | n < 0 = return acc     f n acc = do e <- peekElemOff ptr n; f (n-1) (e:acc)  peekArray0 :: forall a . (Storable a, Eq a) => a -> Ptr a -> IO [a]
lib/Foreign/Ptr.hs view
@@ -1,4 +1,5 @@ module Foreign.Ptr(module Foreign.Ptr, Ptr) where+import Prelude()              -- do not import Prelude import Primitives import Data.Word import Data.Eq
lib/Foreign/Storable.hs view
@@ -1,4 +1,5 @@ module Foreign.Storable(Storable(..)) where+import Prelude()              -- do not import Prelude import Primitives import Control.Error(undefined) import Foreign.Ptr@@ -26,9 +27,12 @@ foreign import ccall "peekWord" c_peekWord :: Ptr Word -> IO Word foreign import ccall "pokeWord" c_pokeWord :: Ptr Word -> Word -> IO () +wordSizeInBytes :: Int+wordSizeInBytes = _wordSize `primIntQuot` 8+ instance Storable Word where-  sizeOf    _ = _wordSize-  alignment _ = _wordSize+  sizeOf    _ = wordSizeInBytes+  alignment _ = wordSizeInBytes   peek p      = c_peekWord p   poke p w    = c_pokeWord p w @@ -36,8 +40,8 @@ foreign import ccall "pokePtr" c_pokePtr :: forall a . Ptr (Ptr a) -> Ptr a -> IO ()  instance forall a . Storable (Ptr a) where-  sizeOf    _ = _wordSize-  alignment _ = _wordSize+  sizeOf    _ = wordSizeInBytes+  alignment _ = wordSizeInBytes   peek p      = c_peekPtr p   poke p w    = c_pokePtr p w @@ -45,7 +49,7 @@ foreign import ccall "pokeByte" c_pokeByte :: Ptr Word8 -> Word8 -> IO ()  instance Storable Word8 where-  sizeOf    _ = 8-  alignment _ = 8+  sizeOf    _ = 1+  alignment _ = 1   peek p      = c_peekByte p   poke p w    = c_pokeByte p w
lib/GHC/Stack.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module GHC.Stack(HasCallStack(..)) where+import Prelude()              -- do not import Prelude -- So we can import GHC.Stack. -- Sadly, this does not give us stack traces. :(
lib/GHC/Types.hs view
@@ -1,3 +1,4 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module GHC.Types() where+import Prelude()              -- do not import Prelude
+ lib/Numeric.hs view
@@ -0,0 +1,78 @@+module Numeric(+  showSigned,+  showIntAtBase,+  showInt,+  showBin,+  showHex,+  showOct,+  showIntegral,+    +  readSigned,+  readInt,+  readBin,+  readDec,+  readOct,+  readHex,+  readIntegral,+  ) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Error+import Data.Bool+import Data.Char+import Data.Eq+import Data.Function+import Data.Integral+import Data.List+import Data.Num+import Data.Ord+import Text.Read.Numeric+import Text.Show(ShowS, showChar)++showSigned :: forall a . (Ord a, Integral a) => (a -> ShowS) -> Int -> a -> ShowS+showSigned showPos p n r+    | n < 0 =+      if p > (6::Int) then+        '(' : '-' : showPos (-n) (')' : r)+      else+        '-' : showPos (-n) r+    | otherwise = showPos n r++-- | Shows a /non-negative/ 'Integral' number using the base specified by the+-- first argument, and the character representation specified by the second.+-- If the argument, n, is <0 and -n == n (i.e., n == minBound) it will+-- return the string for (abs n).+showIntAtBase :: forall a . (Ord a, Integral a) => a -> (Int -> Char) -> a -> ShowS+showIntAtBase base toChr an+  | base <= 1 = error "Numeric.showIntAtBase: unsupported base"+  | an < 0 =+    if -an < 0 then+      -- We are at minBound+      showPos (- quot an base) . showPos (- rem an base)+    else+      error "Numeric.showIntAtBase: negative argument"+  | otherwise = showPos an+   where+    showPos n r =+      let+        c = toChr (fromIntegral (rem n base))+      in  c `seq`+          if n < base then+            c : r+          else+            showPos (quot n base) (c : r)++showInt :: forall a . (Ord a, Integral a) => a -> ShowS+showInt = showIntAtBase 10 intToDigit++showHex :: forall a . (Ord a, Integral a) => a -> ShowS+showHex = showIntAtBase 16 intToDigit++showOct :: forall a . (Ord a, Integral a) => a -> ShowS+showOct = showIntAtBase 8  intToDigit++showBin :: forall a . (Ord a, Integral a) => a -> ShowS+showBin = showIntAtBase 2  intToDigit++showIntegral :: forall a . (Ord a, Integral a) => Int -> a -> ShowS+showIntegral = showSigned showInt
lib/Prelude.hs view
@@ -4,6 +4,7 @@   module Control.Applicative,   module Control.Error,   module Control.Monad,+  module Control.Monad.Fail,   module Data.Bool,   module Data.Bounded,   module Data.Char,@@ -23,50 +24,63 @@   module Data.Monoid,   module Data.Num,   module Data.Ord,-  module Data.Proxy,   module Data.Ratio,   module Data.Real,   module Data.RealFloat,+  module Data.RealFrac,   module Data.Records,+  module Data.Semigroup,   module Data.Tuple,+  module Data.Word,   module System.IO,+  module Text.Read,   module Text.Show,   module Text.String,+  Float,   usingMhs, _wordSize, _isWindows,   ) where-import Control.Applicative-import Control.Error-import Control.Monad-import Data.Bool-import Data.Bounded-import Data.Char-import Data.Double-import Data.Either-import Data.Enum-import Data.Eq-import Data.Floating-import Data.Fractional-import Data.Function-import Data.Functor-import Data.Int-import Data.Integer-import Data.Integral+import Prelude()              -- do not import Prelude+import Control.Applicative(Applicative(..))+import Control.Error(error, undefined)+import Control.Monad(Monad(..), mapM, mapM_, sequence, sequence_, (=<<))+import Control.Monad.Fail(MonadFail(..))+import Data.Bool(Bool(..), (&&), (||), not, otherwise)+import Data.Bounded(Bounded(..))+import Data.Char(Char, String)+import Data.Double(Double)+import Data.Either(Either(..), either)+import Data.Enum(Enum(..))+import Data.Eq(Eq(..))+import Data.Floating(Floating(..))+import Data.Fractional(Fractional(..), (^^))+import Data.Function(id, const, (.), flip, ($), seq, ($!), until, curry, uncurry)+import Data.Functor(Functor(..), (<$>))+import Data.Int(Int)+import Data.Integer(Integer)+import Data.Integral(Integral(..), fromIntegral, gcd, lcm, even, odd, (^)) import Data.List-import Data.Maybe-import Data.Monoid-import Data.Num-import Data.Ord-import Data.Proxy+import Data.Maybe(Maybe(..), maybe)+import Data.Monoid(Monoid(..))+import Data.Num(Num(..), subtract)+import Data.Ord(Ord(..), Ordering(..)) import Data.Ratio(Rational)-import Data.Real-import Data.RealFloat-import Data.Records-import Data.Tuple-import System.IO-import Text.Show+import Data.Real(Real(..), realToFrac)+import Data.RealFloat(RealFloat(..))+import Data.RealFrac(RealFrac(..))+import Data.Records  -- XXX redo this somehow+import Data.Semigroup(Semigroup(..))+import Data.Tuple(()(..), fst, snd)+import Data.Word(Word)+import System.IO(IO, putChar, putStr, putStrLn, print, getLine, getContents, interact,+                 FilePath, readFile, writeFile, appendFile,+                 cprint)+import Text.Read(ReadS, Read(..), read, reads, readParen, lex)+import Text.Show(Show(..), ShowS, shows, showChar, showString, showParen) import Text.String import Primitives(_wordSize, _isWindows)  -- So we can detect mhs vs ghc usingMhs :: Bool usingMhs = True++type Float = Double
lib/PrimTable.hs view
@@ -1,3 +1,4 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module PrimTable() where+import Prelude()              -- do not import Prelude
lib/Primitives.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Primitives(module Primitives) where+import Prelude()              -- do not import Prelude import Data.Bool_Type --import Data.List_Type import Data.Ordering_Type@@ -25,7 +26,6 @@ -- Types data AnyType data Char-data Handle data Int data Double data IO a
lib/System/Directory.hs view
@@ -1,7 +1,9 @@-module System.Directory(removeFile) where+module System.Directory(removeFile, doesFileExist) where import Prelude+import Control.Monad(when) import Foreign.C.String import Foreign.Ptr+import System.IO  foreign import ccall "unlink" c_unlink :: CString -> IO Int @@ -10,3 +12,10 @@   r <- withCAString fn c_unlink   when (r /= 0) $     error "removeFile failed"++doesFileExist :: FilePath -> IO Bool+doesFileExist fn = do+  mh <- openFileM fn ReadMode+  case mh of+    Nothing -> return False+    Just h  -> do { hClose h; return True }
lib/System/Environment.hs view
@@ -2,6 +2,7 @@ -- See LICENSE file for full license. module System.Environment(   getArgs,+  getProgName,   withArgs,   lookupEnv,   ) where@@ -36,3 +37,7 @@     return Nothing    else     Just <$> peekCAString cptr++-- XXX implement this+getProgName :: IO String+getProgName = return "???"
+ lib/System/Exit.hs view
@@ -0,0 +1,26 @@+module System.Exit(+  ExitCode(..),+  exitWith,+  exitFailure,+  exitSuccess,+  die,+  ) where+import Prelude+import Control.Exception+import System.IO++data ExitCode = ExitSuccess | ExitFailure Int+  deriving (Show)++-- XXX This needs work+exitWith :: forall a . ExitCode -> IO a+exitWith e = throwIO (Exn (show e))++exitFailure :: forall a . IO a+exitFailure = exitWith (ExitFailure 1)++exitSuccess :: forall a . IO a+exitSuccess = exitWith ExitSuccess++die :: forall a . String -> IO a+die err = hPutStrLn stderr err >> exitFailure
lib/System/IO.hs view
@@ -1,15 +1,37 @@--- Copyright 2023 Lennart Augustsson+-- Copyright 2023,2024 Lennart Augustsson -- See LICENSE file for full license. module System.IO(-  module System.IO, Handle, IO,-  module Data.Functor,-  module Control.Applicative,-  module Control.Monad,+  IO, Handle, FilePath,+  IOMode(..),+  stdin, stdout, stderr,+  hGetChar, hPutChar,+  putChar, getChar,+  hClose, hFlush,+  openFile, openFileM, openBinaryFile,+  hPutStr, hPutStrLn,+  putStr, putStrLn,+  print,+  hGetContents, getContents,+  hGetLine, getLine,+  interact,+  writeFile, readFile, appendFile,++  hSerialize, hDeserialize, cprint,+  writeSerialized, readSerialized,++  mkTextEncoding, hSetEncoding, utf8,++  getTimeMilli,+  openTmpFile,++  withFile,   ) where+import Prelude()              -- do not import Prelude import Primitives import Control.Applicative import Control.Error import Control.Monad+import Control.Monad.Fail import Data.Bool import Data.Char import Data.Eq@@ -24,31 +46,42 @@ import Foreign.C.String import Foreign.Marshal.Alloc import Foreign.Ptr+import System.IO.Unsafe  data FILE-newtype Handle = Handle (Ptr FILE)+data BFILE+newtype Handle = Handle (Ptr BFILE) -primHSerialize   :: forall a . Handle -> a -> IO ()+primHSerialize   :: forall a . Ptr BFILE -> a -> IO () primHSerialize    = primitive "IO.serialize"-primHPrint       :: forall a . Handle -> a -> IO ()+primHPrint       :: forall a . Ptr BFILE -> a -> IO () primHPrint        = primitive "IO.print"-primHDeserialize :: forall a . Handle -> IO a+primHDeserialize :: forall a . Ptr BFILE -> IO a primHDeserialize  = primitive "IO.deserialize"-primStdin        :: Handle+primStdin        :: Ptr FILE primStdin         = primitive "IO.stdin"-primStdout       :: Handle+primStdout       :: Ptr FILE primStdout        = primitive "IO.stdout"-primStderr       :: Handle+primStderr       :: Ptr FILE primStderr        = primitive "IO.stderr" -foreign import ccall "fopen"        c_fopen        :: CString -> CString -> IO Handle+foreign import ccall "fopen"        c_fopen        :: CString -> CString -> IO (Ptr FILE)+{- foreign import ccall "fclose"       c_fclose       :: Handle             -> IO Int foreign import ccall "fflush"       c_fflush       :: Handle             -> IO Int foreign import ccall "fgetc"        c_fgetc        :: Handle             -> IO Int foreign import ccall "fputc"        c_fputc        :: Int ->     Handle  -> IO Int-foreign import ccall "fwrite"       c_fwrite       :: CString -> Int -> Int -> Handle -> IO Int+-- foreign import ccall "fwrite"       c_fwrite       :: CString -> Int -> Int -> Handle -> IO Int+-} foreign import ccall "getTimeMilli" c_getTimeMilli ::                       IO Int +foreign import ccall "closeb"       c_closeb       :: Ptr BFILE          -> IO ()+foreign import ccall "flushb"       c_flushb       :: Ptr BFILE          -> IO ()+foreign import ccall "getb"         c_getb         :: Ptr BFILE          -> IO Int+foreign import ccall "putb"         c_putb         :: Int ->  Ptr BFILE  -> IO ()+foreign import ccall "add_FILE"     c_add_FILE     :: Ptr FILE           -> IO (Ptr BFILE)+foreign import ccall "add_utf8"     c_add_utf8     :: Ptr BFILE          -> IO (Ptr BFILE)+ ----------------------------------------------------------  instance Eq Handle where@@ -57,9 +90,6 @@ instance Show Handle where   show (Handle p) = "Handle-" ++ show p -nullHandle :: Handle-nullHandle = Handle nullPtr- type FilePath = String  data IOMode = ReadMode | WriteMode | AppendMode | ReadWriteMode@@ -77,37 +107,40 @@   fail         = error  hSerialize   :: forall a . Handle -> a -> IO ()-hSerialize   = primHSerialize+hSerialize (Handle p) = primHSerialize p  hDeserialize :: forall a . Handle -> IO a-hDeserialize = primHDeserialize+hDeserialize (Handle p) = primHDeserialize p  stdin        :: Handle-stdin        = primStdin+stdin        = bFILE primStdin stdout       :: Handle-stdout       = primStdout+stdout       = bFILE primStdout stderr       :: Handle-stderr       = primStderr+stderr       = bFILE primStderr +bFILE :: Ptr FILE -> Handle+bFILE = Handle . primPerformIO . (c_add_utf8 <=< c_add_FILE)+ hClose       :: Handle -> IO ()-hClose h     = do { c_fclose h; return () }  -- ignore error code+hClose (Handle p) = c_closeb p  hFlush       :: Handle -> IO ()-hFlush h     = do { c_fflush h; return () }  -- ignore error code+hFlush (Handle p) = c_flushb p  hGetChar :: Handle -> IO Char-hGetChar h = do-  c <- c_fgetc h+hGetChar (Handle p) = do+  c <- c_getb p   if c == (-1::Int) then     error "hGetChar: EOF"    else     return (chr c)  hPutChar :: Handle -> Char -> IO ()-hPutChar h c = do { c_fputc (ord c) h; return () }  -- ignore error code+hPutChar (Handle p) c = c_putb (ord c) p -openFileM :: FilePath -> IOMode -> IO (Maybe Handle)-openFileM p m = do+openFILEM :: FilePath -> IOMode -> IO (Maybe (Ptr FILE))+openFILEM p m = do   let     ms = case m of           ReadMode -> "r"@@ -115,11 +148,18 @@           AppendMode -> "a"           ReadWriteMode -> "w+"   h <- withCAString p $ \cp -> withCAString ms $ \ cm -> c_fopen cp cm-  if h == nullHandle then+  if h == nullPtr then     return Nothing    else     return (Just h) +openFileM :: FilePath -> IOMode -> IO (Maybe Handle)+openFileM p m = do+  mf <- openFILEM p m+  case mf of+    Nothing -> return Nothing+    Just p -> do { q <- c_add_utf8 =<< c_add_FILE p; return (Just (Handle q)) }+ openFile :: String -> IOMode -> IO Handle openFile p m = do   mh <- openFileM p m@@ -134,10 +174,12 @@ getChar = hGetChar stdin  cprint :: forall a . a -> IO ()-cprint a = primRnfNoErr a `seq` primHPrint stdout a+cprint a = primRnfNoErr a `seq` primHPrint p a+  where Handle p = stdout  cuprint :: forall a . a -> IO ()-cuprint = primHPrint stdout+cuprint = primHPrint p+  where Handle p = stdout  print :: forall a . (Show a) => a -> IO () print a = putStrLn (show a)@@ -154,12 +196,31 @@ hPutStrLn :: Handle -> String -> IO () hPutStrLn h s = hPutStr h s >> hPutChar h '\n' +hGetLine :: Handle -> IO String+hGetLine h = loop ""+  where loop s = do+          c <- hGetChar h+          if c == '\n' then+            return (reverse s)+           else+            loop (c:s)++getLine :: IO String+getLine = hGetLine stdin+ writeFile :: FilePath -> String -> IO () writeFile p s = do   h <- openFile p WriteMode   hPutStr h s   hClose h +appendFile :: FilePath -> String -> IO ()+appendFile p s = do+  h <- openFile p AppendMode+  hPutStr h s+  hClose h++{- -- Faster, but uses a lot more C memory. writeFileFast :: FilePath -> String -> IO () writeFileFast p s = do@@ -170,6 +231,7 @@   hClose h   when (l /= n) $     error "writeFileFast failed"+-}  -- Lazy readFile readFile :: FilePath -> IO String@@ -181,8 +243,8 @@  -- Lazy hGetContents hGetContents :: Handle -> IO String-hGetContents h = do-  c <- c_fgetc h+hGetContents h@(Handle p) = do+  c <- c_getb p   if c == (-1::Int) then do     hClose h   -- EOF, so close the handle     return ""@@ -190,6 +252,12 @@     cs <- unsafeInterleaveIO (hGetContents h)     return (chr c : cs)   +getContents :: IO String+getContents = hGetContents stdin++interact :: (String -> String) -> IO ()+interact f = getContents >>= putStr . f+ writeSerialized :: forall a . FilePath -> a -> IO () writeSerialized p s = do   h <- openFile p WriteMode@@ -206,13 +274,29 @@ getTimeMilli :: IO Int getTimeMilli = c_getTimeMilli -unsafeInterleaveIO :: forall a . IO a -> IO a-unsafeInterleaveIO ioa = return (primPerformIO ioa)+openBinaryFile :: String -> IOMode -> IO Handle+openBinaryFile p m = do+  mf <- openFILEM p m+  case mf of+    Nothing -> error $ "openBinaryFile: cannot open " ++ show p+    Just p -> do { q <- c_add_FILE p; return (Handle q) } --- MicroHs is always in binary mode-hSetBinaryMode :: Handle -> Bool -> IO ()-hSetBinaryMode _ _ = return ()+--------+-- For compatibility +data TextEncoding = UTF8++utf8 :: TextEncoding+utf8 = UTF8++mkTextEncoding :: String -> IO TextEncoding+mkTextEncoding "UTF-8//ROUNDTRIP" = return UTF8+mkTextEncoding _ = error "unknown text encoding"++-- Always in UTF8 mode+hSetEncoding :: Handle -> TextEncoding -> IO ()+hSetEncoding _ _ = return ()+ --------  -- Create a temporary file, take a prefix and a suffix@@ -232,14 +316,10 @@   h <- openFile tmp WriteMode   return (tmp, h) ------------- Helper for interactive system-class PrintOrRun a where-  printOrRun :: a -> IO ()--instance PrintOrRun (IO ()) where-  printOrRun a = a--instance forall a . Show a => PrintOrRun a where-  printOrRun a = putStrLn (show a)+-- XXX needs bracket+withFile :: forall r . FilePath -> IOMode -> (Handle -> IO r) -> IO r+withFile fn md io = do+  h <- openFile fn md+  r <- io h+  hClose h+  return r
lib/System/IO/MD5.hs view
@@ -8,8 +8,9 @@ import Foreign.Marshal.Alloc import Foreign.Marshal.Array import Foreign.Ptr+import System.IO -foreign import ccall "md5File"   c_md5File   :: Handle    -> Ptr Word -> IO ()+foreign import ccall "md5BFILE"  c_md5BFILE  :: Handle    -> Ptr Word -> IO () foreign import ccall "md5String" c_md5String :: CString   -> Ptr Word -> IO () foreign import ccall "md5Array"  c_md5Array  :: Ptr Word  -> Ptr Word -> Int -> IO () @@ -42,7 +43,7 @@ md5String s = primPerformIO $ withCAString s $ chksum . c_md5String  md5Handle :: Handle -> IO MD5CheckSum-md5Handle h = chksum $ c_md5File h+md5Handle h = chksum $ c_md5BFILE h  md5File :: FilePath -> IO (Maybe MD5CheckSum) md5File fn = do
+ lib/System/IO/PrintOrRun.hs view
@@ -0,0 +1,17 @@+-- Copyright 2023,2024 Lennart Augustsson+-- See LICENSE file for full license.+module System.IO.PrintOrRun(PrintOrRun(..)) where+import Prelude()              -- do not import Prelude+import Primitives+import System.IO+import Text.Show++-- Helper for interactive system+class PrintOrRun a where+  printOrRun :: a -> IO ()++instance PrintOrRun (IO ()) where+  printOrRun a = a++instance forall a . Show a => PrintOrRun a where+  printOrRun a = putStrLn (show a)
+ lib/System/IO/Unsafe.hs view
@@ -0,0 +1,9 @@+module System.IO.Unsafe(unsafePerformIO, unsafeInterleaveIO) where+import Prelude()+import Primitives++unsafePerformIO :: IO a -> a+unsafePerformIO = primPerformIO++unsafeInterleaveIO :: forall a . IO a -> IO a+unsafeInterleaveIO ioa = primReturn (primPerformIO ioa)
lib/System/Process.hs view
@@ -1,5 +1,6 @@ module System.Process(callCommand) where import Prelude+import Control.Monad(when) import Foreign.C.String  foreign import ccall "system" systemc :: CString -> IO Int
+ lib/Text/ParserCombinators/ReadP.hs view
@@ -0,0 +1,428 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Text.ParserCombinators.ReadP+-- Copyright   :  (c) The University of Glasgow 2002+-- License     :  BSD-style (see the file libraries/base/LICENSE)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  provisional+-- Portability :  non-portable (local universal quantification)+--+-- This is a library of parser combinators, originally written by Koen Claessen.+-- It parses all alternatives in parallel, so it never keeps hold of+-- the beginning of the input string, a common source of space leaks with+-- other parsers.  The @('+++')@ choice combinator is genuinely commutative;+-- it makes no difference which branch is \"shorter\".++-----------------------------------------------------------------------------++module Text.ParserCombinators.ReadP+  (+  -- * The 'ReadP' type+  ReadP,++  -- * Primitive operations+  get,+  look,+  (+++),+  (<++),+  gather,++  -- * Other operations+  pfail,+  eof,+  satisfy,+  char,+  string,+  munch,+  munch1,+  skipSpaces,+  choice,+  count,+  between,+  option,+  optional,+  many,+  many1,+  skipMany,+  skipMany1,+  sepBy,+  sepBy1,+  endBy,+  endBy1,+  chainr,+  chainl,+  chainl1,+  chainr1,+  manyTill,++  -- * Running a parser+  ReadS,+  readP_to_S,+  readS_to_P,++  -- * Properties+  -- $properties+  )+ where++import Control.Applicative+import Control.Alternative+import Control.Error+import Control.Monad+import Data.Bool+import Data.Char+import Data.Eq+import Data.Function+import Data.Int+import Data.List+import Data.Num+import Data.Tuple++infixr 5 +++, <++++------------------------------------------------------------------------+-- ReadS++-- | A parser for a type @a@, represented as a function that takes a+-- 'String' and returns a list of possible parses as @(a,'String')@ pairs.+--+-- Note that this kind of backtracking parser is very inefficient;+-- reading a large structure may be quite slow (cf 'ReadP').+type ReadS a = String -> [(a,String)]++-- ---------------------------------------------------------------------------+-- The P type+-- is representation type -- should be kept abstract++data P a+  = Get (Char -> P a)+  | Look (String -> P a)+  | Fail+  | Result a (P a)+  | Final [(a,String)]+--  deriving Functor -- ^ @since 4.8.0.0+instance Functor P where+  fmap f (Get p) = Get (\ c -> fmap f (p c))++-- Monad, MonadPlus++-- | @since 4.5.0.0+instance Applicative P where+  pure x = Result x Fail+  (<*>) = ap++-- | @since 2.01+instance MonadPlus P++-- | @since 2.01+instance Monad P where+  (Get f)         >>= k = Get (\c -> f c >>= k)+  (Look f)        >>= k = Look (\s -> f s >>= k)+  Fail            >>= _ = Fail+  (Result x p)    >>= k = k x <|> (p >>= k)+  (Final (r:rs))  >>= k = final [ys' | (x,s) <- (r:rs), ys' <- run (k x) s]++-- | @since 4.9.0.0+instance MonadFail P where+  fail _ = Fail++-- | @since 4.5.0.0+instance Alternative P where+  empty = Fail++  -- most common case: two gets are combined+  Get f1     <|> Get f2     = Get (\c -> f1 c <|> f2 c)++  -- results are delivered as soon as possible+  Result x p <|> q          = Result x (p <|> q)+  p          <|> Result x q = Result x (p <|> q)++  -- fail disappears+  Fail       <|> p          = p+  p          <|> Fail       = p++  -- two finals are combined+  -- final + look becomes one look and one final (=optimization)+  -- final + sthg else becomes one look and one final+  Final r       <|> Final t = Final (r ++ t)+  Final (r:rs)  <|> Look f  = Look (\s -> Final (r:(rs ++ run (f s) s)))+  Final (r:rs)  <|> p       = Look (\s -> Final (r:(rs ++ run p s)))+  Look f        <|> Final r = Look (\s -> Final (run (f s) s ++ r))+  p             <|> Final r = Look (\s -> Final (run p s ++ r))++  -- two looks are combined (=optimization)+  -- look + sthg else floats upwards+  Look f     <|> Look g     = Look (\s -> f s <|> g s)+  Look f     <|> p          = Look (\s -> f s <|> p)+  p          <|> Look f     = Look (\s -> p <|> f s)++-- ---------------------------------------------------------------------------+-- The ReadP type++newtype ReadP a = R (forall b . (a -> P b) -> P b)++-- | @since 2.01+instance Functor ReadP where+  fmap h (R f) = R (\k -> f (k . h))++-- | @since 4.6.0.0+instance Applicative ReadP where+    pure x = R (\k -> k x)+    (<*>) = ap+    -- liftA2 = liftM2++-- | @since 2.01+instance Monad ReadP where+  R m >>= f = R (\k -> m (\a -> let { R m' = f a } in m' k))++-- | @since 4.9.0.0+instance MonadFail ReadP where+  fail _    = R (\_ -> Fail)++-- | @since 4.6.0.0+instance Alternative ReadP where+  empty = pfail+  (<|>) = (+++)++-- | @since 2.01+instance MonadPlus ReadP++-- ---------------------------------------------------------------------------+-- Operations over P++final :: forall a . [(a,String)] -> P a+final [] = Fail+final rs = Final rs++run :: forall a . P a -> ReadS a+run (Get f)         (c:s) = run (f c) s+run (Look f)        s     = run (f s) s+run (Result x p)    s     = (x,s) : run p s+run (Final rs)      _     = rs+run _               _     = []++-- ---------------------------------------------------------------------------+-- Operations over ReadP++get :: ReadP Char+-- ^ Consumes and returns the next character.+--   Fails if there is no input left.+get = R Get++look :: ReadP String+-- ^ Look-ahead: returns the part of the input that is left, without+--   consuming it.+look = R Look++pfail :: forall a . ReadP a+-- ^ Always fails.+pfail = R (\_ -> Fail)++(+++) :: forall a . ReadP a -> ReadP a -> ReadP a+-- ^ Symmetric choice.+R f1 +++ R f2 = R (\k -> f1 k <|> f2 k)++(<++) :: forall a . ReadP a -> ReadP a -> ReadP a+-- ^ Local, exclusive, left-biased choice: If left parser+--   locally produces any result at all, then right parser is+--   not used.+R f0 <++ q =+  do s <- look+     probe (f0 return) s (0::Int)+ where+  probe (Get f)        (c:s) n = probe (f c) s (n + (1::Int))+  probe (Look f)       s     n = probe (f s) s n+  probe p@(Result _ _) _     n = discard n >> R (p >>=)+  probe (Final r)      _     _ = R (Final r >>=)+  probe _              _     _ = q++  discard n = if n == 0::Int then return () else get >> discard (n - (1::Int))++gather :: forall a . ReadP a -> ReadP (String, a)+-- ^ Transforms a parser into one that does the same, but+--   in addition returns the exact characters read.+--   IMPORTANT NOTE: 'gather' gives a runtime error if its first argument+--   is built using any occurrences of readS_to_P.+gather (R m)+  = R (\k -> gath id (m (\a -> return (\s -> k (s,a)))))+ where+  gath :: forall b . (String -> String) -> P (String -> P b) -> P b+  gath l (Get f)      = Get (\c -> gath (l.(c:)) (f c))+  gath _ Fail         = Fail+  gath l (Look f)     = Look (\s -> gath l (f s))+  gath l (Result k p) = k (l []) <|> gath l p+  gath _ (Final _)    = error "do not use readS_to_P in gather!"++-- ---------------------------------------------------------------------------+-- Derived operations++satisfy :: (Char -> Bool) -> ReadP Char+-- ^ Consumes and returns the next character, if it satisfies the+--   specified predicate.+satisfy p = do c <- get; if p c then return c else pfail++char :: Char -> ReadP Char+-- ^ Parses and returns the specified character.+char c = satisfy (c ==)++eof :: ReadP ()+-- ^ Succeeds iff we are at the end of input+eof = do { s <- look+         ; if null s then return ()+                     else pfail }++string :: String -> ReadP String+-- ^ Parses and returns the specified string.+string this = do s <- look; scan this s+ where+  scan []     _               = return this+  scan (x:xs) (y:ys) | x == y = do _ <- get; scan xs ys+  scan _      _               = pfail++munch :: (Char -> Bool) -> ReadP String+-- ^ Parses the first zero or more characters satisfying the predicate.+--   Always succeeds, exactly once having consumed all the characters+--   Hence NOT the same as (many (satisfy p))+munch p =+  do s <- look+     scan s+ where+  scan (c:cs) | p c = do _ <- get; s <- scan cs; return (c:s)+  scan _            = return ""++munch1 :: (Char -> Bool) -> ReadP String+-- ^ Parses the first one or more characters satisfying the predicate.+--   Fails if none, else succeeds exactly once having consumed all the characters+--   Hence NOT the same as (many1 (satisfy p))+munch1 p =+  do c <- get+     if p c then do s <- munch p; return (c:s)+            else pfail++choice :: forall a . [ReadP a] -> ReadP a+-- ^ Combines all parsers in the specified list.+choice []     = pfail+choice [p]    = p+choice (p:ps) = p +++ choice ps++skipSpaces :: ReadP ()+-- ^ Skips all whitespace.+skipSpaces =+  do s <- look+     skip s+ where+  skip (c:s) | isSpace c = do _ <- get; skip s+  skip _                 = return ()++count :: forall a . Int -> ReadP a -> ReadP [a]+-- ^ @count n p@ parses @n@ occurrences of @p@ in sequence. A list of+--   results is returned.+count n p = sequence (replicate n p)++between :: forall a open close . ReadP open -> ReadP close -> ReadP a -> ReadP a+-- ^ @between open close p@ parses @open@, followed by @p@ and finally+--   @close@. Only the value of @p@ is returned.+between open close p = do _ <- open+                          x <- p+                          _ <- close+                          return x++option :: forall a . a -> ReadP a -> ReadP a+-- ^ @option x p@ will either parse @p@ or return @x@ without consuming+--   any input.+option x p = p +++ return x++optional :: forall a . ReadP a -> ReadP ()+-- ^ @optional p@ optionally parses @p@ and always returns @()@.+optional p = (p >> return ()) +++ return ()++many :: forall a . ReadP a -> ReadP [a]+-- ^ Parses zero or more occurrences of the given parser.+many p = return [] +++ many1 p++many1 :: forall a . ReadP a -> ReadP [a]+-- ^ Parses one or more occurrences of the given parser.+many1 p = liftM2 (:) p (many p)++skipMany :: forall a . ReadP a -> ReadP ()+-- ^ Like 'many', but discards the result.+skipMany p = many p >> return ()++skipMany1 :: forall a . ReadP a -> ReadP ()+-- ^ Like 'many1', but discards the result.+skipMany1 p = p >> skipMany p++sepBy :: forall a sep . ReadP a -> ReadP sep -> ReadP [a]+-- ^ @sepBy p sep@ parses zero or more occurrences of @p@, separated by @sep@.+--   Returns a list of values returned by @p@.+sepBy p sep = sepBy1 p sep +++ return []++sepBy1 :: forall a sep . ReadP a -> ReadP sep -> ReadP [a]+-- ^ @sepBy1 p sep@ parses one or more occurrences of @p@, separated by @sep@.+--   Returns a list of values returned by @p@.+sepBy1 p sep = liftM2 (:) p (many (sep >> p))++endBy :: forall a sep . ReadP a -> ReadP sep -> ReadP [a]+-- ^ @endBy p sep@ parses zero or more occurrences of @p@, separated and ended+--   by @sep@.+endBy p sep = many (do { x <- p ; _ <- sep ; return x})++endBy1 :: forall a sep . ReadP a -> ReadP sep -> ReadP [a]+-- ^ @endBy p sep@ parses one or more occurrences of @p@, separated and ended+--   by @sep@.+endBy1 p sep = many1 (do { x <- p ; _ <- sep ; return x})++chainr :: forall a . ReadP a -> ReadP (a -> a -> a) -> a -> ReadP a+-- ^ @chainr p op x@ parses zero or more occurrences of @p@, separated by @op@.+--   Returns a value produced by a /right/ associative application of all+--   functions returned by @op@. If there are no occurrences of @p@, @x@ is+--   returned.+chainr p op x = chainr1 p op +++ return x++chainl :: forall a . ReadP a -> ReadP (a -> a -> a) -> a -> ReadP a+-- ^ @chainl p op x@ parses zero or more occurrences of @p@, separated by @op@.+--   Returns a value produced by a /left/ associative application of all+--   functions returned by @op@. If there are no occurrences of @p@, @x@ is+--   returned.+chainl p op x = chainl1 p op +++ return x++chainr1 :: forall a . ReadP a -> ReadP (a -> a -> a) -> ReadP a+-- ^ Like 'chainr', but parses one or more occurrences of @p@.+chainr1 p op = scan+  where scan   = p >>= rest+        rest x = do f <- op+                    y <- scan+                    return (f x y)+                 +++ return x++chainl1 :: forall a . ReadP a -> ReadP (a -> a -> a) -> ReadP a+-- ^ Like 'chainl', but parses one or more occurrences of @p@.+chainl1 p op = p >>= rest+  where rest x = do f <- op+                    y <- p+                    rest (f x y)+                 +++ return x++manyTill :: forall a end . ReadP a -> ReadP end -> ReadP [a]+-- ^ @manyTill p end@ parses zero or more occurrences of @p@, until @end@+--   succeeds. Returns a list of values returned by @p@.+manyTill p end = scan+  where scan = (end >> return []) <++ (liftM2 (:) p scan)++-- ---------------------------------------------------------------------------+-- Converting between ReadP and Read++readP_to_S :: forall a . ReadP a -> ReadS a+-- ^ Converts a parser into a Haskell ReadS-style function.+--   This is the main way in which you can \"run\" a 'ReadP' parser:+--   the expanded type is+-- @ readP_to_S :: ReadP a -> String -> [(a,String)] @+readP_to_S (R f) = run (f return)++readS_to_P :: forall a . ReadS a -> ReadP a+-- ^ Converts a Haskell ReadS-style function into a parser.+--   Warning: This introduces local backtracking in the resulting+--   parser, and therefore a possible inefficiency.+readS_to_P r =+  R (\k -> Look (\s -> final [bs'' | (a,s') <- r s, bs'' <- run (k a) s']))
+ lib/Text/ParserCombinators/ReadPrec.hs view
@@ -0,0 +1,177 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  Text.ParserCombinators.ReadPrec+-- Copyright   :  (c) The University of Glasgow 2002+-- License     :  BSD-style (see the file libraries/base/LICENSE)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  provisional+-- Portability :  non-portable (uses Text.ParserCombinators.ReadP)+--+-- This library defines parser combinators for precedence parsing.++-----------------------------------------------------------------------------++module Text.ParserCombinators.ReadPrec+  (+  ReadPrec,++  -- * Precedences+  Prec,+  minPrec,++  -- * Precedence operations+  lift,+  prec,+  step,+  reset,++  -- * Other operations+  -- | All are based directly on their similarly-named 'ReadP' counterparts.+  get,+  look,+  (+++),+  (<++),+  pfail,+  choice,++  -- * Converters+  readPrec_to_P,+  readP_to_Prec,+  readPrec_to_S,+  readS_to_Prec,+  )+ where+++import Text.ParserCombinators.ReadP+  ( ReadP+  , ReadS+  , readP_to_S+  , readS_to_P+  )++import qualified Text.ParserCombinators.ReadP as ReadP+  ( get+  , look+  , (+++), (<++)+  , pfail+  )++import Control.Applicative+import Control.Alternative+import Control.Monad+import Data.Char+import Data.Int+import Data.List+import Data.Num+import Data.Ord++-- ---------------------------------------------------------------------------+-- The readPrec type++newtype ReadPrec a = P (Prec -> ReadP a)++-- Functor, Monad, MonadPlus++-- | @since 2.01+instance Functor ReadPrec where+  fmap h (P f) = P (\n -> fmap h (f n))++-- | @since 4.6.0.0+instance Applicative ReadPrec where+    pure x  = P (\_ -> pure x)+    (<*>) = ap+    liftA2 = liftM2++-- | @since 2.01+instance Monad ReadPrec where+  P f >>= k = P (\n -> do {a <- f n; let {P f' = k a}; f' n})++-- | @since 4.9.0.0+instance MonadFail ReadPrec where+  fail s    = P (\_ -> fail s)++-- | @since 2.01+instance MonadPlus ReadPrec++-- | @since 4.6.0.0+instance Alternative ReadPrec where+  empty = pfail+  (<|>) = (+++)++-- precedences+type Prec = Int++minPrec :: Prec+minPrec = 0++-- ---------------------------------------------------------------------------+-- Operations over ReadPrec++lift :: forall a . ReadP a -> ReadPrec a+-- ^ Lift a precedence-insensitive 'ReadP' to a 'ReadPrec'.+lift m = P (\_ -> m)++step :: forall a . ReadPrec a -> ReadPrec a+-- ^ Increases the precedence context by one.+step (P f) = P (\n -> f (n+1))++reset :: forall a . ReadPrec a -> ReadPrec a+-- ^ Resets the precedence context to zero.+reset (P f) = P (\_ -> f minPrec)++prec :: forall a . Prec -> ReadPrec a -> ReadPrec a+-- ^ @(prec n p)@ checks whether the precedence context is+--   less than or equal to @n@, and+--+--   * if not, fails+--+--   * if so, parses @p@ in context @n@.+prec n (P f) = P (\c -> if c <= n then f n else ReadP.pfail)++-- ---------------------------------------------------------------------------+-- Derived operations++get :: ReadPrec Char+-- ^ Consumes and returns the next character.+--   Fails if there is no input left.+get = lift ReadP.get++look :: ReadPrec String+-- ^ Look-ahead: returns the part of the input that is left, without+--   consuming it.+look = lift ReadP.look++(+++) :: forall a . ReadPrec a -> ReadPrec a -> ReadPrec a+-- ^ Symmetric choice.+P f1 +++ P f2 = P (\n -> f1 n ReadP.+++ f2 n)++(<++) :: forall a . ReadPrec a -> ReadPrec a -> ReadPrec a+-- ^ Local, exclusive, left-biased choice: If left parser+--   locally produces any result at all, then right parser is+--   not used.+P f1 <++ P f2 = P (\n -> f1 n ReadP.<++ f2 n)++pfail :: forall a . ReadPrec a+-- ^ Always fails.+pfail = lift ReadP.pfail++choice :: forall a . [ReadPrec a] -> ReadPrec a+-- ^ Combines all parsers in the specified list.+choice ps = foldr (+++) pfail ps++-- ---------------------------------------------------------------------------+-- Converting between ReadPrec and Read++readPrec_to_P :: forall a . ReadPrec a -> (Int -> ReadP a)+readPrec_to_P (P f) = f++readP_to_Prec :: forall a . (Int -> ReadP a) -> ReadPrec a+readP_to_Prec f = P f++readPrec_to_S :: forall a . ReadPrec a -> (Int -> ReadS a)+readPrec_to_S (P f) n = readP_to_S (f n)++readS_to_Prec :: forall a . (Int -> ReadS a) -> ReadPrec a+readS_to_Prec f = P (\n -> readS_to_P (f n))
lib/Text/PrettyPrint/HughesPJ.hs view
@@ -16,7 +16,7 @@   Style,   render, renderStyle,   ) where-import Prelude+import Prelude hiding ((<>))  infixl 6 <>, <+> infixl 5 $$, $+$
+ lib/Text/Read.hs view
@@ -0,0 +1,131 @@+-- Copyright 2023,2024 Lennart Augustsson+-- See LICENSE file for full license.+-- Temporary Read class+module Text.Read(+  ReadS,+  Read(..),+  read,+  reads,+  readMaybe,+  readParen,+  lex,+  ) where+import Prelude()              -- do not import Prelude+import Primitives+import Control.Error+import Data.Char+import Data.Bool+import Data.Either+import Data.Eq+import Data.Function+import Data.List+import Data.Maybe_Type+import Data.Num+import Data.Ord+import Data.Int+import Text.Read.Numeric+import Text.Read.Lex++type ReadS a = String -> [(a, String)]++class Read a where+  readsPrec    :: Int -> ReadS a+  readList     :: ReadS [a]++  readList = readParen False (\r -> [ pr+                                    | ("[",s) <- lex r+                                    , pr <- readl s])+    where readl  s = [([],t)   | ("]",t)  <- lex s] +++                     [(x:xs,u) | (x,t)    <- reads s,+                                 (xs,u)   <- readl' t]+          readl' s = [([],t)   | ("]",t)  <- lex s] +++                     [(x:xs,v) | (",",t)  <- lex s,+                                 (x,u)    <- reads t,+                                 (xs,v)   <- readl' u]++reads :: forall a . Read a => ReadS a+reads = readsPrec 0++read :: forall a . Read a => String -> a+read s =+  case readMaybe s of+    Just a  -> a+    Nothing -> error "read: failed"++readMaybe :: forall a . Read a => String -> Maybe a+readMaybe s =+  case readsPrec 0 s of+    [(a, ss)] | [] <- dropSpace ss -> Just a+    _ -> Nothing++-------------------------------------------------------+-- To avoid circular imports, some instances go here.++instance Read Int where+  readsPrec = readIntegral++instance forall a . Read a => Read [a] where+  readsPrec _ = readList++instance Read Bool where+  readsPrec _ = readBoundedEnum++instance Read Ordering where+  readsPrec _ = readBoundedEnum++instance forall a . Read a => Read (Maybe a) where+  readsPrec p u = [ (Nothing :: Maybe a, t) | ("Nothing", t) <- lex u ] +++                  readParen (p > 10) ( \ r ->+                    [ (Just a,  t) | ("Just",    s) <- lex r, (a, t) <- readsPrec 11 s ]+                    ) u++instance forall a b . (Read a, Read b) => Read (Either a b) where+  readsPrec p = readParen (p > 10) $ \ r ->+                [ (Left  a, t) | ("Left",  s) <- lex r, (a, t) <- readsPrec 11 s ] +++                [ (Right b, t) | ("Right", s) <- lex r, (b, t) <- readsPrec 11 s ]++instance Read () where+  readsPrec p  = readParen False $+                   \ r -> [((),t) | ("(",s) <- lex r,+                                    (")",t) <- lex s ]++instance forall a b . (Read a, Read b) => Read (a,b)  where+  readsPrec p = readParen True $+                  \ r -> [((a, b), u) | (a, s)   <- reads r,+                                        (",", t) <- lex s,+                                        (b, u)   <- reads t ]++instance Read Char where+    readsPrec p = readParen False $+                    \ r -> [(c,t) | ('\'':s,t)<- lex r,+                                    (c,"\'")  <- readLitChar s]+ +    readList = readParen False $ \ r -> [(l,t) | ('"':s, t) <- lex r,+                                                 (l,_)      <- readl s ]+        where readl ('"':s)      = [("",s)]+              readl ('\\':'&':s) = readl s+              readl s            = [(c:cs,u) | (c ,t) <- readLitChar s,+                                               (cs,u) <- readl t ]++readLitChar :: ReadS Char+readLitChar ('\\':s) = readEsc s+readLitChar (c:s)    = [(c, s)]++readEsc :: ReadS Char+readEsc ('a':s)  = [('\a',s)]+readEsc ('b':s)  = [('\b',s)]+readEsc ('f':s)  = [('\f',s)]+readEsc ('n':s)  = [('\n',s)]+readEsc ('r':s)  = [('\r',s)]+readEsc ('t':s)  = [('\t',s)]+readEsc ('v':s)  = [('\v',s)]+readEsc ('\\':s) = [('\\',s)]+readEsc ('"':s)  = [('"',s)]+readEsc ('\'':s) = [('\'',s)]+readEsc ('^':c:s) | c >= '@' && c <= '_'+                 = [(chr (ord c - ord '@'), s)]+readEsc s@(d:_) | isDigit d+                 = [(chr n, t) | (n,t) <- readDec s]+readEsc ('o':s)  = [(chr n, t) | (n,t) <- readOct s]+readEsc ('x':s)  = [(chr n, t) | (n,t) <- readHex s]+readEsc _        = []
