diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,675 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + Copyright (C) + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,5 @@ +#!/usr/bin/env runhaskell + +import qualified Distribution.Simple + +main = Distribution.Simple.defaultMain diff --git a/changelog b/changelog new file mode 100644 --- /dev/null +++ b/changelog @@ -0,0 +1,26 @@ +2010-11-18 Dr. Alistair Ward + +0.9.0.0 + * First version of the package. +0.10.0.0 + * Created "src/ToolShed/" sub-directory & then modified module-names accordingly. + * Removed the module "Pair", and relocated its only function to the sole caller in the package "Bridge". + * Added a makefile. + * Qualified identifiers used in error-messages. +0.10.0.1 + * Tested with ghc-7.0.1, & conditionally replaced use of the package 'parallel' with 'deepseq', in the module "TimePure". +0.10.1.0 + * Added 'ToolShed.Arithmetic.nCr', "ToolShed.Options" and "ToolShed.Package". +0.10.2.0 + * Renamed package from 'ToolShed' to 'toolshed', for compatibility with Debian's ".deb"-format. +0.11.0.0 + * Added manually controlled "llvm" flag to "toolshed.cabal". + * Removed the module "ToolShed.Package", for which 'Distribution.Package.PackageIdentifier' is a suitable alternative. + * Added 'NOINLINE' pragma to each function in module "Unsafe". + * Relocated 'mean' and 'nCr' from "ToolShed.Arithmetic", to the package "factory". + * Added function 'ListPlus.groupComparing'. + * Changed identifier for type-parameters, to better reflect its role. + * Relocated the remaining rather pointless functions from the module "ToolShed.Arithmetic" and deleted it. + * Added module "ToolShed.Defaultable", and derived class 'ToolShed.Options.Options' from it. +0.11.1.0 + * Added functions 'merge' and 'mergeBy' to module "ToolShed.ListPlus" and exported a new type-synonym 'ToolShed.ListPlus.ChunkLength'. diff --git a/copyright b/copyright new file mode 100644 --- /dev/null +++ b/copyright @@ -0,0 +1,11 @@ +Author: + Dr. Alistair Ward . + +Copyright: + Copyright (C) 2010-2011 Dr. Alistair Ward. All Rights Reserved. + +Home-page: + http://functionalley.eu + +License: + GNU GENERAL PUBLIC LICENSE Version 3; see '/usr/share/common-licenses/GPL-3' or '/usr/share/doc/licenses/gpl-3.0.txt' where available, or the local packaged file 'LICENSE'. diff --git a/makefile b/makefile new file mode 100644 --- /dev/null +++ b/makefile @@ -0,0 +1,53 @@ +# Copyright (C) 2010 Dr. Alistair Ward +# +# This program is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . + +.PHONY: all build clean configure copy haddock help hlint install prof sdist + +all: install + +install: build haddock + @[ -z "$$CABAL_INSTALL_OPTIONS" ] || echo "INFO: CABAL_INSTALL_OPTIONS='$$CABAL_INSTALL_OPTIONS'" + runhaskell Setup.hs $@ $$CABAL_INSTALL_OPTIONS + +prof: + CABAL_CONFIGURE_OPTIONS="--enable-library-profiling $$CABAL_CONFIGURE_OPTIONS" make install + +copy: build + @[ -z "$$CABAL_COPY_OPTIONS" ] || echo "INFO: CABAL_COPY_OPTIONS='$$CABAL_COPY_OPTIONS'" + runhaskell Setup.hs $@ $$CABAL_COPY_OPTIONS + +build: configure + @[ -z "$$CABAL_BUILD_OPTIONS" ] || echo "INFO: CABAL_BUILD_OPTIONS='$$CABAL_BUILD_OPTIONS'" + runhaskell Setup.hs $@ $$CABAL_BUILD_OPTIONS + +configure: toolshed.cabal Setup.hs + @[ -z "$$CABAL_CONFIGURE_OPTIONS" ] || echo "INFO: CABAL_CONFIGURE_OPTIONS='$$CABAL_CONFIGURE_OPTIONS'" + runhaskell Setup.hs $@ $$CABAL_CONFIGURE_OPTIONS #--user + +haddock: configure + PATH=~/.cabal/bin:$$PATH runhaskell Setup.hs $@ --hyperlink-source #Amend path to find 'HsColour', as required for 'hyperlink-source'. + +hlint: + @$@ src/ + +sdist: configure + runhaskell Setup.hs $@ + +clean: + runhaskell Setup.hs $@ + +help: + @grep '^[a-zA-Z].*:' makefile | sed -e 's/:.*//' + diff --git a/src/ToolShed/Defaultable.hs b/src/ToolShed/Defaultable.