wasm-1.1.0: src/Language/Wasm/Parser.y
{
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DeriveAnyClass #-}
module Language.Wasm.Parser (
parseModule,
parseModuleFields,
parseScript,
desugarize,
ModuleField(..),
DataSegment(..),
ElemSegment(..),
StartFunction(..),
Export(..),
ExportDesc(..),
Table(..),
Memory(..),
Global(..),
Function(..),
LocalType(..),
Import(..),
ImportDesc(..),
Instruction(..),
TypeUse(..),
TypeDef(..),
PlainInstr(..),
Index(..),
Ident(..),
ParamType(..),
FuncType(..),
-- script
Script,
ModuleDef(..),
Command(..),
Action(..),
Assertion(..),
Meta(..)
) where
import Language.Wasm.Structure (
MemArg(..),
IUnOp(..),
IBinOp(..),
IRelOp(..),
FUnOp(..),
FBinOp(..),
FRelOp(..),
BitSize(..),
TableType(..),
ElemType(..),
Limit(..),
GlobalType(..),
ValueType(..)
)
import qualified Language.Wasm.Structure as S
import qualified Data.Text as T
import qualified Data.Text.Lazy as TL
import qualified Data.Text.Lazy.Encoding as TLEncoding
import qualified Data.Text.Lazy.Read as TLRead
import qualified Data.ByteString.Lazy as LBS
import qualified Data.ByteString.Lazy.Char8 as LBSChar8
import Data.Maybe (fromMaybe, fromJust, isNothing, catMaybes)
import Data.List (foldl', findIndex, find, nub)
import Control.Monad (guard, foldM)
import Control.Monad.Except (throwError)
import Numeric.Natural (Natural)
import Data.Word (Word32, Word64)
import Data.Bits ((.|.))
import Numeric.IEEE (infinity, nan, maxFinite)
import Language.Wasm.FloatUtils (doubleToFloat)
import Control.DeepSeq (NFData)
import GHC.Generics (Generic)
import Language.Wasm.Lexer (
Token (
TKeyword,
TIntLit,
TFloatLit,
TStringLit,
TId,
TOpenBracket,
TCloseBracket,
TReserved,
EOF
),
Lexeme(..),
AlexPosn(..),
asFloat,
asDouble,
doubleFromInteger
)
}
%name parseModule mod
%name parseModuleFields modAsFields
%name parseScript script
%monad { Either String }
%tokentype { Lexeme }
%token
'(' { Lexeme _ TOpenBracket }
')' { Lexeme _ TCloseBracket }
'func' { Lexeme _ (TKeyword "func") }
'param' { Lexeme _ (TKeyword "param") }
'result' { Lexeme _ (TKeyword "result") }
'i32' { Lexeme _ (TKeyword "i32") }
'i64' { Lexeme _ (TKeyword "i64") }
'f32' { Lexeme _ (TKeyword "f32") }
'f64' { Lexeme _ (TKeyword "f64") }
'mut' { Lexeme _ (TKeyword "mut") }
'funcref' { Lexeme _ (TKeyword "funcref") }
'type' { Lexeme _ (TKeyword "type") }
'unreachable' { Lexeme _ (TKeyword "unreachable") }
'nop' { Lexeme _ (TKeyword "nop") }
'br' { Lexeme _ (TKeyword "br") }
'br_if' { Lexeme _ (TKeyword "br_if") }
'br_table' { Lexeme _ (TKeyword "br_table") }
'return' { Lexeme _ (TKeyword "return") }
'call' { Lexeme _ (TKeyword "call") }
'call_indirect' { Lexeme _ (TKeyword "call_indirect") }
'drop' { Lexeme _ (TKeyword "drop") }
'select' { Lexeme _ (TKeyword "select") }
'get_local' { Lexeme _ (TKeyword "local.get") }
'set_local' { Lexeme _ (TKeyword "local.set") }
'tee_local' { Lexeme _ (TKeyword "local.tee") }
'get_global' { Lexeme _ (TKeyword "global.get") }
'set_global' { Lexeme _ (TKeyword "global.set") }
'i32.load' { Lexeme _ (TKeyword "i32.load") }
'i64.load' { Lexeme _ (TKeyword "i64.load") }
'f32.load' { Lexeme _ (TKeyword "f32.load") }
'f64.load' { Lexeme _ (TKeyword "f64.load") }
'i32.load8_s' { Lexeme _ (TKeyword "i32.load8_s") }
'i32.load8_u' { Lexeme _ (TKeyword "i32.load8_u") }
'i32.load16_s' { Lexeme _ (TKeyword "i32.load16_s") }
'i32.load16_u' { Lexeme _ (TKeyword "i32.load16_u") }
'i64.load8_s' { Lexeme _ (TKeyword "i64.load8_s") }
'i64.load8_u' { Lexeme _ (TKeyword "i64.load8_u") }
'i64.load16_s' { Lexeme _ (TKeyword "i64.load16_s") }
'i64.load16_u' { Lexeme _ (TKeyword "i64.load16_u") }
'i64.load32_s' { Lexeme _ (TKeyword "i64.load32_s") }
'i64.load32_u' { Lexeme _ (TKeyword "i64.load32_u") }
'i32.store' { Lexeme _ (TKeyword "i32.store") }
'i64.store' { Lexeme _ (TKeyword "i64.store") }
'f32.store' { Lexeme _ (TKeyword "f32.store") }
'f64.store' { Lexeme _ (TKeyword "f64.store") }
'i32.store8' { Lexeme _ (TKeyword "i32.store8") }
'i32.store16' { Lexeme _ (TKeyword "i32.store16") }
'i64.store8' { Lexeme _ (TKeyword "i64.store8") }
'i64.store16' { Lexeme _ (TKeyword "i64.store16") }
'i64.store32' { Lexeme _ (TKeyword "i64.store32") }
'memory.size' { Lexeme _ (TKeyword "memory.size") }
'memory.grow' { Lexeme _ (TKeyword "memory.grow") }
'i32.const' { Lexeme _ (TKeyword "i32.const") }
'i64.const' { Lexeme _ (TKeyword "i64.const") }
'f32.const' { Lexeme _ (TKeyword "f32.const") }
'f64.const' { Lexeme _ (TKeyword "f64.const") }
'i32.clz' { Lexeme _ (TKeyword "i32.clz") }
'i32.ctz' { Lexeme _ (TKeyword "i32.ctz") }
'i32.popcnt' { Lexeme _ (TKeyword "i32.popcnt") }
'i32.extend8_s' { Lexeme _ (TKeyword "i32.extend8_s") }
'i32.extend16_s' { Lexeme _ (TKeyword "i32.extend16_s") }
'i32.add' { Lexeme _ (TKeyword "i32.add") }
'i32.sub' { Lexeme _ (TKeyword "i32.sub") }
'i32.mul' { Lexeme _ (TKeyword "i32.mul") }
'i32.div_s' { Lexeme _ (TKeyword "i32.div_s") }
'i32.div_u' { Lexeme _ (TKeyword "i32.div_u") }
'i32.rem_s' { Lexeme _ (TKeyword "i32.rem_s") }
'i32.rem_u' { Lexeme _ (TKeyword "i32.rem_u") }
'i32.and' { Lexeme _ (TKeyword "i32.and") }
'i32.or' { Lexeme _ (TKeyword "i32.or") }
'i32.xor' { Lexeme _ (TKeyword "i32.xor") }
'i32.shl' { Lexeme _ (TKeyword "i32.shl") }
'i32.shr_s' { Lexeme _ (TKeyword "i32.shr_s") }
'i32.shr_u' { Lexeme _ (TKeyword "i32.shr_u") }
'i32.rotl' { Lexeme _ (TKeyword "i32.rotl") }
'i32.rotr' { Lexeme _ (TKeyword "i32.rotr") }
'i64.clz' { Lexeme _ (TKeyword "i64.clz") }
'i64.ctz' { Lexeme _ (TKeyword "i64.ctz") }
'i64.popcnt' { Lexeme _ (TKeyword "i64.popcnt") }
'i64.extend8_s' { Lexeme _ (TKeyword "i64.extend8_s") }
'i64.extend16_s' { Lexeme _ (TKeyword "i64.extend16_s") }
'i64.extend32_s' { Lexeme _ (TKeyword "i64.extend32_s") }
'i64.add' { Lexeme _ (TKeyword "i64.add") }
'i64.sub' { Lexeme _ (TKeyword "i64.sub") }
'i64.mul' { Lexeme _ (TKeyword "i64.mul") }
'i64.div_s' { Lexeme _ (TKeyword "i64.div_s") }
'i64.div_u' { Lexeme _ (TKeyword "i64.div_u") }
'i64.rem_s' { Lexeme _ (TKeyword "i64.rem_s") }
'i64.rem_u' { Lexeme _ (TKeyword "i64.rem_u") }
'i64.and' { Lexeme _ (TKeyword "i64.and") }
'i64.or' { Lexeme _ (TKeyword "i64.or") }
'i64.xor' { Lexeme _ (TKeyword "i64.xor") }
'i64.shl' { Lexeme _ (TKeyword "i64.shl") }
'i64.shr_s' { Lexeme _ (TKeyword "i64.shr_s") }
'i64.shr_u' { Lexeme _ (TKeyword "i64.shr_u") }
'i64.rotl' { Lexeme _ (TKeyword "i64.rotl") }
'i64.rotr' { Lexeme _ (TKeyword "i64.rotr") }
'f32.abs' { Lexeme _ (TKeyword "f32.abs") }
'f32.neg' { Lexeme _ (TKeyword "f32.neg") }
'f32.ceil' { Lexeme _ (TKeyword "f32.ceil") }
'f32.floor' { Lexeme _ (TKeyword "f32.floor") }
'f32.trunc' { Lexeme _ (TKeyword "f32.trunc") }
'f32.nearest' { Lexeme _ (TKeyword "f32.nearest") }
'f32.sqrt' { Lexeme _ (TKeyword "f32.sqrt") }
'f32.add' { Lexeme _ (TKeyword "f32.add") }
'f32.sub' { Lexeme _ (TKeyword "f32.sub") }
'f32.mul' { Lexeme _ (TKeyword "f32.mul") }
'f32.div' { Lexeme _ (TKeyword "f32.div") }
'f32.min' { Lexeme _ (TKeyword "f32.min") }
'f32.max' { Lexeme _ (TKeyword "f32.max") }
'f32.copysign' { Lexeme _ (TKeyword "f32.copysign") }
'f64.abs' { Lexeme _ (TKeyword "f64.abs") }