+ lib/Text/Read/Lex.hs view
@@ -0,0 +1,71 @@+module Text.Read.Lex(lex, dropSpace) where+import Prelude()              -- do not import Prelude+import Primitives+import Data.Bool+import Data.Char+import Data.Eq+import Data.List+import Data.Ord++type ReadS a = String -> [(a, String)]++lex :: ReadS String+lex []       = [("","")]+lex ('\'':s) = [('\'':ch++"'", t) | (ch,'\'':t) <- lexLitChar s,+                                    ch /= "'" ]+lex ('"':s)  = [('"':str, t) | (str,t) <- lexString s]+  where+    lexString ('"':s) = [("\"",s)]+    lexString s = [(ch++str, u)+                  | (ch,t)  <- lexStrItem s,+                    (str,u) <- lexString t ]++    lexStrItem ('\\':'&':s) =  [("\\&",s)]+    lexStrItem ('\\':c:s) | isSpace c = [("\\&",t) |+                                         '\\':t <- [dropSpace s]]+    lexStrItem s = lexLitChar s++lex (c:s) | isSpace c  = lex s+          | isSingle c = [([c],s)]+          | isSym c    = [(c:sym,t)    | (sym,t) <- [span isSym s]]+          | isAlpha c  = [(c:nam,t)    | (nam,t) <- [span isIdChar s]]+          | isDigit c  = [(c:ds++fe,t) | (ds,s)  <- [span isDigit s],+                                         (fe,t)  <- lexFracExp s ]+          | otherwise  = []    -- bad character  +  where  +    isSingle c = c `elem` ",;()[]{}_`"+    isSym c    = c `elem` "!@#$%&?+./<=>?\\^|:-~"+    isIdChar c = isAlphaNum c || c `elem` "_'"++    lexFracExp ('.':c:cs) | isDigit c+      = [('.':ds++e,u) | (ds,t) <- lexDigits (c:cs),+         (e,u) <- lexExp t]+    lexFracExp s = lexExp s+ +    lexExp (e:s) | e `elem` "eE"+      = [(e:c:ds,u) | (c:t)  <- [s], c `elem` "+-",+          (ds,u) <- lexDigits t] +++        [(e:ds,t)   | (ds,t) <- lexDigits s]+    lexExp s = [("",s)]++lexDigits :: ReadS String+lexDigits s = [(cs, t) | (cs@(_:_), t) <- [span isDigit s]]++lexLitChar :: ReadS String+lexLitChar ('\\':s) = [ prefix '\\' c | c <- lexEsc s ]+  where+    lexEsc (c:s)     | c `elem` "abfnrtv\\\"'" = [([c],s)]+    lexEsc ('^':c:s) | c >= '@' && c <= '_'    = [(['^',c],s)]+    lexEsc ('o':s)               = [prefix 'o' (span isOctDigit s)]+    lexEsc ('x':s)               = [prefix 'x' (span isHexDigit s)]+    lexEsc s@(d:_)   | isDigit d = [span isDigit s]+    lexEsc _                     = []++    prefix c (t,s) = (c:t, s)+lexLitChar (c:cs) = [([c], cs)]+lexLitChar [] = []++dropSpace :: String -> String+dropSpace [] = []+dropSpace ccs@(c:cs) | isSpace c = dropSpace cs+                     | True      = ccs
+ lib/Text/Read/Numeric.hs view
@@ -0,0 +1,80 @@+module Text.Read.Numeric(+  readParen,+  --+  readSigned,+  readInt,+  readBin,+  readDec,+  readOct,+  readHex,+  readIntegral,+  readBoundedEnum,+  ) where+import Prelude()              -- do not import Prelude+import Primitives+import Data.Bool+import Data.Bounded+import Data.Char+import Data.Eq+import Data.Enum+import Data.Function+import Data.Integral+import Data.List+import Data.Maybe_Type+import Data.Num+import Data.Ord+import Text.Read.Lex(lex, dropSpace)+import Text.Show++type ReadS a = String -> [(a, String)]++readParen :: forall a . Bool -> ReadS a -> ReadS a  +readParen b g =  if b then mandatory else optional  +  where optional r  = g r ++ mandatory r  +        mandatory r = [(x,u) | ("(",s) <- lex r,  +                               (x,t)   <- optional s,  +                               (")",u) <- lex t ]++--------------------------------------------------------++readInt :: forall a . Num a => a -> (Char -> Bool)  -> (Char -> Int) -> ReadS a+readInt base isDig valDig cs@(c:_) | isDig c = loop 0 cs+  where loop r (c:cs) | isDig c = loop (r * base + fromIntegral (valDig c)) cs+        loop r ds = [(r, ds)]+readInt _ _ _ _ = []  ++readBin :: forall a . (Num a) => ReadS a+readBin = readInt 2 isBinDigit digitToInt++isBinDigit :: Char -> Bool+isBinDigit c = c == '0' || c == '1'++readOct :: forall a . (Num a) => ReadS a+readOct = readInt 8 isOctDigit digitToInt++readDec :: forall a . (Num a) => ReadS a+readDec = readInt 10 isDigit digitToInt++readHex :: forall a . (Num a) => ReadS a+readHex = readInt 16 isHexDigit digitToInt++readSigned :: forall a . (Num a) => ReadS a -> ReadS a+readSigned readPos = readParen False read'+  where+    read' :: ReadS a+    read' r  = readPos r +++               [ (- x, t) | ("-", s) <- lex r, (x, t) <- readPos s ]++readIntegral :: forall a . (Integral a) => Int -> ReadS a+readIntegral _ = readSigned (readAny . dropSpace)+  where readAny ('0':'x':cs) = readHex cs+        readAny ('0':'X':cs) = readHex cs+        readAny ('0':'o':cs) = readOct cs+        readAny ('0':'O':cs) = readOct cs+        readAny ('0':'b':cs) = readBin cs+        readAny ('0':'B':cs) = readBin cs+        readAny cs = readDec cs++readBoundedEnum :: forall a . (Enum a, Bounded a, Show a) => ReadS a+readBoundedEnum = \ r -> [ (e, t) | (s, t) <- lex r, Just e <- [lookup s table] ]+  where table = [ (show e, e) | e <- [ minBound .. maxBound ] ]
lib/Text/Show.hs view
@@ -1,4 +1,7 @@+-- Copyright 2023,2024 Lennart Augustsson+-- See LICENSE file for full license. module Text.Show(module Text.Show) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool_Type import Data.Char_Type
lib/Text/String.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. module Text.String(module Text.String) where+import Prelude()              -- do not import Prelude import Primitives import Data.Bool import Data.Char@@ -18,17 +19,9 @@ import Data.Ratio import Data.Real import Data.Tuple+import Text.Read import Text.Show -readInt :: String -> Int-readInt cs =-  let-    rd = foldl (\ a c -> a * (10::Int) + ord c - ord '0') (0::Int)-  in if head cs == '-' then (0::Int) - rd (tail cs) else rd cs--readDouble :: String -> Double-readDouble = primDoubleRead- showListS :: forall a . (a -> String) -> [a] -> String showListS sa as = showListWith (\ a s -> sa a ++ s) as "" @@ -71,16 +64,16 @@         (ds1, cr1) | ('.':r1) <- cr1                   -> rat2 f1 r1                    | (c:r1)   <- cr1, toLower c == 'e' -> rat3 f1 r1                    | otherwise                         -> f1-          where f1 = toRational (readInteger ds1)+          where f1 = toRational (read ds1 :: Integer)      rat2 f1 s2 =       case span isDigit s2 of         (ds2, cr2) | (c:r2) <- cr2, toLower c == 'e' -> rat3 f2 r2                    | otherwise                       -> f2-          where f2 = f1 + toRational (readInteger ds2) * 10 ^^ (negate $ length ds2)+          where f2 = f1 + toRational (read ds2 :: Integer) * 10 ^^ (negate $ length ds2)      rat3 f2 ('+':s) = f2 * expo s     rat3 f2 ('-':s) = f2 / expo s     rat3 f2      s  = f2 * expo s -    expo s = 10 ^ readInteger s+    expo s = 10 ^ (read s :: Integer)
lib/Unsafe/Coerce.hs view
@@ -1,4 +1,5 @@ module Unsafe.Coerce(module Unsafe.Coerce, AnyType) where+import Prelude()              -- do not import Prelude import Primitives  unsafeCoerce :: forall a b . a -> b
src/MicroHs/Compile.hs view
@@ -8,6 +8,7 @@   Cache, emptyCache, deleteFromCache,   ) where import Prelude+import Data.List import Data.Maybe import System.IO import System.IO.MD5@@ -52,15 +53,13 @@ getCached :: Flags -> IO Cache getCached flags | not flags.readCache = return emptyCache getCached flags = do-  mhin <- openFileM mhsCacheName ReadMode-  case mhin of-    Nothing -> return emptyCache-    Just hin -> do+  mcash <- loadCached mhsCacheName+  case mcash of+    Nothing ->+      return emptyCache+    Just cash -> do       when (flags.loading || verbosityGT flags 0) $         putStrLn $ "Loading saved cache " ++ show mhsCacheName---      putStrLn "deserialize cache"-      cash <- hDeserialize hin-      hClose hin       validateCache flags cash  compile :: Flags -> IdentModule -> Cache -> IO ([LDef], Cache)@@ -106,7 +105,9 @@   mchksum <- liftIO (md5File pathfn)  -- XXX there is a small gap between reading and computing the checksum.   let chksum :: MD5CheckSum       chksum = fromMaybe undefined mchksum-  let mdl@(EModule nmn _ defs) = parseDie pTop pathfn file+  let pmdl = parseDie pTop pathfn file+      mdl@(EModule nmn _ defs) = addPreludeImport pmdl+     -- liftIO $ putStrLn $ showEModule mdl   -- liftIO $ putStrLn $ showEDefs defs   when (nm /= nmn) $@@ -129,6 +130,22 @@     (liftIO $ putStrLn $ "desugared:\n" ++ showTModule showLDefs dmdl)   let cmdl = CModule dmdl imported chksum   return (cmdl, t2-t1, t4-t3, sum ts)++addPreludeImport :: EModule -> EModule+addPreludeImport (EModule mn es ds) =+  EModule mn es ds'+  where ds' = ps' ++ nps+        (ps, nps) = partition isImportPrelude ds+        isImportPrelude (Import (ImportSpec _ i _ _)) = i == idPrelude+        isImportPrelude _ = False+        idPrelude = mkIdent "Prelude"+        ps' =+          case ps of+            [] -> [Import $ ImportSpec False idPrelude Nothing Nothing]     -- no Prelude imports, so add 'import Prelude'+            [Import (ImportSpec False _ Nothing (Just (False, [])))] -> []  -- exactly 'import Prelude()', so import nothing+            _ -> ps                                                         -- keep the given Prelude imports++-------------------------------------------  validateCache :: Flags -> Cache -> IO Cache validateCache flags cash = execStateIO (mapM_ validate (M.keys (cache cash))) cash
src/MicroHs/CompileCache.hs view
@@ -1,6 +1,7 @@ module MicroHs.CompileCache(   CModule(..), tModuleOf,   Cache, cache, working, updWorking, emptyCache, deleteFromCache, workToDone,+  saveCache, loadCached,   ) where import Prelude import MicroHs.Desugar(LDef)@@ -8,7 +9,9 @@ --import MicroHs.Ident import qualified MicroHs.IdentMap as M import MicroHs.TypeCheck(TModule)+import System.IO import System.IO.MD5(MD5CheckSum)+import Compat  data CModule = CModule     (TModule [LDef])                    -- the cached module@@ -40,3 +43,20 @@ workToDone :: CModule -> Cache -> Cache workToDone cm (Cache (mn:ws) m) = Cache ws (M.insert mn cm m) workToDone _ _ = undefined++saveCache :: FilePath -> Cache -> IO ()+saveCache fn cash = do+  hout <- openFile fn WriteMode+  hSerialize hout cash+  hClose hout++loadCached :: FilePath -> IO (Maybe Cache)+loadCached fn = do+  mhin <- openFileM fn ReadMode+  case mhin of+    Nothing ->+      return Nothing+    Just hin -> do+      cash <- hDeserialize hin+      hClose hin+      return (Just cash)
src/MicroHs/Deriving.hs view
@@ -1,4 +1,4 @@-module MicroHs.Deriving(expandField, doDeriving) where+module MicroHs.Deriving(expandField, doDeriving, mkGetName) where import Prelude --import Control.Monad import Data.Char@@ -10,54 +10,86 @@ --import Debug.Trace  expandField :: EDef -> T [EDef]-expandField def@(Data    lhs cs _) = (def:) <$> genHasFields lhs cs-expandField def@(Newtype lhs  c _) = (def:) <$> genHasFields lhs [c]+expandField def@(Data    lhs cs _) = (++ [def]) <$> genHasFields lhs cs+expandField def@(Newtype lhs  c _) = (++ [def]) <$> genHasFields lhs [c] expandField def                    = return [def]  genHasFields :: LHS -> [Constr] -> T [EDef] genHasFields lhs cs = do   let fldtys = nubBy ((==) `on` fst) [ (fld, ty) | Constr _ _ _ (Right fs) <- cs, (fld, (_, ty)) <- fs ] --      flds = map fst fldtys-  mapM (genHasField lhs cs) fldtys+  concat <$> mapM (genHasField lhs cs) fldtys -genHasField :: LHS -> [Constr] -> (Ident, EType) -> T EDef+genHasField :: LHS -> [Constr] -> (Ident, EType) -> T [EDef] genHasField (tycon, iks) cs (fld, fldty) = do   mn <- gets moduleName   let loc = getSLoc tycon       qtycon = qualIdent mn tycon       eFld = EVar fld-      undef = EVar $ mkIdentSLoc loc "undefined"  -- XXX could be nicer+      undef = EVar $ mkQIdent loc nameControlError "undefined"  -- XXX could be nicer       iHasField = mkIdentSLoc loc nameHasField-      ihasField = mkIdentSLoc loc namehasField-      hdr = eForall iks $ eApp3 (EVar iHasField)-                                  (ELit loc (LStr (unIdent fld)))-                                  (eApps (EVar qtycon) (map (EVar . idKindIdent) iks))-                                  fldty-      conEqn (Constr _ _ c (Left ts))   = eEqn [dummy, eApps (EVar c) (map (const dummy) ts)] $ undef-      conEqn (Constr _ _ c (Right fts)) = eEqn [dummy, conApp] $ if fld `elem` fs then rhs else undef+      iSetField = mkIdentSLoc loc nameSetField+      igetField = mkQIdent loc nameDataRecords namegetField+      isetField = mkQIdent loc nameDataRecords namesetField+      hdrGet = eForall iks $ eApp3 (EVar iHasField)+                                   (ELit loc (LStr (unIdent fld)))+                                   (eApps (EVar qtycon) (map (EVar . idKindIdent) iks))+                                   fldty+      hdrSet = eForall iks $ eApp3 (EVar iSetField)+                                   (ELit loc (LStr (unIdent fld)))+                                   (eApps (EVar qtycon) (map (EVar . idKindIdent) iks))+                                   fldty+      conEqnGet (Constr _ _ c (Left ts))   = eEqn [eApps (EVar c) (map (const eDummy) ts)] $ undef+      conEqnGet (Constr _ _ c (Right fts)) = eEqn [conApp] $ if fld `elem` fs then rhs else undef         where fs = map fst fts               conApp = eApps (EVar c) (map EVar fs)-              rhs = ETuple [eFld, eLam [eFld] conApp]-  pure $ Instance hdr [BFcn ihasField $ map conEqn cs]+              rhs = eFld+      conEqnSet (Constr _ _ c (Left ts))   = eEqn [eDummy, eApps (EVar c) (map (const eDummy) ts)] $ undef+      conEqnSet (Constr _ _ c (Right fts)) = eEqn [eDummy, conApp] $ if fld `elem` fs then rhs else undef+        where fs = map fst fts+              conApp = eApps (EVar c) (map EVar fs)+              rhs = eLam [eFld] conApp+      getName = mkGetName tycon fld -dummy :: Expr-dummy = EVar dummyIdent+  pure [ Sign [getName] $ eForall iks $ lhsToType (qtycon, iks) `tArrow` fldty+       , Fcn getName $ map conEqnGet cs+       , Instance hdrGet [BFcn igetField [eEqn [eDummy] $ EVar getName] ]+       , Instance hdrSet [BFcn isetField $ map conEqnSet cs]+       ] +nameHasField :: String+nameHasField = nameDataRecords ++ ".HasField"++nameSetField :: String+nameSetField = nameDataRecords ++ ".SetField"++namegetField :: String+namegetField = "getField"++namesetField :: String+namesetField = "setField"++nameDataRecords :: String+nameDataRecords = "Data.Records"++nameControlError :: String+nameControlError = "Control.Error"++mkGetName :: Ident -> Ident -> Ident+mkGetName tycon fld = qualIdent (mkIdent "get") $ qualIdent tycon fld++--------------------------------------------+ eApp2 :: Expr -> Expr -> Expr -> Expr eApp2 a b c = EApp (EApp a b) c  eApp3 :: Expr -> Expr -> Expr -> Expr -> Expr eApp3 a b c d = EApp (eApp2 a b c) d -eForall :: [IdKind] -> EType -> EType-eForall [] t = t-eForall vs t = EForall vs t--nameHasField :: String-nameHasField = "Data.Records.HasField"--namehasField :: String-namehasField = "hasField"+-- MicroHs currently has no way of using the original name,+-- so we just ignore the qualification part for now.+mkQIdent :: SLoc -> String -> String -> Ident+mkQIdent loc _qual name = mkIdentSLoc loc name  -------------------------------------------- @@ -97,16 +129,22 @@   mn <- gets moduleName   let     loc = getSLoc i-    itypeRep  = mkIdentSLoc loc "typeRep"-    imkTyConApp = mkIdentSLoc loc "mkTyConApp"-    imkTyCon = mkIdentSLoc loc "mkTyCon"+    itypeRep  = mkQIdent loc nameDataTypeable "typeRep"+    imkTyConApp = mkQIdent loc nameDataTypeable "mkTyConApp"+    imkTyCon = mkQIdent loc nameDataTypeable "mkTyCon"     hdr = EApp etyp (EVar $ qualIdent mn i)     mdl = ELit loc $ LStr $ unIdent mn     nam = ELit loc $ LStr $ unIdent i-    eqns = eEqns [dummy] $ eApp2 (EVar imkTyConApp) (eApp2 (EVar imkTyCon) mdl nam) (EVar (mkIdent "[]"))+    eqns = eEqns [eDummy] $ eApp2 (EVar imkTyConApp) (eApp2 (EVar imkTyCon) mdl nam) (EVar (mkQIdent loc nameDataListType "[]"))     inst = Instance hdr [BFcn itypeRep eqns]   return [inst] +nameDataTypeable :: String+nameDataTypeable = "Data.Tyeable"++nameDataListType :: String+nameDataListType = "Data.List_Type"+ --------------------------------------------  getConstrTyVars :: Constr -> [Ident]@@ -140,17 +178,26 @@         let (xp, xs) = mkPat c "x"             (yp, ys) = mkPat c "y"         in  eEqn [xp, yp] $ if null xs then eTrue else foldr1 eAnd $ zipWith eEq xs ys-      eqns = map mkEqn cs ++ [eEqn [dummy, dummy] eFalse]-      iEq = mkIdentSLoc loc "=="+      eqns = map mkEqn cs ++ [eEqn [eDummy, eDummy] eFalse]+      iEq = mkQIdent loc nameDataEq "=="       eEq = EApp . EApp (EVar iEq)-      eAnd = EApp . EApp (EVar $ mkIdentSLoc loc "&&")-      eTrue = EVar $ mkIdentSLoc loc "True"-      eFalse = EVar $ mkIdentSLoc loc "False"+      eAnd = EApp . EApp (EVar $ mkQIdent loc nameDataBool "&&")+      eTrue = EVar $ mkQIdent loc nameDataBoolType "True"+      eFalse = EVar $ mkQIdent loc nameDataBoolType "False"       inst = Instance hdr [BFcn iEq eqns] --  traceM $ showEDefs [inst]   return [inst]  +nameDataBoolType :: String+nameDataBoolType = nameDataBool ++ "_Type"++nameDataBool :: String+nameDataBool = "Data.Bool"++nameDataEq :: String+nameDataEq = "Data.Eq"+ --------------------------------------------  derOrd :: Deriver@@ -161,23 +208,29 @@         let (xp, xs) = mkPat c "x"             (yp, ys) = mkPat c "y"         in  [eEqn [xp, yp] $ if null xs then eEQ else foldr1 eComb $ zipWith eCompare xs ys-            ,eEqn [xp, dummy] $ eLT-            ,eEqn [dummy, yp] $ eGT]+            ,eEqn [xp, eDummy] $ eLT+            ,eEqn [eDummy, yp] $ eGT]       eqns = concatMap mkEqn cs-      iCompare = mkIdentSLoc loc "compare"+      iCompare = mkQIdent loc nameDataOrd "compare"       eCompare = EApp . EApp (EVar iCompare)       eComb = EApp . EApp (EVar $ mkIdentSLoc loc "<>")-      eEQ = EVar $ mkIdentSLoc loc "EQ"-      eLT = EVar $ mkIdentSLoc loc "LT"-      eGT = EVar $ mkIdentSLoc loc "GT"+      eEQ = EVar $ mkQIdent loc nameDataOrderingType "EQ"+      eLT = EVar $ mkQIdent loc nameDataOrderingType "LT"+      eGT = EVar $ mkQIdent loc nameDataOrderingType "GT"       inst = Instance hdr [BFcn iCompare eqns] --  traceM $ showEDefs [inst]   return [inst] +nameDataOrd :: String+nameDataOrd = "Data.Ord"++nameDataOrderingType :: String+nameDataOrderingType = "Data.Ordering_Type"+ -------------------------------------------- +-- XXX should use mkQIdent derShow :: Deriver---derShow = undefined derShow lhs cs eord = do   hdr <- mkHdr lhs cs eord   let loc = getSLoc eord
src/MicroHs/Desugar.hs view
@@ -9,6 +9,7 @@ import Prelude import Data.Char import Data.Function+import Data.Integer(_integerToIntList) import Data.List import Data.Maybe import Data.Ratio@@ -135,7 +136,10 @@     loop vs (AcyclicSCC (i, e) : sccs) =       letE i e $ loop vs sccs     loop vs (CyclicSCC [(i, e)] : sccs) =-      letRecE i e $ loop vs sccs+      case lazier (i, e) of+        (i', e')+          | i' `elem` freeVars e' -> letRecE i' e' $ loop vs sccs+          | otherwise -> letE i' e' $ loop vs sccs     loop vvs (CyclicSCC ies : sccs) =       let (v:vs) = vvs       in mutualRec v ies (loop vs sccs)@@ -174,7 +178,7 @@ encodeInteger :: Integer -> Exp encodeInteger i | toInteger (minBound::Int) <= i && i < toInteger (maxBound::Int) = --  trace ("*** small integer " ++ show i) $-  App (Var (mkIdent "Data.Integer_Type._intToInteger")) (Lit (LInt (_integerToInt i)))+  App (Var (mkIdent "Data.Integer_Type._intToInteger")) (Lit (LInt (fromInteger i)))                 | otherwise = --  trace ("*** large integer " ++ show i) $   App (Var (mkIdent "Data.Integer._intListToInteger")) (encList (map (Lit . LInt) (_integerToIntList i)))@@ -187,6 +191,8 @@ dsExpr aexpr =   case aexpr of     EVar i -> Var i+    EApp (EApp (EVar app) (EListish (LCompr e stmts))) l | app == mkIdent "Data.List_Type.++" ->+      dsExpr $ dsCompr e stmts l     EApp f a -> App (dsExpr f) (dsExpr a)     ELam qs -> dsEqns (getSLoc aexpr) qs     ELit _ (LChar c) -> Lit (LInt (ord c))@@ -198,20 +204,7 @@     ETuple es -> Lam (mkIdent "$f") $ foldl App (Var $ mkIdent "$f") $ map dsExpr es     EIf e1 e2 e3 -> encIf (dsExpr e1) (dsExpr e2) (dsExpr e3)     EListish (LList es) -> encList $ map dsExpr es-    EListish (LCompr e astmts) ->-      case astmts of-        [] -> dsExpr (EListish (LList [e]))-        stmt : stmts ->-          case stmt of-            SBind p b ->-              let-                nv = newVar (allVarsExpr aexpr)-                body = ECase (EVar nv) [(p, oneAlt $ EListish (LCompr e stmts)), (EVar dummyIdent, oneAlt $ EListish (LList []))]-              in app2 (Var (mkIdent "Data.List.concatMap")) (dsExpr (eLam [EVar nv] body)) (dsExpr b)-            SThen c ->-              dsExpr (EIf c (EListish (LCompr e stmts)) (EListish (LList [])))-            SLet ds ->-              dsExpr (ELet ds (EListish (LCompr e stmts)))+    EListish (LCompr e stmts) -> dsExpr $ dsCompr e stmts (EListish (LList []))     ECon c ->       let         ci = conIdent c@@ -225,6 +218,22 @@           Nothing -> Var (conIdent c)     _ -> impossible +dsCompr :: Expr -> [EStmt] -> Expr -> Expr+dsCompr e [] l = EApp (EApp consCon e) l+dsCompr e (SThen c : ss) l = EIf c (dsCompr e ss l) l+dsCompr e (SLet ds : ss) l = ELet ds (dsCompr e ss l)+dsCompr e xss@(SBind p g : ss) l = ELet [hdef] (EApp eh g)+  where+    hdef = BFcn h [eqn1, eqn2, eqn3]+    eqn1 = eEqn [nilCon] l+    eqn2 = eEqn [EApp (EApp consCon p) vs] (dsCompr e ss (EApp eh vs))+    eqn3 = eEqn [EApp (EApp consCon u) vs]               (EApp eh vs)+    u = EVar dummyIdent+    h = head $ newVars "$h" allVs+    eh = EVar h+    vs = EVar $ head $ newVars "$vs" allVs+    allVs = allVarsExpr (EListish (LCompr (ETuple [e,l]) xss))  -- all used identifiers+ -- Use tuple encoding to make a tuple mkTupleE :: [Exp] -> Exp mkTupleE = Lam (mkIdent "$f") . foldl App (Var (mkIdent "$f"))@@ -301,9 +310,6 @@ type Arm = ([EPat], Exp -> Exp)  -- boolean indicates that the arm has guards, i.e., it uses the default type Matrix = [Arm] ---showArm :: Arm -> String---showArm (ps, _, b) = showListS showExpr ps ++ "," ++ show b- newIdents :: Int -> M [Ident] newIdents n = do   is <- get@@ -337,8 +343,8 @@ --dsMatrix dflt is aarms | trace (show (dflt, is)) False = undefined dsMatrix dflt _ [] = return dflt dsMatrix dflt []         aarms =-  -- We can have several arms of there are guards.-  -- Combind them in order.+  -- We can have several arms if there are guards.+  -- Combine them in order.   return $ foldr (\ (_, rhs) -> rhs) dflt aarms dsMatrix dflt iis@(i:is) aarms@(aarm : aarms') =   case leftMost aarm of@@ -393,7 +399,7 @@     isPView _ _ = False     unAt ii (EAt x p : ps, rhs) = unAt i (p:ps, substAlpha x ii . rhs)     unAt _ arm = arm-  + mkCase :: Exp -> [(SPat, Exp)] -> Exp -> Exp mkCase var pes dflt =   --trace ("mkCase " ++ show pes) $@@ -439,23 +445,6 @@           [_] -> substExp i e b   -- single occurrence, substitute  XXX could be worse if under lambda           _   -> App (Lam i b) e  -- just use a beta redex -{---- Split the matrix into segments so each first column has initially patterns -- followed by variables, followed by the rest.-splitArms :: Matrix -> (Matrix, Matrix, Matrix)-splitArms am =-  let-    isConPat (p:_, _, _) = isPCon p-    isConPat _ = impossible-    (ps, nps) = span isConPat am-    loop xs [] = (xs, [])-    loop xs pps@(pg@(p:_, _, g) : rps) | not (isPVar p) = (xs, pps)-                                       | otherwise = if g then (pg:xs, rps)-                                                          else loop (pg:xs) rps-    loop _ _ = impossible-    (ds, rs)  = loop [] nps-  in (ps, reverse ds, rs)--}- -- Change from x to y inside e. substAlpha :: Ident -> Exp -> Exp -> Exp substAlpha x y e =@@ -509,22 +498,46 @@ -- we turn this into --  f x = letrec f' y = ... f' ... in f' -- thus avoiding the extra argument passing.--- XXX should generalize for an arbitrary length prefix of variables. -- This gives a small speedup with overloading. lazier :: LDef -> LDef-lazier def@(fcn, Lam x (Lam y body)) =+lazier def@(fcn, l@(Lam _ (Lam _ _))) =   let fcn' = addIdentSuffix fcn "@"       vfcn' = Var fcn'-      repl :: Exp -> State Bool Exp-      repl (Lam i e) = Lam i <$> repl e-      repl (App (Var af) (Var ax)) | af == fcn && ax == x = do-        put True-        return vfcn'-      repl (App f a) = App <$> repl f <*> repl a-      repl e@(Var _) = return e-      repl e@(Lit _) = return e-  in  case runState (repl body) False of-        (_, False) -> def-        (e', True) -> (fcn, Lam x $ letRecE fcn' (Lam y e') vfcn')-+      args :: Exp -> (Exp, [Ident])+      args (Lam x b) = -- (x:) <$> args b+        let (e, xs) = args b+        in  (e, x:xs)+      args e = (e, [])+      (body, as) = args l+      -- Find min # of args that are unchanged in a recursive call.+      -- Here 0 == no recursive calls seen (or only 0-matched calls seen).+      -- We ignore recursive calls with 0 matched args.+      minn :: Int -> Int -> Int+      minn 0 b = b+      minn a 0 = a+      minn a b = min a b+      minMatch :: [Ident] -> Exp -> Int+      minMatch _ (Lam _ e) = minMatch [] e+      minMatch vs (App f (Var v)) = minMatch (v:vs) f+      minMatch _ (App f a) = minMatch [] f `minn` minMatch [] a+      minMatch [] (Var _) = 0+      minMatch vs (Var v) | v == fcn = length (takeWhile id (zipWith (==) vs as))+      minMatch _ _ = 0+      arity = minMatch [] body+      (drops, keeps) = splitAt arity as+      -- reverse n-ary apply+      app :: [Ident] -> Exp -> Exp+      app vs e = apps e (map Var vs)+      -- Replace n recursive args with call to vfcn'+      repl :: [Ident] -> Exp -> Exp+      repl vs (Lam i e) = app vs $ Lam i $ repl [] e+      repl vs (App f (Var v)) = repl (v:vs) f+      repl vs (App f a) = app vs $ App (repl [] f) (repl [] a)+      repl [] (Var v) = Var v+      repl vs (Var v)+        | v == fcn && take arity vs == drops = app (drop arity vs) $ vfcn'+      repl vs e = app vs e+  in  if arity > 0+      then (fcn, lams drops $ letRecE fcn' (lams keeps (repl [] body)) vfcn')+      else def lazier def = def
src/MicroHs/EncodeData.hs view
@@ -147,13 +147,6 @@ conNo (ConData cks i _) = length $ takeWhile ((/= i) . fst) cks conNo _ = undefined -{--newIdent :: String -> [Exp] -> Ident-newIdent a es =-  let is = concatMap allVarsExp es-  in  head $ [ i | s <- "" : map show [1::Int ..], let { i = mkIdent (a ++ s) }, i `notElem` is ]--}- numConstr :: [(SPat, Exp)] -> Int numConstr ((SPat (ConData cs _ _) _, _):_) = length cs numConstr _ = undefined
src/MicroHs/Exp.hs view
@@ -29,15 +29,6 @@   | Lit Lit   deriving (Eq) -{--instance Eq Exp where-  (==) (Var i1)    (Var i2)    = i1 == i2-  (==) (App f1 a1) (App f2 a2) = f1 == f2 && a1 == a2-  (==) (Lam i1 e1) (Lam i2 e2) = i1 == i2 && e1 == e2-  (==) (Lit l1)    (Lit l2)    = l1 == l2-  (==) _           _           = False--}- app2 :: Exp -> Exp -> Exp -> Exp app2 f a1 a2 = App (App f a1) a2 @@ -73,7 +64,9 @@                  let                    fe = allVarsExp e                    ase = allVarsExp se-                   j = head [ v | n <- enumFrom (0::Int), let { v = mkIdent ("a" ++ show n) }, not (elem v ase), not (elem v fe) ]+                   j = head [ v | n <- enumFrom (0::Int),+                              let { v = mkIdent ("a" ++ show n) },+                              not (elem v ase), not (elem v fe), v /= si ]                  in                    --trace ("substExp " ++ show [si, i, j]) $                    Lam j (substExp si se (substExp i (Var j) e))
src/MicroHs/ExpPrint.hs view
@@ -1,29 +1,78 @@-module MicroHs.ExpPrint(toStringP, encodeString) where+module MicroHs.ExpPrint(toStringCMdl, toStringP, encodeString, combVersion) where import Prelude-import Data.Char(ord)+import Control.Monad.State.Strict+import Data.Char(ord, chr)+import qualified MicroHs.IdentMap as M+import Data.Maybe+import MicroHs.Desugar(LDef) import MicroHs.EncodeData(encList) import MicroHs.Exp-import MicroHs.Expr(Lit(..), showLit)-import MicroHs.Ident(showIdent)+import MicroHs.Expr(Lit(..), showLit, errorMessage, HasLoc(..))+import MicroHs.Ident(Ident, showIdent, mkIdent) +-- Version number of combinator file.+-- Must match version in eval.c.+combVersion :: String+combVersion = "v7.0\n"++toStringCMdl :: (Ident, [LDef]) -> String+toStringCMdl (mainName, ds) =+  let+    dMap = M.fromList ds+    -- Shake the tree bottom-up, serializing nodes as we see them.+    -- This is much faster than (say) computing the sccs and walking that.+    dfs :: Ident -> State (Int, M.Map Exp, String -> String) ()+    dfs n = do+      (i, seen, r) <- get+      case M.lookup n seen of+        Just _ -> return ()+        Nothing -> do+          -- Put placeholder for n in seen.+          put (i, M.insert n (Var n) seen, r)+          -- Walk n's children+          let e = findIdentIn n dMap+          mapM_ dfs $ freeVars e+          -- Now that n's children are done, compute its actual entry.+          (i', seen', r') <- get+          put (i'+1, M.insert n (ref i') seen', def r' (i', e))+    (_,(ndefs, defs, res)) = runState (dfs mainName) (0, M.empty, toStringP emain)+    ref i = Var $ mkIdent $ "_" ++ show i+    findIdentIn n m = fromMaybe (errorMessage (getSLoc n) $ "No definition found for: " ++ showIdent n) $+                      M.lookup n m+    findIdent n = findIdentIn n defs+    emain = findIdent mainName+    substv aexp =+      case aexp of+        Var n -> findIdent n+        App f a -> App (substv f) (substv a)+        e -> e+    def :: (String -> String) -> (Int, Exp) -> (String -> String)+    def r (i, e) =+      --(("((A :" ++ show i ++ " ") ++) . toStringP (substv e) . (") " ++) . r . (")" ++)+      ("A " ++) . toStringP (substv e) . ((":" ++ show i ++  " @\n") ++) . r . (" @" ++)+  in combVersion ++ show ndefs ++ "\n" ++ res " }"+ -- Avoid quadratic concatenation by using difference lists, -- turning concatenation into function composition. toStringP :: Exp -> (String -> String) toStringP ae =   case ae of-    Var x   -> (showIdent x ++)+    Var x   -> (showIdent x ++) . (' ' :)     Lit (LStr s) ->       -- Encode very short string directly as combinators.       if length s > 1 then-        (quoteString s ++)+        toStringP (App (Lit (LPrim "fromUTF8")) (Lit (LUStr (utf8encode s))))       else         toStringP (encodeString s)+    Lit (LUStr s) ->+      (quoteString s ++) . (' ' :)     Lit (LInteger _) -> undefined     Lit (LRat _) -> undefined-    Lit (LTick s) -> ('!':) . (quoteString s ++)-    Lit l   -> (showLit l ++)+    Lit (LTick s) -> ('!':) . (quoteString s ++) . (' ' :)+    Lit l   -> (showLit l ++) . (' ' :)     Lam _x _e -> undefined -- (("(\\" ++ showIdent x ++ " ") ++) . toStringP e . (")" ++)-    App f a -> ("(" ++) . toStringP f . (" " ++) . toStringP a . (")" ++)+    --App f a -> ("(" ++) . toStringP f . (" " ++) . toStringP a . (")" ++)+    App f a -> toStringP f . toStringP a . ("@ " ++)  quoteString :: String -> String quoteString s =@@ -38,3 +87,24 @@ encodeString :: String -> Exp encodeString = encList . map (Lit . LInt . ord) +utf8encode :: String -> String+utf8encode = concatMap utf8Char++utf8Char :: Char -> [Char]+utf8Char c | c <= chr 0x7f = [c]+           | otherwise =+  let i = ord c+  in  if i < 0x800 then+        let (i1, i2) = quotRem i 0x40+        in  [chr (i1 + 0xc0), chr (i2 + 0x80)]+      else if i < 0x10000 then+        let (i12, i3) = quotRem i   0x40+            (i1,  i2) = quotRem i12 0x40+        in  [chr (i1 + 0xe0), chr (i2 + 0x80), chr (i3 + 0x80)]+      else if i < 0x110000 then+        let (i123, i4) = quotRem i    0x40+            (i12,  i3) = quotRem i123 0x40+            (i1,   i2) = quotRem i12  0x40+        in  [chr (i1 + 0xf0), chr (i2 + 0x80), chr (i3 + 0x80), chr (i4 + 0x80)]+      else+        error "utf8Char: bad Char"
src/MicroHs/Expr.hs view
@@ -29,6 +29,7 @@   tupleConstr, getTupleConstr,   mkTupleSel,   eApps,+  lhsToType,   subst,   allVarsExpr, allVarsBind,   setSLocExpr,@@ -36,6 +37,8 @@   Assoc(..), Fixity,   getBindsVars,   HasLoc(..),+  eForall,+  eDummy,   impossible, impossibleShow,   ) where import Prelude hiding ((<>))@@ -50,20 +53,21 @@ ----------------------  data EModule = EModule IdentModule [ExportItem] [EDef]+--DEBUG  deriving (Show)  data ExportItem   = ExpModule IdentModule   | ExpTypeCon Ident   | ExpType Ident   | ExpValue Ident---  deriving (Show)+--DEBUG  deriving (Show)  data EDef   = Data LHS [Constr] Deriving   | Newtype LHS Constr Deriving   | Type LHS EType   | Fcn Ident [Eqn]-  | Sign Ident EType+  | Sign [Ident] EType   | KindSign Ident EKind   | Import ImportSpec   | ForImp String Ident EType@@ -71,16 +75,16 @@   | Class [EConstraint] LHS [FunDep] [EBind]  -- XXX will probable need initial forall with FD   | Instance EConstraint [EBind]  -- no deriving yet   | Default [EType]---  deriving (Show)+--DEBUG  deriving (Show)  data ImportSpec = ImportSpec Bool Ident (Maybe Ident) (Maybe (Bool, [ImportItem]))  -- first Bool indicates 'qualified', second 'hiding'---  deriving (Show)+--DEBUG  deriving (Show)  data ImportItem   = ImpTypeCon Ident   | ImpType Ident   | ImpValue Ident---  deriving (Show)+--DEBUG  deriving (Show)  type Deriving = [EConstraint] @@ -111,12 +115,13 @@   -- Constructors after type checking   | ECon Con   | EForall [IdKind] Expr -- only in types---  deriving (Show)+--DEBUG  deriving (Show)  data EField   = EField [Ident] Expr     -- a.b = e   | EFieldPun [Ident]       -- a.b   | EFieldWild              -- ..+--DEBUG  deriving (Show)  unEField :: EField -> ([Ident], Expr) unEField (EField is e) = (is, e)@@ -138,7 +143,7 @@ data Con   = ConData ConTyInfo Ident [FieldName]   | ConNew Ident [FieldName]---  deriving(Show)+--DEBUG  deriving(Show)  data Listish   = LList [Expr]@@ -147,7 +152,7 @@   | LFromTo Expr Expr   | LFromThen Expr Expr   | LFromThenTo Expr Expr Expr---  deriving(Show)+--DEBUG  deriving(Show)  conIdent :: HasCallStack =>             Con -> Ident@@ -174,39 +179,27 @@   | LRat Rational   | LChar Char   | LStr String+  | LUStr String            -- UTF-8 encoded string   | LPrim String   | LForImp String   | LTick String---  deriving (Show)+--DEBUG  deriving (Show)   deriving (Eq) -{--instance Eq Lit where-  (==) (LInt x)     (LInt  y) = x == y-  (==) (LInteger x) (LInteger  y) = x == y-  (==) (LDouble x)  (LDouble y) = x == y-  (==) (LRat x)     (LRat y) = x == y-  (==) (LChar x)    (LChar y) = x == y-  (==) (LStr  x)    (LStr  y) = x == y-  (==) (LPrim x)    (LPrim y) = x == y-  (==) (LForImp x)  (LForImp y) = x == y-  (==) (LTick x)    (LTick y) = x == y-  (==) _            _         = False--}- type ECaseArm = (EPat, EAlts)  data EStmt = SBind EPat Expr | SThen Expr | SLet [EBind]---  deriving (Show)+--DEBUG  deriving (Show)  data EBind = BFcn Ident [Eqn] | BPat EPat Expr | BSign Ident EType---  deriving (Show)+--DEBUG  deriving (Show)  -- A single equation for a function data Eqn = Eqn [EPat] EAlts+--DEBUG  deriving (Show)  data EAlts = EAlts [EAlt] [EBind]---  deriving (Show)+--DEBUG  deriving (Show)  type EAlt = ([EStmt], Expr) @@ -236,6 +229,7 @@     EViewPat _ p -> patVars p     ECon _ -> []     EUpdate _ fs -> concatMap field fs+    ENegApp _ -> []     _ -> error $ "patVars " ++ showExpr apat   where add i is | isConIdent i || isDummyIdent i = is                  | otherwise = i : is@@ -249,7 +243,7 @@   [IdKind] [EConstraint]          -- existentials: forall vs . ctx =>   Ident                           -- constructor name   (Either [SType] [ConstrField])  -- types or named fields---  deriving(Show)+--DEBUG  deriving(Show)  type ConstrField = (Ident, SType)              -- record label and type type SType = (Bool, EType)                     -- the Bool indicates strict@@ -262,7 +256,7 @@ type EConstraint = EType  data IdKind = IdKind Ident EKind-  --deriving (Show, Eq)+--DEBUG  deriving (Show)  instance Show IdKind where   show (IdKind i k) = "(" ++ show i ++ "::" ++ show k ++ ")"@@ -300,6 +294,9 @@ eApps :: Expr -> [Expr] -> Expr eApps = foldl EApp +lhsToType :: LHS -> EType+lhsToType (i, iks) = eApps (EVar i) $ map (EVar . idKindIdent) iks+ ---------------------------------  -- Get the location of a syntactic element@@ -337,7 +334,7 @@   getSLoc (EForall iks _) = getSLoc iks  instance forall a . HasLoc a => HasLoc [a] where-  getSLoc [] = error "getSLoc []"+  getSLoc [] = noSLoc  -- XXX shouldn't happen   getSLoc (a:_) = getSLoc a  instance HasLoc IdKind where@@ -379,17 +376,9 @@ ---------------------------------  data Assoc = AssocLeft | AssocRight | AssocNone---  deriving (Show)+--DEBUG  deriving (Show)   deriving (Eq) -{--instance Eq Assoc where-  AssocLeft  == AssocLeft  = True-  AssocRight == AssocRight = True-  AssocNone  == AssocNone  = True-  _          == _          = False--}- type Fixity = (Assoc, Int)  ---------------------------------@@ -570,7 +559,7 @@     Newtype lhs c ds -> text "newtype" <+> ppLHS lhs <+> text "=" <+> ppConstr c <+> ppDeriving ds     Type lhs t -> text "type" <+> ppLHS lhs <+> text "=" <+> ppEType t     Fcn i eqns -> ppEqns (ppIdent i) (text "=") eqns-    Sign i t -> ppIdent i <+> text "::" <+> ppEType t+    Sign is t -> hsep (punctuate (text ",") (map ppIdent is)) <+> text "::" <+> ppEType t     KindSign i t -> text "type" <+> ppIdent i <+> text "::" <+> ppEKind t     Import (ImportSpec q m mm mis) -> text "import" <+> (if q then text "qualified" else empty) <+> ppIdent m <> text (maybe "" ((" as " ++) . unIdent) mm) <>       case mis of@@ -650,7 +639,6 @@     ECase e as -> text "case" <+> ppExpr e <+> text "of" $$ nest 2 (vcat (map ppCaseArm as))     ELet bs e -> text "let" $$ nest 2 (vcat (map ppEBind bs)) $$ text "in" <+> ppExpr e     ETuple es -> parens $ hsep $ punctuate (text ",") (map ppExpr es)-    EListish (LList es) -> ppList ppExpr es     EDo mn ss -> maybe (text "do") (\ n -> ppIdent n <> text ".do") mn $$ nest 2 (vcat (map ppEStmt ss))     ESectL e i -> parens $ ppExpr e <+> ppIdent i     ESectR i e -> parens $ ppIdent i <+> ppExpr e@@ -686,7 +674,12 @@ ppForall iks = text "forall" <+> hsep (map ppIdKind iks) <+> text "."  ppListish :: Listish -> Doc-ppListish _ = text "<<Listish>>"+ppListish (LList es) = ppList ppExpr es+ppListish (LCompr e ss) = brackets $ ppExpr e <+> text "|" <+> hsep (punctuate (text ",") (map ppEStmt ss))+ppListish (LFrom e1) = brackets $ ppExpr e1 <> text ".."+ppListish (LFromTo e1 e2) = brackets $ ppExpr e1 <> text ".." <> ppExpr e2+ppListish (LFromThen e1 e2) = brackets $ ppExpr e1 <> text "," <> ppExpr e2 <> text ".."+ppListish (LFromThenTo e1 e2 e3) = brackets $ ppExpr e1 <> text "," <> ppExpr e2 <> text ".." <> ppExpr e3  ppCon :: Con -> Doc ppCon (ConData _ s _) = ppIdent s@@ -708,6 +701,7 @@     LRat r     -> '%' : show r     LChar c    -> show c     LStr s     -> show s+    LUStr s    -> show s     LPrim s    -> s     LForImp s  -> '^' : s     LTick s    -> '!' : s@@ -752,6 +746,13 @@  getBindsVars :: [EBind] -> [Ident] getBindsVars = concatMap getBindVars++eForall :: [IdKind] -> EType -> EType+eForall [] t = t+eForall vs t = EForall vs t++eDummy :: Expr+eDummy = EVar dummyIdent  impossible :: forall a .               HasCallStack =>
src/MicroHs/Ident.hs view
@@ -107,7 +107,8 @@   in isUpper c || c == ':' || c == ',' || i == "[]"  || i == "()"  isOperChar :: Char -> Bool-isOperChar c = elem c "@\\=+-:<>.!#$%^&*/|~?"+isOperChar c = elem c "@\\=+-:<>.!#$%^&*/|~?\x2237\x21d2\x2192\x2190\x2200"+--                                             ::    =>    ->    <- forall  isIdentChar :: Char -> Bool isIdentChar c = isLower_ c || isUpper c || isDigit c || c == '\''@@ -125,6 +126,7 @@ showSLoc :: SLoc -> String showSLoc (SLoc fn l c) =   if null fn then "no location" else-  show fn ++ -    if l == 0 && c == 0 then ""-    else ": line " ++ show l ++ ", col " ++ show c+  show fn ++ ": " +++    if l == 0  then "no location" else+    if l == -1 then "end-of-file" else+    "line " ++ show l ++ ", col " ++ show c
src/MicroHs/Instances.hs view
@@ -1,4 +1,12 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license.-module MicroHs.Instances() where+module MicroHs.Instances(getMhsDir, compiledWithGHC) where -- For GHC compatibility+import Prelude+import System.Environment++getMhsDir :: IO (Maybe FilePath)+getMhsDir = lookupEnv "MHSDIR"++compiledWithGHC :: Bool+compiledWithGHC = False
src/MicroHs/Interactive.hs view
@@ -12,6 +12,7 @@ import Unsafe.Coerce import System.Console.SimpleReadline import Compat+import MicroHs.Instances(compiledWithGHC)  type IState = (String, Flags, Cache) @@ -29,12 +30,14 @@  preamble :: String preamble = "module " ++ interactiveName ++ "(module " ++ interactiveName ++-           ") where\nimport Prelude\ndefault (Integer, Double)\n"+           ") where\nimport Prelude\nimport System.IO.PrintOrRun\ndefault (Integer, Double)\n"  start :: I () start = do   reload   liftIO $ putStrLn "Type ':quit' to quit, ':help' for help"+  when compiledWithGHC $+    liftIO $ putStrLn "WARNING: Compiled with GHC, so limited functionality."   repl  repl :: I ()@@ -116,8 +119,11 @@ mkIt l = itName ++ " :: IO ()\n" ++ itName ++ " = printOrRun (" ++ l ++ ")\n"  err :: Exn -> IO ()-err (Exn s) = putStrLn $ "Error: " ++ s+err e = err' $ exnToString e +err' :: String -> IO ()+err' s = putStrLn $ "Error: " ++ s+ oneline :: String -> I () oneline line = do   (ls, _, _) <- get@@ -142,7 +148,7 @@           case exprTest of             Right m -> evalExpr m             Left  e -> liftIO $ err e-        Left  e -> liftIO $ err (Exn e)+        Left  e -> liftIO $ err' e  tryCompile :: String -> I (Either Exn [LDef]) tryCompile file = do