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/Defaultable.hs @@ -0,0 +1,30 @@ +{- + Copyright (C) 2011 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] A simple interface which data-types with a default-value can implement. +-} + +module ToolShed.Defaultable( +-- * Type-classes + Defaultable(..) +) where + +class Defaultable a where + defaultValue :: a -- ^ The default value of the data-type. + diff --git a/src/ToolShed/ListPlus.hs b/src/ToolShed/ListPlus.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/ListPlus.hs @@ -0,0 +1,162 @@ +{- + Copyright (C) 2010 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] Miscellaneous polymorphic list-operations. +-} + +module ToolShed.ListPlus( +-- * Types +-- ** Type-synonyms + ChunkLength, +-- Split, +-- * Functions + chunk, + excise, + groupComparing, + merge, + mergeBy, +-- splitsFrom, + splitsLeftFrom, + splitsRightFrom, + takeUntil +) where + +import qualified Control.Arrow +import qualified Data.List + +-- | The length of the chunks into which a list is split. +type ChunkLength = Int + +{- | + * Splits a list into length-@size@ pieces, where @(size >= 0)@. + + * The last chunk will be shorter, if @n@ isn't an aliquot part of the input list-length. + + * If @(size == 0)@, the resulting list will be an infinite sequence of null lists. + + * CAVEAT: a similar function is available in the module /Data.List.Split/, though this one checks for @(size < 0)@. +-} +chunk :: + ChunkLength + -> [a] -- ^ The polymorphic input list to be chunked. + -> [[a]] +chunk size list + | size < 0 = error $ "ToolShed.ListPlus.chunk:\tnegative chunk-size=" ++ show size + | otherwise = chunk' list + where + chunk' :: [a] -> [[a]] + chunk' [] = [] + chunk' a = uncurry (:) . Control.Arrow.second chunk' $ splitAt size a + +-- | Remove the single indexed element from the list. +excise :: + Int -- ^ The index. + -> [a] -- ^ The polymorphic input list. + -> [a] -- ^ The same list, with the indexed element removed. +excise 0 = tail --Just for efficiency. +excise i = uncurry (++) . Control.Arrow.second tail . splitAt i + +{- | + * Much like 'Data.List.GroupBy', but where the normal binary predicate, + is composed from equality, after the same unary translation-function has been applied to both list-elements. + + * cf. 'GHC.Exts.groupWith', which uses the function parameter to both sort and group. +-} +groupComparing :: Eq b + => (a -> b) -- ^ Translates elements from the list, prior to testing the translated values for equality. + -> [a] -- ^ The polymorphic input list to group. + -> [[a]] -- ^ The same list split into chunks of the required length. +groupComparing f = Data.List.groupBy (\a b -> f a == f b) + +{- | + * Merge two sorted lists, to product a single sorted list. + + * The merge-process is /stable/, in that where items from each list are equal, they remain in the original order. +-} +merge :: Ord a => [a] -> [a] -> [a] +merge [] r = r +merge l [] = l +merge l@(x : xs) r@(y : ys) + | x > y = y : merge l ys + | otherwise = x : merge xs r + +{- | + * Merge two sorted lists, according to the specified order, to product a single sorted list. + + * The merge-process is /stable/, in that where items from each list are equal, they remain in the original order. +-} +mergeBy :: Ord a => (a -> a -> Ordering) -> [a] -> [a] -> [a] +mergeBy _ [] r = r +mergeBy _ l [] = l +mergeBy cmp l@(x : xs) r@(y : ys) + | x `cmp` y == GT = y : mergeBy cmp l ys + | otherwise = x : mergeBy cmp xs r + +-- | The polymorphic pair, resulting from splitting a list of arbitrary type. +type Split a = ([a] {-left list-}, [a] {-right list-}) + +-- | Use the specified transformation, to generate a list of 'Split's, from the initial one. +splitsFrom :: + (Split a -> Split a) -- ^ The function used to transform one /split/ into the next. + -> Int -- ^ Index. + -> [a] -- ^ The polymorphic input list from which the /splits/ are generated. + -> [Split a] -- ^ The list of all required splits of the single input list. +splitsFrom transformation i = iterate transformation . splitAt