'f64.neg' { Lexeme _ (TKeyword "f64.neg") }
'f64.ceil' { Lexeme _ (TKeyword "f64.ceil") }
'f64.floor' { Lexeme _ (TKeyword "f64.floor") }
'f64.trunc' { Lexeme _ (TKeyword "f64.trunc") }
'f64.nearest' { Lexeme _ (TKeyword "f64.nearest") }
'f64.sqrt' { Lexeme _ (TKeyword "f64.sqrt") }
'f64.add' { Lexeme _ (TKeyword "f64.add") }
'f64.sub' { Lexeme _ (TKeyword "f64.sub") }
'f64.mul' { Lexeme _ (TKeyword "f64.mul") }
'f64.div' { Lexeme _ (TKeyword "f64.div") }
'f64.min' { Lexeme _ (TKeyword "f64.min") }
'f64.max' { Lexeme _ (TKeyword "f64.max") }
'f64.copysign' { Lexeme _ (TKeyword "f64.copysign") }
'i32.eqz' { Lexeme _ (TKeyword "i32.eqz") }
'i32.eq' { Lexeme _ (TKeyword "i32.eq") }
'i32.ne' { Lexeme _ (TKeyword "i32.ne") }
'i32.lt_s' { Lexeme _ (TKeyword "i32.lt_s") }
'i32.lt_u' { Lexeme _ (TKeyword "i32.lt_u") }
'i32.gt_s' { Lexeme _ (TKeyword "i32.gt_s") }
'i32.gt_u' { Lexeme _ (TKeyword "i32.gt_u") }
'i32.le_s' { Lexeme _ (TKeyword "i32.le_s") }
'i32.le_u' { Lexeme _ (TKeyword "i32.le_u") }
'i32.ge_s' { Lexeme _ (TKeyword "i32.ge_s") }
'i32.ge_u' { Lexeme _ (TKeyword "i32.ge_u") }
'i64.eqz' { Lexeme _ (TKeyword "i64.eqz") }
'i64.eq' { Lexeme _ (TKeyword "i64.eq") }
'i64.ne' { Lexeme _ (TKeyword "i64.ne") }
'i64.lt_s' { Lexeme _ (TKeyword "i64.lt_s") }
'i64.lt_u' { Lexeme _ (TKeyword "i64.lt_u") }
'i64.gt_s' { Lexeme _ (TKeyword "i64.gt_s") }
'i64.gt_u' { Lexeme _ (TKeyword "i64.gt_u") }
'i64.le_s' { Lexeme _ (TKeyword "i64.le_s") }
'i64.le_u' { Lexeme _ (TKeyword "i64.le_u") }
'i64.ge_s' { Lexeme _ (TKeyword "i64.ge_s") }
'i64.ge_u' { Lexeme _ (TKeyword "i64.ge_u") }
'f32.eq' { Lexeme _ (TKeyword "f32.eq") }
'f32.ne' { Lexeme _ (TKeyword "f32.ne") }
'f32.lt' { Lexeme _ (TKeyword "f32.lt") }
'f32.gt' { Lexeme _ (TKeyword "f32.gt") }
'f32.le' { Lexeme _ (TKeyword "f32.le") }
'f32.ge' { Lexeme _ (TKeyword "f32.ge") }
'f64.eq' { Lexeme _ (TKeyword "f64.eq") }
'f64.ne' { Lexeme _ (TKeyword "f64.ne") }
'f64.lt' { Lexeme _ (TKeyword "f64.lt") }
'f64.gt' { Lexeme _ (TKeyword "f64.gt") }
'f64.le' { Lexeme _ (TKeyword "f64.le") }
'f64.ge' { Lexeme _ (TKeyword "f64.ge") }
'i32.wrap_i64' { Lexeme _ (TKeyword "i32.wrap_i64") }
'i32.trunc_f32_s' { Lexeme _ (TKeyword "i32.trunc_f32_s") }
'i32.trunc_f32_u' { Lexeme _ (TKeyword "i32.trunc_f32_u") }
'i32.trunc_f64_s' { Lexeme _ (TKeyword "i32.trunc_f64_s") }
'i32.trunc_f64_u' { Lexeme _ (TKeyword "i32.trunc_f64_u") }
'i32.trunc_sat_f32_s' { Lexeme _ (TKeyword "i32.trunc_sat_f32_s") }
'i32.trunc_sat_f32_u' { Lexeme _ (TKeyword "i32.trunc_sat_f32_u") }
'i32.trunc_sat_f64_s' { Lexeme _ (TKeyword "i32.trunc_sat_f64_s") }
'i32.trunc_sat_f64_u' { Lexeme _ (TKeyword "i32.trunc_sat_f64_u") }
'i64.extend_i32_s' { Lexeme _ (TKeyword "i64.extend_i32_s") }
'i64.extend_i32_u' { Lexeme _ (TKeyword "i64.extend_i32_u") }
'i64.trunc_f32_s' { Lexeme _ (TKeyword "i64.trunc_f32_s") }
'i64.trunc_f32_u' { Lexeme _ (TKeyword "i64.trunc_f32_u") }
'i64.trunc_f64_s' { Lexeme _ (TKeyword "i64.trunc_f64_s") }
'i64.trunc_f64_u' { Lexeme _ (TKeyword "i64.trunc_f64_u") }
'i64.trunc_sat_f32_s' { Lexeme _ (TKeyword "i64.trunc_sat_f32_s") }
'i64.trunc_sat_f32_u' { Lexeme _ (TKeyword "i64.trunc_sat_f32_u") }
'i64.trunc_sat_f64_s' { Lexeme _ (TKeyword "i64.trunc_sat_f64_s") }
'i64.trunc_sat_f64_u' { Lexeme _ (TKeyword "i64.trunc_sat_f64_u") }
'f32.convert_i32_s' { Lexeme _ (TKeyword "f32.convert_i32_s") }
'f32.convert_i32_u' { Lexeme _ (TKeyword "f32.convert_i32_u") }
'f32.convert_i64_s' { Lexeme _ (TKeyword "f32.convert_i64_s") }
'f32.convert_i64_u' { Lexeme _ (TKeyword "f32.convert_i64_u") }
'f32.demote_f64' { Lexeme _ (TKeyword "f32.demote_f64") }
'f64.convert_i32_s' { Lexeme _ (TKeyword "f64.convert_i32_s") }
'f64.convert_i32_u' { Lexeme _ (TKeyword "f64.convert_i32_u") }
'f64.convert_i64_s' { Lexeme _ (TKeyword "f64.convert_i64_s") }
'f64.convert_i64_u' { Lexeme _ (TKeyword "f64.convert_i64_u") }
'f64.promote_f32' { Lexeme _ (TKeyword "f64.promote_f32") }
'i32.reinterpret_f32' { Lexeme _ (TKeyword "i32.reinterpret_f32") }
'i64.reinterpret_f64' { Lexeme _ (TKeyword "i64.reinterpret_f64") }
'f32.reinterpret_i32' { Lexeme _ (TKeyword "f32.reinterpret_i32") }
'f64.reinterpret_i64' { Lexeme _ (TKeyword "f64.reinterpret_i64") }
'block' { Lexeme _ (TKeyword "block") }
'loop' { Lexeme _ (TKeyword "loop") }
'if' { Lexeme _ (TKeyword "if") }
'else' { Lexeme _ (TKeyword "else") }
'end' { Lexeme _ (TKeyword "end") }
'then' { Lexeme _ (TKeyword "then") }
'table' { Lexeme _ (TKeyword "table") }
'memory' { Lexeme _ (TKeyword "memory") }
'global' { Lexeme _ (TKeyword "global") }
'import' { Lexeme _ (TKeyword "import") }
'export' { Lexeme _ (TKeyword "export") }
'local' { Lexeme _ (TKeyword "local") }
'elem' { Lexeme _ (TKeyword "elem") }
'data' { Lexeme _ (TKeyword "data") }
'offset' { Lexeme _ (TKeyword "offset") }
'start' { Lexeme _ (TKeyword "start") }
'module' { Lexeme _ (TKeyword "module") }
-- script extension
'binary' { Lexeme _ (TKeyword "binary") }
'quote' { Lexeme _ (TKeyword "quote") }
'register' { Lexeme _ (TKeyword "register") }
'invoke' { Lexeme _ (TKeyword "invoke") }
'get' { Lexeme _ (TKeyword "get") }
'assert_return' { Lexeme $$ (TKeyword "assert_return") }
'assert_return_canonical_nan' { Lexeme $$ (TKeyword "assert_return_canonical_nan") }
'assert_return_arithmetic_nan' { Lexeme $$ (TKeyword "assert_return_arithmetic_nan") }
'assert_trap' { Lexeme $$ (TKeyword "assert_trap") }
'assert_malformed' { Lexeme $$ (TKeyword "assert_malformed") }
'assert_invalid' { Lexeme $$ (TKeyword "assert_invalid") }
'assert_unlinkable' { Lexeme $$ (TKeyword "assert_unlinkable") }
'assert_exhaustion' { Lexeme $$ (TKeyword "assert_exhaustion") }
'script' { Lexeme _ (TKeyword "script") }
'input' { Lexeme _ (TKeyword "input") }
'output' { Lexeme _ (TKeyword "output") }
-- script extension end
id { Lexeme _ (TId $$) }
int { Lexeme _ (TIntLit $$) }
f64 { Lexeme _ (TFloatLit $$) }
offset { Lexeme _ (TKeyword (asOffset -> Just $$)) }
align { Lexeme _ (TKeyword (asAlign -> Just $$)) }
str { Lexeme _ (TStringLit $$) }
EOF { Lexeme _ EOF }
%%
string :: { TL.Text }
: str {%
case TLEncoding.decodeUtf8' $1 of
Right t -> Right t
Left err -> Left "invalid utf8 string"
}
name :: { TL.Text }
: string { $1 }
ident :: { Ident }
: id { Ident (TLEncoding.decodeUtf8 $1) }
valtype :: { ValueType }
: 'i32' { I32 }
| 'i64' { I64 }
| 'f32' { F32 }
| 'f64' { F64 }
index :: { Index }
: u32 { Index $1 }
| ident { Named $1 }
int32 :: { Integer }
: int {%
if $1 >= -(2^31) && $1 < 2^32
then Right $1
else Left ("Int literal value is out of signed int32 boundaries: " ++ show $1)
}
u32 :: { Natural }
: int {%
if $1 >= 0 && $1 < 2^32
then Right (fromIntegral $1)
else Left ("Int literal value is out of unsigned int32 boundaries: " ++ show $1)
}
int64 :: { Integer }
: int {%
if $1 >= -(2^63) && $1 < 2^64
then Right $1
else Left ("Int literal value is out of signed int64 boundaries: " ++ show $1)
}
float32 :: { Float }
: int {%
let maxInt = 340282356779733623858607532500980858880 in
if $1 <= maxInt && $1 >= -maxInt
then return $ fromIntegral $1
else Left "constant out of range"
}
| f64 {% asFloat $1 }