src/MicroHs/Lex.hs view
@@ -1,25 +1,31 @@ module MicroHs.Lex(-  lexTop,   Token(..), showToken,-  tokensLoc) where+  tokensLoc,+  LexState, lexTopLS,+  popLayout,+  ) where import Prelude hiding(lex) import Data.Char import Data.List-import Compat import MicroHs.Ident+import Text.ParserComb(TokenMachine(..))+import Compat  data Token-  = TIdent  Loc [String] String-  | TString Loc String-  | TChar   Loc Char-  | TInt    Loc Integer-  | TRat    Loc Rational-  | TSpec   Loc Char-  | TError  Loc String-  | TBrace  Loc-  | TIndent Loc-  | TSelect Loc String---  deriving (Show)+  = TIdent  Loc [String] String  -- identifier+  | TString Loc String           -- String literal+  | TChar   Loc Char             -- Char literal+  | TInt    Loc Integer          -- Integer literal+  | TRat    Loc Rational         -- Rational literal (i.e., decimal number)+  | TSpec   Loc Char             -- one of ()[]{},`;+                                 -- for synthetic {} we use <>+  | TError  Loc String           -- lexical error+  | TBrace  Loc                  -- {n} in the Haskell report+  | TIndent Loc                  -- <n> in the Haskell report+  | TSelect Loc String           -- special '.foo' token+  | TEnd+  | TRaw [Token]+  deriving (Show)  showToken :: Token -> String showToken (TIdent _ ss s) = intercalate "." (ss ++ [s])@@ -27,11 +33,15 @@ showToken (TChar _ c) = show c showToken (TInt _ i) = show i showToken (TRat _ d) = show d-showToken (TSpec _ c) = [c]-showToken (TError _ s) = "ERROR " ++ s+showToken (TSpec _ c) | c == '<' = "{ layout"+                      | c == '>' = "} layout"+                      | otherwise = [c]+showToken (TError _ s) = s showToken (TBrace _) = "TBrace" showToken (TIndent _) = "TIndent" showToken (TSelect _ s) = "." ++ s+showToken TEnd = "EOF"+showToken (TRaw _) = "TRaw"  incrLine :: Loc -> Loc incrLine (l, _) = (l+1, 1)@@ -45,6 +55,9 @@ mkLoc :: Line -> Col -> Loc mkLoc l c = (l, c) +mkLocEOF :: Loc+mkLocEOF = (-1,0)+ getCol :: Loc -> Col getCol (_, c) = c @@ -73,10 +86,6 @@  --------- -lexTop :: String -> [Token]-lexTop = layout [] .-         lex (mkLoc 1 1)- -- | Take a location and string and produce a list of tokens lex :: Loc -> String -> [Token] lex loc (' ':cs)  = lex (addCol loc 1) cs@@ -122,7 +131,7 @@ number loc cs =   case span isDigit cs of     (ds, rs) | null rs || not (head rs == '.') || (take 2 rs) == ".." ->-               let i = readInteger ds+               let i = read ds                in  TInt loc i : lex (addCol loc $ length ds) rs              | otherwise ->                case span isDigit (tail rs) of@@ -164,19 +173,33 @@ takeChars :: Loc -> (String -> Token) -> Char -> Int -> String -> String -> (Token, Int, String) takeChars loc _ c n _ [] = (TError loc ("Unmatched " ++ [c]), n, []) takeChars loc fn c n str ('\\':cs) =-  case decodeChar (n+1) cs of-    (d, m, rs) -> takeChars loc fn c m (d:str) rs+  case cs of+    '&':rs -> takeChars loc fn c (n+2) str rs+    _ ->+      case decodeChar (n+1) cs of+        (d, m, rs) -> takeChars loc fn c m (d:str) rs takeChars   _ fn c n str (d:cs) | c == d = (fn (reverse str), n, cs) takeChars loc fn c n str (d:cs) = takeChars loc fn c (n+1) (d:str) cs  decodeChar :: Int -> String -> (Char, Int, String) decodeChar n ('n':cs) = ('\n', n+1, cs)+decodeChar n ('a':cs) = ('\a', n+1, cs)+decodeChar n ('b':cs) = ('\b', n+1, cs)+decodeChar n ('f':cs) = ('\f', n+1, cs) decodeChar n ('r':cs) = ('\r', n+1, cs) decodeChar n ('t':cs) = ('\t', n+1, cs)-decodeChar n ('b':cs) = ('\b', n+1, cs)+decodeChar n ('v':cs) = ('\v', n+1, cs)+decodeChar n ('x':cs) = conv 16 (n+1) 0 cs+decodeChar n ('o':cs) = conv 8 (n+1) 0 cs+decodeChar n ('^':c:cs) | '@' <= c && c <= '_' = (chr (ord c - ord '@'), n+2, cs)+decodeChar n (cs@(c:_)) | isDigit c = conv 10 n 0 cs decodeChar n (c  :cs) = (c,    n+1, cs) decodeChar n []       = ('X',  n,   []) +conv :: Int -> Int -> Int -> String -> (Char, Int, String)+conv b k r (c:ds) | isHexDigit c, let { n = digitToInt c }, n < b = conv b (k+1) (r * b + n) ds+conv _ k r ds = (chr r, k, ds)+ isSpec :: Char -> Bool isSpec c = elem c "()[],{}`;" @@ -200,41 +223,76 @@ tIdent loc qs kw ats | elem kw ["let", "where", "do", "of"]                                  = ti : tBrace ats                      | otherwise = ti : ats-  where {-    ti = TIdent loc qs kw;+  where+    ti = TIdent loc qs kw -    tBrace ts@(TSpec _ '{' : _) = ts;-    tBrace ts@(TIndent _ : TSpec _ '{' : _) = ts;-    tBrace (TIndent _ : ts) = TBrace (tokensLoc ts) : ts;+    tBrace ts@(TSpec _ '{' : _) = ts+    tBrace ts@(TIndent _ : TSpec _ '{' : _) = ts+    tBrace (TIndent _ : ts) = TBrace (tokensLoc ts) : ts     tBrace ts = TBrace (tokensLoc ts) : ts-    }  tokensLoc :: [Token] -> Loc tokensLoc (TIdent  loc _ _:_) = loc tokensLoc (TString loc _  :_) = loc tokensLoc (TChar   loc _  :_) = loc tokensLoc (TInt    loc _  :_) = loc-tokensLoc (TRat    loc _ : _) = loc+tokensLoc (TRat    loc _  :_) = loc tokensLoc (TSpec   loc _  :_) = loc tokensLoc (TError  loc _  :_) = loc tokensLoc (TBrace  loc    :_) = loc tokensLoc (TIndent loc    :_) = loc tokensLoc (TSelect loc _  :_) = loc-tokensLoc []                  = mkLoc 0 1---- | This is the magical layout resolver, straight from the Haskell report.-layout :: [Int] -> [Token] -> [Token]-layout mms@(m : ms) tts@(TIndent x       : ts) | n == m = TSpec (tokensLoc ts) ';' : layout    mms  ts-                                               | n <  m = TSpec (tokensLoc ts) '}' : layout     ms tts where {n = getCol x}-layout          ms      (TIndent _       : ts)          =                            layout     ms  ts-layout mms@(m :  _)     (TBrace x        : ts) | n > m  = TSpec (tokensLoc ts) '{' : layout (n:mms) ts where {n = getCol x}-layout          []      (TBrace x        : ts) | n > 0  = TSpec (tokensLoc ts) '{' : layout     [n] ts where {n = getCol x}-layout     (0 : ms)     (t@(TSpec _ '}') : ts)          =                        t : layout     ms  ts -layout           _      (  (TSpec l '}') :  _)          = TError l "layout error }": []-layout          ms      (t@(TSpec _ '{') : ts)          =                        t : layout  (0:ms) ts-layout          ms      (t               : ts)          =                        t : layout     ms  ts-layout     (_ : ms)     []                              = TSpec (mkLoc 0 0) '}'    : layout     ms  []-layout          []      []                              =                            []+tokensLoc _                   = mkLocEOF  readHex :: String -> Integer readHex = foldl (\ r c -> r * 16 + toInteger (digitToInt c)) 0++-- | This is the magical layout resolver, straight from the Haskell report.+-- https://www.haskell.org/onlinereport/haskell2010/haskellch10.html#x17-17800010.3+-- The first argument to layoutLS is the input token stream.+-- The second argument is a stack of "layout contexts" (indentations) where a synthetic '{' has been inserted.+-- In the report this is a list-to-list function, but it's encoded differently here.+-- The function returns a the next token, and the state of the layout conversion.+-- The reason is that to implement the Note 5 rule we need to manipulate the state,+-- namely to pop the context stack.  And this has to be initiated from the parser.+-- There are 3 commands that the state can be given:+--   Next  generate the next token (and new state)+--   Pop   pop the context stack+--   Raw   return the rest of the tokens, unprocessed++newtype LexState = LS (Cmd -> (Token, LexState))++data Cmd = Next | Raw | Pop++layoutLS ::                [Token] ->    [Int] -> Cmd      -> (Token,                    LexState)+layoutLS                        ts           ms  Raw        = (TRaw ts,                  LS $ layoutLS  ts     ms )+layoutLS                        ts          mms  Pop        =                                                    +                                                   case (mms, ts) of                                              +                                                     (m:ms,_:_) | m/=0 -> (       TEnd,  LS $ layoutLS  ts     ms )+                                                     _ ->     (TError l "syntax error",  LS $ layoutLS  []     [] ) where l = tokensLoc ts+layoutLS tts@(TIndent x       : ts) mms@(m : ms) _ | n == m = (TSpec (tokensLoc ts) ';', LS $ layoutLS  ts    mms )+                                                   | n <  m = (TSpec (tokensLoc ts) '>', LS $ layoutLS tts     ms ) where {n = getCol x}+layoutLS     (TIndent _       : ts)          ms  _          =                                 layoutLS  ts     ms  Next+layoutLS     (TBrace x        : ts) mms@(m :  _) _ | n > m  = (TSpec (tokensLoc ts) '<', LS $ layoutLS  ts (n:mms)) where {n = getCol x}+layoutLS     (TBrace x        : ts)          []  _ | n > 0  = (TSpec (tokensLoc ts) '<', LS $ layoutLS  ts     [n]) where {n = getCol x}+layoutLS     (TBrace x        : ts)          ms  _          = (TSpec (tokensLoc ts) '<', LS $ layoutLS  (TSpec (tokensLoc ts) '>' : TIndent x : ts) ms)+layoutLS     (t@(TSpec _ '}') : ts)     (0 : ms) _          = (                       t, LS $ layoutLS  ts     ms )+layoutLS     (  (TSpec l '}') :  _)           _  _          = (TError l "layout error }",LS $ layoutLS  []     [] )+layoutLS     (t@(TSpec _ '{') : ts)          ms  _          = (                       t, LS $ layoutLS  ts  (0:ms))+layoutLS     (t               : ts)          ms  _          = (                       t, LS $ layoutLS  ts     ms )+layoutLS     []                         (_ : ms) _          = (TSpec mkLocEOF '>'      , LS $ layoutLS  []     ms )+layoutLS     []                              []  _          = (TEnd                    , LS $ layoutLS  []     [] )++instance TokenMachine LexState Token where+  tmNextToken (LS f) = f Next+  tmRawTokens (LS f) =+    case f Raw of+      (TRaw ts, _) -> ts+      _            -> undefined++-- Used for Note 5.+popLayout :: LexState -> LexState+popLayout (LS f) = snd (f Pop)++lexTopLS :: String -> LexState+lexTopLS s = LS $ layoutLS (lex (mkLoc 1 1) s) []
src/MicroHs/Main.hs view
@@ -1,6 +1,6 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license.-{-# OPTIONS_GHC -Wno-unused-do-bind #-}+{-# OPTIONS_GHC -Wno-unused-do-bind -Wno-unused-imports #-} module MicroHs.Main(main) where import Prelude import Data.List@@ -9,11 +9,10 @@ import Data.Maybe import System.Environment import MicroHs.Compile-import MicroHs.Exp+import MicroHs.CompileCache import MicroHs.ExpPrint import MicroHs.Flags import MicroHs.Ident-import qualified MicroHs.IdentMap as M import MicroHs.Translate import MicroHs.Interactive import MicroHs.MakeCArray@@ -21,20 +20,15 @@ import System.IO import System.Process import Compat-import MicroHs.Instances() -- for GHC---- Version number of combinator file.--- Must match version in eval.c.-combVersion :: String-combVersion = "v6.1\n"+import MicroHs.Instances(getMhsDir) -- for GHC  mhsVersion :: String-mhsVersion = "0.9.3.0"+mhsVersion = "0.9.5.0"  main :: IO () main = do   aargs <- getArgs-  mdir <- lookupEnv "MHSDIR"+  mdir <- getMhsDir   let dir = fromMaybe "." mdir   let     args = takeWhile (/= "--") aargs@@ -64,10 +58,8 @@           (ds, cash') <- compileCacheTop flags mn cash           when (verbosityGT flags 0) $             putStrLn $ "Saving cache " ++ show mhsCacheName-          () <- seq (rnf cash') (return ())-          hout <- openFile mhsCacheName WriteMode-          hSerialize hout cash'-          hClose hout+          () <- seq (rnfNoErr cash) (return ())+          saveCache mhsCacheName cash'           return ds         else do           cash <- getCached flags@@ -77,21 +69,8 @@   let     mainName = qualIdent mn (mkIdent "main")     cmdl = (mainName, ds)-    ref i = Var $ mkIdent $ "_" ++ show i-    defs = M.fromList [ (n, ref i) | ((n, _), i) <- zip ds (enumFrom (0::Int)) ]-    findIdent n = fromMaybe (error $ "main: findIdent: " ++ showIdent n) $-                  M.lookup n defs-    emain = findIdent mainName-    substv aexp =-      case aexp of-        Var n -> findIdent n-        App f a -> App (substv f) (substv a)-        e -> e-    def :: ((Ident, Exp), Int) -> (String -> String) -> (String -> String)-    def ((_, e), i) r =-      (("((A :" ++ show i ++ " ") ++) . toStringP (substv e) . (") " ++) . r . (")" ++)-    res = foldr def (toStringP emain) (zip ds (enumFrom 0)) ""-    numDefs = M.size defs+    outData = toStringCMdl cmdl+    numDefs = length ds   when (verbosityGT flags 0) $     putStrLn $ "top level defns: " ++ show numDefs   when (verbosityGT flags 1) $@@ -104,7 +83,6 @@     prg --    putStrLn "done"    else do-    let outData = combVersion ++ show numDefs ++ "\n" ++ res     seq (length outData) (return ())     t2 <- getTimeMilli     when (verbosityGT flags 0) $
src/MicroHs/Parse.hs view
@@ -9,10 +9,9 @@ import MicroHs.Lex import MicroHs.Expr import MicroHs.Ident-import Compat --import Debug.Trace -type P a = Prsr FilePath Token a+type P a = Prsr FilePath LexState Token a  getFileName :: P FilePath getFileName = get@@ -27,9 +26,9 @@ parse :: forall a . (Show a) =>          P a -> FilePath -> String -> Either String a parse p fn file =-  let { ts = lexTop file } in+  let { ts = lexTopLS file } in   case runPrsr fn p ts of-    Left lf -> Left $ formatFailed fn ts lf+    Left lf -> Left $ formatFailed fn (tmRawTokens ts) lf     Right [(a, _)] -> Right a     Right as -> Left $ "Ambiguous:"                        ++ unlines (map (show . fst) as)@@ -39,6 +38,13 @@   t <- nextToken   pure (tokensLoc [t]) +eof :: P ()+eof = do+  t <- nextToken+  case t of+    TEnd -> pure ()+    _    -> fail "eof"+ pTop :: P EModule pTop = pModule <* eof @@ -50,6 +56,7 @@                       (pSpec '(' *> esepEndBy pExportItem (pSpec ',') <* pSpec ')') <*>                       (pKeyword "where" *> pBlock pDef) +-- Possibly qualified alphanumeric identifier pQIdent :: P Ident pQIdent = do   fn <- getFileName@@ -58,6 +65,7 @@     is _ = Nothing   satisfyM "QIdent" is +-- Upper case, unqualified, alphanumeric identifier pUIdentA :: P Ident pUIdentA = do   fn <- getFileName@@ -66,14 +74,17 @@     is _ = Nothing   satisfyM "UIdent" is +-- Upper case, unqualified, identifier pUIdent :: P Ident pUIdent =       pUIdentA   <|< pUIdentSpecial +-- Upper case, unqualified, identifier or symbol pUIdentSym :: P Ident pUIdentSym = pUIdent <|< pParens pUSymOper +-- Special "identifiers": () [] (,) ... pUIdentSpecial :: P Ident pUIdentSpecial = do   fn <- getFileName@@ -85,6 +96,7 @@     <|< (mk "()" <$ (pSpec '(' *> pSpec ')'))  -- Allow () as a constructor name     <|< (mk "[]" <$ (pSpec '[' *> pSpec ']'))  -- Allow [] as a constructor name +-- Upper case, possibly qualified, alphanumeric identifier pUQIdentA :: P Ident pUQIdentA = do   fn <- getFileName@@ -93,11 +105,13 @@     is _ = Nothing   satisfyM "UQIdent" is +-- Upper case, possibly qualified, identifier pUQIdent :: P Ident pUQIdent =       pUQIdentA   <|< pUIdentSpecial +-- Lower case, unqualified identifier pLIdent :: P Ident pLIdent = do   fn <- getFileName@@ -106,6 +120,7 @@     is _ = Nothing   satisfyM "LIdent" is +-- Lower case, possibly qualified identifier pLQIdent :: P Ident pLQIdent = do   fn <- getFileName@@ -189,6 +204,7 @@   fn <- getFileName   let     is (TIdent loc qs s@"->") = Just (qualName fn loc qs s)+    is (TIdent loc qs s@"\x2192") = Just (qualName fn loc qs s)     is _ = Nothing   satisfyM "->" is @@ -199,7 +215,8 @@   pure s  reservedOps :: [String]-reservedOps = ["=", "|", "::", "<-", "@", "..", "->"]+reservedOps = ["=", "|", "::", "<-", "@", "..", "->",+               "\x2237", "\x2192"] -- :: and ->  pUQIdentSym :: P Ident pUQIdentSym = pUQIdent <|< pParens pUQSymOper@@ -241,7 +258,7 @@ pExportItem :: P ExportItem pExportItem =       ExpModule <$> (pKeyword "module" *> pUQIdent)-  <|< ExpTypeCon <$> (pUQIdentSym <* pSpec '(' <* pSymbol ".." <* pSpec ')')+  <|< ExpTypeCon <$> (pUQIdentSym <* pSpec '(' <* pConList <* pSpec ')')   <|< ExpType <$> pUQIdentSym   <|< ExpValue <$> pLQIdentSym @@ -252,13 +269,29 @@     is _ = False  pBlock :: forall a . P a -> P [a]-pBlock p = do-  pSpec '{'-  as <- esepBy p (pSpec ';')-  eoptional (pSpec ';')-  pSpec '}'-  pure as+pBlock p =+  do+    pSpec '{'+    as <- body+    pSpec '}'+    pure as+ <|>+  do+    pSpec '<'+    as <- body+    -- If we are at a '>' token (i.e., synthetic '}') then+    -- all is well, if not then there is a parse error and we try+    -- recovering by popping they layout stack.+    -- This implements the Note 5 rule from Section 10.3 in+    -- the Haskell report.+    t <- nextToken+    case t of+      TSpec _ '>' -> pSpec '>'+      _           -> mapTokenState popLayout+    pure as+  where body = esepBy p (esome (pSpec ';')) <* eoptional (pSpec ';') + pDef :: P EDef pDef =       Data        <$> (pKeyword "data"    *> pLHS) <*> ((pSymbol "=" *> esepBy1 pConstr (pSymbol "|"))@@ -266,7 +299,7 @@   <|< Newtype     <$> (pKeyword "newtype" *> pLHS) <*> (pSymbol "=" *> (Constr [] [] <$> pUIdentSym <*> pField)) <*> pDeriving   <|< Type        <$> (pKeyword "type"    *> pLHS) <*> (pSymbol "=" *> pType)   <|< uncurry Fcn <$> pEqns-  <|< Sign        <$> (pLIdentSym <* pSymbol "::") <*> pType+  <|< Sign        <$> ((esepBy1 pLIdentSym (pSpec ',')) <* dcolon) <*> pType   <|< Import      <$> (pKeyword "import"  *> pImportSpec)   <|< ForImp      <$> (pKeyword "foreign" *> pKeyword "import" *> pKeyword "ccall" *> pString) <*> pLIdent <*> (pSymbol "::" *> pType)   <|< Infix       <$> ((,) <$> pAssoc <*> pPrec) <*> esepBy1 pTypeOper (pSpec ',')@@ -276,16 +309,17 @@   <|< KindSign    <$> (pKeyword "type"    *> pTypeIdentSym) <*> (pSymbol "::" *> pKind)   where     pAssoc = (AssocLeft <$ pKeyword "infixl") <|< (AssocRight <$ pKeyword "infixr") <|< (AssocNone <$ pKeyword "infix")-    dig (TInt _ ii) | 0 <= i && i <= 9 = Just i  where i = _integerToInt ii+    dig (TInt _ ii) | 0 <= i && i <= 9 = Just i  where i = fromInteger ii     dig _ = Nothing     pPrec = satisfyM "digit" dig      pFunDeps = (pSymbol "|" *> esepBy1 pFunDep (pSpec ',')) <|< pure []-    pFunDep = (,) <$> esome pLIdent <*> (pSymbol "->" *> esome pLIdent)+    pFunDep = (,) <$> esome pLIdent <*> (pSRArrow *> esome pLIdent)     pField = do       fs <- pFields       guard $ either length length fs == 1       pure fs+    dcolon = pSymbol "::" <|< pSymbol "\x2237"  pDeriving :: P [EConstraint] pDeriving = pKeyword "deriving" *> pDer <|< pure []@@ -293,10 +327,19 @@                <|< ((:[]) <$> pType)  pContext :: P [EConstraint]-pContext = (pCtx <* pSymbol "=>") <|< pure []+pContext = (pCtx <* pDRArrow) <|< pure []   where     pCtx = pParens (emany pType) <|< ((:[]) <$> pTypeApp) +pDRArrow :: P ()+pDRArrow = pSymbol "=>" <|< pSymbol "\x21d2"++pSRArrow :: P ()+pSRArrow = pSymbol "->" <|< pSymbol "\x2192"++pSLArrow :: P ()+pSLArrow = pSymbol "<-" <|< pSymbol "\x2190"+ pConstr :: P Constr pConstr = (Constr <$> pForall <*> pContext <*> pUIdentSym <*> pFields)       <|< ((\ vs ct t1 c t2 -> Constr vs ct c (Left [t1, t2])) <$>@@ -304,7 +347,8 @@  pFields :: P (Either [SType] [(Ident, SType)]) pFields = Left  <$> emany pSAType-      <|> Right <$> (pSpec '{' *> esepBy ((,) <$> (pLIdentSym <* pSymbol "::") <*> pSType) (pSpec ',') <* pSpec '}')+      <|> Right <$> (pSpec '{' *> (concatMap flat <$> esepBy ((,) <$> (esepBy1 pLIdentSym (pSpec ',') <* pSymbol "::") <*> pSType) (pSpec ',') <* pSpec '}'))+  where flat (is, t) = map (,t) is  pSAType :: P (Bool, EType) pSAType = (,) <$> pStrict <*> pAType@@ -326,10 +370,13 @@  pImportItem :: P ImportItem pImportItem =-      ImpTypeCon <$> (pUQIdentSym <* pSpec '(' <* pSymbol ".." <* pSpec ')')+      ImpTypeCon <$> (pUQIdentSym <* pSpec '(' <* pConList <* pSpec ')')   <|< ImpType <$> pUQIdentSym   <|< ImpValue <$> pLQIdentSym +pConList :: P ()+pConList = pSymbol ".." <|< (() <$ esepBy1 pQIdent (pSpec ','))   -- XXX treat list as ..+ -------- -- Types @@ -352,13 +399,14 @@   pure $ if null vs then t else EForall vs t  pForall :: P [IdKind]-pForall = (pKeyword "forall" *> esome pIdKind <* pSymbol ".") <|< pure []+pForall = (forallKW *> esome pIdKind <* pSymbol ".") <|< pure []+  where forallKW = pKeyword "forall" <|< pSymbol "\x2200"  pTypeOp :: P EType pTypeOp = pOperators pTypeOper pTypeArg  pTypeOper :: P Ident-pTypeOper = pOper <|< (mkIdent "->" <$ pSymbol "->") <|< (mkIdent "=>" <$ pSymbol "=>")+pTypeOper = pOper <|< (mkIdent "->" <$ pSRArrow) <|< (mkIdent "=>" <$ pDRArrow)  pTypeArg :: P EType pTypeArg = pTypeApp@@ -398,7 +446,7 @@   <|< pLit   <|< (eTuple <$> (pSpec '(' *> esepBy1 pPat (pSpec ',') <* pSpec ')'))   <|< (EListish . LList <$> (pSpec '[' *> esepBy1 pPat (pSpec ',') <* pSpec ']'))-  <|< (EViewPat <$> (pSpec '(' *> pAExpr) <*> (pSymbol "->" *> pAPat <* pSpec ')'))+  <|< (EViewPat <$> (pSpec '(' *> pAExpr) <*> (pSRArrow *> pAPat <* pSpec ')'))   where evar v Nothing = EVar v         evar v (Just upd) = EUpdate (EVar v) upd @@ -479,7 +527,7 @@  pStmt :: P EStmt pStmt =-      (SBind <$> (pPat <* pSymbol "<-") <*> pExpr)+      (SBind <$> (pPat <* pSLArrow) <*> pExpr)   <|< (SLet  <$> (pKeyword "let" *> pBlock pBind))   <|< (SThen <$> pExpr) @@ -502,13 +550,13 @@   pure $ maybe r (ESign r) mt  pLam :: P Expr-pLam = eLam <$> (pSymbol "\\" *> esome pAPat) <*> (pSymbol "->" *> pExpr)+pLam = eLam <$> (pSymbol "\\" *> esome pAPat) <*> (pSRArrow *> pExpr)  pCase :: P Expr pCase = ECase <$> (pKeyword "case" *> pExpr) <*> (pKeyword "of" *> pBlock pCaseArm)  pCaseArm :: P ECaseArm-pCaseArm = (,) <$> pPat <*> pAlts (pSymbol "->")+pCaseArm = (,) <$> pPat <*> pAlts pSRArrow  pLet :: P Expr pLet = ELet <$> (pKeyword "let" *> pBlock pBind) <*> (pKeyword "in" *> pExpr)
src/MicroHs/TCMonad.hs view
@@ -10,6 +10,7 @@ import Control.Monad.State.Strict import Data.Functor import qualified Data.IntMap as IM+import Data.List(nub) import MicroHs.Ident import qualified MicroHs.IdentMap as M import MicroHs.Expr@@ -52,7 +53,7 @@   case lookup i lenv of     Just e -> Right e     Nothing ->-      case M.lookup i genv of+      case nub <$> M.lookup i genv of         Just [e] -> Right e         Just es  -> Left $ "ambiguous " ++ msg ++ ": " ++ showIdent i ++ " " ++ showListS (showIdent . getAppCon) [ e | Entry e _ <- es ]         Nothing  -> Left $ "undefined " ++ msg ++ ": " ++ showIdent i@@ -67,12 +68,15 @@ stElemsLcl :: forall a . SymTab a -> [a] stElemsLcl (SymTab _genv lenv) = map snd lenv +stKeysLcl :: forall a . SymTab a -> [Ident]+stKeysLcl (SymTab _genv lenv) = map fst lenv+ stInsertLcl :: forall a . Ident -> a -> SymTab a -> SymTab a stInsertLcl i a (SymTab genv lenv) = SymTab genv ((i,a) : lenv)  -- XXX Use insertWith to follow Haskell semantics.-stInsertGlb :: forall a . Ident -> [a] -> SymTab a -> SymTab a-stInsertGlb i as (SymTab genv lenv) = SymTab (M.insert i as genv) lenv+stInsertGlb :: forall a . Eq a => Ident -> [a] -> SymTab a -> SymTab a+stInsertGlb i as (SymTab genv lenv) = SymTab (M.insertWith (++) i as genv) lenv  ----------------------------------------------- -- Entry@@ -160,36 +164,6 @@   defaults    :: Defaults               -- current defaults   } -typeTable :: TCState -> TypeTable-typeTable = (.typeTable)--valueTable :: TCState -> ValueTable-valueTable = (.valueTable)--synTable :: TCState -> SynTable-synTable = (.synTable)--fixTable :: TCState -> FixTable-fixTable = (.fixTable)--assocTable :: TCState -> AssocTable-assocTable = (.assocTable)--uvarSubst :: TCState -> IM.IntMap EType-uvarSubst = (.uvarSubst)--moduleName :: TCState -> IdentModule-moduleName = (.moduleName)--classTable :: TCState -> ClassTable-classTable = (.classTable)--tcMode :: TCState -> TCMode-tcMode = (.tcMode)--ctxTables :: TCState -> (InstTable, MetaTable, TypeEqTable)-ctxTables = (.ctxTables)- instTable :: TCState -> InstTable instTable = (.ctxTables._1) @@ -199,13 +173,7 @@ typeEqTable :: TCState -> TypeEqTable typeEqTable = (.ctxTables._3) -constraints :: TCState -> Constraints-constraints = (.constraints) -defaults :: TCState -> Defaults-defaults = (.defaults)-- putValueTable :: ValueTable -> T () putValueTable venv = modify $ \ ts -> ts{ valueTable = venv } @@ -265,14 +233,7 @@   | TCType          -- doing kind checking   | TCKind          -- doing sort checking   | TCSort          -- doing tier checking-  --deriving (Show)-  deriving (Eq, Ord)--instance Show TCMode where-  show TCExpr = "TCExpr"-  show TCType = "TCType"-  show TCKind = "TCKind"-  show TCSort = "TCSort"+  deriving (Show, Eq, Ord)  instance Enum TCMode where   succ TCExpr = TCType@@ -301,10 +262,11 @@     ECon c -> conIdent c     _ -> error "getIdent" -getAppCon :: EType -> Ident+getAppCon :: HasCallStack => EType -> Ident getAppCon (EVar i) = i+getAppCon (ECon i) = conIdent i getAppCon (EApp f _) = getAppCon f-getAppCon _ = error "getAppCon"+getAppCon e = error $ "getAppCon: " ++ show e  ----------------------------------------------- @@ -326,7 +288,14 @@     go bound (EForall tvs ty) acc = go (map idKindIdent tvs ++ bound) ty acc     go bound (EApp fun arg) acc = go bound fun (go bound arg acc)     go _bound (EUVar _) acc = acc-    go _ _ _ = undefined+    go _bound (ECon _) acc = acc+    go _bound (ELit _ _) acc = acc+    go bound (EOper e ies) acc = go bound e (goList bound (map snd ies) acc)+    go bound (ESign e _) acc = go bound e acc+    go bound (EListish (LList [e])) acc = go bound e acc+    go bound (ETuple es) acc = goList bound es acc+    go _ x _ = error ("freeTyVars: " ++ show x) --  impossibleShow x+    goList bound es acc = foldr (go bound) acc es  addConstraints :: [EConstraint] -> EType -> EType addConstraints []  t = t@@ -362,4 +331,3 @@  tImplies :: EType -> EType -> EType tImplies a r = tApp (tApp (tConI builtinLoc "Primitives.=>") a) r-
src/MicroHs/TypeCheck.hs view
@@ -13,7 +13,7 @@   listPrefix,   ) where import Prelude-import Control.Alternative+import Control.Applicative import Control.Arrow(first) import Control.Monad import Data.Char@@ -110,11 +110,15 @@   [ValueExport]   -- associated values, i.e., constructors, selectors, methods --  deriving (Show) +--instance Show TypeExport where show (TypeExport i _ vs) = showIdent i ++ show vs+ data ValueExport = ValueExport   Ident           -- unqualified name   Entry           -- symbol table entry --  deriving (Show) +--instance Show ValueExport where show (ValueExport i _) = showIdent i+ type FixDef = (Ident, Fixity) type SynDef = (Ident, EType) type ClsDef = (Ident, ClassInfo)@@ -168,10 +172,24 @@     ts' = map (\ (TypeExport i e xvs) -> TypeExport i e $ filter (\ (ValueExport ii _) -> not hide || keep ii ivs) xvs) $           map (\ te@(TypeExport i e _) -> if keep i cts then te else TypeExport i e []) $           filter (\ (TypeExport i _ _) -> keep i its) ts+    msg = "not exported"+    allVs = map (\ (ValueExport i _) -> i) vs +++            concatMap (\ (TypeExport _ _ xvs) -> map (\ (ValueExport i _) -> i) xvs) ts+    allTs = map (\ (TypeExport i _ _) -> i) ts   in+    (if hide then+       id -- don't complain about missing hidden identifiers; we use it for compatibility+     else+       checkBad msg (ivs \\ allVs) .+       checkBad msg (its \\ allTs))     --trace (show (ts, vs)) $     (imp, TModule mn fx ts' ss cs ins vs' a) +checkBad :: forall a . String -> [Ident] -> a -> a+checkBad _ [] a = a+checkBad msg (i:_) _ =+  errorMessage (getSLoc i) $ msg ++ ": " ++ showIdent i+ -- Type and value exports getTVExps :: forall a . M.Map (TModule a) -> TypeTable -> ValueTable -> AssocTable -> ClassTable -> ExportItem ->            ([TypeExport], [ClsDef], [ValueExport])@@ -199,11 +217,6 @@ getTVExps _ _ vals _ _ (ExpValue i) =     ([], [], [ValueExport i (expLookup i vals)]) --- Export all fixities and synonyms.--- The synonyms might be needed, and the fixities are harmless---getFSExps :: forall a . M.Map (TModule a) -> [([FixDef], [SynDef])]---getFSExps impMap = [ (fe, se) | TModule _ fe _ se _ _ <- M.elems impMap ]- expLookup :: Ident -> SymTab Entry -> Entry expLookup i m = either (errorMessage (getSLoc i)) id $ stLookup "export" i m @@ -244,7 +257,7 @@     assoc i = getAssocs vt at (qualIdent mn i)      -- All top level values possible to export.-    ves = [ ValueExport i (Entry (EVar (qualIdent mn i)) ts) | Sign i ts <- tds ]+    ves = [ ValueExport i (Entry (EVar (qualIdent mn i)) ts) | Sign is ts <- tds, i <- is ]      -- All top level types possible to export.     tes =@@ -283,7 +296,7 @@     qns (ImportSpec q _ mas _) mn i =       let         m = fromMaybe mn mas-      in  if q then [qualIdent m i] else [i, qualIdent m i]+      in  if q || isInternalId i then [qualIdent m i] else [i, qualIdent m i]     allValues :: ValueTable     allValues =       let@@ -339,6 +352,13 @@ eqInstDict :: InstDict -> InstDict -> Bool eqInstDict (e, _, _) (e', _, _) = eqExpr e e' +-- Identifier should only be seen with it's qualified name.+isInternalId :: Ident -> Bool+isInternalId i = (instPrefix ++ uniqIdentSep) `isPrefixOf` unIdent i++instPrefix :: String+instPrefix = "inst"+ --------------------------  -- Use the type table as the value table, and the primKind table as the type table.@@ -403,10 +423,12 @@  withDict :: forall a . HasCallStack => Ident -> EConstraint -> T a -> T a withDict i c ta = do+--  traceM $ "+++ withDict enter " ++ show (i, c)   ct <- gets ctxTables   addDict (i, c)   a <- ta   putCtxTables ct+--  traceM $ "--- withDict leave " ++ show (i, c)   return a  addDict :: (Ident, EConstraint) -> T ()@@ -539,7 +561,9 @@        (mkIdentB "~",            [entry nameTypeEq   kTypeTypeConstraintS]),        -- Primitives.hs uses the type [], and it's annoying to fix that.        -- XXX should not be needed-       (mkIdentB (listPrefix ++ "[]"), [entry (listPrefix ++ "[]")        kTypeTypeS])+       (mkIdentB (listPrefix ++ "[]"), [entry (listPrefix ++ "[]") kTypeTypeS]),+       (mkIdentB "\x2192",       [entry nameArrow    kTypeTypeTypeS]),  -- ->+       (mkIdentB "\x21d2",       [entry nameImplies  kImplies])         -- =>       ] ++       map tuple (enumFromTo 2 10) @@ -566,11 +590,6 @@ sArrow :: ESort -> ESort -> ESort sArrow = tArrow -{--isArrow :: EType -> Bool-isArrow = isJust . getArrow--}- getArrow :: EType -> Maybe (EType, EType) getArrow (EApp (EApp (EVar n) a) b) =   if isIdent "->" n || isIdent "Primitives.->" n then Just (a, b) else Nothing@@ -602,7 +621,7 @@  expandSyn :: HasCallStack =>              EType -> T EType-expandSyn at =+expandSyn at = do   let     syn ts t =       case t of@@ -631,7 +650,7 @@         ELit _ (LStr _) -> return t         ELit _ (LInteger _) -> return t         _ -> impossible-  in syn [] at+  syn [] at  mapEType :: (EType -> EType) -> EType -> EType mapEType fn = rec@@ -689,7 +708,6 @@   bb <- expandSyn b   unifyR loc aa bb --- XXX should do occur check unifyR :: HasCallStack =>           SLoc -> EType -> EType -> T () unifyR _   (EVar x1)    (EVar x2)  | x1 == x2      = return ()@@ -709,6 +727,7 @@             SLoc -> TRef -> EType -> T () unifyVar loc r t = do   mt <- getUVar r+--  traceM $ "unifyVar: " ++ show (r,t)   case mt of     Nothing -> unifyUnboundVar loc r t     Just t' -> unify loc t' t@@ -918,6 +937,7 @@ tcExpand dst = withTypeTable $ do   dsc <- concat <$> mapM expandClass dst       -- Expand all class definitions   dsf <- concat <$> mapM expandField dsc       -- Add HasField instances+--  traceM $ showEDefs dsf   dsd <- concat <$> mapM doDeriving  dsf       -- Add derived instances --  traceM $ showEDefs dsd   dsi <- concat <$> mapM expandInst  dsd       -- Expand all instance definitions@@ -946,11 +966,10 @@     addAssoc i is = do       mn <- gets moduleName       addAssocTable (qualIdent mn i) (map (qualIdent mn) is)-    assocData (Constr _ _ c _) = [c]-{-+--    assocData (Constr _ _ c _) = [c]     assocData (Constr _ _ c (Left _)) = [c]     assocData (Constr _ _ c (Right its)) = c : map fst its--}+     addDef (i, _) = do       k <-         case M.lookup i kdefs of@@ -992,13 +1011,13 @@     Newtype lhs c  ds      -> withLHS lhs $ \ lhs' -> (,kType)       <$> (Newtype lhs'  <$> tcConstr c       <*> mapM tcDerive ds)     Type    lhs t          -> withLHS lhs $ \ lhs' -> first              (Type    lhs') <$> tInferTypeT t     Class   ctx lhs fds ms -> withLHS lhs $ \ lhs' -> (,kConstraint) <$> (Class         <$> tcCtx ctx <*> return lhs' <*> mapM tcFD fds <*> mapM tcMethod ms)-    Sign      i t          ->                                             Sign      i   <$> tCheckTypeT kType t-    ForImp ie i t          ->                                             ForImp ie i   <$> tCheckTypeT kType t-    Instance ct m          ->                                             Instance      <$> tCheckTypeT kConstraint ct <*> return m+    Sign      is t         ->                                             Sign      is  <$> tCheckTypeTImpl kType t+    ForImp ie i t          ->                                             ForImp ie i   <$> tCheckTypeTImpl kType t+    Instance ct m          ->                                             Instance      <$> tCheckTypeTImpl kConstraint ct <*> return m     Default ts             ->                                             Default       <$> mapM (tCheckTypeT kType) ts     _                      -> return def  where-   tcMethod (BSign i t) = BSign i <$> tcTypeT (Check kType) t+   tcMethod (BSign i t) = BSign i <$> tCheckTypeTImpl kType t    tcMethod m = return m    tcFD (is, os) = (,) <$> mapM tcV is <*> mapM tcV os      where tcV i = do { _ <- tLookup "fundep" i; return i }@@ -1011,7 +1030,7 @@     (a, kr) <- ta (i, vks')     let kapp = foldr kArrow kr (map (\ (IdKind _ k) -> k) vks')     --unify (getSLoc i) ki kapp-    _ <- subsCheckRho (getSLoc i) undefined ki kapp+    _ <- subsCheckRho (getSLoc i) eCannotHappen ki kapp     return a  tcCtx :: HasCallStack => [EConstraint] -> T [EConstraint]@@ -1081,7 +1100,7 @@       methIds = map (\ (BSign i _) -> i) meths       mdflts = [ (i, eqns) | BFcn i eqns <- ms ]       tCtx = tApps (qualIdent mn iCls) (map (EVar . idKindIdent) vks)-      mkDflt (BSign methId t) = [ Sign iDflt $ EForall vks $ tCtx `tImplies` t, def $ lookup methId mdflts ]+      mkDflt (BSign methId t) = [ Sign [iDflt] $ EForall vks $ tCtx `tImplies` t, def $ lookup methId mdflts ]         where def Nothing = Fcn iDflt $ simpleEqn noDflt               def (Just eqns) = Fcn iDflt eqns               iDflt = mkDefaultMethodId methId@@ -1094,8 +1113,11 @@ expandClass d = return [d]  simpleEqn :: Expr -> [Eqn]-simpleEqn e = [Eqn [] $ EAlts [([], e)] []]+simpleEqn e = [Eqn [] $ simpleAlts e] +simpleAlts :: Expr -> EAlts+simpleAlts e = EAlts [([], e)] []+ -- Keep the list empty if there are no fundeps mkIFunDeps :: [Ident] -> [FunDep] -> [IFunDep] --mkIFunDeps vs [] = [(map (const True) vs, map (const False) vs)]@@ -1108,16 +1130,6 @@ mkDefaultMethodId :: Ident -> Ident mkDefaultMethodId meth = addIdentSuffix meth "$dflt" -{--clsToDict :: EType -> T EType-clsToDict = do-  -- XXX for now, only allow contexts of the form (C t1 ... tn)-  let usup as (EVar c) | isConIdent c = return (tApps c as)-      usup as (EApp f a) = usup (a:as) f-      usup _ t = tcError (getSLoc t) ("bad context " ++ showEType t)-  usup []--}- splitInst :: EConstraint -> ([IdKind], [EConstraint], EConstraint) splitInst (EForall iks t) =   case splitInst t of@@ -1132,8 +1144,8 @@   (vks, ctx, cc) <- splitInst <$> expandSyn act   let loc = getSLoc act       qiCls = getAppCon cc-  iInst <- newIdent loc "inst"-  let sign = Sign iInst act+  iInst <- newIdent loc instPrefix+  let sign = Sign [iInst] act --  (e, _) <- tLookupV iCls   ct <- gets classTable --  let qiCls = getAppCon e@@ -1167,18 +1179,25 @@ addValueType :: EDef -> T () addValueType adef = do   mn <- gets moduleName+  -- traceM ("addValueType: " ++ showEDefs [adef])   case adef of-    Sign i t -> extValQTop i t-    Data (i, vks) cs _ -> do+    Sign is t -> mapM_ (\ i -> extValQTop i t) is+    Data (tycon, vks) cs _ -> do       let         cti = [ (qualIdent mn c, either length length ets + if null ctx then 0 else 1) | Constr _ ctx c ets <- cs ]-        tret = tApps (qualIdent mn i) (map tVarK vks)+        tret = tApps (qualIdent mn tycon) (map tVarK vks)         addCon (Constr evks ectx c ets) = do           let ts = either id (map snd) ets               cty = EForall vks $ EForall evks $ addConstraints ectx $ foldr (tArrow . snd) tret ts               fs = either (const []) (map fst) ets           extValETop c cty (ECon $ ConData cti (qualIdent mn c) fs)+        addConFields (Constr _ _ _ (Left _)) = return ()+        addConFields (Constr _ _ _ (Right fs)) = mapM_ addField fs+          where addField (fld, _) = do+                  (fe, fty) <- tLookup "???" $ mkGetName tycon fld+                  extValETop fld fty fe       mapM_ addCon cs+      mapM_ addConFields cs     Newtype (i, vks) (Constr _ _ c ets) _ -> do       let         t = snd $ head $ either id (map snd) ets@@ -1212,22 +1231,9 @@   -- Update class table, now with actual constructor type.   addClassTable qiCls (vks, ctx, iConTy, methIds, mkIFunDeps (map idKindIdent vks) fds) -{--bundleConstraints :: [EConstraint] -> EType -> EType-bundleConstraints []  t = t-bundleConstraints [c] t = tImplies c t-bundleConstraints cs  t = tImplies (ETuple cs) t--}- mkClassConstructor :: Ident -> Ident mkClassConstructor i = addIdentSuffix i "$C" -{--unForall :: EType -> ([IdKind], EType)-unForall (EForall iks t) = (iks, t)-unForall t = ([], t)--}- tcDefValue :: HasCallStack =>               EDef -> T EDef tcDefValue adef =@@ -1249,6 +1255,17 @@       return (ForImp ie (qualIdent mn i) t')     _ -> return adef +-- Add implicit forall and type check.+tCheckTypeTImpl :: HasCallStack => EType -> EType -> T EType+tCheckTypeTImpl tchk t@(EForall _ _) = tCheckTypeT tchk t+tCheckTypeTImpl tchk t = do+  bvs <- stKeysLcl <$> gets valueTable         -- bound outside+  let fvs = freeTyVars [t]                     -- free variables in t+      -- these are free, and need quantification.  eDummy indicates missing kind+      iks = map (\ i -> IdKind i eDummy) (fvs \\ bvs)+  --when (not (null iks)) $ traceM ("tCheckTypeTImpl: " ++ show (t, eForall iks t))+  tCheckTypeT tchk (eForall iks t)+ tCheckTypeT :: HasCallStack => EType -> EType -> T EType tCheckTypeT = tCheck tcTypeT @@ -1306,9 +1323,9 @@ tCheckExpr :: HasCallStack =>               EType -> Expr -> T Expr tCheckExpr t e | Just (ctx, t') <- getImplies t = do---  error $ "tCheckExpr: " ++ show (e, ctx, t')+--  traceM $ "tCheckExpr: " ++ show (e, ctx, t')   d <- newADictIdent (getSLoc e)-  e' <- withDict d ctx $ tCheckExpr t' e+  e' <- withDict d ctx $ tCheckExprAndSolve t' e   return $ eLam [EVar d] e'  tCheckExpr t e = tCheck tcExpr t e@@ -1335,16 +1352,6 @@ tGetExpType (Check t) = return t tGetExpType (Infer r) = tGetRefType r -{---- Get the type of a possibly unset Expected-tGetExpTypeSet :: SLoc -> Expected -> T EType-tGetExpTypeSet _   (Check t) = return t-tGetExpTypeSet loc (Infer r) = tGetRefType r {-do-  t <- newUVar-  tSetRefType loc r t-  return t-}--}- tcExpr :: HasCallStack =>           Expected -> Expr -> T Expr tcExpr mt ae = do@@ -1377,14 +1384,15 @@                case t of                  EUVar r -> fmap (fromMaybe t) (getUVar r)                  _ -> return t---             traceM ("EVar " ++ showIdent i ++ " :: " ++ showExpr t ++ " = " ++ showExpr t')+--             traceM $ "EVar: " ++ showIdent i ++ " :: " ++ showExpr t ++ " = " ++ showExpr t' ++ " mt=" ++ show mt              instSigma loc e t' mt      EApp f a -> do+--      traceM $ "txExpr(0) EApp: expr=" ++ show ae ++ ":: " ++ show mt       (f', ft) <- tInferExpr f---      traceM $ "tcExpr(1) EApp f=" ++ show f ++ "; f'=" ++ show f' ++ " :: " ++ show ft+--      traceM $ "tcExpr(1) EApp: f=" ++ show f ++ "; f'=" ++ show f' ++ " :: " ++ show ft       (at, rt) <- unArrow loc ft---      traceM $ "tcExpr(2) EApp: f=" ++ show f ++ " :: " ++ show ft ++ ", a=" ++ show a ++ " :: " ++ show at ++ " rt=" ++ show rt+--      traceM $ "tcExpr(2) EApp: f=" ++ show f ++ " :: " ++ show ft ++ ", arg=" ++ show a ++ " :: " ++ show at ++ " retty=" ++ show rt       a' <- checkSigma a at       instSigma loc (EApp f' a') rt mt @@ -1411,9 +1419,9 @@               case mex of                 -- Convert to Int in the compiler, that way (99::Int) will never involve fromInteger                 -- (which is not always in scope).-                Just v | v == mkIdent nameInt     -> tcLit  mt loc' (LInt (_integerToInt i))-                       | v == mkIdent nameWord    -> tcLit' mt loc' (LInt (_integerToInt i)) (tConI loc' nameWord)-                       | v == mkIdent nameDouble  -> tcLit  mt loc' (LDouble (_integerToDouble i))+                Just v | v == mkIdent nameInt     -> tcLit  mt loc' (LInt (fromInteger i))+                       | v == mkIdent nameWord    -> tcLit' mt loc' (LInt (fromInteger i)) (tConI loc' nameWord)+                       | v == mkIdent nameDouble  -> tcLit  mt loc' (LDouble (fromInteger i))                        | v == mkIdent nameInteger -> tcLit  mt loc' l                 _ -> do                   (f, ft) <- tInferExpr (EVar (mkIdentSLoc loc' "fromInteger"))  -- XXX should have this qualified somehow@@ -1463,8 +1471,13 @@                 ibind = mkIdentSLoc loc ">>="                 sbind = maybe ibind (\ mn -> qualIdent mn ibind) mmn                 x = eVarI loc "$b"+                patAlt = [(p, simpleAlts $ EDo mmn ss)]+                failMsg s = EApp (EVar (mkIdentSLoc loc "fail")) (ELit loc (LStr s))+                failAlt =+                  if failureFree p then []+                  else [(EVar dummyIdent, simpleAlts $ failMsg "bind")]               tcExpr mt (EApp (EApp (EVar sbind) a)-                              (eLam [x] (ECase x [(p, EAlts [([], EDo mmn ss)] [])])))+                              (eLam [x] (ECase x (patAlt ++ failAlt))))             SThen a -> do               let                 ithen = mkIdentSLoc loc ">>"@@ -1549,8 +1562,14 @@     _ -> error $ "tcExpr: cannot handle: " ++ show (getSLoc ae) ++ " " ++ show ae       -- impossible +-- Approximation if failure free+failureFree :: EPat -> Bool+failureFree (EVar _) = True+failureFree (ETuple ps) = all failureFree ps+failureFree (ESign p _) = failureFree p+failureFree _ = False+ eSetFields :: EField -> Expr -> Expr---eSetFields ([i], e) r = eSetField (i, e) r eSetFields (EField is e) r =   let loc = getSLoc is       eCompose = EVar $ mkIdentSLoc loc "composeSet"@@ -1601,6 +1620,7 @@     EViewPat e p -> EViewPat e <$> dsEFields p     ECon _ -> return apat     EUpdate c fs -> EUpdate c . concat <$> mapM (dsEField c) fs+    ENegApp _ -> return apat     _ -> error $ "dsEFields " ++ show apat  -- XXX could be better@@ -1876,7 +1896,7 @@                (p, t) <- tLookupV i                case t of                  EUVar r -> tSetRefType loc r ext-                 _ -> impossible+                 _ -> impossibleShow t                return ([], [], p)      EOper e ies -> do e' <- tcOper e ies; tcPat mt e'@@ -1988,14 +2008,14 @@     nbs <- mapM tcBind xbs     ta nbs -tcBindVarT :: M.Map EType -> Ident -> T (Ident, EType)+tcBindVarT :: HasCallStack => M.Map EType -> Ident -> T (Ident, EType) tcBindVarT tmap x = do   case M.lookup x tmap of     Nothing -> do       t <- newUVar       return (x, t)     Just t -> do-      tt <- withTypeTable $ tcTypeT (Check kType) t+      tt <- withTypeTable $ tCheckTypeTImpl kType t       return (x, tt)  tcBind :: EBind -> T EBind@@ -2144,6 +2164,8 @@               Expr -> Sigma -> T Expr checkSigma expr sigma = do   (skol_tvs, rho) <- skolemise sigma+--  sigma' <- derefUVar sigma+--  traceM $ "**** checkSigma: " ++ show expr ++ " :: " ++ show sigma ++ " = " ++ show sigma' ++ " " ++ show skol_tvs   expr' <- tCheckExpr rho expr   if null skol_tvs then     -- Fast special case@@ -2172,13 +2194,14 @@   (a2,r2) <- unArrow loc rho2   subsCheckFun loc exp1 a1 r1 a2 r2 subsCheckRho loc exp1 tau1 tau2 = do  -- Rule MONO+--  traceM $ "subsCheckRho: MONO " ++ show (tau1, tau2)   unify loc tau1 tau2 -- Revert to ordinary unification   return exp1  subsCheckFun :: HasCallStack =>                 SLoc -> Expr -> Sigma -> Rho -> Sigma -> Rho -> T Expr subsCheckFun loc e1 a1 r1 a2 r2 = do-  _ <- subsCheck loc undefined a2 a1   -- XXX+  _ <- subsCheck loc eCannotHappen a2 a1   -- XXX   subsCheckRho loc e1 r1 r2  instSigma :: HasCallStack =>@@ -2192,6 +2215,10 @@   tSetRefType loc r t1'   return e1' +eCannotHappen :: Expr+eCannotHappen = --undefined+                EVar $ mkIdent "cannot-happen"+ -----  -- Given a dictionary of a (constraint type), split it up@@ -2216,7 +2243,9 @@         Nothing -> do           -- if iCls is a variable it's not in the class table, otherwise it's an error           when (isConIdent iCls) $-            impossible+            --impossible+            -- XXX it seems we can get here, e.g., Control.Monad.Fail without Applicative import+            error ("expandDict: " ++ show iCls)           return [(edict, vks, ctx, cc, [])]         Just (iks, sups, _, _, fds) -> do           let @@ -2378,6 +2407,7 @@ solveGen fds insts loc iCls cts = do --  traceM ("solveGen " ++ showEType ct)   let matches = getBestMatches $ findMatches loc fds insts cts+--  traceM ("matches " ++ showListS show (findMatches loc fds insts cts)) --  traceM ("matches " ++ showListS showMatch matches)   case matches of     []              -> return Nothing@@ -2509,12 +2539,13 @@         Just t' -> matchType [] t' t  -- Get the best matches.  These are the matches with the smallest substitution.+-- Always prefer arguments rather than global instances. getBestMatches :: [(Int, (Expr, [EConstraint], [Improve]))] -> [(Expr, [EConstraint], [Improve])] getBestMatches [] = [] getBestMatches ams =-  let (args, insts) = partition (\ (_, (ei, _, _)) -> (adictPrefix ++ uniqIdentSep) `isPrefixOf` unIdent (unvar ei)) ams-      unvar (EVar i) = i-      unvar e = impossibleShow e+  let (args, insts) = partition (\ (_, (ei, _, _)) -> isDictArg ei) ams+      isDictArg (EVar i) = (adictPrefix ++ uniqIdentSep) `isPrefixOf` unIdent i+      isDictArg _ = True       pick ms =         let b = minimum (map fst ms)         -- minimum substitution size         in  [ ec | (s, ec) <- ms, s == b ]   -- pick out the smallest