i + +{- | + * Create the set of all 'Split's, migrating left from the specified location. + + * CAVEAT: 'init' fails when 'fst' has been reduced to null. +-} +splitsLeftFrom :: + Int -- ^ Index. + -> [a] -- ^ The polymorphic input list from which the /splits/ are generated, as the index is stepped left + -> [Split a] -- ^ The list of all required splits of the single input list. +splitsLeftFrom start + | start < 0 = error $ "ToolShed.ListPlus.splitsLeftFrom:\tnegative starting-index; " ++ show start + | otherwise = splitsFrom (\(l, r) -> (init l, last l : r)) start + +{- | + * Create the set of all 'Split's, migrating right from the specified location. + + * CAVEAT: pattern-match against @ : @ fails, when 'snd' has been reduced to null. +-} +splitsRightFrom :: + Int -- ^ Index. + -> [a] -- ^ The polymorphic input list from which the /splits/ are generated, as the index is stepped right. + -> [Split a] -- ^ The list of all required splits of the single input list. +splitsRightFrom start + | start < 0 = error $ "ToolShed.ListPlus.splitsRightFrom:\tnegative starting-index; " ++ show start + | otherwise = splitsFrom (\(l, r : rs) -> (l ++ [r], rs)) start + +{- | + * Take until the specified predicate is satisfied; /including/ the item which satisfied it. + + * NB: @takeWhile (not . test)@ would return one fewer item. +-} +takeUntil :: + (a -> Bool) -- ^ Predicate, used to determine the last item taken. + -> [a] -- ^ The polymorphic input list. + -> [a] +takeUntil predicate = takeUntil' where + takeUntil' (x : xs) = x {-take regardless-} : if predicate x + then [] + else takeUntil' xs + takeUntil' _ = [] + diff --git a/src/ToolShed/Options.hs b/src/ToolShed/Options.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/Options.hs @@ -0,0 +1,32 @@ +{- + Copyright (C) 2011 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] Defines a standard interface to which various options-related data can conform. +-} + +module ToolShed.Options( +-- * Type-classes + Options(..) +) where + +import ToolShed.Defaultable as Defaultable + +-- | Similar to the class 'Text.Regex.Base.RegexLike.RegexOptions'. +class Defaultable a => Options a where + blankValue :: a -- ^ The /undefined/ state of the data-type, which may be literal, but could alternatively be a logical starting value. diff --git a/src/ToolShed/SelfValidate.hs b/src/ToolShed/SelfValidate.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/SelfValidate.hs @@ -0,0 +1,34 @@ +{- + Copyright (C) 2010 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] A class to define the simple interface, to which data which can self-validation, should conform. +-} + +module ToolShed.SelfValidate( +-- * Type-classes + SelfValidator(..) +) where + +-- | The interface to which data which can self-validate should conform. +class SelfValidator a where + isValid :: a -> Bool -- ^ The data which implements this interface should return 'True' if internally consistent. + +instance SelfValidator a => SelfValidator [a] where + isValid = all isValid --NB: a null list is presumed to be OK. + diff --git a/src/ToolShed/TimePure.hs b/src/ToolShed/TimePure.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/TimePure.hs @@ -0,0 +1,78 @@ +{-# LANGUAGE CPP #-} +{- + Copyright (C) 2010 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] Determines the CPU-time, required to evaluate the specified pure expression. + + [@CAVEAT@] + + The function used to force evaluation of the pure expression 'rnf', + & the type-class which the polymorphic data must implement 'NFData', + have been relocated from module "Control.Parallel.Strategies" to "Control.DeepSeq". +-} + +module ToolShed.TimePure ( +-- * Functions + getCPUSeconds, + printCPUSeconds +) where + +import qualified System.CPUTime +import qualified System.IO + +#ifdef HAVE_DEEPSEQ +import Control.DeepSeq(NFData, deepseq) +#else +import Control.Parallel(pseq) +import Control.Parallel.Strategies(NFData, rnf) +#endif + +{- | + * Time the specified pure expression. + + * CAVEAT: as a side-effect, the expression is /deep/ evaluated. +-} +getCPUSeconds :: NFData expression + => expression -- ^ Arbitrary polymorphic expression. + -> IO (Double, expression) -- ^ The original expression, tagged with the CPU-seconds taken. +getCPUSeconds expression = do + start <- System.CPUTime.getCPUTime + end <- +#ifdef HAVE_DEEPSEQ + expression `deepseq` +#else + rnf expression `pseq` +#endif + System.CPUTime.getCPUTime + + return {-to IO-monad-} (fromInteger (end - start) / 1e12 {-convert from pico-seconds-}, expression) + +{- | + * Print the time required by the specified pure expression. + + * CAVEAT: as a side-effect, the expression is /deep/ evaluated. +-} +printCPUSeconds :: NFData expression => expression -> IO expression +printCPUSeconds expression = do + (cpuSeconds, result) <- getCPUSeconds expression + + System.IO.hPutStrLn System.IO.stderr $ "CPU-seconds=" ++ show cpuSeconds + + return {-to IO-monad-} result + diff --git a/src/ToolShed/Unsafe.hs b/src/ToolShed/Unsafe.hs new file mode 100644 --- /dev/null +++ b/src/ToolShed/Unsafe.hs @@ -0,0 +1,56 @@ +{- + Copyright (C) 2010 Dr. Alistair Ward + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . +-} +{- | + [@AUTHOR@] Dr. Alistair Ward + + [@DESCRIPTION@] + + * Provides impure functions to print & return the specified value. + + * The pure interfaces permit calls from outside the /IO-monad/. + + [@TODO@] Review function-names. +-} + +module ToolShed.Unsafe( +-- * Functions + print', + printShow +) where + +import qualified System.IO +import qualified System.IO.Unsafe + +{-# NOINLINE print' #-} +-- | A transparent print-function, for use in debugging. +print' :: Show s + => s -- ^ Arbitrary polymorphic input-data. + -> s -- ^ Output (identical to input). +print' = System.IO.Unsafe.unsafePerformIO . f where + f :: Show s => s -> IO s + f x = System.IO.hPrint System.IO.stderr x >> return {-to IO-monad-} x + +{-# NOINLINE printShow #-} +-- | A transparent print-function, which prepends the specified label, for use in debugging. +printShow :: Show s + => String -- ^ The label to be printed before the value of the input data. + -> s -- ^ Arbitrary polymorphic input-data. + -> s -- ^ Output (identical to input). +printShow label = System.IO.Unsafe.unsafePerformIO . f label where + f :: Show s => String -> s -> IO s + f s x = System.IO.hPutStrLn System.IO.stderr (s ++ show x) >> return {-to IO-monad-} x + diff --git a/toolshed.cabal b/toolshed.cabal new file mode 100644 --- /dev/null +++ b/toolshed.cabal @@ -0,0 +1,51 @@ +--Package-properties +Name: toolshed +Version: 0.11.1.0 +Cabal-Version: >= 1.6 +Copyright: (C) 2010 Dr. Alistair Ward +License: GPL +License-file: LICENSE +Author: Dr. Alistair Ward +Stability: Stable interface. Ill-defined scope. +Synopsis: Utilities used by other packages. +Build-Type: Simple +Description: An ill-defined collection of simple unrelated utilities used by other packages from +Category: Utils +Tested-With: GHC == 6.10, GHC == 6.12, GHC == 7.0 +Homepage: http://functionalley.eu +Maintainer: toolshed functionalley eu +Bug-reports: toolshed functionalley eu +Extra-Source-Files: changelog, copyright, makefile + +flag haveDeepSeq + Description: Use the new module 'Control.DeepSeq', where available, rather than 'Control.Parallel.Strategies'. + Default: True + +flag llvm + Description: Whether the 'llvm' backend has been installed and is required for code-generation. + manual: True + default: False + +Library + hs-source-dirs: src + + Exposed-modules: + ToolShed.Defaultable + ToolShed.ListPlus + ToolShed.Options + ToolShed.SelfValidate + ToolShed.TimePure + ToolShed.Unsafe + + Build-depends: base == 4.* + + GHC-options: -Wall -O2 + GHC-prof-options: -prof -auto-all -caf-all + + if flag(haveDeepSeq) + Build-depends: deepseq >= 1.1 + CPP-options: -DHAVE_DEEPSEQ + + if impl(ghc >= 7.0) && flag(llvm) + GHC-options: -fllvm +