float64 :: { Double }
: int {%
let maxInt = round (maxFinite :: Double) in
if $1 <= maxInt && $1 >= -maxInt
then doubleFromInteger $1
else Left "constant out of range"
}
| f64 {% asDouble $1 }
plaininstr :: { PlainInstr }
-- control instructions
: 'unreachable' { Unreachable }
| 'nop' { Nop }
| 'br' index { Br $2 }
| 'br_if' index { BrIf $2 }
| 'br_table' rev_list1(index) { BrTable (reverse $ tail $2) (head $2) }
| 'return' { Return }
| 'call' index { Call $2 }
| 'drop' { Drop }
| 'select' { Select }
-- variable instructions
| 'get_local' index { GetLocal $2 }
| 'set_local' index { SetLocal $2 }
| 'tee_local' index { TeeLocal $2 }
| 'get_global' index { GetGlobal $2 }
| 'set_global' index { SetGlobal $2 }
-- memory instructions
| 'i32.load' memarg4 { I32Load $2 }
| 'i64.load' memarg8 { I64Load $2 }
| 'f32.load' memarg4 { F32Load $2 }
| 'f64.load' memarg8 { F64Load $2 }
| 'i32.load8_s' memarg1 { I32Load8S $2 }
| 'i32.load8_u' memarg1 { I32Load8U $2 }
| 'i32.load16_s' memarg2 { I32Load16S $2 }
| 'i32.load16_u' memarg2 { I32Load16U $2 }
| 'i64.load8_s' memarg1 { I64Load8S $2 }
| 'i64.load8_u' memarg1 { I64Load8U $2 }
| 'i64.load16_s' memarg2 { I64Load16S $2 }
| 'i64.load16_u' memarg2 { I64Load16U $2 }
| 'i64.load32_s' memarg4 { I64Load32S $2 }
| 'i64.load32_u' memarg4 { I64Load32U $2 }
| 'i32.store' memarg4 { I32Store $2 }
| 'i64.store' memarg8 { I64Store $2 }
| 'f32.store' memarg4 { F32Store $2 }
| 'f64.store' memarg8 { F64Store $2 }
| 'i32.store8' memarg1 { I32Store8 $2 }
| 'i32.store16' memarg2 { I32Store16 $2 }
| 'i64.store8' memarg1 { I64Store8 $2 }
| 'i64.store16' memarg2 { I64Store16 $2 }
| 'i64.store32' memarg4 { I64Store32 $2 }
| 'memory.size' { CurrentMemory }
| 'memory.grow' { GrowMemory }
-- numeric instructions
| 'i32.const' int32 { I32Const $2 }
| 'i64.const' int64 { I64Const $2 }
| 'f32.const' float32 { F32Const $2 }
| 'f64.const' float64 { F64Const $2 }
| 'i32.clz' { IUnOp BS32 IClz }
| 'i32.ctz' { IUnOp BS32 ICtz }
| 'i32.popcnt' { IUnOp BS32 IPopcnt }
| 'i32.extend8_s' { IUnOp BS32 IExtend8S }
| 'i32.extend16_s' { IUnOp BS32 IExtend16S }
| 'i32.add' { IBinOp BS32 IAdd }
| 'i32.sub' { IBinOp BS32 ISub }
| 'i32.mul' { IBinOp BS32 IMul }
| 'i32.div_s' { IBinOp BS32 IDivS }
| 'i32.div_u' { IBinOp BS32 IDivU }
| 'i32.rem_s' { IBinOp BS32 IRemS }
| 'i32.rem_u' { IBinOp BS32 IRemU }
| 'i32.and' { IBinOp BS32 IAnd }
| 'i32.or' { IBinOp BS32 IOr }
| 'i32.xor' { IBinOp BS32 IXor }
| 'i32.shl' { IBinOp BS32 IShl }
| 'i32.shr_s' { IBinOp BS32 IShrS }
| 'i32.shr_u' { IBinOp BS32 IShrU }
| 'i32.rotl' { IBinOp BS32 IRotl }
| 'i32.rotr' { IBinOp BS32 IRotr }
| 'i64.clz' { IUnOp BS64 IClz }
| 'i64.ctz' { IUnOp BS64 ICtz }
| 'i64.popcnt' { IUnOp BS64 IPopcnt }
| 'i64.extend8_s' { IUnOp BS64 IExtend8S }
| 'i64.extend16_s' { IUnOp BS64 IExtend16S }
| 'i64.extend32_s' { IUnOp BS64 IExtend32S }
| 'i64.add' { IBinOp BS64 IAdd }
| 'i64.sub' { IBinOp BS64 ISub }
| 'i64.mul' { IBinOp BS64 IMul }
| 'i64.div_s' { IBinOp BS64 IDivS }
| 'i64.div_u' { IBinOp BS64 IDivU }
| 'i64.rem_s' { IBinOp BS64 IRemS }
| 'i64.rem_u' { IBinOp BS64 IRemU }
| 'i64.and' { IBinOp BS64 IAnd }
| 'i64.or' { IBinOp BS64 IOr }
| 'i64.xor' { IBinOp BS64 IXor }
| 'i64.shl' { IBinOp BS64 IShl }
| 'i64.shr_s' { IBinOp BS64 IShrS }
| 'i64.shr_u' { IBinOp BS64 IShrU }
| 'i64.rotl' { IBinOp BS64 IRotl }
| 'i64.rotr' { IBinOp BS64 IRotr }
| 'f32.abs' { FUnOp BS32 FAbs }
| 'f32.neg' { FUnOp BS32 FNeg }
| 'f32.ceil' { FUnOp BS32 FCeil }
| 'f32.floor' { FUnOp BS32 FFloor }
| 'f32.trunc' { FUnOp BS32 FTrunc }
| 'f32.nearest' { FUnOp BS32 FNearest }
| 'f32.sqrt' { FUnOp BS32 FSqrt }
| 'f32.add' { FBinOp BS32 FAdd }
| 'f32.sub' { FBinOp BS32 FSub }
| 'f32.mul' { FBinOp BS32 FMul }
| 'f32.div' { FBinOp BS32 FDiv }
| 'f32.min' { FBinOp BS32 FMin }
| 'f32.max' { FBinOp BS32 FMax }
| 'f32.copysign' { FBinOp BS32 FCopySign }
| 'f64.abs' { FUnOp BS64 FAbs }
| 'f64.neg' { FUnOp BS64 FNeg }
| 'f64.ceil' { FUnOp BS64 FCeil }
| 'f64.floor' { FUnOp BS64 FFloor }
| 'f64.trunc' { FUnOp BS64 FTrunc }
| 'f64.nearest' { FUnOp BS64 FNearest }
| 'f64.sqrt' { FUnOp BS64 FSqrt }
| 'f64.add' { FBinOp BS64 FAdd }
| 'f64.sub' { FBinOp BS64 FSub }
| 'f64.mul' { FBinOp BS64 FMul }
| 'f64.div' { FBinOp BS64 FDiv }
| 'f64.min' { FBinOp BS64 FMin }
| 'f64.max' { FBinOp BS64 FMax }
| 'f64.copysign' { FBinOp BS64 FCopySign }
| 'i32.eqz' { I32Eqz }
| 'i32.eq' { IRelOp BS32 IEq }
| 'i32.ne' { IRelOp BS32 INe }
| 'i32.lt_s' { IRelOp BS32 ILtS }
| 'i32.lt_u' { IRelOp BS32 ILtU }
| 'i32.gt_s' { IRelOp BS32 IGtS }
| 'i32.gt_u' { IRelOp BS32 IGtU }
| 'i32.le_s' { IRelOp BS32 ILeS }
| 'i32.le_u' { IRelOp BS32 ILeU }
| 'i32.ge_s' { IRelOp BS32 IGeS }
| 'i32.ge_u' { IRelOp BS32 IGeU }
| 'i64.eqz' { I64Eqz }
| 'i64.eq' { IRelOp BS64 IEq }
| 'i64.ne' { IRelOp BS64 INe }
| 'i64.lt_s' { IRelOp BS64 ILtS }
| 'i64.lt_u' { IRelOp BS64 ILtU }
| 'i64.gt_s' { IRelOp BS64 IGtS }
| 'i64.gt_u' { IRelOp BS64 IGtU }
| 'i64.le_s' { IRelOp BS64 ILeS }
| 'i64.le_u' { IRelOp BS64 ILeU }
| 'i64.ge_s' { IRelOp BS64 IGeS }
| 'i64.ge_u' { IRelOp BS64 IGeU }
| 'f32.eq' { FRelOp BS32 FEq }
| 'f32.ne' { FRelOp BS32 FNe }
| 'f32.lt' { FRelOp BS32 FLt }
| 'f32.gt' { FRelOp BS32 FGt }
| 'f32.le' { FRelOp BS32 FLe }
| 'f32.ge' { FRelOp BS32 FGe }
| 'f64.eq' { FRelOp BS64 FEq }
| 'f64.ne' { FRelOp BS64 FNe }
| 'f64.lt' { FRelOp BS64 FLt }
| 'f64.gt' { FRelOp BS64 FGt }
| 'f64.le' { FRelOp BS64 FLe }
| 'f64.ge' { FRelOp BS64 FGe }
| 'i32.wrap_i64' { I32WrapI64 }
| 'i32.trunc_f32_s' { ITruncFS BS32 BS32 }
| 'i32.trunc_f32_u' { ITruncFU BS32 BS32 }
| 'i32.trunc_f64_s' { ITruncFS BS32 BS64 }
| 'i32.trunc_f64_u' { ITruncFU BS32 BS64 }
| 'i32.trunc_sat_f32_s' { ITruncSatFS BS32 BS32 }
| 'i32.trunc_sat_f32_u' { ITruncSatFU BS32 BS32 }
| 'i32.trunc_sat_f64_s' { ITruncSatFS BS32 BS64 }
| 'i32.trunc_sat_f64_u' { ITruncSatFU BS32 BS64 }
| 'i64.extend_i32_s' { I64ExtendSI32 }
| 'i64.extend_i32_u' { I64ExtendUI32 }
| 'i64.trunc_f32_s' { ITruncFS BS64 BS32 }
| 'i64.trunc_f32_u' { ITruncFU BS64 BS32 }
| 'i64.trunc_f64_s' { ITruncFS BS64 BS64 }
| 'i64.trunc_f64_u' { ITruncFU BS64 BS64 }
| 'i64.trunc_sat_f32_s' { ITruncSatFS BS64 BS32 }
| 'i64.trunc_sat_f32_u' { ITruncSatFU BS64 BS32 }
| 'i64.trunc_sat_f64_s' { ITruncSatFS BS64 BS64 }
| 'i64.trunc_sat_f64_u' { ITruncSatFU BS64 BS64 }
| 'f32.convert_i32_s' { FConvertIS BS32 BS32 }
| 'f32.convert_i32_u' { FConvertIU BS32 BS32 }
| 'f32.convert_i64_s' { FConvertIS BS32 BS64 }
| 'f32.convert_i64_u' { FConvertIU BS32 BS64 }
| 'f32.demote_f64' { F32DemoteF64 }
| 'f64.convert_i32_s' { FConvertIS BS64 BS32 }
| 'f64.convert_i32_u' { FConvertIU BS64 BS32 }
| 'f64.convert_i64_s' { FConvertIS BS64 BS64 }
| 'f64.convert_i64_u' { FConvertIU BS64 BS64 }
| 'f64.promote_f32' { F64PromoteF32 }
| 'i32.reinterpret_f32' { IReinterpretF BS32 }
| 'i64.reinterpret_f64' { IReinterpretF BS64 }
| 'f32.reinterpret_i32' { FReinterpretI BS32 }
| 'f64.reinterpret_i64' { FReinterpretI BS64 }
typeuse(next)
: '(' typeuse1(folded_instr_list(next), instruction_list(next)) {
let (tu, rest) = $2 in
let (next, instr) = either id id rest in
(tu, instr, next)
}