src/Text/ParserComb.hs view
@@ -1,6 +1,7 @@ -- Copyright 2023 Lennart Augustsson -- See LICENSE file for full license. {-# OPTIONS_GHC -Wno-type-defaults #-}+{-# LANGUAGE FunctionalDependencies #-} module Text.ParserComb(   (>>=), (>>), pure,   (<*), (*>), (<*>), (<$), (<$>),@@ -8,7 +9,7 @@   fail, guard,   get, put, modify,   Prsr, runPrsr,-  satisfy, satisfyM, eof,+  satisfy, satisfyM,   choice,   many, emany, optional, eoptional,   some, esome,@@ -17,13 +18,16 @@   (<?>), (<|<),   --notFollowedBy,   lookAhead,-  inject, nextToken,+  nextToken,   LastFail(..),+  TokenMachine(..),+  mapTokenState,   ) where --Ximport Prelude() import Prelude-import Control.Alternative-import Control.Monad --Xhiding(guard)+import Control.Applicative+import Control.Monad+import Compat  data LastFail t   = LastFail Int [t] [String]@@ -47,40 +51,56 @@ longests :: forall t . [LastFail t] -> LastFail t longests xs = foldl1 longest xs -data Res s t a = Many [(a, ([t], s))] (LastFail t)+class TokenMachine tm t | tm -> t where+  tmNextToken :: tm -> (t, tm)+  tmRawTokens :: tm -> [t]++tmLeft :: forall tm t . TokenMachine tm t => tm -> Int+tmLeft = length . tmRawTokens++firstToken :: forall tm t . TokenMachine tm t => tm -> [t]+firstToken tm =+  case tmNextToken tm of+    (t, _) -> [t]++type Res :: Type -> Type -> Type -> Type -> Type+data Res s tm t a = Many [(a, (tm, s))] (LastFail t)   --deriving (Show) --- | -data Prsr s t a = P (([t], s) -> Res s t a)+type Prsr :: Type -> Type -> Type -> Type -> Type+data Prsr s tm t a = P ((tm, s) -> Res s tm t a) --instance Show (Prsr s t a) where show _ = "<<Prsr>>" -runP :: forall s t a . Prsr s t a -> (([t], s) -> Res s t a)+runP :: forall s tm t a . Prsr s tm t a -> ((tm, s) -> Res s tm t a) runP (P p) = p -instance forall s t . Functor (Prsr s t) where+mapTokenState :: forall s tm t . (tm -> tm) -> Prsr s tm t ()+mapTokenState f = P (\ (tm, s) -> Many [((), (f tm, s))] noFail)++instance forall s tm t . Functor (Prsr s tm t) where   fmap f p = P $ \ t ->     case runP p t of       Many aus lf -> Many [ (f a, u) | (a, u) <- aus ] lf -instance forall s t . Applicative (Prsr s t) where+instance forall s tm t . Applicative (Prsr s tm t) where   pure a = P $ \ t -> Many [(a, t)] noFail   (<*>) = ap   (*>) p k = p >>= \ _ -> k -instance forall s t . Monad (Prsr s t) where+instance forall s tm t . Monad (Prsr s tm t) where   (>>=) p k = P $ \ t ->     case runP p t of       Many aus plf ->-        let { xss = [ runP (k a) u | au <- aus, let { (a, u) = au } ] }-        in  case unzip [ (rs, lf) | xs <- xss, let { Many rs lf = xs } ] of+        let { xss = [ runP (k a) u | (a, u) <- aus ] }+        in  case unzip [ (rs, lf) | Many rs lf <- xss ] of               (rss, lfs) -> Many (concat rss) (longests (plf : lfs))   return = pure -instance forall s t . MonadFail (Prsr s t) where-  fail m = P $ \ (ts, _) -> Many [] (LastFail (length ts) (take 1 ts) [m])+instance forall s t tm . TokenMachine tm t => MonadFail (Prsr s tm t) where+  fail m = P $ \ (ts, _) -> Many [] (LastFail (tmLeft ts) (firstToken ts) [m]) -instance forall s t . Alternative (Prsr s t) where-  empty = P $ \ (ts, _) -> Many [] (LastFail (length ts) (take 1 ts) [])+instance forall s t tm . TokenMachine tm t => Alternative (Prsr s tm t) where+  empty = P $ \ (ts, _) -> Many [] (LastFail (tmLeft ts) (firstToken ts) [])    (<|>) p q = P $ \ t ->     case runP p t of@@ -88,75 +108,18 @@         case runP q t of           Many b lfb -> Many (a ++ b) (longest lfa lfb) -{--pure :: forall s t a . a -> Prsr s t a-pure a = P $ \ t -> Many [(a, t)] noFail--infixl 1 >>=-(>>=) :: forall s t a b . Prsr s t a -> (a -> Prsr s t b) -> Prsr s t b-(>>=) p k = P $ \ t ->-    case runP p t of-      Many aus plf ->-        let { xss = [ runP (k a) u | au <- aus, let { (a, u) = au } ] }-        in  case unzip [ (rs, lf) | xs <- xss, let { Many rs lf = xs } ] of-              (rss, lfs) -> Many (concat rss) (longests (plf : lfs))--infixl 1 >>-(>>) :: forall s t a b . Prsr s t a -> Prsr s t b -> Prsr s t b-(>>) p k = p >>= \ _ -> k--infixl 4 <*>-(<*>) :: forall s t a b . Prsr s t (a -> b) -> Prsr s t a -> Prsr s t b-(<*>) m1 m2 = m1 >>= \ x1 -> m2 >>= \ x2 -> pure (x1 x2)--infixl 4 <*-(<*) :: forall s t a b . Prsr s t a -> Prsr s t b -> Prsr s t a-(<*) m1 m2 = m1 >>= \ x1 -> m2 >> pure x1--infixl 4 *>-(*>) :: forall s t a b . Prsr s t a -> Prsr s t b -> Prsr s t b-(*>) m1 m2 = m1 >> m2 >>= \ x2 -> pure x2--infixl 4 <$>-(<$>) :: forall s t a b . (a -> b) -> Prsr s t a -> Prsr s t b-(<$>) f p = P $ \ t ->-    case runP p t of-      Many aus lf -> Many [ (f a, u) | (a, u) <- aus ] lf--infixl 4 <$-(<$) :: forall s t a b . a -> Prsr s t b -> Prsr s t a-(<$) a p = p >> pure a--guard :: forall s t . Bool -> Prsr s t ()-guard b = if b then pure () else empty--empty :: forall s t a . Prsr s t a-empty = P $ \ (ts, _) -> Many [] (LastFail (length ts) (take 1 ts) [])--infixl 3 <|>-(<|>) :: forall s t a . Prsr s t a -> Prsr s t a -> Prsr s t a-(<|>) p q = P $ \ t ->-    case runP p t of-      Many a lfa ->-        case runP q t of-          Many b lfb -> Many (a ++ b) (longest lfa lfb)--fail :: forall s t a . String -> Prsr s t a-fail m = P $ \ (ts, _) -> Many [] (LastFail (length ts) (take 1 ts) [m])--}--get :: forall s t . Prsr s t s+get :: forall s tm t . Prsr s tm t s get = P $ \ t@(_, s) -> Many [(s, t)] noFail -put :: forall s t . s -> Prsr s t ()+put :: forall s tm t . s -> Prsr s tm t () put s = P $ \ (ts, _) -> Many [((), (ts, s))] noFail -modify :: forall s t . (s -> s) -> Prsr s t ()+modify :: forall s tm t . (s -> s) -> Prsr s tm t () modify f = get >>= \ s -> put (f s)  -- Left biased choice infixl 3 <|<-(<|<) :: forall s t a . Prsr s t a -> Prsr s t a -> Prsr s t a+(<|<) :: forall s tm t a . Prsr s tm t a -> Prsr s tm t a -> Prsr s tm t a (<|<) p q = P $ \ t ->   case runP p t of     Many [] lfa ->@@ -164,63 +127,52 @@          Many b lfb -> Many b (longest lfa lfb)     r -> r -{--many :: forall s t a . Prsr s t a -> Prsr s t [a]-many p = some p <|> pure []--some :: forall s t a . Prsr s t a -> Prsr s t [a]-some p = (:) <$> p <*> many p--}--optional :: forall s t a . Prsr s t a -> Prsr s t (Maybe a)-optional p = (Just <$> p) <|> pure Nothing--emany :: forall s t a . Prsr s t a -> Prsr s t [a]+emany :: forall s tm t a . Prsr s tm t a -> Prsr s tm t [a] emany p = esome p <|< pure [] -esome :: forall s t a . Prsr s t a -> Prsr s t [a]+esome :: forall s tm t a . Prsr s tm t a -> Prsr s tm t [a] esome p = (:) <$> p <*> emany p -eoptional :: forall s t a . Prsr s t a -> Prsr s t (Maybe a)+eoptional :: forall s tm t a . Prsr s tm t a -> Prsr s tm t (Maybe a) eoptional p = (Just <$> p) <|< pure Nothing -runPrsr :: forall s t a . --X(Show a, Show s) =>-           s -> Prsr s t a -> [t] -> Either (LastFail t) [(a, s)]+runPrsr :: forall s tm t a . --X(Show a, Show s) =>+           s -> Prsr s tm t a -> tm -> Either (LastFail t) [(a, s)] runPrsr s (P p) f =   case p (f, s) of     Many [] lf -> Left lf     Many xs _  -> Right [(a, snd x) | (a, x) <- xs ] -choice :: forall s t a . [Prsr s t a] -> Prsr s t a+choice :: forall s tm t a . TokenMachine tm t => [Prsr s tm t a] -> Prsr s tm t a choice [] = empty choice ps = foldr1 (<|>) ps -satisfy :: forall s t . String -> (t -> Bool) -> Prsr s t t+satisfy :: forall s tm t . TokenMachine tm t => String -> (t -> Bool) -> Prsr s tm t t satisfy msg f = P $ \ (acs, s) ->-  case acs of-    c:cs | f c -> Many [(c, (cs, s))] noFail-    _ -> Many [] (LastFail (length acs) (take 1 acs) [msg])+  case tmNextToken acs of+    (c, cs) | f c -> Many [(c, (cs, s))] noFail+    _ -> Many [] (LastFail (tmLeft acs) (firstToken acs) [msg]) -satisfyM :: forall s t a . String -> (t -> Maybe a) -> Prsr s t a+satisfyM :: forall s tm t a . TokenMachine tm t => String -> (t -> Maybe a) -> Prsr s tm t a satisfyM msg f = P $ \ (acs, s) ->-  case acs of-    c:cs | Just a <- f c -> Many [(a, (cs, s))] noFail-    _ -> Many [] (LastFail (length acs) (take 1 acs) [msg])+  case tmNextToken acs of+    (c, cs) | Just a <- f c -> Many [(a, (cs, s))] noFail+    _ -> Many [] (LastFail (tmLeft acs) (firstToken acs) [msg]) -eof :: forall s t . Prsr s t ()+{-+eof :: forall s tm t . TokenMachine tm t => Prsr s tm t () eof = P $ \ t@(cs, _) ->- if null cs then-   Many [((), t)] noFail- else-   Many [] (LastFail (length cs) (take 1 cs) ["eof"])+  case tmNextToken cs of+    Nothing -> Many [((), t)] noFail+    Just _  -> Many [] (LastFail (tmLeft cs) (firstToken cs) ["eof"])+-}  infixl 9 <?>-(<?>) :: forall s t a . Prsr s t a -> String -> Prsr s t a+(<?>) :: forall s tm t a . Prsr s tm t a -> String -> Prsr s tm t a (<?>) p e = P $ \ t -> --  trace ("<?> " ++ show e) $   case runP p t of-    Many rs (LastFail l ts _) ->-      Many rs (LastFail l ts [e])+    Many rs (LastFail l ts _) -> Many rs (LastFail l ts [e])  {- notFollowedBy :: forall s t a . Prsr s t a -> Prsr s t ()@@ -230,32 +182,29 @@     _         -> Many [] (LastFail (length ts) (take 1 ts) ["!"]) -} -lookAhead :: forall s t a . Prsr s t a -> Prsr s t ()+lookAhead :: forall s tm t a . TokenMachine tm t => Prsr s tm t a -> Prsr s tm t () lookAhead p = P $ \ t ->   case runP p t of     Many [] (LastFail l ts xs) -> Many [] (LastFail l (take 1 ts) xs)     _                          -> Many [((), t)] noFail -nextToken :: forall s t . Prsr s t t+nextToken :: forall s tm t . TokenMachine tm t => Prsr s tm t t nextToken = P $ \ t@(cs, _) ->-  case cs of-    [] ->  Many [] (LastFail (length cs) [] ["!eof"])-    c:_ -> Many [(c, t)] noFail--inject :: forall s t . [t] -> Prsr s t ()-inject s = P $ \ (cs, st) -> Many [((), (s ++ cs, st))] noFail+  case tmNextToken cs of+    (c, _) -> Many [(c, t)] noFail -sepBy1 :: forall s t a sep . Prsr s t a -> Prsr s t sep -> Prsr s t [a]+sepBy1 :: forall s tm t a sep . TokenMachine tm t => Prsr s tm t a -> Prsr s tm t sep -> Prsr s tm t [a] sepBy1 p sep = (:) <$> p <*> many (sep *> p) -esepBy1 :: forall s t a sep . Prsr s t a -> Prsr s t sep -> Prsr s t [a]+esepBy1 :: forall s tm t a sep . Prsr s tm t a -> Prsr s tm t sep -> Prsr s tm t [a] esepBy1 p sep = (:) <$> p <*> emany (sep *> p) -esepBy :: forall s t a sep . Prsr s t a -> Prsr s t sep -> Prsr s t [a]+esepBy :: forall s tm t a sep . Prsr s tm t a -> Prsr s tm t sep -> Prsr s tm t [a] esepBy p sep = esepBy1 p sep <|< pure [] -esepEndBy :: forall s t a sep . Prsr s t a -> Prsr s t sep -> Prsr s t [a]+esepEndBy :: forall s tm t a sep . Prsr s tm t a -> Prsr s tm t sep -> Prsr s tm t [a] esepEndBy p sep = esepEndBy1 p sep <|< pure [] -esepEndBy1 :: forall s t a sep . Prsr s t a -> Prsr s t sep -> Prsr s t [a]+esepEndBy1 :: forall s tm t a sep . Prsr s tm t a -> Prsr s tm t sep -> Prsr s tm t [a] esepEndBy1 p sep = (:) <$> p <*> ((sep *> esepEndBy p sep) <|< pure [])+
+ src/runtime/bfile.c view
@@ -0,0 +1,503 @@++/***************** BFILE *******************/+/*+ * BFILE is used to access files.+ * It allows various "transducers" to be added+ * to the processing.+ */++/* Sanity checking */+#define CHECKBFILE(p, f) do { if (p->getb != f) ERR("CHECKBFILE"); } while(0)++/* BFILE will have different implementations, they all have these methods */+typedef struct BFILE {+  int (*getb)(struct BFILE*);+  void (*ungetb)(int, struct BFILE*);+  void (*putb)(int, struct BFILE*);+  void (*flushb)(struct BFILE*);+  void (*closeb)(struct BFILE*);+} BFILE;++static INLINE int+getb(BFILE *p)+{+  return p->getb(p);+}++static INLINE void+ungetb(int c, BFILE *p)+{+  p->ungetb(c, p);+}++static INLINE void+putb(int c, BFILE *p)+{+  p->putb(c, p);+}++static INLINE void+closeb(BFILE *p)+{+  p->closeb(p);+}++static INLINE void+flushb(BFILE *p)+{+  p->flushb(p);+}++void+putsb(const char *str, struct BFILE *p)+{+  char c;+  while ((c = *str++))+    putb(c, p);+}++size_t+readb(void *abuf, size_t size, BFILE *p)+{+  uint8_t *buf = abuf;+  size_t s;+  for (s = 0; s < size; s++) {+    int c = getb(p);+    if (c < 0)+      break;+    buf[s] = c;+  }+  return s;+}++/* convert -n to a string, handles MINBOUND correctly */+void+putnegb(value_t n, BFILE *p)+{+  int c = '0' - n % 10;+  if (n <= -10) {+    putnegb(n / 10, p);+  }+  putb(c, p);+}++void+putdecb(value_t n, BFILE *p)+{+  if (n < 0) {+    putb('-', p);+    putnegb(n, p);+  } else {+    putnegb(-n, p);+  }+}++/***************** BFILE from static buffer *******************/+struct BFILE_buffer {+  BFILE    mets;+  size_t   b_size;+  size_t   b_pos;+  uint8_t  *b_buffer;+};++int+getb_buf(BFILE *bp)+{+  struct BFILE_buffer *p = (struct BFILE_buffer *)bp;+  CHECKBFILE(bp, getb_buf);+  if (p->b_pos >= p->b_size)+    return -1;+  return p->b_buffer[p->b_pos++];+}++void+ungetb_buf(int c, BFILE *bp)+{+  struct BFILE_buffer *p = (struct BFILE_buffer *)bp;+  CHECKBFILE(bp, getb_buf);+  if (p->b_pos == 0)+    ERR("ungetb");+  p->b_buffer[--p->b_pos] = (uint8_t)c;+}++void+closeb_buf(BFILE *bp)+{+  CHECKBFILE(bp, getb_buf);+  FREE(bp);+}++/* There is no open().  Only used with statically allocated buffers. */+struct BFILE*+openb_buf(uint8_t *buf, size_t len)+{+  struct BFILE_buffer *p = MALLOC(sizeof(struct BFILE_buffer));;+  if (!p)+    memerr();+  p->mets.getb = getb_buf;+  p->mets.ungetb = ungetb_buf;+  p->mets.putb = 0;+  p->mets.flushb = 0;+  p->mets.closeb = closeb_buf;+  p->b_size = len;+  p->b_pos = 0;+  p->b_buffer = buf;+  return (struct BFILE*)p;+}++#if WANT_STDIO+/***************** BFILE via FILE *******************/+struct BFILE_file {+  BFILE    mets;+  FILE    *file;+};++int+getb_file(BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  return fgetc(p->file);+}++void+ungetb_file(int c, BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  ungetc(c, p->file);+}++void+putb_file(int c, BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  (void)fputc(c, p->file);+}++void+flushb_file(BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  fflush(p->file);+}++void+closeb_file(BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  fclose(p->file);+  FREE(p);+}++void+freeb_file(BFILE *bp)+{+  struct BFILE_file *p = (struct BFILE_file *)bp;+  CHECKBFILE(bp, getb_file);+  FREE(p);+}++BFILE *+add_FILE(FILE *f)+{+  struct BFILE_file *p = MALLOC(sizeof (struct BFILE_file));+  if (!p)+    memerr();+  p->mets.getb   = getb_file;+  p->mets.ungetb = ungetb_file;+  p->mets.putb   = putb_file;+  p->mets.flushb = flushb_file;+  p->mets.closeb = closeb_file;+  p->file = f;+  return (BFILE*)p;+}+#endif++/***************** BFILE via simple LZW decompression *******************/++#define DICTSIZE 4096+#define ASCIISIZE 96            /* ' ' - '~', '\n' */++struct BFILE_lzw {+  BFILE    mets;+  BFILE    *bfile;              /* underlying BFILE */+  int      unget;               /* storage for a single ungetb */+  char     *table[DICTSIZE];    /* dictionary */+  int      table_size;          /* next dictionary slot */+  char     *ptr;                /* pointer into output string */+  int      old;                 /* previous code word */+  int      ch;                  /* previous first character */+  char     buf[DICTSIZE+1];     /* buffer holding output string */+  int      rdstate;             /* state of 3 bytes to 2 codewords transducer */+  int      rdres;               /* saved transducer bits */+};++/* Get a code word.  It's 12 bits, so 2 codewords are spread over 3 bytes.+ * XXX This has 4096 hardcoded.+*/+int+getcode_lzw(struct BFILE_lzw *p)+{+  int r;++  if (p->rdstate == 0) {+    r = getb(p->bfile);+    if (r < 0)+      return -1;+    r |= getb(p->bfile) << 8;+    p->rdres = r >> 12;         /* save 4 bits */+    p->rdstate = 1;+    return r & 0xfff;+  } else {+    r = p->rdres;+    r |= getb(p->bfile) << 4;+    p->rdstate = 0;+    return r;+  }+}++char *+str_lzw(const char *s, int c)+{+  int l = strlen(s);+  char *p = MALLOC(l + 1 + 1);+  if (!p)+    memerr();+  strcpy(p, s);+  p[l] = c;+  p[l+1] = '\0';+  return p;+}++int+getb_lzw(BFILE *bp)+{+  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;+  CHECKBFILE(bp, getb_lzw);+  char *s;+  int c, n, l;++  /* Do we have an ungetb character? */+  if (p->unget >= 0) {+    c = p->unget;+    p->unget = -1;+    return c;+  }+  /* Are we in the middle of emitting a string? */+  if (p->ptr) {+    c = *p->ptr++;+    if (c) {+      //PRINT("c='%c'\n", c);+      return c;+    }+    p->ptr = 0;+  }+  n = getcode_lzw(p);+  if (n < 0)+    return -1;+  if (n >= DICTSIZE)+    ERR("getcode_lzw 1");+  s = p->table[n];+  if (!s) {+    char *os = p->table[p->old];+    strcpy(p->buf, os);+    l = strlen(os);+    p->buf[l++] = p->ch;+    p->buf[l] = '\0';+  } else {+    strcpy(p->buf, s);+  }+  p->ptr = p->buf;+  p->ch = p->buf[0];+  if (p->table_size < DICTSIZE) {+    p->table[p->table_size++] = str_lzw(p->table[p->old], p->ch);+  }+  p->old = n;+  return *p->ptr++;+}++void+ungetb_lzw(int c, BFILE *bp)+{+  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;+  CHECKBFILE(bp, getb_lzw);+  if (p->unget >= 0)+    ERR("ungetb_lzw");+  p->unget = c;+}++void+closeb_lzw(BFILE *bp)+{+  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;+  CHECKBFILE(bp, getb_lzw);+  int i;++  for (i = 0; i < DICTSIZE; i++) {+    if (p->table[i])+      FREE(p->table[i]);+  }+  closeb(p->bfile);+  FREE(p);+}++BFILE *+add_lzw_decompressor(BFILE *file)+{+  struct BFILE_lzw *p = MALLOC(sizeof(struct BFILE_lzw));+  int i;+  +  if (!p)+    memerr();+  memset(p, 0, sizeof(struct BFILE_lzw));+  p->mets.getb = getb_lzw;+  p->mets.ungetb = ungetb_lzw;+  p->mets.putb = 0;             /* no compressor yet. */+  p->mets.flushb = 0;+  p->mets.closeb = closeb_lzw;+  p->bfile = file;+  p->unget = -1;++  /* initialize dictionary with printable ASCII */+  for(i = 0; i < ASCIISIZE-1; i++) {+    p->table[i] = str_lzw("", i + ' ');+  }+  p->table[i++] = str_lzw("", '\n');+  p->table_size = i;++  /* set up decompressore state */+  p->old = getcode_lzw(p);+  strcpy(p->buf, p->table[p->old]);+  p->ch = p->buf[0];+  p->ptr = p->buf;+  +  return (BFILE *)p;+}++/***************** BFILE with UTF8 encode/decode *******************/++struct BFILE_utf8 {+  BFILE    mets;+  BFILE    *bfile;+  int      unget;+};++/* This is not right with WORD_SIZE==16 */+int+getb_utf8(BFILE *bp)+{+  struct BFILE_utf8 *p = (struct BFILE_utf8*)bp;+  CHECKBFILE(bp, getb_utf8);+  int c1, c2, c3, c4;++  /* Do we have an ungetb character? */+  if (p->unget >= 0) {+    c1 = p->unget;+    p->unget = -1;+    return c1;+  }+  c1 = getb(p->bfile);+  if (c1 < 0)+    return -1;+  if ((c1 & 0x80) == 0)+    return c1;+  c2 = getb(p->bfile);+  if (c2 < 0)+    return -1;+  if ((c1 & 0xe0) == 0xc0)+    return ((c1 & 0x1f) << 6) | (c2 & 0x3f);+  c3 = getb(p->bfile);+  if (c3 < 0)+    return -1;+  if ((c1 & 0xf0) == 0xe0)+    return ((c1 & 0x0f) << 12) | ((c2 & 0x3f) << 6) | (c3 & 0x3f);+  c4 = getb(p->bfile);+  if (c4 < 0)+    return -1;+  if ((c1 & 0xf8) == 0xf0)+    return ((c1 & 0x07) << 18) | ((c2 & 0x3f) << 12) | ((c3 & 0x3f) << 6) | (c4 & 0x3f);+  ERR("getb_utf8");+}++void+ungetb_utf8(int c, BFILE *bp)+{+  struct BFILE_utf8 *p = (struct BFILE_utf8*)bp;+  CHECKBFILE(bp, getb_utf8);+  if (p->unget >= 0)+    ERR("ungetb_utf8");+  p->unget = c;+}++void+putb_utf8(int c, BFILE *bp)+{+  struct BFILE_utf8 *p = (struct BFILE_utf8 *)bp;+  CHECKBFILE(bp, getb_utf8);+  if (c < 0)+    ERR("putb_utf8: < 0");+  if (c < 0x80) {+    putb(c, p->bfile);+    return;+  }+  if (c < 0x800) {+    putb(((c >> 6 )       ) | 0xc0, p->bfile);+    putb(((c      ) & 0x3f) | 0x80, p->bfile);+    return;+  }+  if (c < 0x10000) {+    putb(((c >> 12)       ) | 0xe0, p->bfile);+    putb(((c >> 6 ) & 0x3f) | 0x80, p->bfile);+    putb(((c      ) & 0x3f) | 0x80, p->bfile);+    return;+  }+  if (c < 0x110000) {+    putb(((c >> 18)       ) | 0xf0, p->bfile);+    putb(((c >> 12) & 0x3f) | 0x80, p->bfile);+    putb(((c >> 6 ) & 0x3f) | 0x80, p->bfile);+    putb(((c      ) & 0x3f) | 0x80, p->bfile);+    return;+  }+  ERR("putb_utf8");+}++void+flushb_utf8(BFILE *bp)+{+  struct BFILE_utf8 *p = (struct BFILE_utf8*)bp;+  CHECKBFILE(bp, getb_utf8);++  flushb(p->bfile);+}++void+closeb_utf8(BFILE *bp)+{+  struct BFILE_utf8 *p = (struct BFILE_utf8*)bp;+  CHECKBFILE(bp, getb_utf8);++  closeb(p->bfile);+  FREE(p);+}++BFILE *+add_utf8(BFILE *file)+{+  struct BFILE_utf8 *p = MALLOC(sizeof(struct BFILE_utf8));+  +  if (!p)+    memerr();+  p->mets.getb = getb_utf8;+  p->mets.ungetb = ungetb_utf8;+  p->mets.putb = putb_utf8;+  p->mets.flushb = flushb_utf8;+  p->mets.closeb = closeb_utf8;+  p->bfile = file;+  p->unget = -1;++  return (BFILE*)p;+}
+ src/runtime/config-c64.h view
@@ -0,0 +1,85 @@+/*+ * Various platform specific configuration.+ */++/*+ * Include stdio functions.+ * Without this none of the file I/O in System.IO is available.+ */+#define WANT_STDIO 0++/*+ * Include ops for floating point arithmetic.+ * Without this +,-,* etc will not be available for the Double type.+ */+#define WANT_FLOAT 0++/*+ * Include <math.h>+ * Without this, exp,sin, etc are not available.+ */+#define WANT_MATH 0++/*+ * Include MD5 checksumming code+ */+#define WANT_MD5 0++/*+ * Include profiling code+ */+#define WANT_TICK 0++/*+ * Process argc, argv+ */+#define WANT_ARGS 0++/*+ * Number of bits in a word.  Only 32 and 64 are supported.+ */+#define WORD_SIZE 16++/*+ * Find First Set+ * This macro must be defined.+ * It return the number of the least significant bit that is set.+ * Numberings starts from 1.  If no bit is set, it should return 0.+ */+/* #define FFS ffsl */++/*+ * This is the character used for comma-separation in printf.+ * Defaults to "'".+ */+/* #define PCOMMA "'" */+++/*+ * Get a raw input character.+ * If undefined, the default always returns -1+ */+/* #define GETRAW */+++/*+ * Get time since some epoch in milliseconds.+ */+/* #define GETTIMEMILLI */+++/*+ * The ERR macro should report an error and exit.+ * If not defined, a generic one will be used.+ */+/* #define ERR(s) */+/* #define ERR1(s,a) */++#define GCRED    0              /* do some reductions during GC */+#define FASTTAGS 1              /* compute tag by pointer subtraction */+#define INTTABLE 0              /* use fixed table of small INT nodes */+#define SANITY   0              /* do some sanity checks */+#define STACKOVL 1              /* check for stack overflow */++#define INLINE+#define NORETURN
src/runtime/config-micro-64.h view
@@ -21,6 +21,21 @@ #define WANT_MATH 0  /*+ * Include MD5 checksumming code+ */+#define WANT_MD5 0++/*+ * Include profiling code+ */+#define WANT_TICK 0++/*+ * Process argc, argv+ */+#define WANT_ARGS 0++/*  * Number of bits in a word.  Only 32 and 64 are supported.  */ #define WORD_SIZE 64@@ -31,7 +46,7 @@  * It return the number of the least significant bit that is set.  * Numberings starts from 1.  If no bit is set, it should return 0.  */-#define FFS ffsl+/* #define FFS ffsl */  /*  * This is the character used for comma-separation in printf.@@ -61,8 +76,7 @@ /* #define ERR1(s,a) */  #define GCRED    0              /* do some reductions during GC */-#define FASTTAGS 1              /* compute tag by pointer subtraction */-#define INTTABLE 1              /* use fixed table of small INT nodes */+#define FASTTAGS 0              /* compute tag by pointer subtraction */+#define INTTABLE 0              /* use fixed table of small INT nodes */ #define SANITY   0              /* do some sanity checks */ #define STACKOVL 0              /* check for stack overflow */-
src/runtime/config-mingw-64.h view
@@ -21,6 +21,16 @@ #define WANT_MATH 1  /*+ * Include MD5 checksumming code+ */+#define WANT_MD5 1++/*+ * Include profiling code+ */+#define WANT_TICK 1++/*  * Number of bits in a word.  Only 32 and 64 are supported.  */ #define WORD_SIZE 64
+ src/runtime/config-stm32f4.h view
@@ -0,0 +1,147 @@+/*+ * Various platform specific configuration.+ */++/*+ * Include stdio functions.+ * Without this none of the file I/O in System.IO is available.+ */+#define WANT_STDIO 0++/*+ * Include ops for floating point arithmetic.+ * Without this +,-,* etc will not be available for the Double type.+ */+#define WANT_FLOAT 1++/*+ * Include <math.h>+ * Without this, exp,sin, etc are not available.+ */+#define WANT_MATH 0++/*+ * Include MD5 checksumming code+ */+#define WANT_MD5 0++/*+ * Include profiling code+ */+#define WANT_TICK 0++/*+ * Process argc, argv+ */+#define WANT_ARGS 0++/*+ * Number of bits in a word.  Only 32 and 64 are supported.+ */+#define WORD_SIZE 32++/*+ * Find First Set+ * This macro must be defined.+ * It return the number of the least significant bit that is set.+ * Numberings starts from 1.  If no bit is set, it should return 0.+ */+// #define FFS++/*+ * This is the character used for comma-separation in printf.+ * Defaults to "'".+ */+/* #define PCOMMA "'" */+++/*+ * Get a raw input character.+ * If undefined, the default always returns -1+ */+/* #define GETRAW */+++/*+ * Get time since some epoch in milliseconds.+ */+/* #define GETTIMEMILLI */+++/*+ * The ERR macro should report an error and exit.+ * If not defined, a generic one will be used.+ */+/* #define ERR(s) */+/* #define ERR1(s,a) */++#define GCRED    0              /* do some reductions during GC */+#define FASTTAGS 1              /* compute tag by pointer subtraction */+#define INTTABLE 1              /* use fixed table of small INT nodes */+#define SANITY   1              /* do some sanity checks */+#define STACKOVL 1              /* check for stack overflow */++#define HEAP_CELLS 4000+#define STACK_SIZE 500++#include "stm32f4xx.h"++#define INITIALIZATION+void+main_setup(void)+{+  RCC->AHB1ENR |= RCC_AHB1ENR_GPIODEN; // Enable the clock of port D of the GPIO+	+  GPIOD->MODER |= GPIO_MODER_MODER12_0; // Green LED, set pin 12 as output+  GPIOD->MODER |= GPIO_MODER_MODER13_0; // Orange LED, set pin 13 as output+  GPIOD->MODER |= GPIO_MODER_MODER14_0; // Red LED, set pin 14 as output+  GPIOD->MODER |= GPIO_MODER_MODER15_0; // Blue LED, set pin 15 as output+}++void+set_led(int led, int on)+{+  GPIOD->BSRR = 1 << (12 + led + (on ? 0 : 16));+}++#pragma push+#pragma O0+void+busy_wait(volatile uint32_t cnt) {+  while(cnt--)+    _nop_();+}+#pragma pop++/* Instead of exit()ing, flash the green LED on exit code 0 else the red */+void+myexit(int n)+{+  set_led(0, 0);+  set_led(1, 0);+  set_led(2, 0);+  set_led(3, 0);+  int led = n ? 2 : 0;+  for(;;) {+    set_led(led, 1);+    busy_wait(1000000);+    set_led(led, 0);+    busy_wait(1000000);+  }+}+#define EXIT myexit++int+ffs(uintptr_t x)+{+  if (!x)+    return 0;+  x &= -x;                      /* keep lowest bit */+  int i = __CLZ(x);             /* count leading 0s */+  return 32 - i;                /* 31 leading zeros should return 1 */+}+#define FFS ffs++#define FFI_EXTRA \+  { "set_led",   (funptr_t)set_led,   FFI_IIV }, \+  { "busy_wait", (funptr_t)busy_wait, FFI_IV },
src/runtime/config-unix-64.h view
@@ -29,6 +29,11 @@ #define WANT_MD5 1  /*+ * Include profiling code+ */+#define WANT_TICK 1++/*  * Number of bits in a word.  Only 32 and 64 are supported.  */ #define WORD_SIZE 64@@ -134,18 +139,19 @@ {   int pid = (int)getpid();   char *tmp = getenv("TMPDIR");+  const size_t PID_DIGITS = 10;   if (!tmp)     tmp = "/tmp";-  char *s = malloc(strlen(tmp) + 1 + strlen(pre) + 5 + strlen(suf) + 1);+  char *s = malloc(strlen(tmp) + 1 + strlen(pre) + PID_DIGITS + strlen(suf) + 1);   /* This might loop forever.  See if I care. :) */   for(;;) {     strcpy(s, tmp);     strcat(s, "/");     strcat(s, pre);-    /* Insert 8 digits of the PID */-    char *p = s + strlen(s) + 10;+    /* Insert PID_DIGITS digits of the PID */+    char *p = s + strlen(s) + PID_DIGITS;     *p-- = 0;-    for(int i = 0; i < 10; i++) {+    for(int i = 0; i < PID_DIGITS; i++) {       *p-- = pid % 10 + '0';       pid /= 10;     }
src/runtime/config-windows-64.h view
@@ -26,6 +26,11 @@ #define WANT_MD5 1  /*+ * Include profiling code+ */+#define WANT_TICK 1++/*  * Number of bits in a word.  Only 32 and 64 are supported.  */ #define WORD_SIZE 64@@ -47,7 +52,7 @@ //#pragma warning(disable : 4996) #pragma intrinsic(_BitScanForward64) static inline int-FFS(int64_t arg)+ffs(int64_t arg) {   unsigned long r;   if (_BitScanForward64(&r, arg))@@ -55,6 +60,7 @@   else     return 0; }+#define FFS ffs  /*  * This is the character used for comma-separation in printf.
+ src/runtime/eval-c64.c view
@@ -0,0 +1,6 @@+/* Copyright 2023 Lennart Augustsson+ * See LICENSE file for full license.+ */+#include "config-c64.h"++#include "eval.c"
+ src/runtime/eval-micro-64.c view
@@ -0,0 +1,6 @@+/* Copyright 2023 Lennart Augustsson+ * See LICENSE file for full license.+ */+#include "config-micro-64.h"++#include "eval.c"
+ src/runtime/eval-stm32f4.c view
@@ -0,0 +1,6 @@+/* Copyright 2023 Lennart Augustsson+ * See LICENSE file for full license.+ */+#include "config-stm32f4.h"++#include "eval.c"
src/runtime/eval.c view
@@ -18,2835 +18,3039 @@ #include "md5.h" #endif -#define VERSION "v6.1\n"--typedef intptr_t value_t;       /* Make value the same size as pointers, since they are in a union */-#define PRIvalue PRIdPTR-typedef uintptr_t uvalue_t;     /* Make unsigned value the same size as pointers, since they are in a union */-#define PRIuvalue PRIuPTR-typedef uintptr_t heapoffs_t;   /* Heap offsets */-#define PRIheap PRIuPTR-typedef uintptr_t tag_t;        /* Room for tag, low order bit indicates AP/not-AP */-typedef intptr_t stackptr_t;    /* Index into stack */--typedef uintptr_t counter_t;    /* Statistics counter, can be smaller since overflow doesn't matter */-#define PRIcounter PRIuPTR-typedef uintptr_t bits_t;       /* One word of bits */-#if WORD_SIZE == 64-typedef double flt_t;-#else-typedef float flt_t;-#endif--/* We cast all FFI functions to this type.  It's reasonably portable */-typedef void (*funptr_t)(void);--#if !defined(MALLOC)-#define MALLOC malloc-#endif--#if !defined(FREE)-#define FREE free-#endif--#if !defined(EXIT)-#define EXIT exit-#endif--#if !defined(PRINT)-#define PRINT printf-#endif--#if !defined(PCOMMA)-#define PCOMMA "'"-#endif  /* !defined(PCOMMA) */--#if !defined(GETRAW)-int GETRAW(void) { return -1; }-#endif  /* !defined(getraw) */--#if !defined(GETTIMEMILLI)-uint64_t GETTIMEMILLI(void) { return 0; }-#endif  /* !define(GETTIMEMILLI) */--#if !defined(TMPNAME)-char* TMPNAME(const char* pre, const char* post) {-  char *s = MALLOC(strlen(pre) + 3 + strlen(post) + 1);-  strcpy(s, pre);-  strcat(s, "TMP");-  strcat(s, post);-  return s;-}-#endif--// #if !defined(MALLOC)-// #define MALLOC malloc-// #endif--#if !defined(INLINE)-#define INLINE inline-#endif  /* !define(INLINE) */--#if !defined(NORETURN)-#define NORETURN __attribute__ ((noreturn))-#endif /* !defined(NORETURN) */--value_t-iswindows(void)-{-#if defined(ISWINDOWS)-  return 1;-#else-  return 0;-#endif-}--/***************************************/--/* Keep permanent nodes for LOW_INT <= i < HIGH_INT */-#define LOW_INT (-10)-#define HIGH_INT 256--#include "config.h"--#if !defined(HEAP_CELLS)-#define HEAP_CELLS 50000000-#endif--#if !defined(STACK_SIZE)-#define STACK_SIZE 100000-#endif--#if !defined(ERR)-#if WANT_STDIO-#define ERR(s)    do { fprintf(stderr,"ERR: "s"\n");   EXIT(1); } while(0)-#define ERR1(s,a) do { fprintf(stderr,"ERR: "s"\n",a); EXIT(1); } while(0)-#else  /* WANT_STDIO */-#define ERR(s) EXIT(1)-#define ERR1(s,a) EXIT(1)-#endif  /* WANT_STDIO */-#endif  /* !define(ERR) */--enum node_tag { T_FREE, T_IND, T_AP, T_INT, T_DBL, T_PTR, T_BADDYN, T_ARR,-                T_S, T_K, T_I, T_B, T_C,-                T_A, T_Y, T_SS, T_BB, T_CC, T_P, T_R, T_O, T_U, T_Z,-                T_K2, T_K3, T_K4, T_CCB,-                T_ADD, T_SUB, T_MUL, T_QUOT, T_REM, T_SUBR, T_UQUOT, T_UREM, T_NEG,-                T_AND, T_OR, T_XOR, T_INV, T_SHL, T_SHR, T_ASHR,-                T_EQ, T_NE, T_LT, T_LE, T_GT, T_GE, T_ULT, T_ULE, T_UGT, T_UGE,-                T_PEQ, T_PNULL, T_PADD, T_PSUB,-                T_TOPTR, T_TOINT, T_TODBL,-#if WANT_FLOAT-                T_FADD, T_FSUB, T_FMUL, T_FDIV, T_FNEG, T_ITOF,-                T_FEQ, T_FNE, T_FLT, T_FLE, T_FGT, T_FGE, T_FSHOW, T_FREAD,-#endif-                T_ARR_ALLOC, T_ARR_SIZE, T_ARR_READ, T_ARR_WRITE, T_ARR_EQ,-                T_ERROR, T_NODEFAULT, T_NOMATCH, T_SEQ, T_EQUAL, T_COMPARE, T_RNF,-                T_TICK,-                T_IO_BIND, T_IO_THEN, T_IO_RETURN,-                T_IO_SERIALIZE, T_IO_DESERIALIZE,-                T_IO_STDIN, T_IO_STDOUT, T_IO_STDERR, T_IO_GETARGS,-                T_IO_PERFORMIO, T_IO_GETTIMEMILLI, T_IO_PRINT, T_IO_CATCH,-                T_IO_CCALL, T_DYNSYM,-                T_NEWCASTRINGLEN, T_PEEKCASTRING, T_PEEKCASTRINGLEN,-                T_STR,-                T_LAST_TAG,-};-#if 0-static const char* tag_names[] = {-  "FREE", "IND", "AP", "INT", "DBL", "PTR", "BADDYN", "ARR",-  "S", "K", "I", "B", "C",-  "A", "Y", "SS", "BB", "CC", "P", "R", "O", "U", "Z",-  "ADD", "SUB", "MUL", "QUOT", "REM", "SUBR", "UQUOT", "UREM", "NEG",-  "AND", "OR", "XOR", "INV", "SHL", "SHR", "ASHR",-  "EQ", "NE", "LT", "LE", "GT", "GE", "ULT", "ULE", "UGT", "UGE",-  "TOPTR", "TOINT", "TODBL",-#if WANT_FLOAT-  "FADD", "FSUB", "FMUL", "FDIV", "FNEG", "ITOF",-  "FEQ", "FNE", "FLT", "FLE", "FGT", "FGE", "FSHOW", "FREAD",-#endif-  "ARR_ALLOC", "ARR_SIZE", "ARR_READ", "ARR_WRITE", "ARR_EQ",-  "ERROR", "NODEFAULT", "NOMATCH", "SEQ", "EQUAL", "COMPARE", "RNF",-  "TICK",-  "IO_BIND", "IO_THEN", "IO_RETURN",-  "IO_SERIALIZE", "IO_DESERIALIZE",-  "IO_STDIN", "IO_STDOUT", "IO_STDERR", "IO_GETARGS",-  "IO_PERFORMIO", "IO_GETTIMEMILLI", "IO_PRINT", "IO_CATCH",-  "IO_CCALL", "DYNSYM",-  "NEWCASTRINGLEN", "PEEKCASTRING", "PEEKCASTRINGLEN",-  "STR",-  "LAST_TAG",-};-#endif--struct ioarray;--typedef struct node {-  union {-    struct node *uufun;-    tag_t        uutag;             /* LSB=1 indicates that this is a tag, LSB=0 that this is a T_AP node */-  } ufun;-  union {-    struct node    *uuarg;-    value_t         uuvalue;-    flt_t           uufloatvalue;-    const char     *uustring;-    void           *uuptr;-    struct ioarray *uuarray;-  } uarg;-} node;-typedef struct node* NODEPTR;-#define NIL 0-#define HEAPREF(i) &cells[(i)]-#define GETTAG(p) ((p)->ufun.uutag & 1 ? (int)((p)->ufun.uutag >> 1) : T_AP)-#define SETTAG(p,t) do { if (t != T_AP) (p)->ufun.uutag = ((t) << 1) + 1; } while(0)-#define GETVALUE(p) (p)->uarg.uuvalue-#define GETDBLVALUE(p) (p)->uarg.uufloatvalue-#define SETVALUE(p,v) (p)->uarg.uuvalue = v-#define SETDBLVALUE(p,v) (p)->uarg.uufloatvalue = v-#define FUN(p) (p)->ufun.uufun-#define ARG(p) (p)->uarg.uuarg-#define STR(p) (p)->uarg.uustring-#define PTR(p) (p)->uarg.uuptr-#define ARR(p) (p)->uarg.uuarray-#define INDIR(p) ARG(p)-#define NODE_SIZE sizeof(node)-#define ALLOC_HEAP(n) do { cells = MALLOC(n * sizeof(node)); memset(cells, 0x55, n * sizeof(node)); } while(0)-#define LABEL(n) ((heapoffs_t)((n) - cells))-node *cells;                 /* All cells */--/*- * Arrays are allocated with MALLOC()/FREE().- * During GC they are marked, and all elements in the array are- * recursively marked.- * At the end of the the mark phase there is a scan of all- * arrays, and the unmarked ones are freed.- */-struct ioarray {-  struct ioarray *next;         /* all ioarrays are linked together */-  int marked;                   /* marked during GC */-  size_t size;                  /* number of elements in the array */-  NODEPTR array[1];             /* actual size may be bigger */-};-struct ioarray *array_root = 0;--counter_t num_reductions = 0;-counter_t num_alloc;-counter_t num_gc = 0;-uintptr_t gc_mark_time = 0;-uintptr_t run_time = 0;--NODEPTR *stack;-stackptr_t stack_ptr = -1;-#if STACKOVL-#define PUSH(x) do { if (stack_ptr >= stack_size-1) ERR("stack overflow"); stack[++stack_ptr] = (x); } while(0)-#else  /* STACKOVL */-#define PUSH(x) do {                                                        stack[++stack_ptr] = (x); } while(0)-#endif  /* STACKOVL */-#define TOP(n) stack[stack_ptr - (n)]-#define POP(n) stack_ptr -= (n)-#define POPTOP() stack[stack_ptr--]-#define GCCHECK(n) gc_check((n))--heapoffs_t heap_size = HEAP_CELLS; /* number of heap cells */-heapoffs_t heap_start;             /* first location in heap that needs GC */-stackptr_t stack_size = STACK_SIZE;--counter_t num_marked;-counter_t max_num_marked = 0;-counter_t num_free;-counter_t num_arr_alloc;-counter_t num_arr_free;--#define BITS_PER_WORD (sizeof(bits_t) * 8)-bits_t *free_map;             /* 1 bit per node, 0=free, 1=used */-heapoffs_t free_map_nwords;-heapoffs_t next_scan_index;--int want_gc_red = 0;--NORETURN-void-memerr(void)-{-  ERR("Out of memory");-  EXIT(1);-}--struct ioarray*-arr_alloc(size_t sz, NODEPTR e)-{-  struct ioarray *arr = MALLOC(sizeof(struct ioarray) + (sz-1) * sizeof(NODEPTR));-  if (!arr)-    memerr();-  arr->next = array_root;-  array_root = arr;-  arr->marked = 0;-  arr->size = sz;-  for(size_t i = 0; i < sz; i++)-    arr->array[i] = e;-  //PRINT("arr_alloc(%d, %p) = %p\n", (int)sz, e, arr);-  num_arr_alloc++;-  return arr;-}--/***************** BFILE *******************/--/* BFILE will have different implementations, they all have these methods */-typedef struct BFILE {-  int (*getb)(struct BFILE*);-  void (*ungetb)(int c, struct BFILE*);-  void (*closeb)(struct BFILE*);-} BFILE;--/*** BFILE from static buffer ***/-struct BFILE_buffer {-  BFILE    mets;-  size_t   b_size;-  size_t   b_pos;-  uint8_t  *b_buffer;-};--int-getb_buf(BFILE *bp)-{-  struct BFILE_buffer *p = (struct BFILE_buffer *)bp;-  if (p->b_pos >= p->b_size)-    return -1;-  return p->b_buffer[p->b_pos++];-}--void-ungetb_buf(int c, BFILE *bp)-{-  struct BFILE_buffer *p = (struct BFILE_buffer *)bp;-  if (p->b_pos == 0)-    ERR("ungetb");-  p->b_buffer[--p->b_pos] = (uint8_t)c;-}--void-closeb_buf(BFILE *bp)-{-  (void)bp;                     /* shut up warning */-}--#if WANT_STDIO-/*** BFILE via FILE ***/-struct BFILE_file {-  BFILE    mets;-  FILE    *file;-};--int-getb_file(BFILE *bp)-{-  struct BFILE_file *p = (struct BFILE_file *)bp;-  return fgetc(p->file);-}--void-ungetb_file(int c, BFILE *bp)-{-  struct BFILE_file *p = (struct BFILE_file *)bp;-  ungetc(c, p->file);-}--void-closeb_file(BFILE *bp)-{-  struct BFILE_file *p = (struct BFILE_file *)bp;-  FREE(p);-}--BFILE *-openb_FILE(FILE *f)-{-  struct BFILE_file *p = MALLOC(sizeof (struct BFILE_file));-  if (!p)-    memerr();-  p->mets.getb   = getb_file;-  p->mets.ungetb = ungetb_file;-  p->mets.closeb = closeb_file;-  p->file = f;-  return (BFILE*)p;-}-#endif--/*** BFILE via simple LZW decompression ***/--#define DICTSIZE 4096-#define ASCIISIZE 96            /* ' ' - '~', '\n' */--struct BFILE_lzw {-  BFILE    mets;-  BFILE    *bfile;              /* underlying BFILE */-  int      unget;               /* storage for a single ungetb */-  char     *table[DICTSIZE];    /* dictionary */-  int      table_size;          /* next dictionary slot */-  char     *ptr;                /* pointer into output string */-  int      old;                 /* previous code word */-  int      ch;                  /* previous first character */-  char     buf[DICTSIZE+1];     /* buffer holding output string */-  int      rdstate;             /* state of 3 bytes to 2 codewords transducer */-  int      rdres;               /* saved transducer bits */-};--/* Get a code word.  It's 12 bits, so 2 codewords are spread over 3 bytes.- * XXX This has 4096 hardcoded.-*/-int-getcode_lzw(struct BFILE_lzw *p)-{-  int r;--  if (p->rdstate == 0) {-    r = p->bfile->getb(p->bfile);-    if (r < 0)-      return -1;-    r |= p->bfile->getb(p->bfile) << 8;-    p->rdres = r >> 12;         /* save 4 bits */-    p->rdstate = 1;-    return r & 0xfff;-  } else {-    r = p->rdres;-    r |= p->bfile->getb(p->bfile) << 4;-    p->rdstate = 0;-    return r;-  }-}--char *-str_lzw(const char *s, int c)-{-  int l = strlen(s);-  char *p = MALLOC(l + 1 + 1);-  if (!p)-    memerr();-  strcpy(p, s);-  p[l] = c;-  p[l+1] = '\0';-  return p;-}--int-getb_lzw(BFILE *bp)-{-  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;-  char *s;-  int c, n;--  /* Do we have an ungetb character? */-  if (p->unget) {-    c = p->unget;-    p->unget = 0;-    return c;-  }-  /* Are we in the middle of emitting a string? */-  if (p->ptr) {-    c = *p->ptr++;-    if (c) {-      //PRINT("c='%c'\n", c);-      return c;-    }-    p->ptr = 0;-  }-  n = getcode_lzw(p);-  if (n < 0)-    return -1;-  if (n >= DICTSIZE)-    ERR("getcode_lzw 1");-  s = p->table[n];-  if (!s) {-    char *os = p->table[p->old];-    strcpy(p->buf, os);-    int l = strlen(os);-    p->buf[l++] = p->ch;-    p->buf[l] = '\0';-  } else {-    strcpy(p->buf, s);-  }-  p->ptr = p->buf;-  p->ch = p->buf[0];-  if (p->table_size < DICTSIZE) {-    p->table[p->table_size++] = str_lzw(p->table[p->old], p->ch);-  }-  p->old = n;-  return *p->ptr++;-}--void-ungetb_lzw(int c, BFILE *bp)-{-  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;-  if (p->unget)-    ERR("ungetb_lzw");-  p->unget = c;-}--void-closeb_lzw(BFILE *bp)-{-  struct BFILE_lzw *p = (struct BFILE_lzw*)bp;--  for (int i = 0; i < DICTSIZE; i++) {-    if (p->table[i])-      FREE(p->table[i]);-  }-  p->bfile->closeb(p->bfile);-  FREE(p);-}--BFILE *-add_lzw_decompressor(BFILE *file)-{-  struct BFILE_lzw *p = calloc(1, sizeof(struct BFILE_lzw));-  int i;-  -  if (!p)-    memerr();-  p->mets.getb = getb_lzw;-  p->mets.ungetb = ungetb_lzw;-  p->mets.closeb = closeb_lzw;-  p->bfile = file;--  /* initialize dictionary with printable ASCII */-  for(i = 0; i < ASCIISIZE-1; i++) {-    p->table[i] = str_lzw("", i + ' ');-  }-  p->table[i++] = str_lzw("", '\n');-  p->table_size = i;--  /* set up decompressore state */-  p->old = getcode_lzw(p);-  strcpy(p->buf, p->table[p->old]);-  p->ch = p->buf[0];-  p->ptr = p->buf;-  -  return (BFILE *)p;-}--/*****************************************************************************/--struct tick_entry {-  const char *tick_name;-  counter_t tick_count;-} *tick_table = 0;-size_t tick_table_size;-size_t tick_index;--/* Allocate a new tick table entry and return the index. */-size_t-add_tick_table(const char *name)-{-  if (!tick_table) {-    tick_table_size = 100;-    tick_table = malloc(tick_table_size * sizeof(struct tick_entry));-    if (!tick_table)-      memerr();-    tick_index = 0;-  }-  if (tick_index >= tick_table_size) {-    tick_table_size *= 2;-    tick_table = realloc(tick_table, tick_table_size * sizeof(struct tick_entry));-    if (!tick_table)-      memerr();-  }-  tick_table[tick_index].tick_name = name;-  tick_table[tick_index].tick_count = 0;-  return tick_index++;-}---/* Called with the tick index. */-static inline void-dotick(value_t i)-{-  tick_table[i].tick_count++;-}--void-dump_tick_table(FILE *f)-{-  if (!tick_table) {-    fprintf(f, "Tick table empty\n");-    return;-  }-  for (size_t i = 0; i < tick_index; i++) {-    counter_t n = tick_table[i].tick_count;-    if (n)-      fprintf(f, "%-60s %10"PRIcounter"\n", tick_table[i].tick_name, n);-  }-}--/*****************************************************************************/--struct handler {-  jmp_buf         hdl_buf;      /* env storage */-  struct handler *hdl_old;      /* old handler */-  stackptr_t      hdl_stack;    /* old stack pointer */-  NODEPTR         hdl_exn;      /* used temporarily to pass the exception value */-} *cur_handler = 0;--/* Set FREE bit to 0 */-static INLINE void mark_used(NODEPTR n)-{-  heapoffs_t i = LABEL(n);-  if (i < heap_start)-    return;-#if SANITY-  if (i >= free_map_nwords * BITS_PER_WORD) ERR("mark_used");-#endif-  free_map[i / BITS_PER_WORD] &= ~(1ULL << (i % BITS_PER_WORD));-}--/* Test if FREE bit is 0 */-static INLINE int is_marked_used(NODEPTR n)-{-  heapoffs_t i = LABEL(n);-  if (i < heap_start)-    return 1;-#if SANITY-  if (i >= free_map_nwords * BITS_PER_WORD) ERR("is_marked_used");;-#endif-  return (free_map[i / BITS_PER_WORD] & (1ULL << (i % BITS_PER_WORD))) == 0;-}--static INLINE void mark_all_free(void)-{-  memset(free_map, ~0, free_map_nwords * sizeof(bits_t));-  next_scan_index = heap_start;-}--int glob_argc;-char **glob_argv;--int verbose = 0;--static INLINE NODEPTR-alloc_node(enum node_tag t)-{-#if SANITY-  if (num_free <= 0)-    ERR("alloc_node");-#endif--  heapoffs_t i = next_scan_index / BITS_PER_WORD;-  int k;                        /* will contain bit pos + 1 */-  for(;;) {-    heapoffs_t word = free_map[i];-    k = FFS(word);-    if (k)-      break;-    i++;-#if SANITY-    if (i >= free_map_nwords) {-#if 0-      fprintf(stderr, "wordsize=%d, num_free=%u next_scan_index=%u i=%u free_map_nwords=%u\n", (int)BITS_PER_WORD,-              (unsigned int)num_free, (unsigned int)next_scan_index, (unsigned int)i, (unsigned int)free_map_nwords);-#endif-      ERR("alloc_node: free_map");-    }-#endif-  }-  heapoffs_t pos = i * BITS_PER_WORD + k - 1; /* first free node */-  NODEPTR n = HEAPREF(pos);-  mark_used(n);-  next_scan_index = pos;--  SETTAG(n, t);-  num_alloc++;-  num_free--;-  return n;-}--static INLINE NODEPTR-new_ap(NODEPTR f, NODEPTR a)-{-  NODEPTR n = alloc_node(T_AP);-  FUN(n) = f;-  ARG(n) = a;-  return n;-}--/* Needed during reduction */-NODEPTR intTable[HIGH_INT - LOW_INT];-NODEPTR combFalse, combTrue, combUnit, combCons, combPair;-NODEPTR combCC, combZ, combIOBIND;-NODEPTR combLT, combEQ, combGT;--/* One node of each kind for primitives, these are never GCd. */-/* We use linear search in this, because almost all lookups- * are among the combinators.- */-struct {-  char *name;-  enum node_tag tag;-  enum node_tag flipped;        /* What should (C op) reduce to? defaults to T_FREE */-  NODEPTR node;-} primops[] = {-  /* combinators */-  /* sorted by frequency in a typical program */-  { "B", T_B },-  { "O", T_O },-  { "K", T_K },-  { "C'", T_CC },-  { "C", T_C },-  { "A", T_A },-  { "S'", T_SS },-  { "P", T_P },-  { "R", T_R },-  { "I", T_I },-  { "S", T_S },-  { "U", T_U },-  { "Y", T_Y },-  { "B'", T_BB },-  { "Z", T_Z },-  { "K2", T_K2 },-  { "K3", T_K3 },-  { "K4", T_K4 },-  { "C'B", T_CCB },-/* primops */-  { "+", T_ADD, T_ADD },-  { "-", T_SUB, T_SUBR },-  { "*", T_MUL, T_MUL },-  { "quot", T_QUOT },-  { "rem", T_REM },-  { "uquot", T_UQUOT },-  { "urem", T_UREM },-  { "subtract", T_SUBR, T_SUB },-  { "neg", T_NEG },-  { "and", T_AND, T_AND },-  { "or", T_OR, T_OR },-  { "xor", T_XOR, T_XOR },-  { "inv", T_INV },-  { "shl", T_SHL },-  { "shr", T_SHR },-  { "ashr", T_ASHR },-#if WANT_FLOAT-  { "f+" , T_FADD, T_FADD},-  { "f-" , T_FSUB, T_FSUB},-  { "f*" , T_FMUL, T_FMUL},-  { "f/", T_FDIV},-  { "fneg", T_FNEG},-  { "itof", T_ITOF},-  { "f==", T_FEQ, T_FEQ},-  { "f/=", T_FNE, T_FNE},-  { "f<", T_FLT},-  { "f<=", T_FLE},-  { "f>", T_FGT},-  { "f>=", T_FGE},-  { "fshow", T_FSHOW},-  { "fread", T_FREAD},-#endif  /* WANT_FLOAT */-  { "ord", T_I },-  { "chr", T_I },-  { "==", T_EQ, T_EQ },-  { "/=", T_NE, T_NE },-  { "<", T_LT, T_GT },-  { "u<", T_ULT, T_UGT },-  { "u<=", T_ULE, T_UGE },-  { "u>", T_UGT, T_ULT },-  { "u>=", T_UGE, T_ULE },-  { "<=", T_LE, T_GE },-  { ">", T_GT, T_LT },-  { ">=", T_GE, T_LE },-  { "p==", T_PEQ, T_PEQ },-  { "pnull", T_PNULL },-  { "pcast", T_I },-  { "p+", T_PADD },-  { "p-", T_PSUB },-  { "seq", T_SEQ },-  { "error", T_ERROR },-  { "noDefault", T_NODEFAULT },-  { "noMatch", T_NOMATCH },-  { "equal", T_EQUAL, T_EQUAL },-  { "sequal", T_EQUAL, T_EQUAL },-  { "compare", T_COMPARE },-  { "scmp", T_COMPARE },-  { "icmp", T_COMPARE },-  { "rnf", T_RNF },-  /* IO primops */-  { "IO.>>=", T_IO_BIND },-  { "IO.>>", T_IO_THEN },-  { "IO.return", T_IO_RETURN },-  { "IO.serialize", T_IO_SERIALIZE },-  { "IO.print", T_IO_PRINT },-  { "IO.deserialize", T_IO_DESERIALIZE },-  { "IO.stdin", T_IO_STDIN },-  { "IO.stdout", T_IO_STDOUT },-  { "IO.stderr", T_IO_STDERR },-  { "IO.getArgs", T_IO_GETARGS },-  { "IO.getTimeMilli", T_IO_GETTIMEMILLI },-  { "IO.performIO", T_IO_PERFORMIO },-  { "IO.catch", T_IO_CATCH },-  { "A.alloc", T_ARR_ALLOC },-  { "A.size", T_ARR_SIZE },-  { "A.read", T_ARR_READ },-  { "A.write", T_ARR_WRITE },-  { "A.==", T_ARR_EQ },-  { "dynsym", T_DYNSYM },-  { "newCAStringLen", T_NEWCASTRINGLEN },-  { "peekCAString", T_PEEKCASTRING },-  { "peekCAStringLen", T_PEEKCASTRINGLEN },-  { "toPtr", T_TOPTR },-  { "toInt", T_TOINT },-  { "toDbl", T_TODBL },-};--enum node_tag flip_ops[T_LAST_TAG];--void-init_nodes(void)-{-  ALLOC_HEAP(heap_size);-  free_map_nwords = (heap_size + BITS_PER_WORD - 1) / BITS_PER_WORD; /* bytes needed for free map */-  free_map = MALLOC(free_map_nwords * sizeof(bits_t));-  if (!free_map)-    memerr();--  /* Set up permanent nodes */-  heap_start = 0;-#if !FASTTAGS-  for (int j = 0; j < sizeof primops / sizeof primops[0]; j++) {-    NODEPTR n = HEAPREF(heap_start++);-    primops[j].node = n;-    //MARK(n) = MARKED;-    SETTAG(n, primops[j].tag);-    switch (primops[j].tag) {-    case T_K: combFalse = n; break;-    case T_A: combTrue = n; break;-    case T_I: combUnit = n; break;-    case T_O: combCons = n; break;-    case T_P: combPair = n; break;-    case T_CC: combCC = n; break;-    case T_Z: combZ = n; break;-    case T_IO_BIND: combIOBIND = n; break;-#if WANT_STDIO-    case T_IO_STDIN:  SETTAG(n, T_PTR); PTR(n) = stdin;  break;-    case T_IO_STDOUT: SETTAG(n, T_PTR); PTR(n) = stdout; break;-    case T_IO_STDERR: SETTAG(n, T_PTR); PTR(n) = stderr; break;-#endif  /* WANT_STDIO */-    default:-      break;-    }-  }-#else-  for(enum node_tag t = T_FREE; t < T_LAST_TAG; t++) {-    NODEPTR n = HEAPREF(heap_start++);-    SETTAG(n, t);-    switch (t) {-    case T_K: combFalse = n; break;-    case T_A: combTrue = n; break;-    case T_I: combUnit = n; break;-    case T_O: combCons = n; break;-    case T_P: combPair = n; break;-    case T_CC: combCC = n; break;-    case T_Z: combZ = n; break;-    case T_IO_BIND: combIOBIND = n; break;-#if WANT_STDIO-    case T_IO_STDIN:  SETTAG(n, T_PTR); PTR(n) = stdin;  break;-    case T_IO_STDOUT: SETTAG(n, T_PTR); PTR(n) = stdout; break;-    case T_IO_STDERR: SETTAG(n, T_PTR); PTR(n) = stderr; break;-#endif-    default:-      break;-    }-    for (int j = 0; j < sizeof primops / sizeof primops[0];j++) {-      if (primops[j].tag == t) {-        primops[j].node = n;-      }-    }-  }-#endif-  for (unsigned int j = 0; j < sizeof primops / sizeof primops[0]; j++) {-    flip_ops[primops[j].tag] = primops[j].flipped;-  }--  /* The representation of the constructors of-   *  data Ordering = LT | EQ | GT-   * do not have single constructors.-   * But we can make compound one, since they are irreducible.-   */-#define NEWAP(c, f, a) do { NODEPTR n = HEAPREF(heap_start++); SETTAG(n, T_AP); FUN(n) = (f); ARG(n) = (a); (c) = n;} while(0)-  NEWAP(combLT, combZ,     combFalse);  /* Z B */-  NEWAP(combEQ, combFalse, combFalse);  /* K K */-  NEWAP(combGT, combFalse, combTrue);   /* K A */-#undef NEWAP--#if INTTABLE-  /* Allocate permanent Int nodes */-  for (int i = LOW_INT; i < HIGH_INT; i++) {-    NODEPTR n = HEAPREF(heap_start++);-    intTable[i - LOW_INT] = n;-    SETTAG(n, T_INT);-    SETVALUE(n, i);-  }-#endif--  /* Round up heap_start to the next bitword boundary to avoid the permanent nodes. */-  heap_start = (heap_start + BITS_PER_WORD - 1) / BITS_PER_WORD * BITS_PER_WORD;--  mark_all_free();--  num_free = heap_size - heap_start;-}--#if GCRED-int red_a, red_k, red_i, red_int, red_flip;-#endif--//counter_t mark_depth;--/* Mark all used nodes reachable from *np */-void-mark(NODEPTR *np)-{-  NODEPTR n;-#if GCRED-  value_t i;-#endif-  enum node_tag tag;--  //  mark_depth++;-  //  if (mark_depth % 10000 == 0)-  //    PRINT("mark depth %"PRIcounter"\n", mark_depth);-  top:-  n = *np;-  tag = GETTAG(n);-  if (tag == T_IND) {-#if SANITY-    int loop = 0;-    /* Skip indirections, and redirect start pointer */-    while ((tag = GETTAG(n)) == T_IND) {-      //      PRINT("*"); fflush(stdout);-      n = INDIR(n);-      if (loop++ > 10000000) {-        //PRINT("%p %p %p\n", n, INDIR(n), INDIR(INDIR(n)));-        ERR("IND loop");-      }-    }-    //    if (loop)-    //      PRINT("\n");-#else  /* SANITY */-    while ((tag = GETTAG(n)) == T_IND) {-      n = INDIR(n);-    }-#endif  /* SANITY */-    *np = n;-  }-  if (is_marked_used(n)) {-    //    mark_depth--;-    return;-  }-  num_marked++;-  mark_used(n);-#if GCRED-  if (want_gc_red) {-    /* This is really only fruitful just after parsing.  It can be removed. */-    if (tag == T_AP && GETTAG(FUN(n)) == T_AP && GETTAG(FUN(FUN(n))) == T_A) {-      /* Do the A x y --> y reduction */-      NODEPTR y = ARG(n);-      SETTAG(n, T_IND);-      INDIR(n) = y;-      red_a++;-      goto top;-    }-#if 0-    /* This never seems to happen */-    if (tag == T_AP && GETTAG(FUN(n)) == T_AP && GETTAG(FUN(FUN(n))) == T_K) {-      /* Do the K x y --> x reduction */-      NODEPTR x = ARG(FUN(n));-      SETTAG(n, T_IND);-      INDIR(n) = x;-      red_k++;-      goto top;-    }-#endif  /* 0 */-    if (tag == T_AP && GETTAG(FUN(n)) == T_I) {-      /* Do the I x --> x reduction */-      NODEPTR x = ARG(n);-      SETTAG(n, T_IND);-      INDIR(n) = x;-      red_i++;-      goto top;-    }-#if 1-    /* This is broken.-     * Probably because it can happen in the middle of the C node.-     */-    if (tag == T_AP && GETTAG(FUN(n)) == T_C) {-      NODEPTR q = ARG(n);-      enum node_tag tt, tf;-      while ((tt = GETTAG(q)) == T_IND)-        q = INDIR(q);-      if ((tf = flip_ops[tt])) {-        /* Do the C op --> flip_op reduction */-        // PRINT("%s -> %s\n", tag_names[tt], tag_names[tf]);-        SETTAG(n, T_IND);-        INDIR(n) = HEAPREF(tf);-        red_flip++;-        return;-        goto top;-      }-    }-  }-#endif-#if INTTABLE-  if (tag == T_INT && LOW_INT <= (i = GETVALUE(n)) && i < HIGH_INT) {-    SETTAG(n, T_IND);-    INDIR(n) = intTable[i - LOW_INT];-    red_int++;-    goto top;-  }-#endif  /* INTTABLE */-#endif  /* GCRED */-  if (tag == T_AP) {-#if 1-    mark(&FUN(n));-    //mark(&ARG(n));-    np = &ARG(n);-    goto top;                   /* Avoid tail recursion */-#else-    mark(&ARG(n));-    np = &FUN(n);-    goto top;                   /* Avoid tail recursion */-#endif-  } else if (tag == T_ARR) {-    struct ioarray *arr = ARR(n);-    /* It really should never happen that we encounter a marked-     * array, since the parent is marked.-     */-    if (!arr->marked) {-      arr->marked = 1;-      for(size_t i = 0; i < arr->size; i++)-        mark(&arr->array[i]);-    }-  }-}--/* Perform a garbage collection:-   - First mark from all roots; roots are on the stack.-*/-void-gc(void)-{-  num_gc++;-  num_marked = 0;-#if WANT_STDIO-  if (verbose > 1)-    PRINT("gc mark\n");-#endif-  gc_mark_time -= GETTIMEMILLI();-  mark_all_free();-  //  mark_depth = 0;-  for (stackptr_t i = 0; i <= stack_ptr; i++)-    mark(&stack[i]);-  gc_mark_time += GETTIMEMILLI();--  if (num_marked > max_num_marked)-    max_num_marked = num_marked;-  num_free = heap_size - heap_start - num_marked;-  if (num_free < heap_size / 50)-    ERR("heap exhausted");--  for (struct ioarray **arrp = &array_root; *arrp; ) {-    struct ioarray *arr = *arrp;-    if (arr->marked) {-      arr->marked = 0;-      arrp = &arr->next;-    } else {-      *arrp = arr->next;        /* unlink */-      num_arr_free++;-      FREE(arr);                /* and FREE */-    }-  }--#if WANT_STDIO-  if (verbose > 1) {-    PRINT("gc done, %"PRIcounter" free\n", num_free);-    //PRINT(" GC reductions A=%d, K=%d, I=%d, int=%d flip=%d\n", red_a, red_k, red_i, red_int, red_flip);-  }-#endif  /* !WANT_STDIO */-}--/* Check that there are k nodes available, if not then GC. */-static INLINE void-gc_check(size_t k)-{-  if (k < num_free)-    return;-#if WANT_STDIO-  if (verbose > 1)-    PRINT("gc_check: %d\n", (int)k);-#endif-  gc();-}--value_t-peekWord(value_t *p)-{-  return *p;-}--void-pokeWord(value_t *p, value_t w)-{-  *p = w;-}--value_t-peekByte(uint8_t *p)-{-  return *p;-}--void-pokeByte(uint8_t *p, value_t w)-{-  *p = (uint8_t)w;-}--/*- * Table of FFI callable functions.- * (For a more flexible solution use dlopen()/dlsym()/dlclose())- * The table contains the information needed to do the actual call.- *   V    void- *   I    value_t- *   i    int- *   D    flt_t- *   P    void*- * The types are- *   V    void    name(void)- *   i    int     name(void)- *   I    value_t name(voi)- *   IV   void    name(value_t)- *   II   value_t name(value_t)- *   IIV  void    name(value_t, value_t)- *   III  value_t name(value_t, value_t)- *   DD   flt_t  name(flt_t)- *   Pi   int     name(void*)- *   PI   value_t name(void*)- *   PP   void*   name(void*)- *   iPi  int     name(int, void*)- *   PPI  value_t name(void*, void*)- *   PPP  void*   name(void*, void*)- * more can easily be added.- */-struct {-  const char *ffi_name;-  const funptr_t ffi_fun;-  enum { FFI_V, FFI_I, FFI_IV, FFI_II, FFI_IIV, FFI_III, FFI_DD, FFI_DDD, FFI_PI,-         FFI_i, FFI_Pi, FFI_iPi, FFI_PIIPI, FFI_PIV, FFI_IIP,-         FFI_PPI, FFI_PP, FFI_PPP, FFI_IPI, FFI_PV, FFI_IP, FFI_PPV, FFI_PPzV,-  } ffi_how;-} ffi_table[] = {-#if WORD_SIZE == 64-  { "llabs",    (funptr_t)llabs,   FFI_II },-#else  /* WORD_SIZE */-  { "llabs",    (funptr_t)labs,    FFI_II },-#endif  /* WORD_SIZE */-#if WANT_MATH-#if WORD_SIZE == 64-  { "log",      (funptr_t)log,     FFI_DD },-  { "exp",      (funptr_t)exp,     FFI_DD },-  { "sqrt",     (funptr_t)sqrt,    FFI_DD },-  { "sin",      (funptr_t)sin,     FFI_DD },-  { "cos",      (funptr_t)cos,     FFI_DD },-  { "tan",      (funptr_t)tan,     FFI_DD },-  { "asin",     (funptr_t)asin,    FFI_DD },-  { "acos",     (funptr_t)acos,    FFI_DD },-  { "atan",     (funptr_t)atan,    FFI_DD },-  { "atan2",    (funptr_t)atan2,   FFI_DDD },-#else  /* WORD_SIZE == 64 */-  { "log",      (funptr_t)logf,    FFI_DD },-  { "exp",      (funptr_t)expf,    FFI_DD },-  { "sqrt",     (funptr_t)sqrtf,   FFI_DD },-  { "sin",      (funptr_t)sinf,    FFI_DD },-  { "cos",      (funptr_t)cosf,    FFI_DD },-  { "tan",      (funptr_t)tanf,    FFI_DD },-  { "asin",     (funptr_t)asinf,   FFI_DD },-  { "acos",     (funptr_t)acosf,   FFI_DD },-  { "atan",     (funptr_t)atanf,   FFI_DD },-  { "atan2",    (funptr_t)atan2f,  FFI_DDD },  -#endif  /* WORD_SIZE == 64 */-#endif  /* WANT_MATH */-  { "getenv",   (funptr_t)getenv,  FFI_PP },--  { "getRaw",   (funptr_t)GETRAW,  FFI_i },-#if WANT_STDIO-  { "fgetc",    (funptr_t)fgetc,   FFI_Pi },-  { "fputc",    (funptr_t)fputc,   FFI_iPi },-  //  { "cprint",   (funptr_t)cprint,  FFI_PAV },-  //  { "serialize",(funptr_t)serialize,  FFI_PAV },-  //  { "deserialize",(funptr_t)deserialize,  FFI_PA },-  { "fclose",   (funptr_t)fclose,  FFI_Pi },-  { "fflush",   (funptr_t)fflush,  FFI_Pi },-  { "fopen",    (funptr_t)fopen,   FFI_PPP },-  { "fread",    (funptr_t)fread,   FFI_PIIPI },-  { "fwrite",   (funptr_t)fwrite,  FFI_PIIPI },-  { "tmpname",  (funptr_t)TMPNAME, FFI_PPP },-  { "unlink",   (funptr_t)unlink,  FFI_Pi },-  { "system",   (funptr_t)system,  FFI_Pi },-#endif  /* WANT_STDIO */--#if WANT_MD5-  { "md5File",  (funptr_t)md5File, FFI_PPV },-  { "md5String",(funptr_t)md5String, FFI_PPV },-  { "md5Array", (funptr_t)md5Array, FFI_PPzV },-#endif--  { "iswindows",(funptr_t)iswindows, FFI_I },--  //  { "getArgs",   (funptr_t)getArgs,  FFI_A },-  { "getTimeMilli",(funptr_t)GETTIMEMILLI,  FFI_I },-  { "free",     (funptr_t)FREE,    FFI_PV },-  { "malloc",   (funptr_t)MALLOC,  FFI_IP }, /* The I is really a size_t */-  { "calloc",   (funptr_t)MALLOC,  FFI_IIP },-  { "peekWord", (funptr_t)peekWord,FFI_PI },-  { "pokeWord", (funptr_t)pokeWord,FFI_PIV },-  { "peekByte", (funptr_t)peekByte,FFI_PI },-  { "pokeByte", (funptr_t)pokeByte,FFI_PIV },-  { "memcpy",   (funptr_t)memcpy,  FFI_PPzV },-  { "memmove",  (funptr_t)memmove, FFI_PPzV },-};--/* Look up an FFI function by name */-value_t-lookupFFIname(const char *name)-{-  for(int i = 0; i < sizeof(ffi_table) / sizeof(ffi_table[0]); i++)-    if (strcmp(ffi_table[i].ffi_name, name) == 0)-      return (value_t)i;-  return -1;-}--NODEPTR-ffiNode(const char *buf)-{-  NODEPTR r;-  value_t i = lookupFFIname(buf);-  if (i < 0) {-    /* lookup failed, generate a node that will dynamically generate an error */-    r = alloc_node(T_BADDYN);-    char *fun = MALLOC(strlen(buf) + 1);-    strcpy(fun, buf);-    STR(r) = fun;-  } else {-    r = alloc_node(T_IO_CCALL);-    SETVALUE(r, i);-  }-  return r;-}--/* If the next input character is c, then consume it, else leave it alone. */-int-gobble(BFILE *f, int c)-{-  int d = f->getb(f);-  if (c == d) {-    return 1;-  } else {-    f->ungetb(d, f);-    return 0;-  }-}--/* Get a non-terminating character.  ' ' and ')' terminate a token. */-int-getNT(BFILE *f)-{-  int c;-  -  c = f->getb(f);-  if (c == ' ' || c == ')') {-    f->ungetb(c, f);-    return 0;-  } else {-    return c;-  }-}--value_t-parse_int(BFILE *f)-{-  value_t i = 0;-  value_t neg = 1;-  int c = f->getb(f);-  if (c == '-') {-    neg = -1;-    c = f->getb(f);-  }-  for(;;) {-    i = i * 10 + c - '0';-    c = f->getb(f);-    if (c < '0' || c > '9') {-      f->ungetb(c, f);-      break;-    }-  }-  return neg * i;-}--#if WANT_FLOAT-flt_t-parse_double(BFILE *f)-{-  // apparently longest float, when rendered, takes up 24 characters. We add one more for a potential-  // minus sign, and another one for the final null terminator.-  // https://stackoverflow.com/questions/1701055/what-is-the-maximum-length-in-chars-needed-to-represent-any-double-value-  char buf[26];-  for(int j = 0; (buf[j] = getNT(f)); j++)-    ;--  return strtod(buf, NULL);;-}-#endif--NODEPTR-mkStrNode(const char *str)-{-  NODEPTR n = alloc_node(T_STR);-  STR(n) = str;-  return n;-}--NODEPTR mkInt(value_t i);-NODEPTR mkFlt(flt_t d);-NODEPTR mkPtr(void* p);--/* Table of labelled nodes for sharing during parsing. */-struct shared_entry {-  heapoffs_t label;-  NODEPTR node;                 /* NIL indicates unused */-} *shared_table;-heapoffs_t shared_table_size;--/* Look for the label in the table.- * If it's found, return the node.- * If not found, return the first empty entry.-*/-NODEPTR *-find_label(heapoffs_t label)-{-  int hash = (int)(label % shared_table_size);-  for(int i = hash; ; i++) {-    if (shared_table[i].node == NIL) {-      /* The slot is empty, so claim and return it */-      shared_table[i].label = label;-      return &shared_table[i].node;-    } else if (shared_table[i].label == label) {-      /* Found the label, so return it. */-      return &shared_table[i].node;-    }-    /* Not empty and not found, try next. */-  }-}--char *-parse_string(BFILE *f)-{-  size_t sz = 20;-  char *buffer = MALLOC(sz);-  size_t i;-  int c;--  if (!buffer)-    memerr();-  for(i = 0;;) {-    c = f->getb(f);-    if (c == '"')-      break;-    if (i >= sz) {-      sz *= 2;-      buffer = realloc(buffer, sz);-      if (!buffer)-        memerr();-    }-    if (c == '\\') {-      buffer[i++] = (char)parse_int(f);-      if (!gobble(f, '&'))-        ERR("parse string");-    } else {-      buffer[i++] = c;-    }-  }-  buffer[i++] = 0;-  return realloc(buffer, i);-}--NODEPTR-parse(BFILE *f)-{-  NODEPTR r;-  NODEPTR *nodep;-  heapoffs_t l;-  value_t i;-  flt_t d;-  int c;-  char buf[80];                 /* store names of primitives. */--  c = f->getb(f);-  if (c < 0) ERR("parse EOF");-  switch (c) {-  case '(' :-    /* application: (f a) */-    r = alloc_node(T_AP);-    FUN(r) = parse(f);-    if (!gobble(f, ' ')) ERR("parse ' '");-    ARG(r) = parse(f);-    if (!gobble(f, ')')) ERR("parse ')'");-    return r;-  case '&':-    d = parse_double(f);-    r = mkFlt(d);-    return r;-  case '#':-    i = parse_int(f);-    r = mkInt(i);-    return r;-  case '[':-    {-      size_t sz = (size_t)parse_int(f);-      if (!gobble(f, ']')) ERR("parse arr 1");-      struct ioarray *arr = arr_alloc(sz, NIL);-      for (size_t i = 0; i < sz; i++) {-        if (!gobble(f, ' ')) ERR("parse arr 2");-        arr->array[i] = parse(f);-      }-      r = alloc_node(T_ARR);-      ARR(r) = arr;-      return r;-    }-  case '_' :-    /* Reference to a shared value: _label */-    l = parse_int(f);  /* The label */-    nodep = find_label(l);-    if (*nodep == NIL) {-      /* Not yet defined, so make it an indirection */-      *nodep = alloc_node(T_IND);-      INDIR(*nodep) = NIL;-    }-    return *nodep;-  case ':' :-    /* Define a shared expression: :label e */-    l = parse_int(f);  /* The label */-    if (!gobble(f, ' ')) ERR("parse ' '");-    nodep = find_label(l);-    if (*nodep == NIL) {-      /* not referenced yet, so create a node */-      *nodep = alloc_node(T_IND);-      INDIR(*nodep) = NIL;-    } else {-      /* Sanity check */-      if (INDIR(*nodep) != NIL) ERR("shared != NIL");-    }-    r = parse(f);-    INDIR(*nodep) = r;-    return r;-  case '"' :-    /* Everything up to the next " is a string.-     * Special characters are encoded as \NNN&,-     * where NNN is the decimal value of the character */-    /* XXX assume there are no NULs in the string, and all fit in a char */-    return mkStrNode(parse_string(f));-  case '!':-    if (!gobble(f, '"'))-      ERR("parse !");-    i = add_tick_table(parse_string(f));-    r = alloc_node(T_TICK);-    SETVALUE(r, (value_t)i);-    return r;-  case '^':-    /* An FFI name */-    for (int j = 0; (buf[j] = getNT(f)); j++)-      ;-    r = ffiNode(buf);-    return r;-  default:-    buf[0] = c;-    /* A primitive, keep getting char's until end */-    for (int j = 1; (buf[j] = getNT(f)); j++)-      ;-    /* Look up the primop and use the preallocated node. */-    for (int j = 0; j < sizeof primops / sizeof primops[0]; j++) {-      if (strcmp(primops[j].name, buf) == 0) {-        return primops[j].node;-      }-    }-    ERR1("no primop %s", buf);-  }-}--void-checkversion(BFILE *f)-{-  char *p = VERSION;-  int c;--  while ((c = *p++)) {-    if (c != f->getb(f))-      ERR("version mismatch");-  }-  gobble(f, '\r');                 /* allow extra CR */-}--/* Parse a file */-NODEPTR-parse_top(BFILE *f)-{-  checkversion(f);-  heapoffs_t numLabels = parse_int(f);-  if (!gobble(f, '\n'))-    ERR("size parse");-  gobble(f, '\r');                 /* allow extra CR */-  shared_table_size = 3 * numLabels; /* sparsely populated hashtable */-  shared_table = MALLOC(shared_table_size * sizeof(struct shared_entry));-  if (!shared_table)-    memerr();-  for(heapoffs_t i = 0; i < shared_table_size; i++)-    shared_table[i].node = NIL;-  NODEPTR n = parse(f);-  FREE(shared_table);-  return n;-}--#if WANT_STDIO-NODEPTR-parse_FILE(FILE *f)-{-  BFILE *p = openb_FILE(f);-  /* And parse it */-  NODEPTR n = parse_top(p);-  p->closeb(p);-  return n;-}--NODEPTR-parse_file(const char *fn, size_t *psize)-{-  FILE *f = fopen(fn, "r");-  if (!f)-    ERR1("file not found %s", fn);--  /* And parse it */-  NODEPTR n = parse_FILE(f);-  *psize = ftell(f);-  return n;-}-#endif  /* WANT_STDIO */--counter_t num_shared;--/* Two bits per node: marked, shared- * 0, 0   -- not visited- * 1, 0   -- visited once- * 1, 1   -- visited more than once- * 0, 1   -- printed- */-bits_t *marked_bits;-bits_t *shared_bits;-static INLINE void set_bit(bits_t *bits, NODEPTR n)-{-  heapoffs_t i = LABEL(n);-  bits[i / BITS_PER_WORD] |= (1ULL << (i % BITS_PER_WORD));-}-#if WANT_STDIO-static INLINE void clear_bit(bits_t *bits, NODEPTR n)-{-  heapoffs_t i = LABEL(n);-  bits[i / BITS_PER_WORD] &= ~(1ULL << (i % BITS_PER_WORD));-}-#endif-static INLINE int test_bit(bits_t *bits, NODEPTR n)-{-  heapoffs_t i = LABEL(n);-  return (bits[i / BITS_PER_WORD] & (1ULL << (i % BITS_PER_WORD))) != 0;-}--#if WANT_STDIO-void printrec(FILE *f, NODEPTR n);--/* Mark all reachable nodes, when a marked node is reached, mark it as shared. */-void-find_sharing(NODEPTR n)-{- top:-  while (GETTAG(n) == T_IND)-    n = INDIR(n);-  //PRINT("find_sharing %p %llu ", n, LABEL(n));-  if (GETTAG(n) == T_AP) {-    if (test_bit(shared_bits, n)) {-      /* Alread marked as shared */-      //PRINT("shared\n");-      ;-    } else if (test_bit(marked_bits, n)) {-      /* Already marked, so now mark as shared */-      //PRINT("marked\n");-      set_bit(shared_bits, n);-      num_shared++;-    } else {-      /* Mark as visited, and recurse */-      //PRINT("unmarked\n");-      set_bit(marked_bits, n);-      find_sharing(FUN(n));-      n = ARG(n);-      goto top;-    }-  } else {-    /* Not an application, so do nothing */-    //PRINT("not T_AP\n");-    ;-  }-}--void-print_string(FILE *f, const char *p)-{-  int c;--  fputc('"', f);-  while ((c = *p++)) {-    if (c == '"' || c == '\\' || c < ' ' || c > '~') {-      fprintf(f, "\\%d&", c);-    } else {-      fputc(c, f);-    }-  }-  fputc('"', f);-}--/* Recursively print an expression.-   This assumes that the shared nodes has been marked as such.-*/-void-printrec(FILE *f, NODEPTR n)-{-  if (test_bit(shared_bits, n)) {-    /* The node is shared */-    if (test_bit(marked_bits, n)) {-      /* Not yet printed, so emit a label */-      fprintf(f, ":%"PRIheap" ", LABEL(n));-      clear_bit(marked_bits, n);  /* mark as printed */-    } else {-      /* This node has already been printed, so just use a reference. */-      fprintf(f, "_%"PRIheap, LABEL(n));-      return;-    }-  }--  switch (GETTAG(n)) {-  case T_IND: /*putc('*', f);*/ printrec(f, INDIR(n)); break;-  case T_AP:-    fputc('(', f);-    printrec(f, FUN(n));-    fputc(' ', f);-    printrec(f, ARG(n));-    fputc(')', f);-    break;-  case T_INT: fprintf(f, "#%"PRIvalue, GETVALUE(n)); break;-  case T_DBL: fprintf(f, "&%.16g", GETDBLVALUE(n)); break;-  case T_ARR:-    /* Arrays serialize as '[sz] e_1 ... e_sz' */-    fprintf(f, "[%u]", (unsigned)ARR(n)->size);-    for(size_t i = 0; i < ARR(n)->size; i++) {-      fputc(' ', f);-      printrec(f, ARR(n)->array[i]);-    }-    break;-  case T_PTR:-    if (PTR(n) == stdin)-      fprintf(f, "IO.stdin");-    else if (PTR(n) == stdout)-      fprintf(f, "IO.stdout");-    else if (PTR(n) == stderr)-      fprintf(f, "IO.stderr");-    else-      ERR("Cannot serialize pointers");-    break;-  case T_STR:-    print_string(f, STR(n));-    break;-  case T_BADDYN: fprintf(f, "^%s", STR(n)); break;-  case T_S: fprintf(f, "S"); break;-  case T_K: fprintf(f, "K"); break;-  case T_I: fprintf(f, "I"); break;-  case T_C: fprintf(f, "C"); break;-  case T_B: fprintf(f, "B"); break;-  case T_A: fprintf(f, "A"); break;-  case T_U: fprintf(f, "U"); break;-  case T_Y: fprintf(f, "Y"); break;-  case T_P: fprintf(f, "P"); break;-  case T_R: fprintf(f, "R"); break;-  case T_O: fprintf(f, "O"); break;-  case T_SS: fprintf(f, "S'"); break;-  case T_BB: fprintf(f, "B'"); break;-  case T_Z: fprintf(f, "Z"); break;-  case T_K2: fprintf(f, "K2"); break;-  case T_K3: fprintf(f, "K3"); break;-  case T_K4: fprintf(f, "K4"); break;-  case T_CC: fprintf(f, "C'"); break;-  case T_CCB: fprintf(f, "C'B"); break;-  case T_ADD: fprintf(f, "+"); break;-  case T_SUB: fprintf(f, "-"); break;-  case T_MUL: fprintf(f, "*"); break;-  case T_QUOT: fprintf(f, "quot"); break;-  case T_REM: fprintf(f, "rem"); break;-  case T_UQUOT: fprintf(f, "uquot"); break;-  case T_UREM: fprintf(f, "urem"); break;-  case T_SUBR: fprintf(f, "subtract"); break;-  case T_NEG: fprintf(f, "neg"); break;-  case T_AND: fprintf(f, "and"); break;-  case T_OR: fprintf(f, "or"); break;-  case T_XOR: fprintf(f, "xor"); break;-  case T_INV: fprintf(f, "inv"); break;-  case T_SHL: fprintf(f, "shl"); break;-  case T_SHR: fprintf(f, "shr"); break;-  case T_ASHR: fprintf(f, "ashr"); break;-#if WANT_FLOAT-  case T_FADD: fprintf(f, "f+"); break;-  case T_FSUB: fprintf(f, "f-"); break;-  case T_FMUL: fprintf(f, "f*"); break;-  case T_FDIV: fprintf(f, "f/"); break;-  case T_FNEG: fprintf(f, "fneg"); break;-  case T_ITOF: fprintf(f, "itof"); break;-  case T_FEQ: fprintf(f, "f=="); break;-  case T_FNE: fprintf(f, "f/="); break;-  case T_FLT: fprintf(f, "f<"); break;-  case T_FLE: fprintf(f, "f<="); break;-  case T_FGT: fprintf(f, "f>"); break;-  case T_FGE: fprintf(f, "f>="); break;-  case T_FSHOW: fprintf(f, "fshow"); break;-  case T_FREAD: fprintf(f, "fread"); break;-#endif-  case T_EQ: fprintf(f, "=="); break;-  case T_NE: fprintf(f, "/="); break;-  case T_LT: fprintf(f, "<"); break;-  case T_LE: fprintf(f, "<="); break;-  case T_GT: fprintf(f, ">"); break;-  case T_GE: fprintf(f, ">="); break;-  case T_ULT: fprintf(f, "u<"); break;-  case T_ULE: fprintf(f, "u<="); break;-  case T_UGT: fprintf(f, "u>"); break;-  case T_UGE: fprintf(f, "u>="); break;-  case T_PEQ: fprintf(f, "p=="); break;-  case T_PNULL: fprintf(f, "pnull"); break;-  case T_PADD: fprintf(f, "p+"); break;-  case T_PSUB: fprintf(f, "p-"); break;-  case T_ERROR: fprintf(f, "error"); break;-  case T_NODEFAULT: fprintf(f, "noDefault"); break;-  case T_NOMATCH: fprintf(f, "noMatch"); break;-  case T_EQUAL: fprintf(f, "equal"); break;-  case T_COMPARE: fprintf(f, "compare"); break;-  case T_RNF: fprintf(f, "rnf"); break;-  case T_SEQ: fprintf(f, "seq"); break;-  case T_IO_BIND: fprintf(f, "IO.>>="); break;-  case T_IO_THEN: fprintf(f, "IO.>>"); break;-  case T_IO_RETURN: fprintf(f, "IO.return"); break;-  case T_IO_SERIALIZE: fprintf(f, "IO.serialize"); break;-  case T_IO_PRINT: fprintf(f, "IO.print"); break;-  case T_IO_DESERIALIZE: fprintf(f, "IO.deserialize"); break;-  case T_IO_GETARGS: fprintf(f, "IO.getArgs"); break;-  case T_IO_GETTIMEMILLI: fprintf(f, "IO.getTimeMilli"); break;-  case T_IO_PERFORMIO: fprintf(f, "IO.performIO"); break;-  case T_IO_CCALL: fprintf(f, "^%s", ffi_table[GETVALUE(n)].ffi_name); break;-  case T_IO_CATCH: fprintf(f, "IO.catch"); break;-  case T_ARR_ALLOC: fprintf(f, "A.alloc");-  case T_ARR_SIZE: fprintf(f, "A.size");-  case T_ARR_READ: fprintf(f, "A.read");-  case T_ARR_WRITE: fprintf(f, "A.write");-  case T_ARR_EQ: fprintf(f, "A.==");-  case T_DYNSYM: fprintf(f, "dynsym"); break;-  case T_NEWCASTRINGLEN: fprintf(f, "newCAStringLen"); break;-  case T_PEEKCASTRING: fprintf(f, "peekCAString"); break;-  case T_PEEKCASTRINGLEN: fprintf(f, "peekCAStringLen"); break;-  case T_TOINT: fprintf(f, "toInt"); break;-  case T_TOPTR: fprintf(f, "toPtr"); break;-  case T_TODBL: fprintf(f, "toDbl"); break;-  case T_TICK:-    fprintf(f, "!");-    print_string(f, tick_table[GETVALUE(n)].tick_name);-    break;-  default: ERR("print tag");-  }-}--/* Serialize a graph to file. */-void-print(FILE *f, NODEPTR n, int header)-{-  num_shared = 0;-  marked_bits = calloc(free_map_nwords, sizeof(bits_t));-  if (!marked_bits)-    memerr();-  shared_bits = calloc(free_map_nwords, sizeof(bits_t));-  if (!shared_bits)-    memerr();-  find_sharing(n);-  if (header)-    fprintf(f, "%s%"PRIcounter"\n", VERSION, num_shared);-  printrec(f, n);-  FREE(marked_bits);-  FREE(shared_bits);-}--/* Show a graph. */-void-pp(FILE *f, NODEPTR n)-{-  print(f, n, 0);-  fprintf(f, "\n");-}-#endif  /* WANT_STDIO */--NODEPTR-mkInt(value_t i)-{-#if INTTABLE-  if (LOW_INT <= i && i < HIGH_INT) {-    return intTable[i - LOW_INT];-  }-#endif--  NODEPTR n;-  n = alloc_node(T_INT);-  SETVALUE(n, i);-  return n;-}--NODEPTR-mkFlt(flt_t d)-{-  NODEPTR n;-  n = alloc_node(T_DBL);-  SETDBLVALUE(n, d);-  return n;-}--NODEPTR-mkPtr(void* p)-{-  NODEPTR n;-  n = alloc_node(T_PTR);-  PTR(n) = p;-  return n;-}--static INLINE NODEPTR-mkNil(void)-{-  return combFalse;-}--static INLINE NODEPTR-mkCons(NODEPTR x, NODEPTR xs)-{-  return new_ap(new_ap(combCons, x), xs);-}--size_t-strNodes(size_t len)-{-  /* Each character will need a CHAR node and a CONS node, a CONS uses 2 T_AP nodes */-  len *= (1 + 2);-  /* And each string will need a NIL */-  len += 1;-  return len;-}--/* Turn a C string into a combinator string */-NODEPTR-mkString(const char *astr, size_t len)-{-  NODEPTR n, nc;-  const unsigned char *str = (unsigned char*)astr; /* no sign bits, please */--  n = mkNil();-  for(size_t i = len; i > 0; i--) {-    nc = mkInt(str[i-1]);-    n = mkCons(nc, n);-  }-  return n;-}--NODEPTR-mkStringC(const char *str)-{-  return mkString(str, strlen(str));-}--void eval(NODEPTR n);--/* Evaluate and skip indirections. */-static INLINE NODEPTR-evali(NODEPTR n)-{-  /* Need to push and pop in case GC happens */-  PUSH(n);-  eval(n);-  n = POPTOP();-  while (GETTAG(n) == T_IND)-    n = INDIR(n);-  return n;-}--/* Follow indirections */-static INLINE NODEPTR-indir(NODEPTR n)-{-  while (GETTAG(n) == T_IND)-    n = INDIR(n);-  return n;-}--/* Evaluate to an INT */-static INLINE value_t-evalint(NODEPTR n)-{-  n = evali(n);-#if SANITY-  if (GETTAG(n) != T_INT) {-    ERR1("evalint, bad tag %d", GETTAG(n));-  }-#endif-  return GETVALUE(n);-}--/* Evaluate to a Flt_T */-static INLINE flt_t-evaldbl(NODEPTR n)-{-  n = evali(n);-#if SANITY-  if (GETTAG(n) != T_DBL) {-    ERR1("evaldbl, bad tag %d", GETTAG(n));-  }-#endif-  return GETDBLVALUE(n);-}--/* Evaluate to a T_PTR */-void *-evalptr(NODEPTR n)-{-  n = evali(n);-#if SANITY-  if (GETTAG(n) != T_PTR) {-    ERR1("evalptr, bad tag %d", GETTAG(n));-  }-#endif-  return PTR(n);-}--/* Evaluate a string, returns a newly allocated buffer. */-/* XXX this is cheating, should use continuations */-char *-evalstring(NODEPTR n, value_t *lenp)-{-  size_t sz = 1000;-  size_t offs;-  char *name = MALLOC(sz);-  value_t c;-  NODEPTR x;--  if (!name)-    memerr();-  for (offs = 0;;) {-    if (offs >= sz - 1) {-      sz *= 2;-      name = realloc(name, sz);-      if (!name)-        memerr();-    }-    n = evali(n);-    if (GETTAG(n) == T_K)            /* Nil */-      break;-    else if (GETTAG(n) == T_AP && GETTAG(x = indir(FUN(n))) == T_AP && GETTAG(indir(FUN(x))) == T_O) { /* Cons */-      PUSH(n);                  /* protect from GC */-      c = evalint(ARG(x));-      n = POPTOP();-      if (c < 0 || c > 127)-	ERR("invalid char");    /* Only allow ASCII */-      name[offs++] = (char)c;-      n = ARG(n);-    } else {-      ERR("evalstring not Nil/Cons");-    }-  }-  name[offs] = 0;-  if (lenp)-    *lenp = (value_t)offs;-  return name;-}--/* Compares anything, but really only works well on strings.