| instruction_list(next) { let (next, instr) = $1 in (emptyTypeUse, instr, next) }
typeuse1(close, next)
: 'type' index ')' typesign(close, next) {
case $4 of
(FuncType [] [], rest) -> (IndexedTypeUse $2 Nothing, rest)
(ft, rest) -> (IndexedTypeUse $2 (Just ft), rest)
}
| typesign1(close, next) {
let (fnType, rest) = $1 in
(AnonimousTypeUse fnType, rest)
}
typesign(close, next)
: '(' typesign1(close, next) { $2 }
| next { (emptyFuncType, Left $1) }
typesign1(close, next)
: 'param' list(valtype) ')' typesign(close, next) {
let (ft, rest) = $4 in
(mergeFuncType (FuncType (map (ParamType Nothing) $2) []) ft, rest)
}
| 'param' ident valtype ')' typesign(close, next) {
let (ft, rest) = $5 in
(mergeFuncType (FuncType [ParamType (Just $2) $3] []) ft, rest)
}
| typesign_result1(close, next) { $1 }
typesign_result(close, next)
: '(' typesign_result1(close, next) { $2 }
| next { (emptyFuncType, Left $1) }
typesign_result1(close, next)
: 'result' list(valtype) ')' typesign_result(close, next) {
let (ft, rest) = $4 in
(mergeFuncType (FuncType [] $2) ft, rest)
}
| close { (emptyFuncType, Right $1) }
never : EOF { () }
typedef :: { TypeDef }
: 'type' opt(ident) functype ')' { TypeDef $2 $3 }
functype :: { FuncType }
: '(' 'func' typesign(')', ')') { let (ft, _) = $3 in ft }
memarg1 :: { MemArg }
: opt(offset) opt(align) {% parseMemArg 1 $1 $2 }
memarg2 :: { MemArg }
: opt(offset) opt(align) {% parseMemArg 2 $1 $2 }
memarg4 :: { MemArg }
: opt(offset) opt(align) {% parseMemArg 4 $1 $2 }
memarg8 :: { MemArg }
: opt(offset) opt(align) {% parseMemArg 8 $1 $2 }
instruction_list(terminator)
: terminator { ($1, []) }
| plaininstr mixed_instruction_list(terminator) { ([PlainInstr $1] ++) `fmap` $2 }
| 'call_indirect' typeuse(terminator) {%
let (tu, instr, end) = $2 in
onlyAnonimParams tu >> (return (end, [PlainInstr $ CallIndirect tu] ++ instr))
}
| 'block' opt(ident) typeuse('end') opt(ident) mixed_instruction_list(terminator) {% do
let (tu, instr, _) = $3
matchIdents $2 $4
onlyAnonimParams tu
return $ ([BlockInstr $2 tu instr] ++) `fmap` $5
}
| 'loop' opt(ident) typeuse('end') opt(ident) mixed_instruction_list(terminator) {% do
let (tu, instr, _) = $3
matchIdents $2 $4
onlyAnonimParams tu
return $ ([LoopInstr $2 tu instr] ++) `fmap` $5
}
| 'if' opt(ident) typeuse(if_else) mixed_instruction_list(terminator) {% do
let (tu, trueBranch, (falseBranch, identAfter)) = $3
matchIdents $2 identAfter
onlyAnonimParams tu
return $ ([IfInstr $2 tu trueBranch falseBranch] ++) `fmap` $4
}
mixed_instruction_list(terminator)
: '(' folded_instr1 mixed_instruction_list(terminator) { ($2 ++) `fmap` $3 }
| instruction_list(terminator) { $1 }
if_else :: { ([Instruction], Maybe Ident) }
: 'end' opt(ident) { ([], $2) }
| 'else' opt(ident) mixed_instruction_list('end') opt(ident) {%
matchIdents $2 $4 >> return (snd $3, if isNothing $2 then $4 else $2)
}
folded_instr_list(terminator) : folded_instr1 mixed_instruction_list(terminator) { ($1 ++) `fmap` $2 }
folded_instr :: { [Instruction] }
: '(' folded_instr1 { $2 }
folded_instr1 :: { [Instruction] }
: plaininstr mixed_instruction_list(')') { snd $2 ++ [PlainInstr $1] }
| 'call_indirect' typeuse(')') {%
let (tu, instr, _) = $2 in
onlyAnonimParams tu >> (return $ instr ++ [PlainInstr $ CallIndirect tu])
}
| 'block' opt(ident) typeuse(')') {%
let (typeUse, instr, _) = $3 in
onlyAnonimParams typeUse >> (return [BlockInstr $2 typeUse instr])
}
| 'loop' opt(ident) typeuse(')') {%
let (typeUse, instr, _) = $3 in
onlyAnonimParams typeUse >> (return [LoopInstr $2 typeUse instr])
}
| 'if' opt(ident) '(' typeuse1(folded_then_else, never) {%
let (typeUse, Right (pred, (trueBranch, falseBranch))) = $4 in
onlyAnonimParams typeUse >> (return $ pred ++ [IfInstr $2 typeUse trueBranch falseBranch])
}
folded_then_else :: { ([Instruction], ([Instruction], [Instruction])) }
: 'then' mixed_instruction_list(')') folded_else { ([], (snd $2, $3)) }
| folded_instr1 '(' folded_then_else {
let (pred, branches) = $3 in
($1 ++ pred, branches)
}
folded_else :: { [Instruction] }
: ')' { [] }
| '(' 'else' mixed_instruction_list(')') ')' { snd $3 }
importdesc :: { ImportDesc }
: 'func' opt(ident) typeuse(')') {
let (ft, _, _) = $3 in ImportFunc $2 ft
}
| 'table' opt(ident) tabletype ')' { ImportTable $2 $3 }
| 'memory' opt(ident) limits ')' { ImportMemory $2 $3 }
| 'global' opt(ident) globaltype ')' { ImportGlobal $2 $3 }
import :: { Import }
: 'import' name name '(' importdesc ')' { Import [] $2 $3 $5 }
-- FUNCTION --
function :: { ModuleField }
: 'func' opt(ident) export_import_typeuse_locals_body {%
case $3 $2 of
mf@(MFFunc fn) -> checkLocalIdentUniqueness fn >> return mf
mf -> return mf
}
export_import_typeuse_locals_body :: { Maybe Ident -> ModuleField }
: instruction_list(')') {
\i -> MFFunc emptyFunction { ident = i, body = snd $1 }
}
| '(' export_import_typeuse_locals_body1 { $2 }
export_import_typeuse_locals_body1 :: { Maybe Ident -> ModuleField }
: 'export' name ')' export_import_typeuse_locals_body {
\ident ->
case $4 ident of
MFImport imp -> MFImport imp { reExportAs = $2 : reExportAs imp }
MFFunc func -> MFFunc func { exportFuncAs = $2 : exportFuncAs func }
_ -> error "unexpected field"
}
| import_typeuse_locals_body1 { $1 }
import_typeuse_locals_body1 :: { Maybe Ident -> ModuleField }
: 'import' name name ')' typeuse(')') {
let (ft, _, _) = $5 in
\ident -> MFImport $ Import [] $2 $3 $ ImportFunc ident ft
}
| typeuse1(func_mid1, instruction_list(')')) {
let (funcType, rest) = $1 in
let (locals, body) = either (\a -> ([], snd a)) id rest in
\ident -> MFFunc $ emptyFunction { locals, body, ident, funcType }
}
func_mid :: { ([LocalType], [Instruction]) }
: instruction_list(')') { ([], snd $1) }
| '(' func_mid1 { $2 }
func_mid1 :: { ([LocalType], [Instruction]) }
: 'local' list(valtype) ')' func_mid { (map (LocalType Nothing) $2 ++ fst $4, snd $4) }
| 'local' ident valtype ')' func_mid { (LocalType (Just $2) $3 : fst $5, snd $5) }
| folded_instr_list(')') { ([], snd $1) }
-- FUNCTION END --
-- GLOBAL --
global :: { ModuleField }
: 'global' opt(ident) global_type_export_import { $3 $2 }
globaltype :: { GlobalType }
: valtype { Const $1 }
| '(' 'mut' valtype ')' { Mut $3 }
global_type_export_import :: { Maybe Ident -> ModuleField }
: valtype mixed_instruction_list(')') { \ident -> MFGlobal $ Global [] ident (Const $1) $ snd $2 }
| '(' global_mut_export_import { $2 }
global_mut_export_import :: { Maybe Ident -> ModuleField }
: 'mut' valtype ')' mixed_instruction_list(')') { \ident -> MFGlobal $ Global [] ident (Mut $2) $ snd $4 }
| 'export' name ')' global_type_export_import {
\ident ->
case $4 ident of
MFImport imp -> MFImport imp { reExportAs = $2 : reExportAs imp }
MFGlobal global -> MFGlobal global { exportGlobalAs = $2 : exportGlobalAs global }
_ -> error "unexpected field"
}
| 'import' name name ')' globaltype ')' {
\ident -> MFImport $ Import [] $2 $3 $ ImportGlobal ident $5
}
-- GLOBAL END --
-- MEMORY --
memory :: { [ModuleField] }
: 'memory' opt(ident) memory_limits_export_import { $3 $2 }
memory_limits_export_import :: { Maybe Ident -> [ModuleField] }
: memory_limits { $1 }
| '(' memory_limits_export_import1 { $2 }
datastring :: { LBS.ByteString }
: list(str) { LBS.concat $1 }
memory_limits_export_import1 :: { Maybe Ident -> [ModuleField] }
: 'export' name ')' memory_limits_export_import {
\ident ->
case $4 ident of
[MFImport imp] -> [MFImport imp { reExportAs = $2 : reExportAs imp }]
(MFMem (Memory exps i l)):rest -> (MFMem (Memory ($2:exps) i l)):rest
_ -> error "unexpected field"
}
| 'import' name name ')' limits ')' {
\ident -> [MFImport $ Import [] $2 $3 $ ImportMemory ident $5]
}
| 'data' datastring ')' ')' {
\ident ->
let m = fromIntegral $ LBS.length $2 in
[
MFMem $ Memory [] ident $ Limit m $ Just m,
MFData $ DataSegment (fromMaybe (Index 0) $ Named `fmap` ident) [PlainInstr $ I32Const 0] $2
]
}
memory_limits :: { Maybe Ident -> [ModuleField] }
: limits ')' { \ident -> [MFMem $ Memory [] ident $1] }
-- MEMOTY END --
-- TABLE --
limits :: { Limit }
: u32 opt(u32) { Limit (fromIntegral $1) (fromIntegral `fmap` $2) }
elemtype :: { ElemType }
: 'funcref' { FuncRef }
tabletype :: { TableType }
: limits elemtype { TableType $1 $2 }
table :: { [ModuleField] }
: 'table' opt(ident) limits_elemtype_elem { $3 $2 }
limits_elemtype_elem :: { Maybe Ident -> [ModuleField] }
: tabletype ')' { \ident -> [MFTable $ Table [] ident $1] }
| elemtype '(' 'elem' list(index) ')' ')' {
\ident ->
let funcsLen = fromIntegral $ length $4 in [
MFTable $ Table [] ident $ TableType (Limit funcsLen (Just funcsLen)) $1,
MFElem $ ElemSegment (fromMaybe (Index 0) $ Named `fmap` ident) [PlainInstr $ I32Const 0] $4
]
}
| '(' import_export_table { $2 }
import_export_table :: { Maybe Ident -> [ModuleField] }
: 'import' name name ')' tabletype ')' {
\ident -> [MFImport $ Import [] $2 $3 $ ImportTable ident $5]
}
| 'export' name ')' limits_elemtype_elem {
\ident ->
case $4 ident of
[MFImport imp] -> [MFImport imp { reExportAs = $2 : reExportAs imp }]
(MFTable (Table exps i t)):rest -> (MFTable (Table ($2:exps) i t)):rest
_ -> error "unexpected field"
}
-- TABLE END --
exportdesc :: { ExportDesc }
: 'func' index ')' { ExportFunc $2 }
| 'table' index ')' { ExportTable $2 }
| 'memory' index ')' { ExportMemory $2 }
| 'global' index ')' { ExportGlobal $2 }
export :: { Export }
: 'export' name '(' exportdesc ')' { Export $2 $4 }
start :: { StartFunction }
: 'start' index ')' { StartFunction $2 }
-- TODO: Spec from 09 Jan 2018 declares 'offset' keyword as mandatory,
-- but collection of testcases omits 'offset' in this position
-- I am going to support both options for now, but maybe it has to be updated in future.
offsetexpr :: { [Instruction] }
: 'offset' mixed_instruction_list(')') { snd $2 }
| folded_instr1 { $1 }
elemsegment :: { ElemSegment }
: 'elem' opt(index) '(' offsetexpr list(index) ')' { ElemSegment (fromMaybe (Index 0) $2) $4 $5 }
datasegment :: { DataSegment }
: 'data' opt(index) '(' offsetexpr datastring ')' { DataSegment (fromMaybe (Index 0) $2) $4 $5 }
modulefield1_single :: { ModuleField }
: typedef { MFType $1 }
| import { MFImport $1 }
| export { MFExport $1 }
| start { MFStart $1 }
| elemsegment { MFElem $1 }
| datasegment { MFData $1 }
| function { $1 }
| global { $1 }
modulefield1_multi :: { [ModuleField] }
: table { $1 }
| memory { $1 }
modulefield1 :: { [ModuleField] }
: modulefield1_single { [$1] }
| modulefield1_multi { $1 }
modulefield :: { [ModuleField] }
: '(' modulefield1 { $2 }
modAsFields :: { [ModuleField] }
: '(' 'module' list(modulefield) ')' EOF { concat $3 }
| '(' modulefield1 list(modulefield) EOF { $2 ++ concat $3}
mod :: { S.Module }
: modAsFields {% desugarize $1 }
-- Wasm Script Extended Grammar
script :: { Script }
: '(' command1 list(command) EOF { $2 : $3 }
| '(' modulefield1 list(modulefield) EOF {%
(\m -> [ModuleDef $ RawModDef Nothing m]) `fmap` (desugarize $ $2 ++ concat $3)
}
command :: { Command }
: '(' command1 { $2 }
command1 :: { Command }
: module1 { ModuleDef $1 }
| 'register' string opt(ident) ')' { Register $2 $3 }
| action1 { Action $1 }
| assertion1 { let (Just (AlexPn _ line _), a) = $1 in Assertion line a }
| meta1 { Meta $1 }
module1 :: { ModuleDef }
: 'module' opt(ident) 'binary' datastring ')' { BinaryModDef $2 $4 }
| 'module' opt(ident) 'quote' list(string) ')' { TextModDef $2 (TL.concat $4) }
| 'module' opt(ident) list(modulefield) ')' {% RawModDef $2 `fmap` (desugarize $ concat $3) }
action1 :: { Action }
: 'invoke' opt(ident) string list(folded_instr) ')' { Invoke $2 $3 (map (map constInstructionToValue) $4) }
| 'get' opt(ident) string ')' { Get $2 $3 }
assertion1 :: { (Maybe AlexPosn, Assertion) }
: 'assert_return' '(' action1 list(folded_instr) ')' { ($1, AssertReturn $3 (map (map constInstructionToValue) $4)) }
| 'assert_return_canonical_nan' '(' action1 ')' { ($1, AssertReturnCanonicalNaN $3) }
| 'assert_return_arithmetic_nan' '(' action1 ')' { ($1, AssertReturnArithmeticNaN $3) }
| 'assert_trap' '(' assertion_trap string ')' { ($1, AssertTrap $3 $4) }
| 'assert_malformed' '(' module1 string ')' { ($1, AssertMalformed $3 $4) }
| 'assert_invalid' '(' module1 string ')' { ($1, AssertInvalid $3 $4) }
| 'assert_unlinkable' '(' module1 string ')' { ($1, AssertUnlinkable $3 $4) }
| 'assert_exhaustion' '(' action1 string ')' { ($1, AssertExhaustion $3 $4) }
assertion_trap :: { Either Action ModuleDef }
: action1 { Left $1 }
| module1 { Right $1 }
meta1 :: { Meta }
: 'script' opt(ident) script ')' { Script $2 $3 }
| 'input' opt(ident) string ')' { Input $2 $3 }
| 'output' opt(ident) string ')' { Output $2 $3 }
-- utils
rev_list(p)
: rev_list(p) p { $2 : $1 }
| {- empty -} { [] }
rev_list1(p)
: rev_list1(p) p { $2 : $1 }
| p { [$1] }
list(p)
: rev_list(p) { reverse $1 }
opt(p)
: p { Just $1 }
| {- empty -} { Nothing }
{
-- partial function by intention
prependFuncParams :: [ParamType] -> Function -> Function
prependFuncParams prep f@(Function { funcType = AnonimousTypeUse ft }) =
f { funcType = AnonimousTypeUse $ ft { params = prep ++ params ft } }
prependFuncResults :: [ValueType] -> Function -> Function
prependFuncResults prep f@(Function { funcType = AnonimousTypeUse ft }) =
f { funcType = AnonimousTypeUse $ ft { results = prep ++ results ft } }
mergeFuncType :: FuncType -> FuncType -> FuncType
mergeFuncType (FuncType lps lrs) (FuncType rps rrs) = FuncType (lps ++ rps) (lrs ++ rrs)
matchIdents :: Maybe Ident -> Maybe Ident -> Either String ()
matchIdents Nothing Nothing = return ()
matchIdents (Just a) (Just b) = if a == b then return () else throwError "mismatching label"
matchIdents Nothing (Just _) = throwError "mismatching label"
matchIdents (Just _) Nothing = return ()
onlyAnonimParams :: TypeUse -> Either String ()
onlyAnonimParams (IndexedTypeUse _ (Just ft)) = onlyAnonimFT ft
onlyAnonimParams (AnonimousTypeUse ft) = onlyAnonimFT ft
onlyAnonimParams _ = return ()
onlyAnonimFT :: FuncType -> Either String ()
onlyAnonimFT (FuncType params _) = mapM_ isAnonim params
where
isAnonim ParamType{ ident = Just _ } =
throwError "only anonimous params allowed in block signatures"
isAnonim _ = return ()
checkLocalIdentUniqueness :: Function -> Either String Function