- * if p < q  return -1- * if p > q  return 1- * if p == q return 0- */-int-compare(NODEPTR p, NODEPTR q)-{-  int r;-  value_t x, y;-  void *f, *g;-  - top:-  PUSH(q);                      /* save for GC */-  p = evali(p);-  q = evali(TOP(0));-  POP(1);-  enum node_tag ptag = GETTAG(p);-  enum node_tag qtag = GETTAG(q);-  if (ptag != qtag) {-    /* Hack to make Nil < Cons */-    if (ptag == T_K && qtag == T_AP)-      return -1;-    if (ptag == T_AP && qtag == T_K)-      return 1;-    return ptag < qtag ? -1 : 1;-  }-  switch (ptag) {-  case T_AP:-    PUSH(ARG(p));-    PUSH(ARG(q));-    r = compare(FUN(p), FUN(q));-    if (r != 0) {-      POP(2);-      return r;-    }-    q = TOP(0);-    p = TOP(1);-    POP(2);-    goto top;-  case T_INT:-  case T_IO_CCALL:-    x = GETVALUE(p);-    y = GETVALUE(q);-    return x < y ? -1 : x > y ? 1 : 0;-  case T_PTR:-    f = PTR(p);-    g = PTR(q);-    return f < g ? -1 : f > g ? 1 : 0;-  case T_ARR:-    return ARR(p) < ARR(q) ? -1 : ARR(p) > ARR(q) ? 1 : 0;-  default:-    return 0;-  }-}--bits_t *rnf_bits;--void-rnf_rec(NODEPTR n)-{- top:-  if (test_bit(rnf_bits, n))-    return;-  set_bit(rnf_bits, n);-  n = evali(n);-  if (GETTAG(n) == T_AP) {-    PUSH(ARG(n));               /* protect from GC */-    rnf_rec(FUN(n));-    n = POPTOP();-    goto top;-  }-}--/* This is a yucky hack */-int doing_rnf = 0;--void-rnf(value_t noerr, NODEPTR n)-{-  /* Mark visited nodes to avoid getting stuck in loops. */-  rnf_bits = calloc(free_map_nwords, sizeof(bits_t));-  if (!rnf_bits)-    memerr();-  if (doing_rnf)-    ERR("recursive rnf()");-  doing_rnf = (int)noerr;-  rnf_rec(n);-  doing_rnf = 0;-  FREE(rnf_bits);-}--NODEPTR execio(NODEPTR n);--/* Evaluate a node, returns when the node is in WHNF. */-void-eval(NODEPTR an)-{-  NODEPTR n = an;-  stackptr_t stk = stack_ptr;-  NODEPTR x, y, z, w;-  value_t xi, yi, r;-  void *xp, *yp;-#if WANT_FLOAT-  flt_t xd, yd, rd;-#endif  /* WANT_FLOAT */-  char *msg;-  heapoffs_t l;--/* Reset stack pointer and return. */-#define RET do { stack_ptr = stk; return; } while(0)-/* Check that there are at least n arguments, return if not. */-#define CHECK(n) do { if (stack_ptr - stk < (n)) RET; } while(0)--#define SETIND(n, x) do { SETTAG((n), T_IND); INDIR((n)) = (x); } while(0)-#define GOIND(x) do { SETIND(n, (x)); goto ind; } while(0)-#define GOAP(f,a) do { FUN((n)) = (f); ARG((n)) = (a); goto ap; } while(0)-/* CHKARGN checks that there are at least N arguments.- * It also- *  - sets n to the "top" node- *  - set x, y, ... to the arguments- *  - pops N stack elements- * NOTE: No GC is allowed after these, since the stack has been popped.- */-#define CHKARG0 do { } while(0)-#define CHKARG1 do { CHECK(1); POP(1); n = TOP(-1); x = ARG(n); } while(0)-#define CHKARG2 do { CHECK(2); POP(2); n = TOP(-1); y = ARG(n); x = ARG(TOP(-2)); } while(0)-#define CHKARG3 do { CHECK(3); POP(3); n = TOP(-1); z = ARG(n); y = ARG(TOP(-2)); x = ARG(TOP(-3)); } while(0)-#define CHKARG4 do { CHECK(4); POP(4); n = TOP(-1); w = ARG(n); z = ARG(TOP(-2)); y = ARG(TOP(-3)); x = ARG(TOP(-4)); } while(0)--/* Alloc a possible GC action, e, between setting x and popping */-#define CHKARGEV1(e)   do { CHECK(1); x = ARG(TOP(0)); e; POP(1); n = TOP(-1); } while(0)--#define SETINT(n,r)    do { SETTAG((n), T_INT); SETVALUE((n), (r)); } while(0)-#define SETDBL(n,d)    do { SETTAG((n), T_DBL); SETDBLVALUE((n), (d)); } while(0)-#define SETPTR(n,r)    do { SETTAG((n), T_PTR); PTR(n) = (r); } while(0)-#define OPINT1(e)      do { CHECK(1); xi = evalint(ARG(TOP(0)));                            e; POP(1); n = TOP(-1); } while(0);-#define OPINT2(e)      do { CHECK(2); xi = evalint(ARG(TOP(0))); yi = evalint(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);-#define OPDBL1(e)      do { CHECK(1); xd = evaldbl(ARG(TOP(0)));                            e; POP(1); n = TOP(-1); } while(0);-#define OPDBL2(e)      do { CHECK(2); xd = evaldbl(ARG(TOP(0))); yd = evaldbl(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);-#define OPPTR2(e)      do { CHECK(2); xp = evalptr(ARG(TOP(0))); yp = evalptr(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);-#define ARITHUN(op)    do { OPINT1(r = op xi); SETINT(n, r); RET; } while(0)-#define ARITHBIN(op)   do { OPINT2(r = xi op yi); SETINT(n, r); RET; } while(0)-#define ARITHBINU(op)  do { OPINT2(r = (value_t)((uvalue_t)xi op (uvalue_t)yi)); SETINT(n, r); RET; } while(0)-#define FARITHUN(op)   do { OPDBL1(rd = op xd); SETDBL(n, rd); RET; } while(0)-#define FARITHBIN(op)  do { OPDBL2(rd = xd op yd); SETDBL(n, rd); RET; } while(0)-#define CMP(op)        do { OPINT2(r = xi op yi); GOIND(r ? combTrue : combFalse); } while(0)-#define CMPF(op)       do { OPDBL2(r = xd op yd); GOIND(r ? combTrue : combFalse); } while(0)-#define CMPU(op)       do { OPINT2(r = (uvalue_t)xi op (uvalue_t)yi); GOIND(r ? combTrue : combFalse); } while(0)-#define CMPP(op)       do { OPPTR2(r = xp op yp); GOIND(r ? combTrue : combFalse); } while(0)--  for(;;) {-    num_reductions++;-#if FASTTAGS-    l = LABEL(n);-    enum node_tag tag = l < T_IO_BIND ? l : GETTAG(n);-#else   /* FASTTAGS */-    enum node_tag tag = GETTAG(n);-#endif  /* FASTTAGS */-    switch (tag) {-    ind:-      num_reductions++;-    case T_IND:  n = INDIR(n); break;--    ap:-      num_reductions++;-    case T_AP:   PUSH(n); n = FUN(n); break;--    case T_STR:  GCCHECK(strNodes(strlen(STR(n)))); GOIND(mkStringC(STR(n)));-    case T_INT:  RET;-    case T_DBL:  RET;-    case T_PTR:  RET;-    case T_ARR:  RET;-    case T_BADDYN: ERR1("FFI unknown %s", STR(n));--    case T_S:    GCCHECK(2); CHKARG3; GOAP(new_ap(x, z), new_ap(y, z));                     /* S x y z = x z (y z) */-    case T_SS:   GCCHECK(3); CHKARG4; GOAP(new_ap(x, new_ap(y, w)), new_ap(z, w));          /* S' x y z w = x (y w) (z w) */-    case T_K:                CHKARG2; GOIND(x);                                             /* K x y = *x */-    case T_A:                CHKARG2; GOIND(y);                                             /* A x y = *y */-    case T_U:                CHKARG2; GOAP(y, x);                                           /* U x y = y x */-    case T_I:                CHKARG1; GOIND(x);                                             /* I x = *x */-    case T_Y:                CHKARG1; GOAP(x, n);                                           /* n@(Y x) = x n */-    case T_B:    GCCHECK(1); CHKARG3; GOAP(x, new_ap(y, z));                                /* B x y z = x (y z) */-    case T_BB:   GCCHECK(2); CHKARG4; GOAP(new_ap(x, y), new_ap(z, w));                     /* B' x y z w = x y (z w) */-    case T_Z:                CHKARG3; GOAP(x, y);                                           /* Z x y z = x y */-    case T_C:    GCCHECK(1); CHKARG3; GOAP(new_ap(x, z), y);                                /* C x y z = x z y */-    case T_CC:   GCCHECK(2); CHKARG4; GOAP(new_ap(x, new_ap(y, w)), z);                     /* C' x y z w = x (y w) z */-    case T_P:    GCCHECK(1); CHKARG3; GOAP(new_ap(z, x), y);                                /* P x y z = z x y */-    case T_R:    GCCHECK(1); CHKARG3; GOAP(new_ap(y, z), x);                                /* R x y z = y z x */-    case T_O:    GCCHECK(1); CHKARG4; GOAP(new_ap(w, x), y);                                /* O x y z w = w x y */-    case T_K2:               CHKARG3; GOIND(x);                                             /* K2 x y z = *x */-    case T_K3:               CHKARG4; GOIND(x);                                             /* K3 x y z w = *x */-    case T_K4:               CHECK(5); POP(5); n = TOP(-1); x = ARG(TOP(-5)); GOIND(x);     /* K4 x y z w v = *x */-    case T_CCB:  GCCHECK(2); CHKARG4; GOAP(new_ap(x, z), new_ap(y, w));                     /* C'B x y z w = x z (y w) */--    case T_ADD:  ARITHBIN(+);-    case T_SUB:  ARITHBIN(-);-    case T_MUL:  ARITHBIN(*);-    case T_QUOT: ARITHBIN(/);-    case T_REM:  ARITHBIN(%);-    case T_SUBR: OPINT2(r = yi - xi); SETINT(n, r); RET;-    case T_UQUOT: ARITHBINU(/);-    case T_UREM:  ARITHBINU(%);-    case T_NEG:  ARITHUN(-);-    case T_AND:  ARITHBIN(&);-    case T_OR:   ARITHBIN(|);-    case T_XOR:  ARITHBIN(^);-    case T_INV:  ARITHUN(~);-    case T_SHL:  ARITHBIN(<<);-    case T_SHR:  ARITHBINU(>>);-    case T_ASHR: ARITHBIN(>>);--#if WANT_FLOAT-    case T_FADD: FARITHBIN(+);-    case T_FSUB: FARITHBIN(-);-    case T_FMUL: FARITHBIN(*);-    case T_FDIV: FARITHBIN(/);-    case T_FNEG: FARITHUN(-);-    case T_ITOF: OPINT1(rd = (flt_t)xi); SETDBL(n, rd); RET;-    case T_FEQ: CMPF(==);-    case T_FNE: CMPF(!=);-    case T_FLT: CMPF(<);-    case T_FLE: CMPF(<=);-    case T_FGT: CMPF(>);-    case T_FGE: CMPF(>=);-    case T_FREAD:-      CHECK(1);-      msg = evalstring(ARG(TOP(0)), 0);-#if WORD_SIZE == 64-      xd = strtod(msg, NULL);-#else-      xd = strtof(msg, NULL);-#endif-      FREE(msg);--      POP(1);-      n = TOP(-1);-      -      GOIND(mkFlt(xd));--    case T_FSHOW:-      // check that the double exists-      CHECK(1);-      // evaluate it-      xd = evaldbl(ARG(TOP(0)));-      // turn it into a string-      char str[30];-      /* Using 16 decimals will lose some precision.-       * 17 would keep the precision, but it frequently looks very ugly.-       */-      (void)snprintf(str, 25, "%.16g", xd);-      if (!strchr(str, '.') && !strchr(str, 'e') && !strchr(str, 'E')) {-        /* There is no decimal point and no exponent, so add a decimal point */-        /* XXX wrong for inf and NaN */-        strcat(str, ".0");-      }--      // turn it into a mhs string-      GCCHECK(strNodes(strlen(str)));-      NODEPTR s = mkStringC(str);--      // remove the double from the stack-      POP(1);-      n = TOP(-1);-      // update n to be s-      GOIND(s);-#endif  /* WANT_FLOAT */--    /* Retag a word sized value, keeping the value bits */-#define CONV(t) do { CHECK(1); x = evali(ARG(TOP(0))); GCCHECK(1); y = alloc_node(t); SETVALUE(y, GETVALUE(x)); POP(1); n = TOP(-1); GOIND(y); } while(0)-    case T_TODBL: CONV(T_DBL);-    case T_TOINT: CONV(T_INT);-    case T_TOPTR: CONV(T_PTR);-#undef CONV--    case T_EQ:   CMP(==);-    case T_NE:   CMP(!=);-    case T_LT:   CMP(<);-    case T_LE:   CMP(<=);-    case T_GT:   CMP(>);-    case T_GE:   CMP(>=);-    case T_ULT:  CMPU(<);-    case T_ULE:  CMPU(<=);-    case T_UGT:  CMPU(>);-    case T_UGE:  CMPU(>=);--    case T_PEQ:  CMPP(==);-    case T_PNULL: SETTAG(n, T_PTR); PTR(n) = 0; RET;-    case T_PADD: CHECK(2); xp = evalptr(ARG(TOP(0))); yi = evalint(ARG(TOP(1))); POP(2); n = TOP(-1); SETPTR(n, (char*)xp + yi); RET;-    case T_PSUB: CHECK(2); xp = evalptr(ARG(TOP(0))); yp = evalptr(ARG(TOP(1))); POP(2); n = TOP(-1); SETINT(n, (char*)xp - (char*)yp); RET;--    case T_ARR_EQ:-      {-        CHECK(2);-        x = evali(ARG(TOP(0)));-        struct ioarray *arr = ARR(x);-        y = evali(ARG(TOP(1)));-        POP(2);-        n = TOP(-1);-        GOIND(arr == ARR(y) ? combTrue : combFalse);-      }--    case T_NOMATCH:-      if (doing_rnf) RET;-      {-      CHECK(3);-      msg = evalstring(ARG(TOP(0)), 0);-      xi = evalint(ARG(TOP(1)));-      yi = evalint(ARG(TOP(2)));-      int sz = strlen(msg) + 100;-      char *res = MALLOC(sz);-#if WANT_STDIO-      snprintf(res, sz, "no match at %s, line %"PRIvalue", col %"PRIvalue, msg, xi, yi);-#else  /* WANT_STDIO */-      strcpy(res, "no match");-#endif  /* WANT_STDIO */-      POP(2);-      GCCHECK(strNodes(strlen(res)));-      ARG(TOP(0)) = mkStringC(res);-      FREE(res);-      FREE(msg);-      goto err;                 /* XXX not right message if the error is caught */-      }-    case T_NODEFAULT:-      if (doing_rnf) RET;-      {-      CHECK(1);-      msg = evalstring(ARG(TOP(0)), 0);-      int sz = strlen(msg) + 100;-      char *res = MALLOC(sz);--#if WANT_STDIO-      snprintf(res, sz, "no default for %s", msg);-#else  /* WANT_STDIO */-      strcpy(res, "no default");-#endif  /* WANT_STDIO */-      GCCHECK(strNodes(strlen(res)));-      ARG(TOP(0)) = mkStringC(res);-      FREE(res);-      FREE(msg);-      goto err;                 /* XXX not right message if the error is caught */-      }-    case T_ERROR:-      if (doing_rnf) RET;-    err:-      if (cur_handler) {-        /* Pass the string to the handler */-        CHKARG1;-        cur_handler->hdl_exn = x;-        longjmp(cur_handler->hdl_buf, 1);-      } else {-        /* No handler, so just die. */-        CHKARGEV1(msg = evalstring(x, 0));-#if WANT_STDIO-        ERR1("mhs: %s\n", msg);-        EXIT(1);-#else  /* WANT_STDIO */-        ERR1("error: %s", msg);-#endif  /* WANT_STDIO */-      }-    case T_SEQ:  CHECK(2); eval(ARG(TOP(0))); POP(2); n = TOP(-1); y = ARG(n); GOIND(y); /* seq x y = eval(x); y */--    case T_EQUAL:-      CHECK(2); r = compare(ARG(TOP(0)), ARG(TOP(1))); POP(2); n = TOP(-1); GOIND(r==0 ? combTrue : combFalse);-    case T_COMPARE:-      CHECK(2); r = compare(ARG(TOP(0)), ARG(TOP(1))); POP(2); n = TOP(-1); GOIND(r < 0 ? combLT : r > 0 ? combGT : combEQ);--    case T_RNF:-      if (doing_rnf) RET;-      CHECK(2);-      xi = evalint(ARG(TOP(0)));-      rnf(xi, ARG(TOP(1))); POP(2); n = TOP(-1); GOIND(combUnit);--    case T_IO_PERFORMIO:-      if (doing_rnf) RET;-      CHKARGEV1(x = execio(x)); GOIND(x);--    case T_IO_BIND:-    case T_IO_THEN:-    case T_IO_RETURN:-    case T_IO_SERIALIZE:-    case T_IO_PRINT:-    case T_IO_DESERIALIZE:-    case T_IO_GETARGS:-    case T_IO_GETTIMEMILLI:-    case T_IO_CCALL:-    case T_IO_CATCH:-    case T_NEWCASTRINGLEN:-    case T_PEEKCASTRING:-    case T_PEEKCASTRINGLEN:-    case T_ARR_ALLOC:-    case T_ARR_SIZE:-    case T_ARR_READ:-    case T_ARR_WRITE:-      RET;--    case T_DYNSYM:-      /* A dynamic FFI lookup */-      CHECK(1);-      msg = evalstring(ARG(TOP(0)), 0);-      GCCHECK(1);-      x = ffiNode(msg);-      FREE(msg);-      POP(1);-      n = TOP(-1);-      GOIND(x);--    case T_TICK:-      xi = GETVALUE(n);-      CHKARG1;-      dotick(xi);-      GOIND(x);--    default:-      ERR1("eval tag %d", GETTAG(n));-    }-  }-}--/* This is the interpreter for the IO monad operations. */-/* It takes a monadic expression and returns the unwrapped expression (unevaluated). */-NODEPTR-execio(NODEPTR n)-{-  stackptr_t stk = stack_ptr;-  NODEPTR f, x;-  char *name;-  value_t len;-#if WANT_STDIO-  void *ptr;-  int hdr;-#endif  /* WANT_STDIO */--/* IO operations need all arguments, anything else should not happen. */-#define CHECKIO(n) do { if (stack_ptr - stk != (n+1)) {ERR("CHECKIO");}; } while(0)-#define RETIO(p) do { stack_ptr = stk; return (p); } while(0)-#define GCCHECKSAVE(p, n) do { PUSH(p); GCCHECK(n); (p) = TOP(0); POP(1); } while(0)-- top:-  n = evali(n);-  PUSH(n);-  for(;;) {-    num_reductions++;-    switch (GETTAG(n)) {--#if 0-    case T_TICK:-      CHECKIO(2);-      if (GETTAG(ARG(TOP(1))) == T_STR)-        printf("tick: %s\n", STR(ARG(TOP(1))));-      POP(2);-      TOP(0) = ARG(TOP(0));-      break;-#endif--    case T_IND:-      n = INDIR(n);-      TOP(0) = n;-      break;-    case T_AP:-      n = FUN(n);-      PUSH(n);-      break;-    case T_IO_BIND:-      CHECKIO(2);-      {-        /* Use associativity to avoid deep execio recursion. */-        /* (m >>= g) >>= h      ===  m >>= (\ x -> g x >>= h) */-        /* BIND ((BIND m) g) h  ===  BIND m (\ x -> BIND (g x) h) == (BIND m) (((C' BIND) g) h)*/-        NODEPTR bm;-        NODEPTR bmg = evali(ARG(TOP(1)));-        GCCHECKSAVE(bmg, 4);-        if (GETTAG(bmg) == T_AP && GETTAG(bm = indir(FUN(bmg))) == T_AP && GETTAG(indir(FUN(bm))) == T_IO_BIND) {-          NODEPTR g = ARG(bmg);-          NODEPTR h = ARG(TOP(2));-          n = new_ap(bm, new_ap(new_ap(new_ap(combCC, combIOBIND), g), h));-          POP(3);-          goto top;-        }-      }--      x = execio(ARG(TOP(1)));  /* first argument, unwrapped */--      /* Do a GC check, make sure we keep the x live */-      GCCHECKSAVE(x, 1);--      f = ARG(TOP(2));          /* second argument, the continuation */-      n = new_ap(f, x);-      POP(3);-      goto top;-    case T_IO_THEN:-      CHECKIO(2);-      (void)execio(ARG(TOP(1))); /* first argument, unwrapped, ignored */-      n = ARG(TOP(2));          /* second argument, the continuation */-      POP(3);-      goto top;-    case T_IO_RETURN:-      CHECKIO(1);-      n = ARG(TOP(1));-      RETIO(n);-#if WANT_STDIO-    case T_IO_PRINT:-      hdr = 0;-      goto ser;-    case T_IO_SERIALIZE:-      hdr = 1;-    ser:-      CHECKIO(2);-      gc();                     /* DUBIOUS: do a GC to get possible GC reductions */-      ptr = evalptr(ARG(TOP(1)));-      x = evali(ARG(TOP(2)));-      //x = ARG(TOP(1));-      print(ptr, x, hdr);-      fprintf(ptr, "\n");-      RETIO(combUnit);-    case T_IO_DESERIALIZE:-      CHECKIO(1);-      ptr = evalptr(ARG(TOP(1)));-      gc();                     /* parser runs without GC */-      n = parse_FILE(ptr);-      RETIO(n);-#endif-    case T_IO_GETARGS:-      CHECKIO(0);-      {-      /* compute total number of characters */-        size_t size = 0;-        for(int i = 0; i < glob_argc; i++) {-          size += strNodes(strlen(glob_argv[i]));-        }-        /* The returned list will need a CONS for each string, and a NIL */-        size += glob_argc * 2 + 1;-        GCCHECK(size);-        /*-        PRINT("total size %d:", size);-        for(int i = 0; i < glob_argc; i++)-          PRINT(" %s", glob_argv[i]);-        PRINT("\n");-        */-        n = mkNil();-        for(int i = glob_argc-1; i >= 0; i--) {-          n = mkCons(mkString(glob_argv[i], strlen(glob_argv[i])), n);-        }-      }-      RETIO(n);--    case T_IO_CCALL:-      {-        int a = (int)GETVALUE(n);-        funptr_t f = ffi_table[a].ffi_fun;-        value_t ri, xi, yi, zi;-#if WANT_FLOAT-        flt_t rd, xd, yd;-#endif  /* WANT_FLOAT */-        void *xp, *yp, *wp, *rp;-#define INTARG(n) evalint(ARG(TOP(n)))-#define PTRARG(n) evalptr(ARG(TOP(n)))-#define DBLARG(n) evaldbl(ARG(TOP(n)))-#define FFIV(n) CHECKIO(n)-#define FFI(n)  CHECKIO(n); GCCHECK(1)-        /* This isn't great, but this is MicroHs, so it's good enough. */-        switch (ffi_table[a].ffi_how) {-        case FFI_V:   FFIV(0);                                      (*                               f)();                     RETIO(combUnit);-        case FFI_I:   FFI (0);                                 ri = (*(value_t (*)(void            ))f)();      n = mkInt(ri); RETIO(n);-        case FFI_i:   FFI (0);                                 ri = (*(int     (*)(void            ))f)();      n = mkInt(ri); RETIO(n);-        case FFI_IV:  FFIV(1); xi = INTARG(1);                      (*(void    (*)(value_t         ))f)(xi);                   RETIO(combUnit);-        case FFI_II:  FFI (1); xi = INTARG(1);                 ri = (*(value_t (*)(value_t         ))f)(xi);    n = mkInt(ri); RETIO(n);-        case FFI_IIV: FFIV(2); xi = INTARG(1); yi = INTARG(2);      (*(void    (*)(value_t, value_t))f)(xi,yi);                RETIO(combUnit);-        case FFI_III: FFI (2); xi = INTARG(1); yi = INTARG(2); ri = (*(value_t (*)(value_t, value_t))f)(xi,yi); n = mkInt(ri); RETIO(n);-#if WANT_FLOAT-        case FFI_DD:  FFI (1); xd = DBLARG(1);                 rd = (*(flt_t   (*)(flt_t           ))f)(xd);    n = mkFlt(rd); RETIO(n);-        case FFI_DDD: FFI (2); xd = DBLARG(1); yd = DBLARG(2); rd = (*(flt_t   (*)(flt_t,   flt_t  ))f)(xd,yd); n = mkFlt(rd); RETIO(n);-#endif  /* WANT_FLOAT */-        case FFI_PI:  FFI (1); xp = PTRARG(1);                 ri = (*(value_t (*)(void*           ))f)(xp);    n = mkInt(ri); RETIO(n);-        case FFI_Pi:  FFI (1); xp = PTRARG(1);                 ri = (*(int     (*)(void*           ))f)(xp);    n = mkInt(ri); RETIO(n);-        case FFI_IP:  FFI (1); xi = INTARG(1);                 rp = (*(void*   (*)(value_t         ))f)(xi);    n = mkPtr(rp); RETIO(n);-        case FFI_PP:  FFI (1); xp = PTRARG(1);                 rp = (*(void*   (*)(void*           ))f)(xp);    n = mkPtr(rp); RETIO(n);-        case FFI_PV:  FFI (1); xp = PTRARG(1);                      (*(void    (*)(void*           ))f)(xp);                   RETIO(combUnit);-        case FFI_PPI: FFI (2); xp = PTRARG(1);yp = PTRARG(2);  ri = (*(value_t (*)(void*, void*    ))f)(xp,yp); n = mkInt(ri); RETIO(n);-        case FFI_PIV: FFI (2); xp = PTRARG(1);yi = INTARG(2);       (*(void    (*)(void*, value_t  ))f)(xp,yi);                RETIO(combUnit);-        case FFI_PPV: FFI (2); xp = PTRARG(1);yp = PTRARG(2);       (*(void    (*)(void*, void*    ))f)(xp,yp);                RETIO(combUnit);-        case FFI_IIP: FFI (2); xi = INTARG(1);yi = INTARG(2);  rp = (*(void*   (*)(value_t,value_t ))f)(xi,yi); n = mkPtr(rp); RETIO(n);-        case FFI_PPP: FFI (2); xp = PTRARG(1);yp = PTRARG(2);  rp = (*(void*   (*)(void*, void*    ))f)(xp,yp); n = mkPtr(rp); RETIO(n);-        case FFI_IPI: FFI (2); xi = INTARG(1);yp = PTRARG(2);  ri = (*(value_t (*)(value_t, void*  ))f)(xi,yp); n = mkInt(ri); RETIO(n);-        case FFI_iPi: FFI (2); xi = INTARG(1);yp = PTRARG(2);  ri = (*(int     (*)(int,   void*    ))f)(xi,yp); n = mkInt(ri); RETIO(n);-        case FFI_PPzV:FFI (3); xp = PTRARG(1);yp = PTRARG(2); zi = INTARG(3); (*(void    (*)(void*, void*, size_t))f)(xp,yp,zi); RETIO(combUnit);-        case FFI_PIIPI:FFI (4);xp = PTRARG(1);yi = INTARG(2); zi = INTARG(3); wp = PTRARG(4);-          ri = (*(int     (*)(void*, int, int, void*    ))f)(xp,yi,zi,wp); n = mkInt(ri); RETIO(n);-        default: ERR("T_IO_CCALL");-        }-      }--    case T_IO_CATCH:-      {-        struct handler *h = MALLOC(sizeof *h);-        if (!h)-          memerr();-        CHECKIO(2);-        h->hdl_old = cur_handler;-        h->hdl_stack = stack_ptr;-        cur_handler = h;-        if (setjmp(h->hdl_buf)) {-          /* An exception occurred: */-          stack_ptr = h->hdl_stack;-          x = h->hdl_exn;       /* exception value */-          GCCHECKSAVE(x, 1);-          f = ARG(TOP(2));      /* second argument, handler */-          n = new_ap(f, x);-          cur_handler = h->hdl_old;-          FREE(h);-          POP(3);-          goto top;-        } else {-          /* Normal execution: */-          n = execio(ARG(TOP(1))); /* execute first argument */-          cur_handler = h->hdl_old; /* restore old handler */-          FREE(h);-          RETIO(n);             /* return result */-        }-      }--    case T_NEWCASTRINGLEN:-      CHECKIO(1);-      name = evalstring(ARG(TOP(1)), &len);-      GCCHECK(4);-      n = new_ap(new_ap(combPair, x = alloc_node(T_PTR)), mkInt(len));-      PTR(x) = name;-      RETIO(n);--    case T_PEEKCASTRING:-      {-      CHECKIO(1);-      name = evalptr(ARG(TOP(1)));-      size_t size = strlen(name);-      GCCHECK(strNodes(size));-      RETIO(mkString(name, size));-      }--    case T_PEEKCASTRINGLEN:-      {-      CHECKIO(2);-      size_t size = evalint(ARG(TOP(2)));-      name = evalptr(ARG(TOP(1)));-      GCCHECK(strNodes(size));-      RETIO(mkString(name, size));-      }--    case T_ARR_ALLOC:-      {-      CHECKIO(2);-      size_t size = evalint(ARG(TOP(1)));-      NODEPTR elem = ARG(TOP(2));-      struct ioarray *arr = arr_alloc(size, elem);-      n = alloc_node(T_ARR);-      ARR(n) = arr;-      RETIO(n);-      }-    case T_ARR_SIZE:-      CHECKIO(1);-      n = evali(ARG(TOP(1)));-      if (GETTAG(n) != T_ARR)-        ERR("bad ARR tag");-      RETIO(mkInt(ARR(n)->size));-    case T_ARR_READ:-      {-      CHECKIO(2);-      size_t i = evalint(ARG(TOP(2)));-      n = evali(ARG(TOP(1)));-      if (GETTAG(n) != T_ARR)-        ERR("bad ARR tag");-      if (i >= ARR(n)->size)-        ERR("ARR_READ");-      RETIO(ARR(n)->array[i]);-      }-    case T_ARR_WRITE:-      {-      CHECKIO(3);-      size_t i = evalint(ARG(TOP(2)));-      n = evali(ARG(TOP(1)));-      if (GETTAG(n) != T_ARR)-        ERR("bad ARR tag");-      if (i >= ARR(n)->size) {-        //PRINT("%d %p %d\n", (int)i, ARR(n), (int)ARR(n)->size);-        ERR("ARR_WRITE");-      }-      ARR(n)->array[i] = ARG(TOP(3));-      RETIO(combUnit);-      }--    default:-      //printf("bad tag %s\n", tag_names[GETTAG(n)]);-      ERR1("execio tag %d", GETTAG(n));-    }-  }-}--heapoffs_t-memsize(const char *p)-{-  heapoffs_t n = atoi(p);-  while (isdigit(*p))-    p++;-  switch (*p) {-  case 'k': case 'K': n *= 1000; break;-  case 'm': case 'M': n *= 1000000; break;-  case 'g': case 'G': n *= 1000000000; break;-  default: break;-  }-  return n;-}--extern uint8_t *combexpr;-extern int combexprlen;--int-main(int argc, char **argv)-{-  char *inname = 0;-  char **av;-  NODEPTR prog;-  int inrts;-#if WANT_STDIO-  char *outname = 0;-  size_t file_size;-#endif-  int dump_ticks = 0;-  -#if 0-  /* MINGW doesn't do buffering right */-  setvbuf(stdout, NULL, _IOLBF, BUFSIZ);-  setvbuf(stderr, NULL, _IONBF, BUFSIZ);-#endif--#ifdef INITIALIZATION-  main_setup(); // void main_setup(void); will perform extra initialization-                // that is unique to a specific platform, e.g. initialization-                // a HAL-#endif--  argc--, argv++;-  glob_argv = argv;-  for (av = argv, inrts = 0; argc--; argv++) {-    char *p = *argv;-    if (inrts) {-      if (strcmp(p, "-RTS") == 0) {-        inrts = 0;-      } else {-        if (strcmp(p, "-v") == 0)-          verbose++;-        else if (strcmp(p, "-T") == 0)-          dump_ticks = 1;-        else if (strncmp(p, "-H", 2) == 0)-          heap_size = memsize(&p[2]);-        else if (strncmp(p, "-K", 2) == 0)-          stack_size = memsize(&p[2]);-        else if (strncmp(p, "-r", 2) == 0)-          inname = &p[2];-#if WANT_STDIO-        else if (strncmp(p, "-o", 2) == 0)-          outname = &p[2];-#endif  /* WANT_STDIO */-        else-          ERR("Usage: eval [+RTS [-v] [-Hheap-size] [-Kstack-size] [-rFILE] [-oFILE] -RTS] arg ...");-      }-    } else {-      if (strcmp(p, "+RTS") == 0) {-        inrts = 1;-      } else {-        *av++ = p;-      }-    }-  }-  glob_argc = av - glob_argv;--  if (inname == 0)-    inname = "out.comb";--  init_nodes();-  stack = MALLOC(sizeof(NODEPTR) * stack_size);-  if (!stack)-    memerr();--  if (combexpr) {-    int c;-    struct BFILE_buffer ibf = { { getb_buf, ungetb_buf, closeb_buf }, combexprlen, 0, combexpr };-    BFILE *bf = (BFILE*)&ibf;-    c = bf->getb(bf);-    /* Compressed combinators start with a 'Z', otherwise 'v' (for version) */-    if (c == 'Z') {-      /* add compressor transducer */-      bf = add_lzw_decompressor(bf);-    } else {-      /* put it back, we need it */-      bf->ungetb(c, bf);-    }-    prog = parse_top(bf);-    bf->closeb(bf);-  } else {-#if WANT_STDIO-    prog = parse_file(inname, &file_size);-#else-    ERR("no stdio");-#endif-  }--  /* GC unused stuff, nice for -o */-  PUSH(prog);-  want_gc_red = 1;-  gc();-  want_gc_red = 0;-  prog = POPTOP();--#if WANT_STDIO-  heapoffs_t start_size = num_marked;-  if (outname) {-    /* Save GCed file (smaller), and exit. */-    FILE *out = fopen(outname, "w");-    if (!out)-      ERR1("cannot open output file %s", outname);-    print(out, prog, 1);-    fclose(out);-    EXIT(0);-  }-  if (verbose > 2) {-    //pp(stdout, prog);-    print(stdout, prog, 1);-  }-#endif-  run_time -= GETTIMEMILLI();-  NODEPTR res = execio(prog);-  res = evali(res);-  run_time += GETTIMEMILLI();-#if WANT_STDIO-  if (0) {-    FILE *out = fopen("prog.comb", "w");-    print(out, prog, 1);-    fclose(out);-  }-  if (verbose) {-    if (verbose > 1) {-      PRINT("\nmain returns ");-      pp(stdout, res);-      PRINT("node size=%"PRIheap", heap size bytes=%"PRIheap"\n", (heapoffs_t)NODE_SIZE, heap_size * NODE_SIZE);-    }-    setlocale(LC_NUMERIC, "");  /* Make %' work on platforms that support it */-    PRINT("%"PCOMMA"15"PRIheap" combinator file size\n", (heapoffs_t)file_size);-    PRINT("%"PCOMMA"15"PRIheap" cells at start\n", start_size);-    PRINT("%"PCOMMA"15"PRIheap" cells heap size (%"PCOMMA""PRIheap" bytes)\n", heap_size, heap_size * NODE_SIZE);-    PRINT("%"PCOMMA"15"PRIcounter" cells allocated (%"PCOMMA".1f Mbyte/s)\n", num_alloc, num_alloc * NODE_SIZE / ((double)run_time / 1000) / 1000000);-    PRINT("%"PCOMMA"15"PRIcounter" GCs\n", num_gc);-    PRINT("%"PCOMMA"15"PRIcounter" max cells used\n", max_num_marked);-    PRINT("%"PCOMMA"15"PRIcounter" reductions (%"PCOMMA".1f Mred/s)\n", num_reductions, num_reductions / ((double)run_time / 1000) / 1000000);-    PRINT("%"PCOMMA"15"PRIcounter" array alloc\n", num_arr_alloc);-    PRINT("%"PCOMMA"15"PRIcounter" array free\n", num_arr_free);-    PRINT("%15.2fs total expired time\n", (double)run_time / 1000);-    PRINT("%15.2fs total gc time\n", (double)gc_mark_time / 1000);-#if GCRED-    PRINT(" GC reductions A=%d, K=%d, I=%d, int=%d flip=%d\n", red_a, red_k, red_i, red_int, red_flip);-#endif-  }-#endif  /* WANT_STDIO */--  if (dump_ticks) {-    dump_tick_table(stdout);-  }--#ifdef TEARDOWN-  main_teardown(); // do some platform specific teardown+//#include "config.h"++#define VERSION "v7.0\n"++typedef intptr_t value_t;       /* Make value the same size as pointers, since they are in a union */+#define PRIvalue PRIdPTR+typedef uintptr_t uvalue_t;     /* Make unsigned value the same size as pointers, since they are in a union */+#define PRIuvalue PRIuPTR+typedef uintptr_t heapoffs_t;   /* Heap offsets */+#define PRIheap PRIuPTR+typedef uintptr_t tag_t;        /* Room for tag, low order bit indicates AP/not-AP */+typedef intptr_t stackptr_t;    /* Index into stack */++typedef uintptr_t counter_t;    /* Statistics counter, can be smaller since overflow doesn't matter */+#define PRIcounter PRIuPTR+typedef uintptr_t bits_t;       /* One word of bits */+#if WORD_SIZE == 64+typedef double flt_t;+#elif WORD_SIZE == 32+typedef float flt_t;+#elif WORD_SIZE == 16+typedef uint16_t flt_t;         /* No floats, but we need something */+#else+#error Unknown WORD_SIZE+#endif++/* We cast all FFI functions to this type.  It's reasonably portable */+typedef void (*funptr_t)(void);++#if !defined(MALLOC)+#define MALLOC malloc+#endif++#if !defined(FREE)+#define FREE free+#endif++#if !defined(EXIT)+#define EXIT exit+#endif++#if !defined(PRINT)+#define PRINT printf+#endif++#if !defined(MAIN)+#define MAIN int main(int argc, char **argv)+#endif++#if !defined(PCOMMA)+#define PCOMMA "'"+#endif  /* !defined(PCOMMA) */++#if !defined(GETRAW)+int GETRAW(void) { return -1; }+#endif  /* !defined(getraw) */++#if !defined(GETTIMEMILLI)+value_t GETTIMEMILLI(void) { return 0; }+#endif  /* !define(GETTIMEMILLI) */++#if !defined(TMPNAME)+char* TMPNAME(const char* pre, const char* post) {+  char *s = MALLOC(strlen(pre) + 3 + strlen(post) + 1);+  strcpy(s, pre);+  strcat(s, "TMP");+  strcat(s, post);+  return s;+}+#endif++#if !defined(FFS)+/* This is pretty bad, could use deBruijn multiplication instead. */+int+FFS(bits_t x)+{+  int i;+  if (!x)+    return 0;+  for(i = 1; !(x & 1); x >>= 1, i++)+    ;+  return i;+}+#endif  /* !defined(FFS) */++#if !defined(WANT_ARGS)+#define WANT_ARGS 1+#endif++#if !defined(INLINE)+#define INLINE inline+#endif  /* !define(INLINE) */++#if !defined(NORETURN)+#define NORETURN __attribute__ ((noreturn))+#endif /* !defined(NORETURN) */++#if !defined(COUNT)+#define COUNT(n) ++(n)+#endif++value_t+iswindows(void)+{+#if defined(ISWINDOWS)+  return 1;+#else+  return 0;+#endif+}++/***************************************/++/* Keep permanent nodes for LOW_INT <= i < HIGH_INT */+#define LOW_INT (-10)+#define HIGH_INT 256++#if !defined(HEAP_CELLS)+#define HEAP_CELLS 50000000+#endif++#if !defined(STACK_SIZE)+#define STACK_SIZE 100000+#endif++#if !defined(ERR)+#if WANT_STDIO+#define ERR(s)    do { fprintf(stderr,"ERR: "s"\n");   EXIT(1); } while(0)+#define ERR1(s,a) do { fprintf(stderr,"ERR: "s"\n",a); EXIT(1); } while(0)+#else  /* WANT_STDIO */+#define ERR(s) EXIT(1)+#define ERR1(s,a) EXIT(1)+#endif  /* WANT_STDIO */+#endif  /* !define(ERR) */++enum node_tag { T_FREE, T_IND, T_AP, T_INT, T_DBL, T_PTR, T_BADDYN, T_ARR,+                T_S, T_K, T_I, T_B, T_C,+                T_A, T_Y, T_SS, T_BB, T_CC, T_P, T_R, T_O, T_U, T_Z,+                T_K2, T_K3, T_K4, T_CCB,+                T_ADD, T_SUB, T_MUL, T_QUOT, T_REM, T_SUBR, T_UQUOT, T_UREM, T_NEG,+                T_AND, T_OR, T_XOR, T_INV, T_SHL, T_SHR, T_ASHR,+                T_EQ, T_NE, T_LT, T_LE, T_GT, T_GE, T_ULT, T_ULE, T_UGT, T_UGE,+                T_PEQ, T_PNULL, T_PADD, T_PSUB,+                T_TOPTR, T_TOINT, T_TODBL,+#if WANT_FLOAT+                T_FADD, T_FSUB, T_FMUL, T_FDIV, T_FNEG, T_ITOF,+                T_FEQ, T_FNE, T_FLT, T_FLE, T_FGT, T_FGE, T_FSHOW, T_FREAD,+#endif+                T_ARR_ALLOC, T_ARR_SIZE, T_ARR_READ, T_ARR_WRITE, T_ARR_EQ,+                T_ERROR, T_NODEFAULT, T_NOMATCH, T_SEQ, T_EQUAL, T_COMPARE, T_RNF,+                T_TICK,+                T_IO_BIND, T_IO_THEN, T_IO_RETURN,+                T_IO_CCBIND,+                T_IO_SERIALIZE, T_IO_DESERIALIZE,+                T_IO_STDIN, T_IO_STDOUT, T_IO_STDERR, T_IO_GETARGS,+                T_IO_PERFORMIO, T_IO_GETTIMEMILLI, T_IO_PRINT, T_IO_CATCH,+                T_IO_CCALL, T_DYNSYM,+                T_NEWCASTRINGLEN, T_PEEKCASTRING, T_PEEKCASTRINGLEN,+                T_FROMUTF8,+                T_STR,+                T_LAST_TAG,+};+#if 0+static const char* tag_names[] = {+  "FREE", "IND", "AP", "INT", "DBL", "PTR", "BADDYN", "ARR",+  "S", "K", "I", "B", "C",+  "A", "Y", "SS", "BB", "CC", "P", "R", "O", "U", "Z",+  "K2", "K3", "K4", "CCB",+  "ADD", "SUB", "MUL", "QUOT", "REM", "SUBR", "UQUOT", "UREM", "NEG",+  "AND", "OR", "XOR", "INV", "SHL", "SHR", "ASHR",+  "EQ", "NE", "LT", "LE", "GT", "GE", "ULT", "ULE", "UGT", "UGE",+  "PEQ", "PNULL", "PADD", "PSUB",+  "TOPTR", "TOINT", "TODBL",+#if WANT_FLOAT+  "FADD", "FSUB", "FMUL", "FDIV", "FNEG", "ITOF",+  "FEQ", "FNE", "FLT", "FLE", "FGT", "FGE", "FSHOW", "FREAD",+#endif+  "ARR_ALLOC", "ARR_SIZE", "ARR_READ", "ARR_WRITE", "ARR_EQ",+  "ERROR", "NODEFAULT", "NOMATCH", "SEQ", "EQUAL", "COMPARE", "RNF",+  "TICK",+  "IO_BIND", "IO_THEN", "IO_RETURN",+  "C'BIND",+  "IO_SERIALIZE", "IO_DESERIALIZE",+  "IO_STDIN", "IO_STDOUT", "IO_STDERR", "IO_GETARGS",+  "IO_PERFORMIO", "IO_GETTIMEMILLI", "IO_PRINT", "IO_CATCH",+  "IO_CCALL", "DYNSYM",+  "NEWCASTRINGLEN", "PEEKCASTRING", "PEEKCASTRINGLEN",+  "FROMUTF8",+  "STR",+  "LAST_TAG",+};+#endif++struct ioarray;+struct ustring;++typedef struct node {+  union {+    struct node *uufun;+    tag_t        uutag;             /* LSB=1 indicates that this is a tag, LSB=0 that this is a T_AP node */+  } ufun;+  union {+    struct node    *uuarg;+    value_t         uuvalue;+    flt_t           uufloatvalue;+    struct ustring *uustring;+    const char     *uucstring;+    void           *uuptr;+    struct ioarray *uuarray;+  } uarg;+} node;+typedef struct node* NODEPTR;+#define NIL 0+#define HEAPREF(i) &cells[(i)]+#define GETTAG(p) ((p)->ufun.uutag & 1 ? (int)((p)->ufun.uutag >> 1) : T_AP)+#define SETTAG(p,t) do { if (t != T_AP) (p)->ufun.uutag = ((t) << 1) + 1; } while(0)+#define GETVALUE(p) (p)->uarg.uuvalue+#define GETDBLVALUE(p) (p)->uarg.uufloatvalue+#define SETVALUE(p,v) (p)->uarg.uuvalue = v+#define SETDBLVALUE(p,v) (p)->uarg.uufloatvalue = v+#define FUN(p) (p)->ufun.uufun+#define ARG(p) (p)->uarg.uuarg+#define STR(p) (p)->uarg.uustring+#define CSTR(p) (p)->uarg.uucstring+#define PTR(p) (p)->uarg.uuptr+#define ARR(p) (p)->uarg.uuarray+#define INDIR(p) ARG(p)+#define NODE_SIZE sizeof(node)+#define ALLOC_HEAP(n) do { cells = MALLOC(n * sizeof(node)); memset(cells, 0x55, n * sizeof(node)); } while(0)+#define LABEL(n) ((heapoffs_t)((n) - cells))+node *cells;                 /* All cells */++/*+ * UTF-8 encoded strings+ */+struct ustring {+  size_t size;+  unsigned char string[1];+};++/*+ * Arrays are allocated with MALLOC()/FREE().+ * During GC they are marked, and all elements in the array are+ * recursively marked.+ * At the end of the the mark phase there is a scan of all+ * arrays, and the unmarked ones are freed.+ */+struct ioarray {+  struct ioarray *next;         /* all ioarrays are linked together */+  size_t marked;               /* marked during GC */+  size_t size;                  /* number of elements in the array */+  NODEPTR array[1];             /* actual size may be bigger */+};+struct ioarray *array_root = 0;++counter_t num_reductions = 0;+counter_t num_alloc = 0;+counter_t num_gc = 0;+uintptr_t gc_mark_time = 0;+uintptr_t run_time = 0;++NODEPTR *topnode;+NODEPTR atptr;++NODEPTR *stack;+stackptr_t stack_ptr = -1;+#if STACKOVL+#define PUSH(x) do { if (stack_ptr >= stack_size-1) ERR("stack overflow"); stack[++stack_ptr] = (x); } while(0)+#else  /* STACKOVL */+#define PUSH(x) do {                                                       stack[++stack_ptr] = (x); } while(0)+#endif  /* STACKOVL */+#define TOP(n) stack[stack_ptr - (n)]+#define POP(n) stack_ptr -= (n)+#define POPTOP() stack[stack_ptr--]+#define GCCHECK(n) gc_check((n))++heapoffs_t heap_size = HEAP_CELLS; /* number of heap cells */+heapoffs_t heap_start;             /* first location in heap that needs GC */+stackptr_t stack_size = STACK_SIZE;++counter_t num_marked;+counter_t max_num_marked = 0;+counter_t num_free;+counter_t num_arr_alloc;+counter_t num_arr_free;++#define BITS_PER_WORD (sizeof(bits_t) * 8)+bits_t *free_map;             /* 1 bit per node, 0=free, 1=used */+heapoffs_t free_map_nwords;+heapoffs_t next_scan_index;++int want_gc_red = 0;++NORETURN+void+memerr(void)+{+  ERR("Out of memory");+  EXIT(1);+}++/***************************************/++#include "bfile.c"++/***************************************/++struct ioarray*+arr_alloc(size_t sz, NODEPTR e)+{+  struct ioarray *arr = MALLOC(sizeof(struct ioarray) + (sz-1) * sizeof(NODEPTR));+  size_t i;++  if (!arr)+    memerr();+  arr->next = array_root;+  array_root = arr;+  arr->marked = 0;+  arr->size = sz;+  for(i = 0; i < sz; i++)+    arr->array[i] = e;+  //PRINT("arr_alloc(%d, %p) = %p\n", (int)sz, e, arr);+  num_arr_alloc++;+  return arr;+}++/*****************************************************************************/++#if WANT_TICK+struct tick_entry {+  struct ustring *tick_name;+  counter_t tick_count;+} *tick_table = 0;+size_t tick_table_size;+size_t tick_index;++/* Allocate a new tick table entry and return the index. */+size_t+add_tick_table(struct ustring *name)+{+  if (!tick_table) {+    tick_table_size = 100;+    tick_table = malloc(tick_table_size * sizeof(struct tick_entry));+    if (!tick_table)+      memerr();+    tick_index = 0;+  }+  if (tick_index >= tick_table_size) {+    tick_table_size *= 2;+    tick_table = realloc(tick_table, tick_table_size * sizeof(struct tick_entry));+    if (!tick_table)+      memerr();+  }+  tick_table[tick_index].tick_name = name;+  tick_table[tick_index].tick_count = 0;+  return tick_index++;+}++/* Called with the tick index. */+static inline void+dotick(value_t i)+{+  tick_table[i].tick_count++;+}++void+dump_tick_table(FILE *f)+{+  if (!tick_table) {+    fprintf(f, "Tick table empty\n");+    return;+  }+  for (size_t i = 0; i < tick_index; i++) {+    counter_t n = tick_table[i].tick_count;+    if (n)+      fprintf(f, "%-60s %10"PRIcounter"\n", tick_table[i].tick_name->string, n);+  }+}+#endif++/*****************************************************************************/++struct handler {+  jmp_buf         hdl_buf;      /* env storage */+  struct handler *hdl_old;      /* old handler */+  stackptr_t      hdl_stack;    /* old stack pointer */+  NODEPTR         hdl_exn;      /* used temporarily to pass the exception value */+} *cur_handler = 0;++/* Set FREE bit to 0 */+static INLINE void mark_used(NODEPTR n)+{+  heapoffs_t i = LABEL(n);+  if (i < heap_start)+    return;+#if SANITY+  if (i >= free_map_nwords * BITS_PER_WORD) ERR("mark_used");+#endif+  free_map[i / BITS_PER_WORD] &= ~(1ULL << (i % BITS_PER_WORD));+}++/* Set FREE bit to 1, used to undo marking in GC */+static INLINE void mark_unused(NODEPTR n)+{+  heapoffs_t i = LABEL(n);+#if SANITY+  if (i < heap_start)+    ERR("Unmarking invalid heap address.");+  if (i >= free_map_nwords * BITS_PER_WORD) ERR("mark_used");+#endif+  free_map[i / BITS_PER_WORD] |= 1ULL << (i % BITS_PER_WORD);+}++/* Test if FREE bit is 0 */+static INLINE int is_marked_used(NODEPTR n)+{+  heapoffs_t i = LABEL(n);+  if (i < heap_start)+    return 1;+#if SANITY+  if (i >= free_map_nwords * BITS_PER_WORD)+    ERR("is_marked_used");+#endif+  return (free_map[i / BITS_PER_WORD] & (1ULL << (i % BITS_PER_WORD))) == 0;+}++static INLINE void mark_all_free(void)+{+  memset(free_map, ~0, free_map_nwords * sizeof(bits_t));+  next_scan_index = heap_start;+}++#if WANT_ARGS+int glob_argc;+char **glob_argv;+#endif++int verbose = 0;++static INLINE NODEPTR+alloc_node(enum node_tag t)+{+  heapoffs_t i = next_scan_index / BITS_PER_WORD;+  int k;                        /* will contain bit pos + 1 */+  heapoffs_t pos;+  NODEPTR n;++#if SANITY+  if (num_free <= 0)+    ERR("alloc_node");+#endif++  for(;;) {+    heapoffs_t word = free_map[i];+    k = FFS(word);+    if (k)+      break;+    i++;+#if SANITY+    if (i >= free_map_nwords) {+#if 0+      fprintf(stderr, "wordsize=%u, num_free=%u next_scan_index=%u i=%u free_map_nwords=%u\n", (uint)BITS_PER_WORD,+              (uint)num_free, (uint)next_scan_index, (uint)i, (uint)free_map_nwords);+#endif+      ERR("alloc_node: free_map");+    }+#endif+  }+  pos = i * BITS_PER_WORD + k - 1; /* first free node */+  n = HEAPREF(pos);+  mark_used(n);+  next_scan_index = pos;++  SETTAG(n, t);+  COUNT(num_alloc);+  num_free--;+  return n;+}++static INLINE NODEPTR+new_ap(NODEPTR f, NODEPTR a)+{+  NODEPTR n = alloc_node(T_AP);+  FUN(n) = f;+  ARG(n) = a;+  return n;+}++/* Needed during reduction */+NODEPTR intTable[HIGH_INT - LOW_INT];+NODEPTR combFalse, combTrue, combUnit, combCons, combPair;+NODEPTR combCC, combZ, combIOBIND, combIORETURN, combIOCCBIND;+NODEPTR combLT, combEQ, combGT;++/* One node of each kind for primitives, these are never GCd. */+/* We use linear search in this, because almost all lookups+ * are among the combinators.