checkLocalIdentUniqueness fn@Function { funcType, locals } =
let ps = case funcType of
(AnonimousTypeUse ft) -> params ft
IndexedTypeUse _ ft -> params $ fromMaybe emptyFuncType ft
in
let allIdents = (catMaybes $ map (\(LocalType { ident }) -> ident) locals)
++ (catMaybes $ map (\(ParamType { ident }) -> ident) ps)
in
if nub allIdents == allIdents
then return fn
else throwError "duplicate local"
asOffset :: LBS.ByteString -> Maybe Natural
asOffset str = do
num <- TL.stripPrefix "offset=" $ TLEncoding.decodeUtf8 str
fromIntegral . fst <$> eitherToMaybe (TLRead.decimal num)
asAlign :: LBS.ByteString -> Maybe Natural
asAlign str = do
num <- TL.stripPrefix "align=" $ TLEncoding.decodeUtf8 str
fromIntegral . fst <$> eitherToMaybe (TLRead.decimal num)
parseMemArg :: Natural -> Maybe Natural -> Maybe Natural -> Either String MemArg
parseMemArg defAlign optOffset optAlign = do
let offset = fromMaybe 0 optOffset
let parsedAlign = fromIntegral $ fromMaybe defAlign optAlign
if parsedAlign == 0 then Left "alignment" else return ()
let align = fromIntegral $ round $ logBase 2 parsedAlign
if 2 ^ align /= parsedAlign then Left "alignment" else return ()
if offset >= 2 ^ 32 || align >= 2 ^ 32
then Left "u32 is out of boundaries"
else return $ MemArg offset align
eitherToMaybe :: Either left right -> Maybe right
eitherToMaybe = either (const Nothing) Just
integerToWord32 :: Integer -> Word32
integerToWord32 i
| i >= 0 && i <= 2 ^ 32 = fromIntegral i
| i < 0 && i >= -(2 ^ 31) = 0xFFFFFFFF - (fromIntegral (abs i)) + 1
| otherwise = error "I32 is out of bounds."
integerToWord64 :: Integer -> Word64
integerToWord64 i
| i >= 0 && i <= 2 ^ 64 = fromIntegral i
| i < 0 && i >= -(2 ^ 63) = 0xFFFFFFFFFFFFFFFF - (fromIntegral (abs i)) + 1
| otherwise = error "I64 is out of bounds."
data FuncType = FuncType { params :: [ParamType], results :: [ValueType] } deriving (Show, Eq, Generic, NFData)
emptyFuncType :: FuncType
emptyFuncType = FuncType [] []
data ParamType = ParamType {
ident :: Maybe Ident,
paramType :: ValueType
} deriving (Show, Eq, Generic, NFData)
newtype Ident = Ident TL.Text deriving (Show, Eq, Generic, NFData)
data Index = Named Ident | Index Natural deriving (Show, Eq, Generic, NFData)
type LabelIndex = Index
type FuncIndex = Index
type TypeIndex = Index
type LocalIndex = Index
type GlobalIndex = Index
type TableIndex = Index
type MemoryIndex = Index
data PlainInstr =
-- Control instructions
Unreachable
| Nop
| Br LabelIndex
| BrIf LabelIndex
| BrTable [LabelIndex] LabelIndex
| Return
| Call FuncIndex
| CallIndirect TypeUse
-- Parametric instructions
| Drop
| Select
-- Variable instructions
| GetLocal LocalIndex
| SetLocal LocalIndex
| TeeLocal LocalIndex
| GetGlobal GlobalIndex
| SetGlobal GlobalIndex
-- Memory instructions
| I32Load MemArg
| I64Load MemArg
| F32Load MemArg
| F64Load MemArg
| I32Load8S MemArg
| I32Load8U MemArg
| I32Load16S MemArg
| I32Load16U MemArg
| I64Load8S MemArg
| I64Load8U MemArg
| I64Load16S MemArg
| I64Load16U MemArg
| I64Load32S MemArg
| I64Load32U MemArg
| I32Store MemArg
| I64Store MemArg
| F32Store MemArg
| F64Store MemArg
| I32Store8 MemArg
| I32Store16 MemArg
| I64Store8 MemArg
| I64Store16 MemArg
| I64Store32 MemArg
| CurrentMemory
| GrowMemory
-- Numeric instructions
| I32Const Integer
| I64Const Integer
| F32Const Float
| F64Const Double
| IUnOp BitSize IUnOp
| IBinOp BitSize IBinOp
| I32Eqz
| I64Eqz
| IRelOp BitSize IRelOp
| FUnOp BitSize FUnOp
| FBinOp BitSize FBinOp
| FRelOp BitSize FRelOp
| I32WrapI64
| ITruncFU {- Int Size -} BitSize {- Float Size -} BitSize
| ITruncFS {- Int Size -} BitSize {- Float Size -} BitSize
| ITruncSatFU {- Int Size -} BitSize {- Float Size -} BitSize
| ITruncSatFS {- Int Size -} BitSize {- Float Size -} BitSize
| I64ExtendSI32
| I64ExtendUI32
| FConvertIU {- Float Size -} BitSize {- Int Size -} BitSize
| FConvertIS {- Float Size -} BitSize {- Int Size -} BitSize
| F32DemoteF64
| F64PromoteF32
| IReinterpretF BitSize
| FReinterpretI BitSize
deriving (Show, Eq, Generic, NFData)
data TypeDef = TypeDef (Maybe Ident) FuncType deriving (Show, Eq, Generic, NFData)
data TypeUse =
IndexedTypeUse TypeIndex (Maybe FuncType)
| AnonimousTypeUse FuncType
deriving (Show, Eq, Generic, NFData)
emptyTypeUse = AnonimousTypeUse emptyFuncType
data Instruction =
PlainInstr PlainInstr
| BlockInstr {
label :: Maybe Ident,
blockType :: TypeUse,
body :: [Instruction]
}
| LoopInstr {
label :: Maybe Ident,
blockType :: TypeUse,
body :: [Instruction]
}
| IfInstr {
label :: Maybe Ident,
blockType :: TypeUse,
trueBranch :: [Instruction],
falseBranch :: [Instruction]
}
deriving (Show, Eq, Generic, NFData)
data Import = Import {
reExportAs :: [TL.Text],
sourceModule :: TL.Text,
name :: TL.Text,
desc :: ImportDesc
} deriving (Show, Eq, Generic, NFData)
data ImportDesc =
ImportFunc (Maybe Ident) TypeUse
| ImportTable (Maybe Ident) TableType
| ImportMemory (Maybe Ident) Limit
| ImportGlobal (Maybe Ident) GlobalType
deriving (Show, Eq, Generic, NFData)
data LocalType = LocalType {
ident :: Maybe Ident,
localType :: ValueType
} deriving (Show, Eq, Generic, NFData)
data Function = Function {
exportFuncAs :: [TL.Text],
ident :: Maybe Ident,
funcType :: TypeUse,
locals :: [LocalType],
body :: [Instruction]
}
deriving (Show, Eq, Generic, NFData)
emptyFunction :: Function
emptyFunction =
Function {
exportFuncAs = [],
ident = Nothing,
funcType = AnonimousTypeUse emptyFuncType,
locals = [],
body = []
}
data Global = Global {
exportGlobalAs :: [TL.Text],
ident :: Maybe Ident,
globalType :: GlobalType,
initializer :: [Instruction]
}
deriving (Show, Eq, Generic, NFData)
data Memory = Memory [TL.Text] (Maybe Ident) Limit deriving (Show, Eq, Generic, NFData)
data Table = Table [TL.Text] (Maybe Ident) TableType deriving (Show, Eq, Generic, NFData)
data ExportDesc =
ExportFunc FuncIndex
| ExportTable TableIndex
| ExportMemory MemoryIndex
| ExportGlobal GlobalIndex
deriving (Show, Eq, Generic, NFData)
data Export = Export {
name :: TL.Text,
desc :: ExportDesc
}
deriving (Show, Eq, Generic, NFData)
data StartFunction = StartFunction FuncIndex deriving (Show, Eq, Generic, NFData)
data ElemSegment = ElemSegment {
tableIndex :: TableIndex,
offset :: [Instruction],
funcIndexes :: [FuncIndex]
}
deriving (Show, Eq, Generic, NFData)
data DataSegment = DataSegment {
memIndex :: MemoryIndex,
offset :: [Instruction],
datastring :: LBS.ByteString
}
deriving (Show, Eq, Generic, NFData)
data ModuleField =
MFType TypeDef
| MFImport Import
| MFFunc Function
| MFTable Table
| MFMem Memory
| MFGlobal Global
| MFExport Export
| MFStart StartFunction
| MFElem ElemSegment
| MFData DataSegment
deriving(Show, Eq, Generic, NFData)
happyError (Lexeme _ EOF : []) = Left $ "Error occuried during parsing phase at the end of file"
happyError (Lexeme Nothing tok : tokens) = Left $ "Error occuried during parsing phase at the end of file"
happyError (Lexeme (Just (AlexPn abs line col)) tok : tokens) = Left $
"Error occuried during parsing phase. " ++
"Line " ++ show line ++ ", " ++
"Column " ++ show col ++ ", " ++
"Token " ++ show tok ++ ". " ++
"Token lookahed: " ++ show (take 3 tokens)
data Module = Module {
types :: [TypeDef],
functions :: [Function],
tables :: [Table],
mems :: [Memory],
globals :: [Global],
elems :: [ElemSegment],
datas :: [DataSegment],
start :: Maybe StartFunction,
imports :: [Import],
exports :: [Export]
} deriving (Show, Eq)
type Script = [Command]
data ModuleDef
= RawModDef (Maybe Ident) S.Module
| TextModDef (Maybe Ident) TL.Text
| BinaryModDef (Maybe Ident) LBS.ByteString
deriving (Show, Eq)
data Command
= ModuleDef ModuleDef
| Register TL.Text (Maybe Ident)
| Action Action
| Assertion Int Assertion
| Meta Meta
deriving (Show, Eq)
data Action
= Invoke (Maybe Ident) TL.Text [S.Expression]
| Get (Maybe Ident) TL.Text
deriving (Show, Eq)
type FailureString = TL.Text
data Assertion
= AssertReturn Action [S.Expression]
| AssertReturnCanonicalNaN Action
| AssertReturnArithmeticNaN Action
| AssertTrap (Either Action ModuleDef) FailureString
| AssertMalformed ModuleDef FailureString
| AssertInvalid ModuleDef FailureString
| AssertUnlinkable ModuleDef FailureString
| AssertExhaustion Action FailureString
deriving (Show, Eq)
data Meta
= Script (Maybe Ident) Script
| Input (Maybe Ident) TL.Text
| Output (Maybe Ident) TL.Text
deriving (Show, Eq)
type Labels = [Maybe Ident]
data FunCtx = FunCtx {
ctxMod :: Module,
ctxLabels :: Labels,
ctxLocals :: [LocalType],
ctxParams :: [ParamType]
} deriving (Eq, Show)
constInstructionToValue :: Instruction -> S.Instruction Natural
constInstructionToValue (PlainInstr (I32Const v)) = S.I32Const $ integerToWord32 v
constInstructionToValue (PlainInstr (F32Const v)) = S.F32Const v
constInstructionToValue (PlainInstr (I64Const v)) = S.I64Const $ integerToWord64 v
constInstructionToValue (PlainInstr (F64Const v)) = S.F64Const v
constInstructionToValue _ = error "Only const instructions supported as arguments for actions"
desugarize :: [ModuleField] -> Either String S.Module
desugarize fields = do
checkImportsOrder fields
checkStartCount fields
let mod = Module {
types = reverse $ foldl' extractTypeDef (reverse $ explicitTypeDefs fields) fields,
functions = extract extractFunction fields,
tables = extract extractTable fields,
imports = extract extractImport fields,
mems = extract extractMemory fields,
globals = extract extractGlobal fields,
elems = extract extractElemSegment fields,
datas = extract extractDataSegment fields,
start = extractStart fields,
exports = []
}
funs <- mapM (synFunctionToStruct mod) $ functions mod
elements <- mapM (synElemToStruct mod) $ elems mod
segments <- mapM (synDataToStruct mod) $ datas mod
globs <- mapM (synGlobalToStruct mod) $ globals mod
checkFuncIdentsUniqueness mod
checkTableIdentsUniqueness mod
checkMemoryIdentsUniqueness mod
checkGlobalIdentsUniqueness mod
return S.Module {
S.types = map synTypeDefToStruct $ types mod,
S.functions = funs,
S.tables = map synTableToStruct $ tables mod,
S.imports = map (synImportToStruct $ types mod) $ imports mod,
S.elems = elements,
S.datas = segments,
S.mems = map synMemoryToStruct $ mems mod,
S.globals = globs,
S.start = fmap (synStartToStruct mod) $ start mod,
S.exports = synExportsToStruct mod $ extractExports mod fields
}
where
-- utils
extract :: ([a] -> ModuleField -> [a]) -> [ModuleField] -> [a]
extract extractor = reverse . foldl' extractor []
findWithIndex :: (a -> Bool) -> [a] -> Maybe (a, Int)
findWithIndex pred l = find (pred . fst) $ zip l [0..]
-- types
synTypeDefToStruct :: TypeDef -> S.FuncType
synTypeDefToStruct (TypeDef _ FuncType { params, results }) =
S.FuncType (map paramType params) results
explicitTypeDefs :: [ModuleField] -> [TypeDef]
explicitTypeDefs = map (\(MFType def) -> def) . filter isTypeDef
where
isTypeDef (MFType _) = True
isTypeDef _ = False
checkImportsOrder :: [ModuleField] -> Either String ()
checkImportsOrder fields = foldM checkDef False fields >> return ()
where
checkDef nonImportOccured (MFImport _) =
if nonImportOccured
then Left "Import sections have to be before any definition"
else Right False
checkDef _ (MFFunc _) = return True
checkDef _ (MFGlobal _) = return True
checkDef _ (MFMem _) = return True
checkDef _ (MFTable _) = return True
checkDef nonImportOccured _ = return nonImportOccured
checkStartCount :: [ModuleField] -> Either String ()
checkStartCount fields = foldM checkDef False fields >> return ()
where
checkDef startOccured (MFStart _) =
if startOccured
then Left "Multiple start sections"
else Right True
checkDef startOccured _ = return startOccured
extractTypeDef :: [TypeDef] -> ModuleField -> [TypeDef]
extractTypeDef defs (MFType _) = defs -- should be extracted before implicit defs
extractTypeDef defs (MFImport Import { desc = ImportFunc _ typeUse }) =
matchTypeUse defs typeUse
extractTypeDef defs (MFFunc Function { funcType, body }) =
extractTypeDefFromInstructions (matchTypeUse defs funcType) body
extractTypeDef defs (MFGlobal Global { initializer }) =
extractTypeDefFromInstructions defs initializer
extractTypeDef defs (MFElem ElemSegment { offset }) =
extractTypeDefFromInstructions defs offset
extractTypeDef defs (MFData DataSegment { offset }) =
extractTypeDefFromInstructions defs offset
extractTypeDef defs _ = defs
extractTypeDefFromInstructions :: [TypeDef] -> [Instruction] -> [TypeDef]
extractTypeDefFromInstructions = foldl' extractTypeDefFromInstruction
extractTypeDefFromInstruction :: [TypeDef] -> Instruction -> [TypeDef]
extractTypeDefFromInstruction defs (PlainInstr (CallIndirect typeUse)) =
matchTypeUse defs typeUse
extractTypeDefFromInstruction defs (BlockInstr { body, blockType }) =
extractTypeDefFromInstructions (matchTypeUse defs blockType) body
extractTypeDefFromInstruction defs (LoopInstr { body, blockType }) =
extractTypeDefFromInstructions (matchTypeUse defs blockType) body
extractTypeDefFromInstruction defs (IfInstr { blockType, trueBranch, falseBranch }) =
extractTypeDefFromInstructions (matchTypeUse defs blockType) $ trueBranch ++ falseBranch
extractTypeDefFromInstruction defs _ = defs
funcTypesEq :: FuncType -> FuncType -> Bool
funcTypesEq l r =
let paramTypes = map paramType . params in
paramTypes l == paramTypes r && results l == results r
matchTypeFunc :: FuncType -> TypeDef -> Bool
matchTypeFunc funcType (TypeDef _ ft) = funcTypesEq ft funcType
matchTypeUse :: [TypeDef] -> TypeUse -> [TypeDef]
matchTypeUse defs (AnonimousTypeUse funcType) =
if any (matchTypeFunc funcType) defs
then defs
else (TypeDef Nothing funcType) : defs
matchTypeUse defs _ = defs
nth :: Natural -> [a] -> Maybe a
nth 0 (x : xs) = Just x
nth n (_ : xs) = nth (n - 1) xs
nth _ _ = Nothing
getTypeIndex :: [TypeDef] -> TypeUse -> Maybe Natural
getTypeIndex defs (AnonimousTypeUse funcType) =
fromIntegral <$> findIndex (matchTypeFunc funcType) defs
getTypeIndex defs (IndexedTypeUse (Named ident) (Just funcType)) = do
(def, idx) <- findWithIndex (\(TypeDef i _) -> i == Just ident) defs
guard $ matchTypeFunc funcType def
return $ fromIntegral idx
getTypeIndex defs (IndexedTypeUse (Named ident) Nothing) =
fromIntegral <$> findIndex (\(TypeDef i _) -> i == Just ident) defs
getTypeIndex defs (IndexedTypeUse (Index n) (Just funcType)) = do
def <- nth n defs