+ */+struct {+  const char *name;+  const enum node_tag tag;+  const enum node_tag flipped;        /* What should (C op) reduce to? defaults to T_FREE */+  NODEPTR node;+} primops[] = {+  /* combinators */+  /* sorted by frequency in a typical program */+  { "B", T_B },+  { "O", T_O },+  { "K", T_K },+  { "C'", T_CC },+  { "C", T_C },+  { "A", T_A },+  { "S'", T_SS },+  { "P", T_P },+  { "R", T_R },+  { "I", T_I },+  { "S", T_S },+  { "U", T_U },+  { "Y", T_Y },+  { "B'", T_BB },+  { "Z", T_Z },+  { "K2", T_K2 },+  { "K3", T_K3 },+  { "K4", T_K4 },+  { "C'B", T_CCB },+/* primops */+  { "+", T_ADD, T_ADD },+  { "-", T_SUB, T_SUBR },+  { "*", T_MUL, T_MUL },+  { "quot", T_QUOT },+  { "rem", T_REM },+  { "uquot", T_UQUOT },+  { "urem", T_UREM },+  { "subtract", T_SUBR, T_SUB },+  { "neg", T_NEG },+  { "and", T_AND, T_AND },+  { "or", T_OR, T_OR },+  { "xor", T_XOR, T_XOR },+  { "inv", T_INV },+  { "shl", T_SHL },+  { "shr", T_SHR },+  { "ashr", T_ASHR },+#if WANT_FLOAT+  { "f+" , T_FADD, T_FADD},+  { "f-" , T_FSUB, T_FSUB},+  { "f*" , T_FMUL, T_FMUL},+  { "f/", T_FDIV},+  { "fneg", T_FNEG},+  { "itof", T_ITOF},+  { "f==", T_FEQ, T_FEQ},+  { "f/=", T_FNE, T_FNE},+  { "f<", T_FLT},+  { "f<=", T_FLE},+  { "f>", T_FGT},+  { "f>=", T_FGE},+  { "fshow", T_FSHOW},+  { "fread", T_FREAD},+#endif  /* WANT_FLOAT */+  { "ord", T_I },+  { "chr", T_I },+  { "==", T_EQ, T_EQ },+  { "/=", T_NE, T_NE },+  { "<", T_LT, T_GT },+  { "u<", T_ULT, T_UGT },+  { "u<=", T_ULE, T_UGE },+  { "u>", T_UGT, T_ULT },+  { "u>=", T_UGE, T_ULE },+  { "<=", T_LE, T_GE },+  { ">", T_GT, T_LT },+  { ">=", T_GE, T_LE },+  { "p==", T_PEQ, T_PEQ },+  { "pnull", T_PNULL },+  { "pcast", T_I },+  { "p+", T_PADD },+  { "p-", T_PSUB },+  { "seq", T_SEQ },+  { "error", T_ERROR },+  { "noDefault", T_NODEFAULT },+  { "noMatch", T_NOMATCH },+  { "equal", T_EQUAL, T_EQUAL },+  { "sequal", T_EQUAL, T_EQUAL },+  { "compare", T_COMPARE },+  { "scmp", T_COMPARE },+  { "icmp", T_COMPARE },+  { "rnf", T_RNF },+  { "fromUTF8", T_FROMUTF8 },+  /* IO primops */+  { "IO.>>=", T_IO_BIND },+  { "IO.>>", T_IO_THEN },+  { "IO.return", T_IO_RETURN },+  { "IO.C'BIND", T_IO_CCBIND },+  { "IO.serialize", T_IO_SERIALIZE },+  { "IO.print", T_IO_PRINT },+  { "IO.deserialize", T_IO_DESERIALIZE },+  { "IO.stdin", T_IO_STDIN },+  { "IO.stdout", T_IO_STDOUT },+  { "IO.stderr", T_IO_STDERR },+  { "IO.getArgs", T_IO_GETARGS },+  { "IO.getTimeMilli", T_IO_GETTIMEMILLI },+  { "IO.performIO", T_IO_PERFORMIO },+  { "IO.catch", T_IO_CATCH },+  { "A.alloc", T_ARR_ALLOC },+  { "A.size", T_ARR_SIZE },+  { "A.read", T_ARR_READ },+  { "A.write", T_ARR_WRITE },+  { "A.==", T_ARR_EQ },+  { "dynsym", T_DYNSYM },+  { "newCAStringLen", T_NEWCASTRINGLEN },+  { "peekCAString", T_PEEKCASTRING },+  { "peekCAStringLen", T_PEEKCASTRINGLEN },+  { "toPtr", T_TOPTR },+  { "toInt", T_TOINT },+  { "toDbl", T_TODBL },+};++#if GCRED+enum node_tag flip_ops[T_LAST_TAG];+#endif++void+init_nodes(void)+{+  enum node_tag t;+  size_t j;+  NODEPTR n;++  ALLOC_HEAP(heap_size);+  free_map_nwords = (heap_size + BITS_PER_WORD - 1) / BITS_PER_WORD; /* bytes needed for free map */+  free_map = MALLOC(free_map_nwords * sizeof(bits_t));+  if (!free_map)+    memerr();++  /* Set up permanent nodes */+  heap_start = 0;+#if !FASTTAGS+  for (int j = 0; j < sizeof primops / sizeof primops[0]; j++) {+    NODEPTR n = HEAPREF(heap_start++);+    primops[j].node = n;+    //MARK(n) = MARKED;+    SETTAG(n, primops[j].tag);+    switch (primops[j].tag) {+    case T_K: combFalse = n; break;+    case T_A: combTrue = n; break;+    case T_I: combUnit = n; break;+    case T_O: combCons = n; break;+    case T_P: combPair = n; break;+    case T_CC: combCC = n; break;+    case T_Z: combZ = n; break;+    case T_IO_BIND: combIOBIND = n; break;+    case T_IO_RETURN: combIORETURN = n; break;+    case T_IO_CCBIND: combIOCCBIND = n; break;+#if WANT_STDIO+    case T_IO_STDIN:  SETTAG(n, T_PTR); PTR(n) = stdin;  break;+    case T_IO_STDOUT: SETTAG(n, T_PTR); PTR(n) = stdout; break;+    case T_IO_STDERR: SETTAG(n, T_PTR); PTR(n) = stderr; break;+#endif  /* WANT_STDIO */+    default:+      break;+    }+  }+#else+  for(t = T_FREE; t < T_LAST_TAG; t++) {+    NODEPTR n = HEAPREF(heap_start++);+    SETTAG(n, t);+    switch (t) {+    case T_K: combFalse = n; break;+    case T_A: combTrue = n; break;+    case T_I: combUnit = n; break;+    case T_O: combCons = n; break;+    case T_P: combPair = n; break;+    case T_CC: combCC = n; break;+    case T_Z: combZ = n; break;+    case T_IO_BIND: combIOBIND = n; break;+    case T_IO_RETURN: combIORETURN = n; break;+    case T_IO_CCBIND: combIOCCBIND = n; break;+#if WANT_STDIO+    case T_IO_STDIN:  SETTAG(n, T_PTR); PTR(n) = stdin;  break;+    case T_IO_STDOUT: SETTAG(n, T_PTR); PTR(n) = stdout; break;+    case T_IO_STDERR: SETTAG(n, T_PTR); PTR(n) = stderr; break;+#endif+    default:+      break;+    }+    for (j = 0; j < sizeof primops / sizeof primops[0];j++) {+      if (primops[j].tag == t) {+        primops[j].node = n;+      }+    }+  }+#endif+#if GCRED+  for (j = 0; j < sizeof primops / sizeof primops[0]; j++) {+    flip_ops[primops[j].tag] = primops[j].flipped;+  }+#endif++  /* The representation of the constructors of+   *  data Ordering = LT | EQ | GT+   * do not have single constructors.+   * But we can make compound one, since they are irreducible.+   */+#define NEWAP(c, f, a) do { n = HEAPREF(heap_start++); SETTAG(n, T_AP); FUN(n) = (f); ARG(n) = (a); (c) = n;} while(0)+  NEWAP(combLT, combZ,     combFalse);  /* Z B */+  NEWAP(combEQ, combFalse, combFalse);  /* K K */+  NEWAP(combGT, combFalse, combTrue);   /* K A */+#undef NEWAP++#if INTTABLE+  /* Allocate permanent Int nodes */+  for (int i = LOW_INT; i < HIGH_INT; i++) {+    NODEPTR n = HEAPREF(heap_start++);+    intTable[i - LOW_INT] = n;+    SETTAG(n, T_INT);+    SETVALUE(n, i);+  }+#endif++  /* Round up heap_start to the next bitword boundary to avoid the permanent nodes. */+  heap_start = (heap_start + BITS_PER_WORD - 1) / BITS_PER_WORD * BITS_PER_WORD;++  mark_all_free();++  num_free = heap_size - heap_start;+}++#if GCRED+int red_a, red_k, red_i, red_int, red_flip;+#endif++//counter_t mark_depth;+//counter_t max_mark_depth = 0;++/* Mark all used nodes reachable from *np, updating *np. */+void+mark(NODEPTR *np)+{+  stackptr_t stk = stack_ptr;+  NODEPTR n;+  NODEPTR *to_push = 0;         /* silence warning by initializing */+#if GCRED+  value_t val;+#endif+  enum node_tag tag;++  //  mark_depth++;+  //  if (mark_depth % 10000 == 0)+  //    PRINT("mark depth %"PRIcounter"\n", mark_depth);+  top:+  n = *np;+  tag = GETTAG(n);+  if (tag == T_IND) {+#if SANITY+    int loop = 0;+    /* Skip indirections, and redirect start pointer */+    while ((tag = GETTAG(n)) == T_IND) {+      //      PRINT("*"); fflush(stdout);+      n = INDIR(n);+      if (loop++ > 10000000) {+        //PRINT("%p %p %p\n", n, INDIR(n), INDIR(INDIR(n)));+        ERR("IND loop");+      }+    }+    //    if (loop)+    //      PRINT("\n");+#else  /* SANITY */+    while ((tag = GETTAG(n)) == T_IND) {+      n = INDIR(n);+    }+#endif  /* SANITY */+    *np = n;+  }+  if (n < cells || n > cells + heap_size)+    ERR("bad n");+  if (is_marked_used(n)) {+    goto fin;+  }+  num_marked++;+  mark_used(n);+  switch (tag) {+#if GCRED+   case T_INT:+#if INTTABLE+    if (LOW_INT <= (val = GETVALUE(n)) && val < HIGH_INT) {+      SETTAG(n, T_IND);+      INDIR(n) = intTable[val - LOW_INT];+      red_int++;+      goto top;+    }+    break;+#endif  /* INTTABLE */+   case T_AP:+      if (want_gc_red) {+        /* This is really only fruitful just after parsing.  It can be removed. */+        if (GETTAG(FUN(n)) == T_AP && GETTAG(FUN(FUN(n))) == T_A) {+          /* Do the A x y --> y reduction */+          NODEPTR y = ARG(n);+          SETTAG(n, T_IND);+          INDIR(n) = y;+          red_a++;+          goto top;+        }+#if 0+        /* This never seems to happen */+        if (GETTAG(FUN(n)) == T_AP && GETTAG(FUN(FUN(n))) == T_K) {+          /* Do the K x y --> x reduction */+          NODEPTR x = ARG(FUN(n));+          SETTAG(n, T_IND);+          INDIR(n) = x;+          red_k++;+          goto top;+        }+#endif  /* 0 */+        if (GETTAG(FUN(n)) == T_I) {+          /* Do the I x --> x reduction */+          NODEPTR x = ARG(n);+          SETTAG(n, T_IND);+          INDIR(n) = x;+          red_i++;+          goto top;+        }+#if 1+        /* This is broken.+         * Probably because it can happen in the middle of the C reduction code.+         */+        if (GETTAG(FUN(n)) == T_C) {+          NODEPTR q = ARG(n);+          enum node_tag tt, tf;+          while ((tt = GETTAG(q)) == T_IND)+            q = INDIR(q);+          if ((tf = flip_ops[tt])) {+            /* Do the C op --> flip_op reduction */+            // PRINT("%s -> %s\n", tag_names[tt], tag_names[tf]);+            SETTAG(n, T_IND);+            INDIR(n) = HEAPREF(tf);+            red_flip++;+            goto fin;+          }+        }+      }+#endif+#else   /* GCRED */+   case T_AP:+#endif  /* GCRED */+    /* Avoid tail recursion */+    np = &FUN(n);+    to_push = &ARG(n);+    break;+   case T_ARR:+    {+      struct ioarray *arr = ARR(n);++      // arr->marked records marking progress through arr.+      if (arr->marked >= arr->size) {+        goto fin;+      }+      // We unmark the array as a whole and push it as long+      // as there's more entries to scan.+      mark_unused(n);+      to_push = np;+      np = &arr->array[arr->marked++];+      break;+    }+   default: goto fin;+  }+  if (!is_marked_used(*to_push)) {+    //  mark_depth++;+    PUSH((NODEPTR)to_push);+  }+  goto top;+ fin:+  //  if (mark_depth > max_mark_depth) {+  //    max_mark_depth = mark_depth;+  //  }+  //  mark_depth--;+  if (stack_ptr > stk) {+    np = (NODEPTR *)POPTOP();+    goto top;+  }+  return;+}++/* Perform a garbage collection:+   - First mark from all roots; roots are on the stack.+*/+void+gc(void)+{+  stackptr_t i;+  struct ioarray **arrp, *arr;++  num_gc++;+  num_marked = 0;+#if WANT_STDIO+  if (verbose > 1)+    PRINT("gc mark\n");+#endif+  gc_mark_time -= GETTIMEMILLI();+  mark_all_free();+  //  mark_depth = 0;+  for (i = 0; i <= stack_ptr; i++)+    mark(&stack[i]);+  gc_mark_time += GETTIMEMILLI();++  if (num_marked > max_num_marked)+    max_num_marked = num_marked;+  num_free = heap_size - heap_start - num_marked;+  if (num_free < heap_size / 50)+    ERR("heap exhausted");++  for (arrp = &array_root; *arrp; ) {+    arr = *arrp;+    if (arr->marked) {+      arr->marked = 0;+      arrp = &arr->next;+    } else {+      *arrp = arr->next;        /* unlink */+      num_arr_free++;+      FREE(arr);                /* and FREE */+    }+  }++#if WANT_STDIO+  if (verbose > 1) {+    PRINT("gc done, %"PRIcounter" free\n", num_free);+    //PRINT(" GC reductions A=%d, K=%d, I=%d, int=%d flip=%d\n", red_a, red_k, red_i, red_int, red_flip);+  }+#endif  /* !WANT_STDIO */+}++/* Check that there are k nodes available, if not then GC. */+static INLINE void+gc_check(size_t k)+{+  if (k < num_free)+    return;+#if WANT_STDIO+  if (verbose > 1)+    PRINT("gc_check: %d\n", (int)k);+#endif+  gc();+}++value_t+peekWord(value_t *p)+{+  return *p;+}++void+pokeWord(value_t *p, value_t w)+{+  *p = w;+}++value_t+peekByte(uint8_t *p)+{+  return *p;+}++void+pokeByte(uint8_t *p, value_t w)+{+  *p = (uint8_t)w;+}++/*+ * Table of FFI callable functions.+ * (For a more flexible solution use dlopen()/dlsym()/dlclose())+ * The table contains the information needed to do the actual call.+ *   V    void+ *   I    value_t+ *   i    int+ *   D    flt_t+ *   P    void*+ * The types are+ *   V    void    name(void)+ *   i    int     name(void)+ *   I    value_t name(voi)+ *   IV   void    name(value_t)+ *   II   value_t name(value_t)+ *   IIV  void    name(value_t, value_t)+ *   III  value_t name(value_t, value_t)+ *   DD   flt_t  name(flt_t)+ *   Pi   int     name(void*)+ *   PI   value_t name(void*)+ *   PP   void*   name(void*)+ *   iPi  int     name(int, void*)+ *   PPI  value_t name(void*, void*)+ *   PPP  void*   name(void*, void*)+ * more can easily be added.+ */+struct ffi_info {+  const char *ffi_name;+  const funptr_t ffi_fun;+  const enum { FFI_V, FFI_I, FFI_IV, FFI_II, FFI_IIV, FFI_III, FFI_DD, FFI_DDD, FFI_PI,+               FFI_i, FFI_Pi, FFI_iPi, FFI_PIIPI, FFI_PIV, FFI_IIP,+               FFI_PPI, FFI_PP, FFI_PPP, FFI_IPI, FFI_PV, FFI_IP, FFI_PPV, FFI_PPzV,+               FFI_iPV,+  } ffi_how;+};+const struct ffi_info ffi_table[] = {+#if WORD_SIZE == 64+  { "llabs",    (funptr_t)llabs,   FFI_II },+#elif WORD_SIZE == 32  /* WORD_SIZE */+  { "llabs",    (funptr_t)labs,    FFI_II },+#elif WORD_SIZE == 16  /* WORD_SIZE */+  { "llabs",    (funptr_t)abs,    FFI_II },+#else+#error Unknown WORD_SIZE+#endif  /* WORD_SIZE */+#if WANT_MATH+#if WORD_SIZE == 64+  { "log",      (funptr_t)log,     FFI_DD },+  { "exp",      (funptr_t)exp,     FFI_DD },+  { "sqrt",     (funptr_t)sqrt,    FFI_DD },+  { "sin",      (funptr_t)sin,     FFI_DD },+  { "cos",      (funptr_t)cos,     FFI_DD },+  { "tan",      (funptr_t)tan,     FFI_DD },+  { "asin",     (funptr_t)asin,    FFI_DD },+  { "acos",     (funptr_t)acos,    FFI_DD },+  { "atan",     (funptr_t)atan,    FFI_DD },+  { "atan2",    (funptr_t)atan2,   FFI_DDD },+#elif WORD_SIZE == 32  /* WORD_SIZE */+  { "log",      (funptr_t)logf,    FFI_DD },+  { "exp",      (funptr_t)expf,    FFI_DD },+  { "sqrt",     (funptr_t)sqrtf,   FFI_DD },+  { "sin",      (funptr_t)sinf,    FFI_DD },+  { "cos",      (funptr_t)cosf,    FFI_DD },+  { "tan",      (funptr_t)tanf,    FFI_DD },+  { "asin",     (funptr_t)asinf,   FFI_DD },+  { "acos",     (funptr_t)acosf,   FFI_DD },+  { "atan",     (funptr_t)atanf,   FFI_DD },+  { "atan2",    (funptr_t)atan2f,  FFI_DDD },  +#else+#error Unknown WORD_SIZE+#endif  /* WORD_SIZE */+#endif  /* WANT_MATH */+  { "getenv",   (funptr_t)getenv,  FFI_PP },++  { "getRaw",   (funptr_t)GETRAW,  FFI_i },+#if WANT_STDIO+  { "fgetc",    (funptr_t)fgetc,   FFI_Pi },+  { "fputc",    (funptr_t)fputc,   FFI_iPi },+  //  { "cprint",   (funptr_t)cprint,  FFI_PAV },+  //  { "serialize",(funptr_t)serialize,  FFI_PAV },+  //  { "deserialize",(funptr_t)deserialize,  FFI_PA },+  { "fclose",   (funptr_t)fclose,  FFI_Pi },+  { "fflush",   (funptr_t)fflush,  FFI_Pi },+  { "fopen",    (funptr_t)fopen,   FFI_PPP },+  { "fread",    (funptr_t)fread,   FFI_PIIPI },+  { "fwrite",   (funptr_t)fwrite,  FFI_PIIPI },+  { "tmpname",  (funptr_t)TMPNAME, FFI_PPP },+  { "unlink",   (funptr_t)unlink,  FFI_Pi },+  { "system",   (funptr_t)system,  FFI_Pi },++  /* BFILE stuff */+  { "add_FILE", (funptr_t)add_FILE,FFI_PP },+  { "getb",     (funptr_t)getb,    FFI_Pi },+  { "putb",     (funptr_t)putb,    FFI_iPV },+  { "closeb",   (funptr_t)closeb,  FFI_PV },+  { "flushb",   (funptr_t)flushb,  FFI_PV },+  { "putsb",    (funptr_t)putsb,   FFI_PPV },+  { "add_utf8", (funptr_t)add_utf8,FFI_PP },+#endif  /* WANT_STDIO */++#if WANT_MD5+  { "md5BFILE", (funptr_t)md5BFILE, FFI_PPV },+  { "md5String",(funptr_t)md5String, FFI_PPV },+  { "md5Array", (funptr_t)md5Array, FFI_PPzV },+#endif++  { "iswindows",(funptr_t)iswindows, FFI_I },++  //  { "getArgs",   (funptr_t)getArgs,  FFI_A },+  { "getTimeMilli",(funptr_t)GETTIMEMILLI,  FFI_I },+  { "free",     (funptr_t)FREE,    FFI_PV },+  { "malloc",   (funptr_t)MALLOC,  FFI_IP }, /* The I is really a size_t */+  { "calloc",   (funptr_t)MALLOC,  FFI_IIP },+  { "peekWord", (funptr_t)peekWord,FFI_PI },+  { "pokeWord", (funptr_t)pokeWord,FFI_PIV },+  { "peekByte", (funptr_t)peekByte,FFI_PI },+  { "pokeByte", (funptr_t)pokeByte,FFI_PIV },+  { "memcpy",   (funptr_t)memcpy,  FFI_PPzV },+  { "memmove",  (funptr_t)memmove, FFI_PPzV },+#if defined(FFI_EXTRA)+FFI_EXTRA+#endif  /* defined(FFI_EXTRA) */+};++/* Look up an FFI function by name */+value_t+lookupFFIname(const char *name)+{+  size_t i;++  for(i = 0; i < sizeof(ffi_table) / sizeof(ffi_table[0]); i++)+    if (strcmp(ffi_table[i].ffi_name, name) == 0)+      return (value_t)i;+  return -1;+}++NODEPTR+ffiNode(const char *buf)+{+  NODEPTR r;+  value_t i = lookupFFIname(buf);+  char *fun;++  if (i < 0) {+    /* lookup failed, generate a node that will dynamically generate an error */+    r = alloc_node(T_BADDYN);+    fun = MALLOC(strlen(buf) + 1);+    strcpy(fun, buf);+    CSTR(r) = fun;+  } else {+    r = alloc_node(T_IO_CCALL);+    SETVALUE(r, i);+  }+  return r;+}++/* If the next input character is c, then consume it, else leave it alone. */+int+gobble(BFILE *f, int c)+{+  int d = getb(f);+  if (c == d) {+    return 1;+  } else {+    ungetb(d, f);+    return 0;+  }+}++/* Get a non-terminating character.  ' ' and '\n' terminates a token. */+int+getNT(BFILE *f)+{+  int c;+  +  c = getb(f);+  if (c == ' ' || c == '\n') {+    return 0;+  } else {+    return c;+  }+}++value_t+parse_int(BFILE *f)+{+  // Parse using uvalue_t, which wraps on overflow.+  uvalue_t i = 0;+  int neg = 1;+  int c = getb(f);+  if (c == '-') {+    neg = -1;+    c = getb(f);+  }+  for(;;) {+    i = i * 10 + (c - '0');+    c = getb(f);+    if (c < '0' || c > '9') {+      ungetb(c, f);+      break;+    }+  }+  // Multiply by neg without triggering undefined behavior.+  return (value_t)(((uvalue_t)neg) * i);+}++#if WANT_FLOAT+flt_t+parse_double(BFILE *f)+{+  // apparently longest float, when rendered, takes up 24 characters. We add one more for a potential+  // minus sign, and another one for the final null terminator.+  // https://stackoverflow.com/questions/1701055/what-is-the-maximum-length-in-chars-needed-to-represent-any-double-value+  char buf[26];+  for(int j = 0; (buf[j] = getNT(f)); j++)+    ;++  return strtod(buf, NULL);+}+#endif++NODEPTR+mkStrNode(struct ustring *str)+{+  NODEPTR n = alloc_node(T_STR);+  STR(n) = str;+  return n;+}++NODEPTR mkInt(value_t i);+NODEPTR mkFlt(flt_t d);+NODEPTR mkPtr(void* p);++/* Table of labelled nodes for sharing during parsing. */+struct shared_entry {+  heapoffs_t label;+  NODEPTR node;                 /* NIL indicates unused */+} *shared_table;+heapoffs_t shared_table_size;++/* Look for the label in the table.+ * If it's found, return the node.+ * If not found, return the first empty entry.+*/+NODEPTR *+find_label(heapoffs_t label)+{+  int i;++  for(i = (int)label; ; i++) {+    i %= shared_table_size;+    if (shared_table[i].node == NIL) {+      /* The slot is empty, so claim and return it */+      shared_table[i].label = label;+      return &shared_table[i].node;+    } else if (shared_table[i].label == label) {+      /* Found the label, so return it. */+      return &shared_table[i].node;+    }+    /* Not empty and not found, try next. */+  }+}++struct ustring *+parse_string(BFILE *f)+{+  size_t sz = 20;+  struct ustring *buffer = MALLOC(sizeof(struct ustring) + sz);+  size_t i;+  int c;++  if (!buffer)+    memerr();+  for(i = 0;;) {+    c = getb(f);+    if (c == '"')+      break;+    if (i >= sz) {+      sz *= 2;+      buffer = realloc(buffer, sizeof(struct ustring) + sz);+      if (!buffer)+        memerr();+    }+    if (c == '\\') {+      buffer->string[i++] = (char)parse_int(f);+      if (!gobble(f, '&'))+        ERR("parse string");+    } else {+      buffer->string[i++] = c;+    }+  }+  buffer->size = i;+  buffer->string[i++] = 0;+  return realloc(buffer, sizeof(struct ustring) + i);+}++NODEPTR+parse(BFILE *f)+{+  stackptr_t stk = stack_ptr;+  NODEPTR r, x, y;+  NODEPTR *nodep;+  heapoffs_t l;+  value_t i;+  int c;+  size_t j;+  char buf[80];                 /* store names of primitives. */++  for(;;) {+    c = getb(f);+    if (c < 0) ERR("parse EOF");+    switch (c) {+    case ' ':+    case '\n':+      continue;+    }+    GCCHECK(1);+    switch(c) {+    case '@':+      x = TOP(0);+      y = TOP(1);+      POP(2);+      PUSH(new_ap(y, x));+      break;+    case '}':+      x = TOP(0);+      POP(1);+      if (stack_ptr != stk)+        ERR("parse: stack");+      return x;+    case '&':+#if WANT_FLOAT+      r = mkFlt(parse_double(f));+#else+      while (getNT(f))          /* skip the float constant */+        ;+      r = alloc_node(T_DBL);+      SETVALUE(r, 0);+#endif+      PUSH(r);+      break;+    case '#':+      i = parse_int(f);+      r = mkInt(i);+      PUSH(r);+      break;+    case '[':+      {+        size_t sz;+        struct ioarray *arr;+        size_t i;+        sz = (size_t)parse_int(f);+        if (!gobble(f, ']')) ERR("parse arr 1");+        arr = arr_alloc(sz, NIL);+        for (i = 0; i < sz; i++) {+          arr->array[i] = TOP(sz - i - 1);+        }+        r = alloc_node(T_ARR);+        ARR(r) = arr;+        POP(sz);+        PUSH(r);+        break;+      }+    case '_' :+      /* Reference to a shared value: _label */+      l = parse_int(f);  /* The label */+      nodep = find_label(l);+      if (*nodep == NIL) {+        /* Not yet defined, so make it an indirection */+        *nodep = alloc_node(T_IND);+        INDIR(*nodep) = NIL;+      }+      PUSH(*nodep);+      break;+    case ':' :+      /* Define a shared expression: :label e */+      l = parse_int(f);  /* The label */+      if (!gobble(f, ' ')) ERR("parse ' '");+      nodep = find_label(l);+      x = TOP(0);+      if (*nodep == NIL) {+        /* not referenced yet, so add a direct reference */+        *nodep = x;+      } else {+        /* Sanity check */+        if (INDIR(*nodep) != NIL) ERR("shared != NIL");+        INDIR(*nodep) = x;+      }+      break;+    case '"' :+      /* Everything up to the next " is a string.+       * Special characters are encoded as \NNN&,+       * where NNN is the decimal value of the character */+      PUSH(mkStrNode(parse_string(f)));+      break;+#if WANT_TICK+    case '!':+      if (!gobble(f, '"'))+        ERR("parse !");+      i = add_tick_table(parse_string(f));+      r = alloc_node(T_TICK);+      SETVALUE(r, (value_t)i);+      PUSH(r);+      break;+#endif+    case '^':+      /* An FFI name */+      for (j = 0; (buf[j] = getNT(f)); j++)+        ;+      r = ffiNode(buf);+      PUSH(r);+      break;+    default:+      buf[0] = c;+      /* A primitive, keep getting char's until end */+      for (j = 1; (buf[j] = getNT(f)); j++)+        ;+      /* Look up the primop and use the preallocated node. */+      for (j = 0; j < sizeof primops / sizeof primops[0]; j++) {+        if (strcmp(primops[j].name, buf) == 0) {+          r = primops[j].node;+          goto found;+        }+      }+      ERR1("no primop %s", buf);+    found:+      PUSH(r);+      break;+    }+  }+}++void+checkversion(BFILE *f)+{+  char *p = VERSION;+  int c;++  while ((c = *p++)) {+    if (c != getb(f))+      ERR("version mismatch");+  }+  (void)gobble(f, '\r');                 /* allow extra CR */+}++/* Parse a file */+NODEPTR+parse_top(BFILE *f)+{+  heapoffs_t numLabels, i;+  NODEPTR n;+  checkversion(f);+  numLabels = parse_int(f);+  if (!gobble(f, '\n'))+    ERR("size parse");+  gobble(f, '\r');                 /* allow extra CR */+  shared_table_size = 3 * numLabels; /* sparsely populated hashtable */+  shared_table = MALLOC(shared_table_size * sizeof(struct shared_entry));+  if (!shared_table)+    memerr();+  for(i = 0; i < shared_table_size; i++)+    shared_table[i].node = NIL;+  n = parse(f);+  FREE(shared_table);+  return n;+}++#if WANT_STDIO+NODEPTR+parse_file(const char *fn, size_t *psize)+{+  FILE *f = fopen(fn, "r");+  if (!f)+    ERR1("file not found %s", fn);++  /* And parse it */+  BFILE *p = add_FILE(f);+  NODEPTR n = parse_top(p);+  *psize = ftell(f);+  closeb(p);+  return n;+}+#endif  /* WANT_STDIO */++counter_t num_shared;++/* Two bits per node: marked, shared+ * 0, 0   -- not visited+ * 1, 0   -- visited once+ * 1, 1   -- visited more than once+ * 0, 1   -- printed+ */+bits_t *marked_bits;+bits_t *shared_bits;+static INLINE void set_bit(bits_t *bits, NODEPTR n)+{+  heapoffs_t i = LABEL(n);+  bits[i / BITS_PER_WORD] |= (1ULL << (i % BITS_PER_WORD));+}+#if WANT_STDIO+static INLINE void clear_bit(bits_t *bits, NODEPTR n)+{+  heapoffs_t i = LABEL(n);+  bits[i / BITS_PER_WORD] &= ~(1ULL << (i % BITS_PER_WORD));+}+#endif+static INLINE int test_bit(bits_t *bits, NODEPTR n)+{+  heapoffs_t i = LABEL(n);+  return (bits[i / BITS_PER_WORD] & (1ULL << (i % BITS_PER_WORD))) != 0;+}++size_t strNodes(size_t len);+NODEPTR mkStringC(const char *str);++#if WANT_STDIO+void+convdbl(char *str, flt_t x)+{+  /* Using 16 decimals will lose some precision.+   * 17 would keep the precision, but it frequently looks very ugly.+   */+  (void)snprintf(str, 25, "%.16g", x);+  if (strcmp(str, "nan") != 0 && strcmp(str, "-nan") != 0 &&+      strcmp(str, "inf") != 0 && strcmp(str, "-inf") != 0 &&+      !strchr(str, '.') && !strchr(str, 'e') && !strchr(str, 'E')) {+    /* There is no decimal point and no exponent, so add a decimal point */+    strcat(str, ".0");+  }+}++NODEPTR+dblToString(flt_t x)+{+  char str[30];+  convdbl(str, x);+  // turn it into a mhs string+  GCCHECK(strNodes(strlen(str)));+  return mkStringC(str);+}++void+putdblb(flt_t x, BFILE *p)+{+  char str[30];+  convdbl(str, x);+  putsb(str, p);+}++void printrec(BFILE *f, NODEPTR n, int prefix);++/* Mark all reachable nodes, when a marked node is reached, mark it as shared. */+void+find_sharing(NODEPTR n)+{+ top:+  while (GETTAG(n) == T_IND) {+    n = INDIR(n);+  }+  if (n < cells || n >= cells + heap_size) abort();+  //PRINT("find_sharing %p %llu ", n, LABEL(n));+  if (GETTAG(n) == T_AP) {+    if (test_bit(shared_bits, n)) {+      /* Alread marked as shared */+      //PRINT("shared\n");+      ;+    } else if (test_bit(marked_bits, n)) {+      /* Already marked, so now mark as shared */+      //PRINT("marked\n");+      set_bit(shared_bits, n);+      num_shared++;+    } else {+      /* Mark as visited, and recurse */+      //PRINT("unmarked\n");+      set_bit(marked_bits, n);+      find_sharing(FUN(n));+      n = ARG(n);+      goto top;+    }+  } else {+    /* Not an application, so do nothing */+    //PRINT("not T_AP\n");+    ;+  }+}++void+print_string(BFILE *f, struct ustring *p)+{+  putb('"', f);+  for (size_t i = 0; i < p->size; i++) {+    int c = p->string[i];+    if (c == '"' || c == '\\' || c < ' ' || c > '~') {+      putb('\\', f);+      putdecb(c, f);+      putb('&', f);+    } else {+      putb(c, f);+    }+  }+  putb('"', f);+}++/* Recursively print an expression.+   This assumes that the shared nodes has been marked as such.+*/+void+printrec(BFILE *f, NODEPTR n, int prefix)+{+  int share = 0;++  while (GETTAG(n) == T_IND) {+    //putb('*', f);+    n = INDIR(n);+  }++  if (test_bit(shared_bits, n)) {+    /* The node is shared */+    if (test_bit(marked_bits, n)) {+      /* Not yet printed, so emit a label */+      if (prefix) {+        putb(':', f);+        putdecb((value_t)LABEL(n), f);+        putb(' ', f);+      } else {+        share = 1;+      }+      clear_bit(marked_bits, n);  /* mark as printed */+    } else {+      /* This node has already been printed, so just use a reference. */+      putb('_', f);+      putdecb((value_t)LABEL(n), f);+      if (!prefix)+        putb(' ', f);+      return;+    }+  }++  //if (n == atptr) putb('@', f);+  switch (GETTAG(n)) {+  case T_AP:+    if (prefix) {+      putb('(', f);+      printrec(f, FUN(n), prefix);+      putb(' ', f);+      printrec(f, ARG(n), prefix);+      putb(')', f);+    } else {+      printrec(f, FUN(n), prefix);+      printrec(f, ARG(n), prefix);+      putb('@', f);+    }+    break;+  case T_INT: putb('#', f); putdecb(GETVALUE(n), f); break;+  case T_DBL: putb('&', f); putdblb(GETDBLVALUE(n), f); break;+  case T_ARR:+    if (prefix) {+      /* Arrays serialize as '[sz] e_1 ... e_sz' */+      putb('[', f);+      putdecb((value_t)ARR(n)->size, f);+      putb(']', f);+      for(size_t i = 0; i < ARR(n)->size; i++) {+        putb(' ', f);+        printrec(f, ARR(n)->array[i], prefix);+      }+    } else {+      /* Arrays serialize as 'e_1 ... e_sz [sz]' */+      for(size_t i = 0; i < ARR(n)->size; i++) {+        printrec(f, ARR(n)->array[i], prefix);+      }+      putb('[', f);+      putdecb((value_t)ARR(n)->size, f);+      putb(']', f);+    }+    break;+  case T_PTR:+    if (PTR(n) == stdin)+      putsb("IO.stdin", f);+    else if (PTR(n) == stdout)+      putsb("IO.stdout", f);+    else if (PTR(n) == stderr)+      putsb("IO.stderr", f);+    else+      ERR("Cannot serialize pointers");+    break;+  case T_STR:+    print_string(f, STR(n));+    break;+  case T_IO_CCALL: putb('^', f); putsb(ffi_table[GETVALUE(n)].ffi_name, f); break;+  case T_BADDYN: putb('^', f); putsb(CSTR(n), f); break;+  case T_S: putsb("S", f); break;+  case T_K: putsb("K", f); break;+  case T_I: putsb("I", f); break;+  case T_C: putsb("C", f); break;+  case T_B: putsb("B", f); break;+  case T_A: putsb("A", f); break;+  case T_U: putsb("U", f); break;+  case T_Y: putsb("Y", f); break;+  case T_P: putsb("P", f); break;+  case T_R: putsb("R", f); break;+  case T_O: putsb("O", f); break;+  case T_SS: putsb("S'", f); break;+  case T_BB: putsb("B'", f); break;+  case T_Z: putsb("Z", f); break;+  case T_K2: putsb("K2", f); break;+  case T_K3: putsb("K3", f); break;+  case T_K4: putsb("K4", f); break;+  case T_CC: putsb("C'", f); break;+  case T_CCB: putsb("C'B", f); break;+  case T_ADD: putsb("+", f); break;+  case T_SUB: putsb("-", f); break;+  case T_MUL: putsb("*", f); break;+  case T_QUOT: putsb("quot", f); break;+  case T_REM: putsb("rem", f); break;+  case T_UQUOT: putsb("uquot", f); break;+  case T_UREM: putsb("urem", f); break;+  case T_SUBR: putsb("subtract", f); break;+  case T_NEG: putsb("neg", f); break;+  case T_AND: putsb("and", f); break;+  case T_OR: putsb("or", f); break;+  case T_XOR: putsb("xor", f); break;+  case T_INV: putsb("inv", f); break;+  case T_SHL: putsb("shl", f); break;+  case T_SHR: putsb("shr", f); break;+  case T_ASHR: putsb("ashr", f); break;+#if WANT_FLOAT+  case T_FADD: putsb("f+", f); break;+  case T_FSUB: putsb("f-", f); break;+  case T_FMUL: putsb("f*", f); break;+  case T_FDIV: putsb("f/", f); break;+  case T_FNEG: putsb("fneg", f); break;+  case T_ITOF: putsb("itof", f); break;+  case T_FEQ: putsb("f==", f); break;+  case T_FNE: putsb("f/=", f); break;+  case T_FLT: putsb("f<", f); break;+  case T_FLE: putsb("f<=", f); break;+  case T_FGT: putsb("f>", f); break;+  case T_FGE: putsb("f>=", f); break;+  case T_FSHOW: putsb("fshow", f); break;+  case T_FREAD: putsb("fread", f); break;+#endif+  case T_EQ: putsb("==", f); break;+  case T_NE: putsb("/=", f); break;+  case T_LT: putsb("<", f); break;+  case T_LE: putsb("<=", f); break;+  case T_GT: putsb(">", f); break;+  case T_GE: putsb(">=", f); break;+  case T_ULT: putsb("u<", f); break;+  case T_ULE: putsb("u<=", f); break;+  case T_UGT: putsb("u>", f); break;+  case T_UGE: putsb("u>=", f); break;+  case T_PEQ: putsb("p==", f); break;+  case T_PNULL: putsb("pnull", f); break;+  case T_PADD: putsb("p+", f); break;+  case T_PSUB: putsb("p-", f); break;+  case T_ERROR: putsb("error", f); break;+  case T_NODEFAULT: putsb("noDefault", f); break;+  case T_NOMATCH: putsb("noMatch", f); break;+  case T_EQUAL: putsb("equal", f); break;+  case T_COMPARE: putsb("compare", f); break;+  case T_RNF: putsb("rnf", f); break;+  case T_SEQ: putsb("seq", f); break;+  case T_IO_BIND: putsb("IO.>>=", f); break;+  case T_IO_THEN: putsb("IO.>>", f); break;+  case T_IO_RETURN: putsb("IO.return", f); break;+  case T_IO_CCBIND: putsb("IO.C'BIND", f); break;+  case T_IO_SERIALIZE: putsb("IO.serialize", f); break;+  case T_IO_PRINT: putsb("IO.print", f); break;+  case T_IO_DESERIALIZE: putsb("IO.deserialize", f); break;+  case T_IO_GETARGS: putsb("IO.getArgs", f); break;+  case T_IO_GETTIMEMILLI: putsb("IO.getTimeMilli", f); break;+  case T_IO_PERFORMIO: putsb("IO.performIO", f); break;+  case T_IO_CATCH: putsb("IO.catch", f); break;+  case T_ARR_ALLOC: putsb("A.alloc", f); break;+  case T_ARR_SIZE: putsb("A.size", f); break;+  case T_ARR_READ: putsb("A.read", f); break;+  case T_ARR_WRITE: putsb("A.write", f); break;+  case T_ARR_EQ: putsb("A.==", f); break;+  case T_DYNSYM: putsb("dynsym", f); break;+  case T_NEWCASTRINGLEN: putsb("newCAStringLen", f); break;+  case T_PEEKCASTRING: putsb("peekCAString", f); break;+  case T_PEEKCASTRINGLEN: putsb("peekCAStringLen", f); break;+  case T_TOINT: putsb("toInt", f); break;+  case T_TOPTR: putsb("toPtr", f); break;+  case T_TODBL: putsb("toDbl", f); break;+  case T_FROMUTF8: putsb("fromUTF8", f); break;+  case T_TICK:+    putb('!', f);+    print_string(f, tick_table[GETVALUE(n)].tick_name);+    break;+  default: ERR("print tag");+  }+  if (!prefix) {+    putb(' ', f);+    if (share) {+      putb(':', f);+      putdecb((value_t)LABEL(n), f);+      putb(' ', f);+    }+  }+}++/* Serialize a graph to file. */+void+printb(BFILE *f, NODEPTR n, int header)+{+  num_shared = 0;+  marked_bits = calloc(free_map_nwords, sizeof(bits_t));+  if (!marked_bits)+    memerr();+  shared_bits = calloc(free_map_nwords, sizeof(bits_t));+  if (!shared_bits)+    memerr();+  find_sharing(n);+  if (header) {+    putsb(VERSION, f);+    putdecb(num_shared, f);+    putb('\n', f);+  }+  printrec(f, n, !header);+  if (header) {+    putb('}', f);+  }+  FREE(marked_bits);+  FREE(shared_bits);+}++/* Show a graph. */+void+pp(FILE *f, NODEPTR n)+{+  BFILE *bf = add_FILE(f);+  printb(bf, n, 0);+  putb('\n', bf);+  freeb_file(bf);+}++void+ppmsg(const char *msg, NODEPTR n)+{+#if 0+  printf("%s", msg);+  pp(stdout, n);+  printf("\n");+#endif+}++void+dump(const char *msg, NODEPTR at)+{+#if 0+  atptr = at;+  printf("dump: %s\n", msg);+  pp(stdout, *topnode);+#endif+}++#else  /* WANT_STDIO */+NODEPTR+dblToString(flt_t x)+{+  return mkStringC("no dblToString");+}++#endif  /* WANT_STDIO */++NODEPTR+mkInt(value_t i)+{+#if INTTABLE+  if (LOW_INT <= i && i < HIGH_INT) {+    return intTable[i - LOW_INT];+  }+#endif++  NODEPTR n;+  n = alloc_node(T_INT);+  SETVALUE(n, i);+  return n;+}++NODEPTR+mkFlt(flt_t d)+{+  NODEPTR n;+  n = alloc_node(T_DBL);+  SETDBLVALUE(n, d);+  return n;+}++NODEPTR+mkPtr(void* p)+{+  NODEPTR n;+  n = alloc_node(T_PTR);+  PTR(n) = p;+  return n;+}++static INLINE NODEPTR+mkNil(void)+{+  return combFalse;+}++static INLINE NODEPTR+mkCons(NODEPTR x, NODEPTR xs)+{+  return new_ap(new_ap(combCons, x), xs);+}++size_t+strNodes(size_t len)+{+  /* Each character will need a CHAR node and a CONS node, a CONS uses 2 T_AP nodes */+  len *= (1 + 2);+  /* And each string will need a NIL */+  len += 1;+  return len;+}++/* Turn a C string into a combinator string */+NODEPTR+mkString(const char *astr, size_t len)+{+  NODEPTR n, nc;+  size_t i;+  const unsigned char *str = (unsigned char*)astr; /* no sign bits, please */++  n = mkNil();+  for(i = len; i > 0; i--) {+    nc = mkInt(str[i-1]);+    n = mkCons(nc, n);+  }+  return n;+}++NODEPTR+mkStringC(const char *str)+{+  return mkString(str, strlen(str));+}++NODEPTR+mkStringU(struct ustring *str)+{+  BFILE *ubuf = add_utf8(openb_buf(str->string, str->size));+  NODEPTR n, *np, nc;++  n = mkNil();+  np = &n;+  for(;;) {+    int c = getb(ubuf);+    if (c < 0)+      break;+    nc = mkInt(c);+    *np = mkCons(nc, *np);+    np = &ARG(*np);+  }+  closeb(ubuf);+  return n;+}++NODEPTR evali(NODEPTR n);++/* Follow indirections */+static INLINE NODEPTR+indir(NODEPTR *np)+{+  NODEPTR n = *np;+  while (GETTAG(n) == T_IND)+    n = INDIR(n);+  *np = n;+  return n;+}++/* Evaluate to an INT */+static INLINE value_t+evalint(NODEPTR n)+{+  n = evali(n);+#if SANITY+  if (GETTAG(n) != T_INT) {+    ERR1("evalint, bad tag %d", GETTAG(n));+  }+#endif+  return GETVALUE(n);+}++/* Evaluate to a Flt_T */+static INLINE flt_t+evaldbl(NODEPTR n)+{+  n = evali(n);+#if SANITY+  if (GETTAG(n) != T_DBL) {+    ERR1("evaldbl, bad tag %d", GETTAG(n));+  }+#endif+  return GETDBLVALUE(n);+}++/* Evaluate to a T_PTR */+void *+evalptr(NODEPTR n)+{+  n = evali(n);+#if SANITY+  if (GETTAG(n) != T_PTR) {+    ERR1("evalptr, bad tag %d", GETTAG(n));+  }+#endif+  return PTR(n);+}++/* Evaluate a string, returns a newly allocated buffer. */+/* XXX this is cheating, should use continuations */+/* XXX the malloc()ed string is leaked if we yield in here. */+char *+evalstring(NODEPTR n, value_t *lenp)+{+  size_t sz = 100;+  char *name = MALLOC(sz);+  size_t offs;+  uvalue_t c;+  NODEPTR x;++  if (!name)+    memerr();+  for (offs = 0;;) {+    if (offs >= sz - 4) {+      sz *= 2;+      name = realloc(name, sz);+      if (!name)+        memerr();+    }+    n = evali(n);+    if (GETTAG(n) == T_K)            /* Nil */+      break;+    else if (GETTAG(n) == T_AP && GETTAG(x = indir(&FUN(n))) == T_AP && GETTAG(indir(&FUN(x))) == T_O) { /* Cons */+      PUSH(n);                  /* protect from GC */+      c = (uvalue_t)evalint(ARG(x));+      n = POPTOP();+      /* XXX Encode as UTF8 */+      if (c < 0x80) {+        name[offs++] = (char)c;+      } else if (c < 0x800) {+        name[offs++] = ((c >> 6 )       ) | 0xc0;+        name[offs++] = ((c      ) & 0x3f) | 0x80;+      } else if (c < 0x10000) {+        name[offs++] = ((c >> 12)       ) | 0xe0;+        name[offs++] = ((c >> 6 ) & 0x3f) | 0x80;+        name[offs++] = ((c      ) & 0x3f) | 0x80;+      } else if (c < 0x110000) {+        name[offs++] = ((c >> 18)       ) | 0xf0;+        name[offs++] = ((c >> 12) & 0x3f) | 0x80;+        name[offs++] = ((c >> 6 ) & 0x3f) | 0x80;+        name[offs++] = ((c      ) & 0x3f) | 0x80;+      } else {+	ERR("invalid char");+      }+      n = ARG(n);+    } else {+      ERR("evalstring not Nil/Cons");+    }+  }+  name[offs] = 0;+  if (lenp)+    *lenp = (value_t)offs;+  return name;+}++/* Compares anything, but really only works well on strings.+ * if p < q  return -1+ * if p > q  return 1+ * if p == q return 0+ *+ * As we compare we update the argument pointers with any+ * progress we make, in case we are interruped and resume from the top.+ *+ * XXX This is a rather dodgy comparison, since we are comparing+ * functions, and the same data type could plausibly get different+ * functions in the Scott encoding.+ * But we only use it for lists, and it seems to work fine.+ */+int+compare(NODEPTR cmp)+{+  stackptr_t stk = stack_ptr;+#define CRET(x) do { stack_ptr = stk; return (x); } while(0)+  value_t x, y;+  flt_t xd, yd;+  void *f, *g;+  NODEPTR p, q;+  NODEPTR *ap, *aq;+  enum node_tag ptag, qtag;++  /* Since FUN(cmp) can be shared, allocate a copy for it. */+  GCCHECK(1);+  FUN(cmp) = new_ap(FUN(FUN(cmp)), ARG(FUN(cmp)));+  aq = &ARG(cmp);+  ap = &ARG(FUN(cmp));++  PUSH(*ap);+  PUSH(*aq);+  for(;;) {+    if (stk == stack_ptr)+      return 0;+    q = evali(TOP(0));+    p = evali(TOP(1));+    POP(2);+    if (stk == stack_ptr) {+      /* We have made some progress, save this in the compare node. */+      *ap = p;+      *aq = q;+    }++    ptag = GETTAG(p);+    qtag = GETTAG(q);+    if (ptag != qtag) {+      /* Hack to make Nil < Cons */+      if (ptag == T_K && qtag == T_AP)+        CRET(-1);+      if (ptag == T_AP && qtag == T_K)+        CRET(1);+      CRET(ptag < qtag ? -1 : 1);+    }+    switch (ptag) {+    case T_AP:+      PUSH(ARG(p));             /* compare arg part later */+      PUSH(ARG(q));+      PUSH(FUN(p));             /* compare fun part now */+      PUSH(FUN(q));+      break;+    case T_INT:+    case T_IO_CCALL:+      x = GETVALUE(p);+      y = GETVALUE(q);+      if (x < y)+        CRET(-1);+      if (x > y)+        CRET(1);+      break;+    case T_DBL:+      xd = GETDBLVALUE(p);+      yd = GETDBLVALUE(q);+      if (xd < yd)+        CRET(-1);+      if (xd > yd)+        CRET(1);+      break;+    case T_PTR:+      f = PTR(p);+      g = PTR(q);+      if (f < g)+        CRET(-1);+      if (f > g)+        CRET(1);+      break;+    case T_ARR:+      if (ARR(p) < ARR(q))+        CRET(-1);+      if (ARR(p) > ARR(q))+        CRET(1);+      break;+    default:+      break;+    }+  }+#undef CRET+}++bits_t *rnf_bits;++void+rnf_rec(NODEPTR n)+{+ top:+  if (test_bit(rnf_bits, n))+    return;+  set_bit(rnf_bits, n);+  n = evali(n);+  if (GETTAG(n) == T_AP) {+    PUSH(ARG(n));               /* protect from GC */+    rnf_rec(FUN(n));+    n = POPTOP();+    goto top;+  }+}++/* This is a yucky hack */+int doing_rnf = 0;++void+rnf(value_t noerr, NODEPTR n)+{+  /* Mark visited nodes to avoid getting stuck in loops. */+  rnf_bits = calloc(free_map_nwords, sizeof(bits_t));+  if (!rnf_bits)+    memerr();+  if (doing_rnf)+    ERR("recursive rnf()");+  doing_rnf = (int)noerr;+  rnf_rec(n);+  doing_rnf = 0;+  FREE(rnf_bits);+}++void execio(NODEPTR *);++/* Evaluate a node, returns when the node is in WHNF. */+NODEPTR+evali(NODEPTR an)+{+  NODEPTR n = an;+  stackptr_t stk = stack_ptr;+  NODEPTR x, y, z, w;+  value_t xi, yi, r;+  void *xp, *yp;+#if WANT_FLOAT+  flt_t xd, yd, rd;+#endif  /* WANT_FLOAT */+  char *msg;+#if FASTTAGS+  heapoffs_t l;+#endif++/* Reset stack pointer and return. */+#define RET do { goto ret; } while(0)+/* Check that there are at least n arguments, return if not. */+#define CHECK(n) do { if (stack_ptr - stk < (n)) RET; } while(0)++#define SETIND(n, x) do { SETTAG((n), T_IND); INDIR((n)) = (x); } while(0)+#define GOIND(x) do { SETIND(n, (x)); goto ind; } while(0)+#define GOAP(f,a) do { FUN((n)) = (f); ARG((n)) = (a); goto ap; } while(0)+/* CHKARGN checks that there are at least N arguments.+ * It also+ *  - sets n to the "top" node+ *  - set x, y, ... to the arguments+ *  - pops N stack elements+ * NOTE: No GC is allowed after these, since the stack has been popped.+ */+#define CHKARG0 do { } while(0)+#define CHKARG1 do { CHECK(1); POP(1); n = TOP(-1); x = ARG(n); } while(0)+#define CHKARG2 do { CHECK(2); POP(2); n = TOP(-1); y = ARG(n); x = ARG(TOP(-2)); } while(0)+#define CHKARG3 do { CHECK(3); POP(3); n = TOP(-1); z = ARG(n); y = ARG(TOP(-2)); x = ARG(TOP(-3)); } while(0)+#define CHKARG4 do { CHECK(4); POP(4); n = TOP(-1); w = ARG(n); z = ARG(TOP(-2)); y = ARG(TOP(-3)); x = ARG(TOP(-4)); } while(0)++/* Alloc a possible GC action, e, between setting x and popping */+#define CHKARGEV1(e)   do { CHECK(1); x = ARG(TOP(0)); e; POP(1); n = TOP(-1); } while(0)++#define SETINT(n,r)    do { SETTAG((n), T_INT); SETVALUE((n), (r)); } while(0)+#define SETDBL(n,d)    do { SETTAG((n), T_DBL); SETDBLVALUE((n), (d)); } while(0)+#define SETPTR(n,r)    do { SETTAG((n), T_PTR); PTR(n) = (r); } while(0)+#define OPINT1(e)      do { CHECK(1); xi = evalint(ARG(TOP(0)));                            e; POP(1); n = TOP(-1); } while(0);+#define OPINT2(e)      do { CHECK(2); xi = evalint(ARG(TOP(0))); yi = evalint(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);+#define OPDBL1(e)      do { CHECK(1); xd = evaldbl(ARG(TOP(0)));                            e; POP(1); n = TOP(-1); } while(0);+#define OPDBL2(e)      do { CHECK(2); xd = evaldbl(ARG(TOP(0))); yd = evaldbl(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);+#define OPPTR2(e)      do { CHECK(2); xp = evalptr(ARG(TOP(0))); yp = evalptr(ARG(TOP(1))); e; POP(2); n = TOP(-1); } while(0);+#define ARITHUNU(op)    do { OPINT1(r = (value_t)(op (uvalue_t)xi)); SETINT(n, r); RET; } while(0)+#define ARITHBIN(op)   do { OPINT2(r = xi op yi); SETINT(n, r); RET; } while(0)+#define ARITHBINU(op)  do { OPINT2(r = (value_t)((uvalue_t)xi op (uvalue_t)yi)); SETINT(n, r); RET; } while(0)+#define FARITHUN(op)   do { OPDBL1(rd = op xd); SETDBL(n, rd); RET; } while(0)+#define FARITHBIN(op)  do { OPDBL2(rd = xd op yd); SETDBL(n, rd); RET; } while(0)+#define CMP(op)        do { OPINT2(r = xi op yi); GOIND(r ? combTrue : combFalse); } while(0)+#define CMPF(op)       do { OPDBL2(r = xd op yd); GOIND(r ? combTrue : combFalse); } while(0)+#define CMPU(op)       do { OPINT2(r = (uvalue_t)xi op (uvalue_t)yi); GOIND(r ? combTrue : combFalse); } while(0)+#define CMPP(op)       do { OPPTR2(r = xp op yp); GOIND(r ? combTrue : combFalse); } while(0)++  for(;;) {+    enum node_tag tag;+    struct ioarray *arr;+    int sz;+    char *res;++    COUNT(num_reductions);+#if FASTTAGS+    l = LABEL(n);+    tag = l < T_IO_BIND ? l : GETTAG(n);+#else   /* FASTTAGS */+    tag = GETTAG(n);+#endif  /* FASTTAGS */+    switch (tag) {+    ind:+    case T_IND:  n = INDIR(n); break;++    ap:+    case T_AP:   PUSH(n); n = FUN(n); break;++    case T_STR:  RET;+    case T_INT:  RET;+    case T_DBL:  RET;+    case T_PTR:  RET;+    case T_ARR:  RET;+    case T_BADDYN: ERR1("FFI unknown %s", CSTR(n));++    case T_S:    GCCHECK(2); CHKARG3; GOAP(new_ap(x, z), new_ap(y, z));                     /* S x y z = x z (y z) */+    case T_SS:   GCCHECK(3); CHKARG4; GOAP(new_ap(x, new_ap(y, w)), new_ap(z, w));          /* S' x y z w = x (y w) (z w) */+    case T_K:                CHKARG2; GOIND(x);                                             /* K x y = *x */+    case T_A:                CHKARG2; GOIND(y);                                             /* A x y = *y */+    case T_U:                CHKARG2; GOAP(y, x);                                           /* U x y = y x */+    case T_I:                CHKARG1; GOIND(x);                                             /* I x = *x */+    case T_Y:                CHKARG1; GOAP(x, n);                                           /* n@(Y x) = x n */+    case T_B:    GCCHECK(1); CHKARG3; GOAP(x, new_ap(y, z));                                /* B x y z = x (y z) */+    case T_BB:   GCCHECK(2); CHKARG4; GOAP(new_ap(x, y), new_ap(z, w));                     /* B' x y z w = x y (z w) */+    case T_Z:                CHKARG3; GOAP(x, y);                                           /* Z x y z = x y */+    case T_C:    GCCHECK(1); CHKARG3; GOAP(new_ap(x, z), y);                                /* C x y z = x z y */+    case T_CC:   GCCHECK(2); CHKARG4; GOAP(new_ap(x, new_ap(y, w)), z);                     /* C' x y z w = x (y w) z */+    case T_P:    GCCHECK(1); CHKARG3; GOAP(new_ap(z, x), y);                                /* P x y z = z x y */+    case T_R:    GCCHECK(1); CHKARG3; GOAP(new_ap(y, z), x);                                /* R x y z = y z x */+    case T_O:    GCCHECK(1); CHKARG4; GOAP(new_ap(w, x), y);                                /* O x y z w = w x y */+    case T_K2:               CHKARG3; GOIND(x);                                             /* K2 x y z = *x */+    case T_K3:               CHKARG4; GOIND(x);                                             /* K3 x y z w = *x */+    case T_K4:               CHECK(5); POP(5); n = TOP(-1); x = ARG(TOP(-5)); GOIND(x);     /* K4 x y z w v = *x */+    case T_CCB:  GCCHECK(2); CHKARG4; GOAP(new_ap(x, z), new_ap(y, w));                     /* C'B x y z w = x z (y w) */++    case T_ADD:  ARITHBINU(+);+    case T_SUB:  ARITHBINU(-);+    case T_MUL:  ARITHBINU(*);+    case T_QUOT: ARITHBIN(/);+    case T_REM:  ARITHBIN(%);+    case T_SUBR: OPINT2(r = yi - xi); SETINT(n, r); RET;+    case T_UQUOT: ARITHBINU(/);+    case T_UREM:  ARITHBINU(%);+    case T_NEG:  ARITHUNU(-);+    case T_AND:  ARITHBIN(&);+    case T_OR:   ARITHBIN(|);+    case T_XOR:  ARITHBIN(^);+    case T_INV:  ARITHUNU(~);+    case T_SHL:  ARITHBIN(<<);+    case T_SHR:  ARITHBINU(>>);+    case T_ASHR: ARITHBIN(>>);++#if WANT_FLOAT+    case T_FADD: FARITHBIN(+);+    case T_FSUB: FARITHBIN(-);+    case T_FMUL: FARITHBIN(*);+    case T_FDIV: FARITHBIN(/);+    case T_FNEG: FARITHUN(-);+    case T_ITOF: OPINT1(rd = (flt_t)xi); SETDBL(n, rd); RET;+    case T_FEQ: CMPF(==);+    case T_FNE: CMPF(!=);+    case T_FLT: CMPF(<);+    case T_FLE: CMPF(<=);+    case T_FGT: CMPF(>);+    case T_FGE: CMPF(>=);+    case T_FREAD:+      CHECK(1);+      msg = evalstring(ARG(TOP(0)), 0);+#if WORD_SIZE == 64+      xd = strtod(msg, NULL);+#elif WORD_SIZE == 32+      xd = strtof(msg, NULL);+#else+#error Unknown WORD_SIZE+#endif+      FREE(msg);+      POP(1);+      n = TOP(-1);+      SETDBL(n, xd);+      RET;++    case T_FSHOW:+      CHECK(1);+      xd = evaldbl(ARG(TOP(0)));+      POP(1);+      n = TOP(-1);+      GOIND(dblToString(xd));+#endif  /* WANT_FLOAT */++    /* Retag a word sized value, keeping the value bits */+#define CONV(t) do { CHECK(1); x = evali(ARG(TOP(0))); n = POPTOP(); SETTAG(n, t); SETVALUE(n, GETVALUE(x)); RET; } while(0)+    case T_TODBL: CONV(T_DBL);+    case T_TOINT: CONV(T_INT);+    case T_TOPTR: CONV(T_PTR);+#undef CONV++    case T_EQ:   CMP(==);+    case T_NE:   CMP(!=);+    case T_LT:   CMP(<);+    case T_LE:   CMP(<=);+    case T_GT:   CMP(>);+    case T_GE:   CMP(>=);+    case T_ULT:  CMPU(<);+    case T_ULE:  CMPU(<=);+    case T_UGT:  CMPU(>);+    case T_UGE:  CMPU(>=);++    case T_PEQ:  CMPP(==);+    case T_PNULL: SETTAG(n, T_PTR); PTR(n) = 0; RET;+    case T_PADD: CHECK(2); xp = evalptr(ARG(TOP(0))); yi = evalint(ARG(TOP(1))); POP(2); n = TOP(-1); SETPTR(n, (char*)xp + yi); RET;+    case T_PSUB: CHECK(2); xp = evalptr(ARG(TOP(0))); yp = evalptr(ARG(TOP(1))); POP(2); n = TOP(-1); SETINT(n, (char*)xp - (char*)yp); RET;++    case T_ARR_EQ:+      {+        CHECK(2);+        x = evali(ARG(TOP(0)));+        arr = ARR(x);+        y = evali(ARG(TOP(1)));+        POP(2);+        n = TOP(-1);+        GOIND(arr == ARR(y) ? combTrue : combFalse);+      }++    case T_FROMUTF8:+      if (doing_rnf) RET;+      CHECK(1);+      x = evali(ARG(TOP(0)));+      if (GETTAG(x) != T_STR) ERR("FROMUTF8");+      POP(1);+      n = TOP(-1);+      GCCHECK(strNodes(STR(x)->size));+      GOIND(mkStringU(STR(x)));++    case T_NOMATCH:+      if (doing_rnf) RET;+      {+      CHECK(3);+      msg = evalstring(ARG(TOP(0)), 0);+      xi = evalint(ARG(TOP(1)));+      yi = evalint(ARG(TOP(2)));+      sz = strlen(msg) + 100;+      res = MALLOC(sz);+#if WANT_STDIO+      snprintf(res, sz, "no match at %s, line %"PRIvalue", col %"PRIvalue, msg, xi, yi);+#else  /* WANT_STDIO */+      strcpy(res, "no match");+#endif  /* WANT_STDIO */+      POP(2);+      GCCHECK(strNodes(strlen(res)));+      ARG(TOP(0)) = mkStringC(res);+      FREE(res);+      FREE(msg);+      goto err;                 /* XXX not right message if the error is caught */+      }+    case T_NODEFAULT:+      if (doing_rnf) RET;+      {+      CHECK(1);+      msg = evalstring(ARG(TOP(0)), 0);+      sz = strlen(msg) + 100;+      res = MALLOC(sz);++#if WANT_STDIO+      snprintf(res, sz, "no default for %s", msg);+#else  /* WANT_STDIO */+      strcpy(res, "no default");+#endif  /* WANT_STDIO */+      GCCHECK(strNodes(strlen(res)));+      ARG(TOP(0)) = mkStringC(res);+      FREE(res);+      FREE(msg);+      goto err;                 /* XXX not right message if the error is caught */+      }+    case T_ERROR:+      if (doing_rnf) RET;+    err:+      if (cur_handler) {+        /* Pass the string to the handler */+        CHKARG1;+        cur_handler->hdl_exn = x;+        longjmp(cur_handler->hdl_buf, 1);+      } else {+        /* No handler, so just die. */+        CHKARGEV1(msg = evalstring(x, 0));+#if WANT_STDIO+        ERR1("mhs: %s\n", msg);+        EXIT(1);+#else  /* WANT_STDIO */+        ERR1("error: %s", msg);+#endif  /* WANT_STDIO */+      }+    case T_SEQ:  CHECK(2); evali(ARG(TOP(0))); POP(2); n = TOP(-1); y = ARG(n); GOIND(y); /* seq x y = eval(x); y */++    case T_EQUAL:+      CHECK(2); r = compare(TOP(1)); POP(2); n = TOP(-1); GOIND(r==0 ? combTrue : combFalse);+    case T_COMPARE:+      CHECK(2); r = compare(TOP(1)); POP(2); n = TOP(-1); GOIND(r < 0 ? combLT : r > 0 ? combGT : combEQ);++    case T_RNF:+      if (doing_rnf) RET;+      CHECK(2);+      xi = evalint(ARG(TOP(0)));+      rnf(xi, ARG(TOP(1))); POP(2); n = TOP(-1); GOIND(combUnit);++    case T_IO_PERFORMIO:+      CHECK(1);+      if (doing_rnf) RET;+      execio(&ARG(TOP(0)));       /* run IO action */+      x = ARG(TOP(0));           /* should be RETURN e */+      if (GETTAG(x) != T_AP || GETTAG(FUN(x)) != T_IO_RETURN)+        ERR("PERFORMIO");+      POP(1);+      n = TOP(-1);+      GOIND(ARG(x));++    case T_IO_CCBIND:           /* We should never have to reduce this */+    case T_IO_BIND:+    case T_IO_THEN:+    case T_IO_RETURN:+    case T_IO_SERIALIZE:+    case T_IO_PRINT:+    case T_IO_DESERIALIZE:+    case T_IO_GETARGS:+    case T_IO_GETTIMEMILLI:+    case T_IO_CCALL:+    case T_IO_CATCH:+    case T_NEWCASTRINGLEN:+    case T_PEEKCASTRING:+    case T_PEEKCASTRINGLEN:+    case T_ARR_ALLOC:+    case T_ARR_SIZE:+    case T_ARR_READ:+    case T_ARR_WRITE:+      RET;++    case T_DYNSYM:+      /* A dynamic FFI lookup */+      CHECK(1);+      msg = evalstring(ARG(TOP(0)), 0);+      GCCHECK(1);+      x = ffiNode(msg);+      FREE(msg);+      POP(1);+      n = TOP(-1);+      GOIND(x);++#if WANT_TICK+    case T_TICK:+      xi = GETVALUE(n);+      CHKARG1;+      dotick(xi);+      GOIND(x);+#endif++    default:+      ERR1("eval tag %d", GETTAG(n));+    }+  }+ ret:+  if (stack_ptr != stk) {+    // In this case, n was an AP that got pushed and potentially+    // updated.+    stack_ptr = stk;+    n = TOP(-1);+  }+  return n;+}++/* This is the interpreter for the IO monad operations.+ * + * Assuming every graph rewrite is atomic we want the graph+ * to always represent the rest of the program to run.+ * To this end, we need to mutate the graph every time+ * an IO operation has been performed to make sure we don't+ * execute it again.+ * To have a cell that is safe to mutate, we allocate a new+ * application on entry to execio().+ * Given the call execio(np) we allocate this graph, top,:+ *   BIND (*np) RETURN+ * and make np point to it.+ * This graph will be updated continuously as we execite IO action.+ * Invariant: the second argument to this BIND is always either RETURN+ * or a C'BIND.  The second argument to C'BIND has the same invariant.+ * This is the cycle:+ *   given top = BIND n q+ *   eval(n)+ *   case n+ *     BIND r s:  rewrite to top := BIND r (C'BIND s q)  -- (r >>= s) >>= q  -->  r >>= (\ x -> s x >>= q)+ *     THEN r s:  ... K s ...+ *     otherwise: res = execute n+ *       case q+ *         RETURN:     rewrite to  top := RETURN res;  return to caller+ *         C'BIND r s: rewrite to  top := BIND (r res) s; goto top+ */+void+execio(NODEPTR *np)+{+  stackptr_t stk = stack_ptr;+  NODEPTR f, x, n, q, r, s, res, top1;+  char *name;+  value_t len;+  struct handler *h;+#if WANT_STDIO+  void *ptr;+  int hdr;+#endif  /* WANT_STDIO */+  NODEPTR top;++/* IO operations need all arguments, anything else should not happen. */+#define CHECKIO(n) do { if (stack_ptr - stk != (n+1)) {ERR("CHECKIO");}; } while(0)+  /* #define RETIO(p) do { stack_ptr = stk; return (p); } while(0)*/+#define GCCHECKSAVE(p, n) do { PUSH(p); GCCHECK(n); (p) = TOP(0); POP(1); } while(0)+#define RETIO(p) do { stack_ptr = stk; res = p; goto rest; } while(0)+#define IOASSERT(p,s) do { if (!(p)) ERR("IOASSERT " s); } while(0)++  GCCHECK(2);+  top = new_ap(new_ap(combIOBIND, *np), combIORETURN);+  *np = top;++ start:+  //dump("start", top);+  IOASSERT(stack_ptr == stk, "start");+  //ppmsg("n before = ", ARG(FUN(top)));+  n = evali(ARG(FUN(top)));     /* eval(n) */+  //ppmsg("n after  = ", n);+  if (GETTAG(n) == T_AP && GETTAG(top1 = indir(&FUN(n))) == T_AP) {+    switch (GETTAG(indir(&FUN(top1)))) {+    case T_IO_BIND:+      GCCHECKSAVE(n, 2);+      s = ARG(n);+    bind:+      q = ARG(top);+      r = ARG(top1);+      ARG(FUN(top)) = r;+      ARG(top) = x = new_ap(new_ap(combIOCCBIND, s), q);+      goto start;+    case T_IO_THEN:+      GCCHECKSAVE(n, 3);+      s = new_ap(combFalse, ARG(n));+      goto bind;+    default:+      break;+    }+  }+  goto execute;++ rest:                          /* result is in res */+  //ppmsg("res=", res);+  q = ARG(top);+  //ppmsg("q=", q);+  if (GETTAG(q) == T_IO_RETURN) {+    /* execio is done */+    FUN(top) = combIORETURN;+    ARG(top) = res;+    IOASSERT(stack_ptr == stk, "stk");+    return;+  }+  /* not done, it must be a C'BIND */+  GCCHECK(1);+  IOASSERT(GETTAG(q) == T_AP && GETTAG(FUN(q)) == T_AP && GETTAG(FUN(FUN(q))) == T_IO_CCBIND, "rest-AP");+  r = ARG(FUN(q));+  s = ARG(q);+  ARG(FUN(top)) = new_ap(r, res);+  ARG(top) = s;+  goto start;++ execute:+  PUSH(n);+  for(;;) {+    COUNT(num_reductions);+    //printf("execute switch %s\n", tag_names[GETTAG(n)]);+    switch (GETTAG(n)) {+    case T_IND:+      n = INDIR(n);+      TOP(0) = n;+      break;+    case T_AP:+      n = FUN(n);+      PUSH(n);+      break;+    case T_IO_BIND:+      ERR("T_IO_BIND");+    case T_IO_THEN:+      ERR("T_IO_THEN");+    case T_IO_CCBIND:+      ERR("T_IO_CCBIND");+    case T_IO_RETURN:+      CHECKIO(1);+      n = ARG(TOP(1));+      RETIO(n);+#if WANT_STDIO+    case T_IO_PRINT:+      hdr = 0;+      goto ser;+    case T_IO_SERIALIZE:+      hdr = 1;+    ser:+      CHECKIO(2);+      gc();                     /* DUBIOUS: do a GC to get possible GC reductions */+      ptr = (struct BFILE*)evalptr(ARG(TOP(1)));+      x = evali(ARG(TOP(2)));+      //x = ARG(TOP(1));+      printb(ptr, x, hdr);+      putb('\n', ptr);+      RETIO(combUnit);+    case T_IO_DESERIALIZE:+      CHECKIO(1);+      ptr = (struct BFILE*)evalptr(ARG(TOP(1)));+      n = parse_top(ptr);+      RETIO(n);+#endif+#if WANT_ARGS+    case T_IO_GETARGS:+      CHECKIO(0);+      {+      /* compute total number of characters */+        size_t size = 0;+        for(int i = 0; i < glob_argc; i++) {+          size += strNodes(strlen(glob_argv[i]));+        }+        /* The returned list will need a CONS for each string, and a NIL */+        size += glob_argc * 2 + 1;+        GCCHECK(size);+        /*+        PRINT("total size %d:", size);+        for(int i = 0; i < glob_argc; i++)+          PRINT(" %s", glob_argv[i]);+        PRINT("\n");+        */+        n = mkNil();+        for(int i = glob_argc-1; i >= 0; i--) {+          n = mkCons(mkString(glob_argv[i], strlen(glob_argv[i])), n);+        }+      }+      RETIO(n);+#endif++    case T_IO_CCALL:+      {+        int a = (int)GETVALUE(n);+        funptr_t f = ffi_table[a].ffi_fun;+        value_t ri, xi, yi, zi;+#if WANT_FLOAT+        flt_t rd, xd, yd;+#endif  /* WANT_FLOAT */+        void *xp, *yp, *wp, *rp;+#define INTARG(n) evalint(ARG(TOP(n)))+#define PTRARG(n) evalptr(ARG(TOP(n)))+#define DBLARG(n) evaldbl(ARG(TOP(n)))+#define FFIV(n) CHECKIO(n)+#define FFI(n)  CHECKIO(n); GCCHECK(1)+        /* This isn't great, but this is MicroHs, so it's good enough. */+        switch (ffi_table[a].ffi_how) {+        case FFI_V:   FFIV(0);                                      (*                               f)();                     RETIO(combUnit);+        case FFI_I:   FFI (0);                                 ri = (*(value_t (*)(void            ))f)();      n = mkInt(ri); RETIO(n);+        case FFI_i:   FFI (0);                                 ri = (*(int     (*)(void            ))f)();      n = mkInt(ri); RETIO(n);+        case FFI_IV:  FFIV(1); xi = INTARG(1);                      (*(void    (*)(value_t         ))f)(xi);                   RETIO(combUnit);+        case FFI_II:  FFI (1); xi = INTARG(1);                 ri = (*(value_t (*)(value_t         ))f)(xi);    n = mkInt(ri); RETIO(n);+        case FFI_IIV: FFIV(2); xi = INTARG(1); yi = INTARG(2);      (*(void    (*)(value_t, value_t))f)(xi,yi);                RETIO(combUnit);+        case FFI_III: FFI (2); xi = INTARG(1); yi = INTARG(2); ri = (*(value_t (*)(value_t, value_t))f)(xi,yi); n = mkInt(ri); RETIO(n);+#if WANT_FLOAT+        case FFI_DD:  FFI (1); xd = DBLARG(1);                 rd = (*(flt_t   (*)(flt_t           ))f)(xd);    n = mkFlt(rd); RETIO(n);+        case FFI_DDD: FFI (2); xd = DBLARG(1); yd = DBLARG(2); rd = (*(flt_t   (*)(flt_t,   flt_t  ))f)(xd,yd); n = mkFlt(rd); RETIO(n);+#endif  /* WANT_FLOAT */+        case FFI_PI:  FFI (1); xp = PTRARG(1);                 ri = (*(value_t (*)(void*           ))f)(xp);    n = mkInt(ri); RETIO(n);+        case FFI_Pi:  FFI (1); xp = PTRARG(1);                 ri = (*(int     (*)(void*           ))f)(xp);    n = mkInt(ri); RETIO(n);+        case FFI_IP:  FFI (1); xi = INTARG(1);                 rp = (*(void*   (*)(value_t         ))f)(xi);    n = mkPtr(rp); RETIO(n);+        case FFI_PP:  FFI (1); xp = PTRARG(1);                 rp = (*(void*   (*)(void*           ))f)(xp);    n = mkPtr(rp); RETIO(n);+        case FFI_PV:  FFI (1); xp = PTRARG(1);                      (*(void    (*)(void*           ))f)(xp);                   RETIO(combUnit);+        case FFI_PPI: FFI (2); xp = PTRARG(1);yp = PTRARG(2);  ri = (*(value_t (*)(void*, void*    ))f)(xp,yp); n = mkInt(ri); RETIO(n);+        case FFI_PIV: FFI (2); xp = PTRARG(1);yi = INTARG(2);       (*(void    (*)(void*, value_t  ))f)(xp,yi);                RETIO(combUnit);+        case FFI_PPV: FFI (2); xp = PTRARG(1);yp = PTRARG(2);       (*(void    (*)(void*, void*    ))f)(xp,yp);                RETIO(combUnit);+        case FFI_IIP: FFI (2); xi = INTARG(1);yi = INTARG(2);  rp = (*(void*   (*)(value_t,value_t ))f)(xi,yi); n = mkPtr(rp); RETIO(n);+        case FFI_PPP: FFI (2); xp = PTRARG(1);yp = PTRARG(2);  rp = (*(void*   (*)(void*, void*    ))f)(xp,yp); n = mkPtr(rp); RETIO(n);+        case FFI_IPI: FFI (2); xi = INTARG(1);yp = PTRARG(2);  ri = (*(value_t (*)(value_t, void*  ))f)(xi,yp); n = mkInt(ri); RETIO(n);+        case FFI_iPi: FFI (2); xi = INTARG(1);yp = PTRARG(2);  ri = (*(int     (*)(int,   void*    ))f)(xi,yp); n = mkInt(ri); RETIO(n);+        case FFI_iPV: FFI (2); xi = INTARG(1);yp = PTRARG(2);       (*(void    (*)(int,   void*    ))f)(xi,yp);                RETIO(combUnit);+        case FFI_PPzV:FFI (3); xp = PTRARG(1);yp = PTRARG(2); zi = INTARG(3); (*(void    (*)(void*, void*, size_t))f)(xp,yp,zi); RETIO(combUnit);+        case FFI_PIIPI:FFI (4);xp = PTRARG(1);yi = INTARG(2); zi = INTARG(3); wp = PTRARG(4);+          ri = (*(int     (*)(void*, int, int, void*    ))f)(xp,yi,zi,wp); n = mkInt(ri); RETIO(n);+        default: ERR("T_IO_CCALL");+        }+      }++    case T_IO_CATCH:+      {+        h = MALLOC(sizeof *h);+        if (!h)+          memerr();+        CHECKIO(2);+        h->hdl_old = cur_handler;+        h->hdl_stack = stack_ptr;+        cur_handler = h;+        if (setjmp(h->hdl_buf)) {+          /* An exception occurred: */+          stack_ptr = h->hdl_stack;+          x = h->hdl_exn;       /* exception value */+          GCCHECKSAVE(x, 1);+          f = ARG(TOP(2));      /* second argument, handler */+          n = new_ap(f, x);+          cur_handler = h->hdl_old;+          FREE(h);+          POP(3);+          ARG(FUN(top)) = n;+          goto start;+        } else {+          /* Normal execution: */+          execio(&ARG(TOP(1))); /* execute first argument */+          cur_handler = h->hdl_old; /* restore old handler */+          FREE(h);+          n = ARG(TOP(1));+          IOASSERT(GETTAG(n) == T_AP && GETTAG(FUN(n)) == T_IO_RETURN, "CATCH");+          RETIO(ARG(n));             /* return result */+        }+      }++    case T_NEWCASTRINGLEN:+      CHECKIO(1);+      name = evalstring(ARG(TOP(1)), &len);+      GCCHECK(4);+      n = new_ap(new_ap(combPair, x = alloc_node(T_PTR)), mkInt(len));+      PTR(x) = name;+      RETIO(n);++    case T_PEEKCASTRING:+      {+      size_t size;+      CHECKIO(1);+      name = evalptr(ARG(TOP(1)));+      size = strlen(name);+      GCCHECK(strNodes(size));+      RETIO(mkString(name, size));+      }++    case T_PEEKCASTRINGLEN:+      {+      size_t size;+      CHECKIO(2);+      size = evalint(ARG(TOP(2)));+      name = evalptr(ARG(TOP(1)));+      GCCHECK(strNodes(size));+      RETIO(mkString(name, size));+      }++    case T_ARR_ALLOC:+      {+      size_t size;+      NODEPTR elem;+      struct ioarray *arr;+      CHECKIO(2);+      size = evalint(ARG(TOP(1)));+      elem = ARG(TOP(2));+      arr = arr_alloc(size, elem);+      n = alloc_node(T_ARR);+      ARR(n) = arr;+      RETIO(n);+      }+    case T_ARR_SIZE:+      CHECKIO(1);+      n = evali(ARG(TOP(1)));+      if (GETTAG(n) != T_ARR)+        ERR("bad ARR tag");+      RETIO(mkInt(ARR(n)->size));+    case T_ARR_READ:+      {+      size_t i;+      CHECKIO(2);+      i = evalint(ARG(TOP(2)));+      n = evali(ARG(TOP(1)));+      if (GETTAG(n) != T_ARR)+        ERR("bad ARR tag");+      if (i >= ARR(n)->size)+        ERR("ARR_READ");+      RETIO(ARR(n)->array[i]);+      }+    case T_ARR_WRITE:+      {+      size_t i;+      CHECKIO(3);+      i = evalint(ARG(TOP(2)));+      n = evali(ARG(TOP(1)));+      if (GETTAG(n) != T_ARR)+        ERR("bad ARR tag");+      if (i >= ARR(n)->size) {+        //PRINT("%d %p %d\n", (int)i, ARR(n), (int)ARR(n)->size);+        ERR("ARR_WRITE");+      }+      ARR(n)->array[i] = ARG(TOP(3));+      RETIO(combUnit);+      }++    default:+      //printf("bad tag %s\n", tag_names[GETTAG(n)]);+      ERR1("execio tag %d", GETTAG(n));+    }+  }+}++#if WANT_ARGS+heapoffs_t+memsize(const char *p)+{+  heapoffs_t n = atoi(p);+  while (isdigit(*p))+    p++;+  switch (*p) {+  case 'k': case 'K': n *= 1000; break;+  case 'm': case 'M': n *= 1000000; break;+  case 'g': case 'G': n *= 1000000000; break;+  default: break;+  }+  return n;+}+#endif++extern uint8_t *combexpr;+extern int combexprlen;++MAIN+{+  NODEPTR prog;+#if WANT_ARGS+  char *inname = 0;+  char **av;+  int inrts;+#if WANT_TICK+  int dump_ticks = 0;+#endif+#endif+#if WANT_STDIO+  char *outname = 0;+  size_t file_size = 0;+#endif+  +#if 0+  /* MINGW doesn't do buffering right */+  setvbuf(stdout, NULL, _IOLBF, BUFSIZ);+  setvbuf(stderr, NULL, _IONBF, BUFSIZ);+#endif++#ifdef INITIALIZATION+  main_setup(); /* Do platform specific start-up. */+#endif++#if WANT_ARGS+  argc--, argv++;+  glob_argv = argv;+  for (av = argv, inrts = 0; argc--; argv++) {+    char *p = *argv;+    if (inrts) {+      if (strcmp(p, "-RTS") == 0) {+        inrts = 0;+      } else {+        if (strcmp(p, "-v") == 0)+          verbose++;+#if WANT_TICKS+        else if (strcmp(p, "-T") == 0)+          dump_ticks = 1;+#endif+        else if (strncmp(p, "-H", 2) == 0)+          heap_size = memsize(&p[2]);+        else if (strncmp(p, "-K", 2) == 0)+          stack_size = memsize(&p[2]);+        else if (strncmp(p, "-r", 2) == 0)+          inname = &p[2];+#if WANT_STDIO+        else if (strncmp(p, "-o", 2) == 0)+          outname = &p[2];+#endif  /* WANT_STDIO */+        else+          ERR("Usage: eval [+RTS [-v] [-Hheap-size] [-Kstack-size] [-rFILE] [-oFILE] -RTS] arg ...");+      }+    } else {+      if (strcmp(p, "+RTS") == 0) {+        inrts = 1;+      } else {+        *av++ = p;+      }+    }+  }+  glob_argc = av - glob_argv;++  if (inname == 0)+    inname = "out.comb";+#endif++  init_nodes();+  stack = MALLOC(sizeof(NODEPTR) * stack_size);+  if (!stack)+    memerr();++  if (combexpr) {+    int c;+    BFILE *bf = openb_buf(combexpr, combexprlen);+    c = getb(bf);+    /* Compressed combinators start with a 'Z', otherwise 'v' (for version) */+    if (c == 'Z') {+      /* add compressor transducer */+      bf = add_lzw_decompressor(bf);+    } else {+      /* put it back, we need it */+      ungetb(c, bf);+    }+    prog = parse_top(bf);+    closeb(bf);+  } else {+#if WANT_STDIO+    prog = parse_file(inname, &file_size);+#else+    ERR("no stdio");+#endif+  }++  /* GC unused stuff, nice for -o */+  PUSH(prog);+  want_gc_red = 1;+  gc();+  want_gc_red = 0;+  prog = POPTOP();++#if WANT_STDIO+  heapoffs_t start_size = num_marked;+  if (outname) {+    /* Save GCed file (smaller), and exit. */+    FILE *out = fopen(outname, "w");+    if (!out)+      ERR1("cannot open output file %s", outname);+    struct BFILE *bf = add_FILE(out);+    printb(bf, prog, 1);+    closeb(bf);+    EXIT(0);+  }+  if (verbose > 2) {+    pp(stdout, prog);+  }+#endif+  run_time -= GETTIMEMILLI();+  PUSH(prog);+  topnode = &TOP(0);+  execio(&TOP(0));+  prog = TOP(0);+  POP(1);+#if SANITY+  if (GETTAG(prog) != T_AP || GETTAG(FUN(prog)) != T_IO_RETURN)+    ERR("main execio");+#endif+#if WANT_STDIO+  NODEPTR res = evali(ARG(prog));+#else+  (void)evali(ARG(prog));+#endif+  run_time += GETTIMEMILLI();+#if WANT_STDIO+  if (verbose) {+    if (verbose > 1) {+      PRINT("\nmain returns ");+      pp(stdout, res);+      PRINT("node size=%"PRIheap", heap size bytes=%"PRIheap"\n", (heapoffs_t)NODE_SIZE, heap_size * NODE_SIZE);+    }+    setlocale(LC_NUMERIC, "");  /* Make %' work on platforms that support it */+    PRINT("%"PCOMMA"15"PRIheap" combinator file size\n", (heapoffs_t)file_size);+    PRINT("%"PCOMMA"15"PRIheap" cells at start\n", start_size);+    PRINT("%"PCOMMA"15"PRIheap" cells heap size (%"PCOMMA""PRIheap" bytes)\n", heap_size, heap_size * NODE_SIZE);+    PRINT("%"PCOMMA"15"PRIcounter" cells allocated (%"PCOMMA".1f Mbyte/s)\n", num_alloc, num_alloc * NODE_SIZE / ((double)run_time / 1000) / 1000000);+    PRINT("%"PCOMMA"15"PRIcounter" GCs\n", num_gc);+    PRINT("%"PCOMMA"15"PRIcounter" max cells used\n", max_num_marked);+    PRINT("%"PCOMMA"15"PRIcounter" reductions (%"PCOMMA".1f Mred/s)\n", num_reductions, num_reductions / ((double)run_time / 1000) / 1000000);+    PRINT("%"PCOMMA"15"PRIcounter" array alloc\n", num_arr_alloc);+    PRINT("%"PCOMMA"15"PRIcounter" array free\n", num_arr_free);+    // PRINT("%"PCOMMA"15"PRIcounter" max mark depth\n", max_mark_depth);+    PRINT("%15.2fs total expired time\n", (double)run_time / 1000);+    PRINT("%15.2fs total gc time\n", (double)gc_mark_time / 1000);+#if GCRED+    PRINT(" GC reductions A=%d, K=%d, I=%d, int=%d flip=%d\n", red_a, red_k, red_i, red_int, red_flip);+#endif+  }+#endif  /* WANT_STDIO */++#if WANT_TICK+  if (dump_ticks) {+    dump_tick_table(stdout);+  }+#endif++#ifdef TEARDOWN+  main_teardown(); /* do some platform specific teardown */ #endif   EXIT(0); }
src/runtime/md5.c view
@@ -231,15 +231,20 @@     memcpy(result, ctx.digest, 16); } -void md5File(FILE *file, uint8_t *result){-    char *input_buffer = malloc(1024);+#define MD5BUFSIZE 1024+void+md5BFILE(BFILE *file, uint8_t *result){+    uint8_t *input_buffer = malloc(MD5BUFSIZE);     size_t input_size = 0;      MD5Context ctx;     md5Init(&ctx); -    while((input_size = fread(input_buffer, 1, 1024, file)) > 0){-        md5Update(&ctx, (uint8_t *)input_buffer, input_size);+    if (!input_buffer)+      memerr();++    while((input_size = readb(input_buffer, MD5BUFSIZE, file)) > 0){+        md5Update(&ctx, input_buffer, input_size);     }      md5Finalize(&ctx);
src/runtime/md5.h view
@@ -1,5 +1,6 @@ /* Code from https://github.com/Zunawe/md5-c */ +struct BFILE; void md5String(char *input, uint8_t *result); void md5Array(uint8_t *input, uint8_t *result, size_t inputlen);-void md5File(FILE *file, uint8_t *result);+void md5BFILE(struct BFILE *file, uint8_t *result);
+ tests/BindPat.hs view
@@ -0,0 +1,12 @@+module BindPat(main) where+import Prelude++foo :: [Int] -> [Int]+foo xs = do+  1 <- xs+  pure 2++main :: IO ()+main = do+  print $ foo [1,1]+  print $ foo [2]
+ tests/BindPat.ref view
@@ -0,0 +1,2 @@+[2,2]+[]
+ tests/Bug1.hs view
@@ -0,0 +1,19 @@+module Bug1(main) where+import Prelude++main :: Int+main = 0++class C (t :: Type -> Type) where+  el :: forall a . Eq a => a -> t a -> Bool++el_dflt :: forall (t::Type -> Type) . (C t) => (forall a . (Eq a) => a -> t a -> Bool)+el_dflt  = undefined++instance C []++--instance C [] where+--  el = elem++--instance C [] where+--  el = el_dflt
+ tests/ExistsBug.hs view
@@ -0,0 +1,18 @@+module Exists(main) where+import Prelude++data E = forall a . Show a => C a++es :: [E]+es = [C True, C 'a']++instance Show E where+  show (C a) = show a++xx :: Int+xx =+  let f (C a) = a+  in  length $ map f [C 'a', C True]++main :: IO ()+main = print es
tests/FArith.hs view
@@ -1,7 +1,8 @@ module FArith(module FArith) where- import Prelude-import Text.String++readDouble :: String -> Double+readDouble = read  list1 :: [Double] list1 = [-100.343241, -53.3248973, 0.0, 1.0, 1.23453523, 3243534.34534, 999.999]
tests/Foreign.hs view
@@ -1,11 +1,11 @@ module Foreign(main) where import Prelude -foreign import ccall "llabs" abs :: Int -> IO Int+foreign import ccall "llabs" iabs :: Int -> IO Int  main :: IO () main = do-  x1 <- abs (3 - 8)+  x1 <- iabs (3 - 8)   putStrLn $ show x1-  x2 <- abs (10 - 8)+  x2 <- iabs (10 - 8)   putStrLn $ show x2
tests/FunDep.hs view
@@ -1,5 +1,6 @@ module FunDep(main) where import Prelude+import Data.Char  class C a b | a -> b where   f :: a -> b
tests/IOArray.hs view
@@ -2,6 +2,7 @@ import Prelude import Data.IOArray import Data.IORef+import System.IO  main :: IO () main = do
+ tests/Interactive.hs view
@@ -0,0 +1,7 @@+module Interactive(module Interactive) where+import Prelude+import System.IO.PrintOrRun+default (Integer, Double)++_it :: IO ()+_it = printOrRun (1+2)
+ tests/Kind.hs view
@@ -0,0 +1,6 @@+module Kind(main) where++data TypeRep k (a::k) = T++class C k (a :: k) where+  typeRep :: TypeRep k a
+ tests/ListCompr.hs view
@@ -0,0 +1,16 @@+module ListCompr(main) where+import Prelude+default (Int)++main :: IO ()+main = do+  print [ x | x <- [1..3] ]+  print [ x | x <- [1..3], odd x ]+  print [ x+1 | x <- [1..3] ]+  print [ (x,y) | x <- [1..3], y <- [1,2] ]+  print [ (x,y) | x <- [1..3], y <- [1..x] ]+  print $ [ x | x <- [1..3] ] ++ [ x | x <- [1..4] ]+  print [ [ x + y | y <- [1,2] ] | x <- [1..3] ]+  print [ x+1 | x <- [ a+b | a <- [1,10,100], b <- [2,3] ], even x ]+  let lst = [((==5), "5"), (const True, "def")]+  print [ s | (p, s) <- lst, p 5 ]
+ tests/ListCompr.ref view
@@ -0,0 +1,9 @@+[1,2,3]+[1,3]+[2,3,4]+[(1,1),(1,2),(2,1),(2,2),(3,1),(3,2)]+[(1,1),(2,1),(2,2),(3,1),(3,2),(3,3)]+[1,2,3,1,2,3,4]+[[2,3],[3,4],[4,5]]+[5,13,103]+["5","def"]
tests/Makefile view
@@ -3,7 +3,7 @@ EVAL=../bin/mhseval +RTS -H1M -RTS .PHONY: test nfib clean errtest alltest cache info -alltest:	info test errtest+alltest:	info test errtest interactivetest  cache: 	rm -f .mhscache@@ -56,9 +56,17 @@ 	$(TMHS) PolyKind   && $(EVAL) > PolyKind.out   && diff PolyKind.ref PolyKind.out 	$(TMHS) Record     && $(EVAL) > Record.out     && diff Record.ref Record.out 	$(TMHS) Deriving   && $(EVAL) > Deriving.out   && diff Deriving.ref Deriving.out+	$(TMHS) Unicode    && $(EVAL) > Unicode.out    && diff Unicode.ref Unicode.out+	$(TMHS) BindPat    && $(EVAL) > BindPat.out    && diff BindPat.ref BindPat.out+	$(TMHS) Read       && $(EVAL) > Read.out       && diff Read.ref Read.out+	$(TMHS) ListCompr  && $(EVAL) > ListCompr.out  && diff ListCompr.ref ListCompr.out+	$(TMHS) ParseInd   && $(EVAL) > ParseInd.out   && diff ParseInd.ref ParseInd.out  errtest: 	sh errtester.sh < errmsg.test++interactivetest:+	$(TMHS) < itest.in | sed -e '1,/^>/d' > itest.out && diff itest.ref itest.out  nfib: 	$(TMHS) Nfib && $(EVAL)
tests/Multi.hs view
@@ -1,5 +1,6 @@ module Multi(main) where import Prelude+import Data.Char  class C a b where   conv :: a -> b
tests/Nfib.hs view
@@ -1,5 +1,6 @@ module Nfib(main, nfib) where import Prelude+import System.IO(getTimeMilli)  nfib :: Int -> Int nfib n =
+ tests/ParseInd.hs view
@@ -0,0 +1,19 @@+module ParseInd(main) where+import Prelude++-- The parse error generateing a '}'++main :: IO ()+main = do+  print (foo 1)+  print (bar True)+  baz 1++foo :: Int -> Int+foo a = let x = a+1 in x++bar :: Bool -> Bool+bar x = not (case x of True -> False; False -> True)++baz :: Int -> IO ()+baz i = (do print i) >> (do print (i+1))
+ tests/ParseInd.ref view
@@ -0,0 +1,4 @@+2+True+1+2
tests/PolyKind.hs view
@@ -1,8 +1,8 @@ module PolyKind(main) where import Prelude -type Proxy :: forall (k::Kind) . k -> Type-data Proxy a = Proxy+type XProxy :: forall (k::Kind) . k -> Type+data XProxy a = XProxy  data TypeRep = TypeRep String [TypeRep] @@ -18,7 +18,7 @@   typeRep :: forall proxy . proxy a -> TypeRep  typeOf :: forall a . Typeable a => a -> TypeRep-typeOf _ = typeRep (Proxy :: Proxy a)+typeOf _ = typeRep (XProxy :: XProxy a)  instance Typeable Int where   typeRep _ = TypeRep "Int" []@@ -27,10 +27,10 @@   typeRep _ = TypeRep "IO" []  instance forall f a . (Typeable f, Typeable a) => Typeable (f a) where-  typeRep _ = mkAppTy (typeRep (Proxy :: Proxy f)) (typeRep (Proxy :: Proxy a))+  typeRep _ = mkAppTy (typeRep (XProxy :: XProxy f)) (typeRep (XProxy :: XProxy a))  main :: IO () main = do-  print $ typeRep (Proxy :: Proxy Int)-  print $ typeRep (Proxy :: Proxy IO)-  print $ typeRep (Proxy :: Proxy (IO Int))+  print $ typeRep (XProxy :: XProxy Int)+  print $ typeRep (XProxy :: XProxy IO)+  print $ typeRep (XProxy :: XProxy (IO Int))
+ tests/Quant.hs view
@@ -0,0 +1,23 @@+module Quant(main) where+import Prelude++{-+data Rose (f :: Type -> Type) a = Branch a (f (Rose f a))++instance forall a (f :: Type -> Type) .+         (Eq a, forall b. (Eq b) => Eq (f b)) => Eq (Rose f a) where+    (Branch x1 c1) == (Branch x2 c2)  =  x1==x2 && c1==c2++t1 :: Rose [] Int+t1 = Branch 1 [Branch 2 [], Branch 3 []]++main :: IO ()+main = do+  print $ t1 == t1+-}++data T (f :: Type -> Type) a = C (f a)++eq :: forall a (f :: Type -> Type) .+      (Eq a, forall b. (Eq b) => Eq (f b)) => T f a -> T f a -> Bool+eq (C xxx) (C yyy) = xxx == yyy
+ tests/Read.hs view
@@ -0,0 +1,61 @@+module Read(main) where+import Prelude+import Text.Read++main :: IO ()+main = do+  print (read "123"   :: Int)+  print (read " 123"  :: Int)+  print (read "123 "  :: Int)+  print (read "-123"  :: Int)+  print (read "(123)" :: Int)+  print (read "0x7b"  :: Int)+  print (read "0o173" :: Int)+  print (read "0b01111011" :: Int)+  print (read "2147483647" :: Int)+  print (read "-2147483648" :: Int)+  if _wordSize == 64 then do+    print (read "9223372036854775807" :: Int)+    print (read "-9223372036854775808" :: Int)+   else do+    putStrLn "9223372036854775807"+    putStrLn "-9223372036854775808"+  print (read "123"   :: Integer)+  print (read " 123"  :: Integer)+  print (read "123 "  :: Integer)+  print (read "-123"  :: Integer)+  print (read "(123)" :: Integer)+  print (read "1234567890123456789012345678901234567890" :: Integer)+  print (read "[1,2, 3]" :: [Int])+  print (read "False" :: Bool)+  print (read "True" :: Bool)+  print (reads "123 4" :: [(Int, String)])+  print (readMaybe "123" :: Maybe Int)+  print (readMaybe "apa" :: Maybe Int)+  print (read "1.25" :: Double)+  print (read "-1e5" :: Double)+  print (read "1.5e+5" :: Double)+  print (read "5e-1" :: Double)+  print (read "[EQ,GT,LT]" :: [Ordering])+  print (read "Nothing" :: Maybe Int)+  print (read "Just 123" :: Maybe Int)+  print (read "Just (Just 123)" :: Maybe (Maybe Int))+  print (read "Just Nothing" :: Maybe (Maybe Int))+  print (readMaybe "Just Just 123" :: Maybe (Maybe (Maybe Int)))+  print (read "Left True" :: Either Bool Int)+  print (read "Right 123" :: Either Bool Int)+  print (read "()" :: ())+  print (read "(True,123)" :: (Bool, Int))+  print (read "'a'" :: Char)+  print (read "'\n'" :: Char)+  print (read "'\^A'" :: Char)+  print (read "'\o2'" :: Char)+  print (read "'\3'" :: Char)+  print (read "'\x4'" :: Char)+  print (read "'\\\\'" :: Char)+  print (read "'\\''" :: Char)+  print (read "\"abc\"" :: String)+  print (read "\"a\nc\"" :: String)+  print (read "\"a\1\&1c\"" :: String)+  print (read "\"\\\"\"" :: String)+  print (read "\"\\\\\"" :: String)
+ tests/Read.ref view
@@ -0,0 +1,51 @@+123+123+123+-123+123+123+123+123+2147483647+-2147483648+9223372036854775807+-9223372036854775808+123+123+123+-123+123+1234567890123456789012345678901234567890+[1,2,3]+False+True+[(123," 4")]+Just 123+Nothing+1.25+-100000.0+150000.0+0.5+[EQ,GT,LT]+Nothing+Just 123+Just (Just 123)+Just Nothing+Nothing+Left True+Right 123+()+(True,123)+'a'+'\n'+'\1'+'\2'+'\3'+'\4'+'\\'+'\''+"abc"+"a\nc"+"a\1\&1c"+"\""+"\\"
tests/Record.hs view
@@ -105,3 +105,7 @@   print $ foow r2 --  print $ sel_ra r7   print r8+  print s1.x+  print s2.x+  print (x s1)+  print (x s2)
tests/Record.ref view
@@ -24,3 +24,7 @@ 777 2 CR{a=333,b=True}+10+20+10+20
− tests/Sign.hs 
@@ -1,11 +0,0 @@-module Sign(main) where-import Prelude--main :: IO ()-main = return ()--f :: Int -> Int-f x = x + head ([] :: [Int])--g :: forall a b . a -> [a]-g x = [] :: [a]
− tests/Syn.hs 
@@ -1,6 +0,0 @@-module Syn(main) where--type Id = forall a . a -> a--ide :: Id-ide x = x
+ tests/Unicode.hs view
@@ -0,0 +1,14 @@+module Unicode(main) where+import Prelude++main :: IO ()+main = do+  putStrLn "abc"+  putStrLn "\xe5\&bc"+  putStrLn "\x402\xa88"+  writeFile "unicode.tmp" "\xe5\&bc"+  ustr <- readFile "unicode.tmp"+  print $ ustr == "\xe5\&bc"++foo ∷ ∀ a . Eq a ⇒ a → a+foo x = if x == x then x else undefined
+ tests/Unicode.ref view
@@ -0,0 +1,4 @@+abc+åbc+Ђઈ+True
+ tests/itest.ref view
@@ -0,0 +1,2 @@+> 3+> Bye