guard $ matchTypeFunc funcType def
return n
getTypeIndex defs (IndexedTypeUse (Index n) Nothing) = return n
-- imports
synImportToStruct :: [TypeDef] -> Import -> S.Import
synImportToStruct defs (Import _ mod name (ImportFunc _ typeUse)) =
case getTypeIndex defs typeUse of
Just idx -> S.Import mod name $ S.ImportFunc idx
Nothing -> error $ "cannot find type index for function import: " ++ show typeUse
synImportToStruct _ (Import _ mod name (ImportTable _ tableType)) =
S.Import mod name $ S.ImportTable tableType
synImportToStruct _ (Import _ mod name (ImportMemory _ limit)) =
S.Import mod name $ S.ImportMemory limit
synImportToStruct _ (Import _ mod name (ImportGlobal _ globalType)) =
S.Import mod name $ S.ImportGlobal globalType
extractImport :: [Import] -> ModuleField -> [Import]
extractImport imports (MFImport imp) = imp : imports
extractImport imports _ = imports
unwrapLabel ctx labelIdx =
case getLabelIdx ctx labelIdx of
Just i -> Right i
Nothing -> Left "unknown label"
-- functions
synInstrToStruct :: FunCtx -> Instruction -> Either String (S.Instruction Natural)
synInstrToStruct _ (PlainInstr Unreachable) = return S.Unreachable
synInstrToStruct _ (PlainInstr Nop) = return S.Nop
synInstrToStruct ctx (PlainInstr (Br labelIdx)) =
S.Br <$> unwrapLabel ctx labelIdx
synInstrToStruct ctx (PlainInstr (BrIf labelIdx)) =
S.BrIf <$> unwrapLabel ctx labelIdx
synInstrToStruct ctx (PlainInstr (BrTable lbls lbl)) = do
labels <- mapM (unwrapLabel ctx) lbls
S.BrTable labels <$> unwrapLabel ctx lbl
synInstrToStruct _ (PlainInstr Return) = return S.Return
synInstrToStruct FunCtx { ctxMod } (PlainInstr (Call funIdx)) =
case getFuncIndex ctxMod funIdx of
Just idx -> return $ S.Call idx
Nothing -> Left "unknown function"
synInstrToStruct FunCtx { ctxMod = Module { types } } (PlainInstr (CallIndirect typeUse)) =
case getTypeIndex types typeUse of
Just idx -> return $ S.CallIndirect idx
Nothing -> Left "unknown type"
synInstrToStruct _ (PlainInstr Drop) = return $ S.Drop
synInstrToStruct _ (PlainInstr Select) = return $ S.Select
synInstrToStruct ctx (PlainInstr (GetLocal localIdx)) =
case getLocalIndex ctx localIdx of
Just idx -> return $ S.GetLocal idx
Nothing -> Left "unknown local"
synInstrToStruct ctx (PlainInstr (SetLocal localIdx)) =
case getLocalIndex ctx localIdx of
Just idx -> return $ S.SetLocal idx
Nothing -> Left "unknown local"
synInstrToStruct ctx (PlainInstr (TeeLocal localIdx)) =
case getLocalIndex ctx localIdx of
Just idx -> return $ S.TeeLocal idx
Nothing -> Left "unknown local"
synInstrToStruct FunCtx { ctxMod } (PlainInstr (GetGlobal globalIdx)) =
case getGlobalIndex ctxMod globalIdx of
Just idx -> return $ S.GetGlobal idx
Nothing -> Left "unknown global"
synInstrToStruct FunCtx { ctxMod } (PlainInstr (SetGlobal globalIdx)) =
case getGlobalIndex ctxMod globalIdx of
Just idx -> return $ S.SetGlobal idx
Nothing -> Left "unknown global"
synInstrToStruct _ (PlainInstr (I32Load memArg)) = return $ S.I32Load memArg
synInstrToStruct _ (PlainInstr (I64Load memArg)) = return $ S.I64Load memArg
synInstrToStruct _ (PlainInstr (F32Load memArg)) = return $ S.F32Load memArg
synInstrToStruct _ (PlainInstr (F64Load memArg)) = return $ S.F64Load memArg
synInstrToStruct _ (PlainInstr (I32Load8S memArg)) = return $ S.I32Load8S memArg
synInstrToStruct _ (PlainInstr (I32Load8U memArg)) = return $ S.I32Load8U memArg
synInstrToStruct _ (PlainInstr (I32Load16S memArg)) = return $ S.I32Load16S memArg
synInstrToStruct _ (PlainInstr (I32Load16U memArg)) = return $ S.I32Load16U memArg
synInstrToStruct _ (PlainInstr (I64Load8S memArg)) = return $ S.I64Load8S memArg
synInstrToStruct _ (PlainInstr (I64Load8U memArg)) = return $ S.I64Load8U memArg
synInstrToStruct _ (PlainInstr (I64Load16S memArg)) = return $ S.I64Load16S memArg
synInstrToStruct _ (PlainInstr (I64Load16U memArg)) = return $ S.I64Load16U memArg
synInstrToStruct _ (PlainInstr (I64Load32S memArg)) = return $ S.I64Load32S memArg
synInstrToStruct _ (PlainInstr (I64Load32U memArg)) = return $ S.I64Load32U memArg
synInstrToStruct _ (PlainInstr (I32Store memArg)) = return $ S.I32Store memArg
synInstrToStruct _ (PlainInstr (I64Store memArg)) = return $ S.I64Store memArg
synInstrToStruct _ (PlainInstr (F32Store memArg)) = return $ S.F32Store memArg
synInstrToStruct _ (PlainInstr (F64Store memArg)) = return $ S.F64Store memArg
synInstrToStruct _ (PlainInstr (I32Store8 memArg)) = return $ S.I32Store8 memArg
synInstrToStruct _ (PlainInstr (I32Store16 memArg)) = return $ S.I32Store16 memArg
synInstrToStruct _ (PlainInstr (I64Store8 memArg)) = return $ S.I64Store8 memArg
synInstrToStruct _ (PlainInstr (I64Store16 memArg)) = return $ S.I64Store16 memArg
synInstrToStruct _ (PlainInstr (I64Store32 memArg)) = return $ S.I64Store32 memArg
synInstrToStruct _ (PlainInstr CurrentMemory) = return $ S.CurrentMemory
synInstrToStruct _ (PlainInstr GrowMemory) = return $ S.GrowMemory
synInstrToStruct _ (PlainInstr (I32Const val)) = return $ S.I32Const $ integerToWord32 val
synInstrToStruct _ (PlainInstr (I64Const val)) = return $ S.I64Const $ integerToWord64 val
synInstrToStruct _ (PlainInstr (F32Const val)) = return $ S.F32Const val
synInstrToStruct _ (PlainInstr (F64Const val)) = return $ S.F64Const val
synInstrToStruct _ (PlainInstr (IUnOp sz op)) = return $ S.IUnOp sz op
synInstrToStruct _ (PlainInstr (IBinOp sz op)) = return $ S.IBinOp sz op
synInstrToStruct _ (PlainInstr I32Eqz) = return $ S.I32Eqz
synInstrToStruct _ (PlainInstr I64Eqz) = return $ S.I64Eqz
synInstrToStruct _ (PlainInstr (IRelOp sz op)) = return $ S.IRelOp sz op
synInstrToStruct _ (PlainInstr (FUnOp sz op)) = return $ S.FUnOp sz op
synInstrToStruct _ (PlainInstr (FBinOp sz op)) = return $ S.FBinOp sz op
synInstrToStruct _ (PlainInstr (FRelOp sz op)) = return $ S.FRelOp sz op
synInstrToStruct _ (PlainInstr I32WrapI64) = return $ S.I32WrapI64
synInstrToStruct _ (PlainInstr (ITruncFU sz sz')) = return $ S.ITruncFU sz sz'
synInstrToStruct _ (PlainInstr (ITruncFS sz sz')) = return $ S.ITruncFS sz sz'
synInstrToStruct _ (PlainInstr (ITruncSatFU sz sz')) = return $ S.ITruncSatFU sz sz'
synInstrToStruct _ (PlainInstr (ITruncSatFS sz sz')) = return $ S.ITruncSatFS sz sz'
synInstrToStruct _ (PlainInstr I64ExtendSI32) = return $ S.I64ExtendSI32
synInstrToStruct _ (PlainInstr I64ExtendUI32) = return $ S.I64ExtendUI32
synInstrToStruct _ (PlainInstr (FConvertIU sz sz')) = return $ S.FConvertIU sz sz'
synInstrToStruct _ (PlainInstr (FConvertIS sz sz')) = return $ S.FConvertIS sz sz'
synInstrToStruct _ (PlainInstr F32DemoteF64) = return $ S.F32DemoteF64
synInstrToStruct _ (PlainInstr F64PromoteF32) = return $ S.F64PromoteF32
synInstrToStruct _ (PlainInstr (IReinterpretF sz)) = return $ S.IReinterpretF sz
synInstrToStruct _ (PlainInstr (FReinterpretI sz)) = return $ S.FReinterpretI sz
synInstrToStruct ctx@FunCtx { ctxMod = Module { types } } BlockInstr {label, blockType, body} = do
let ctx' = ctx { ctxLabels = label : ctxLabels ctx }
bt <- case blockType of
AnonimousTypeUse (FuncType [] []) -> return $ S.Inline Nothing
AnonimousTypeUse (FuncType [] [vt]) -> return $ S.Inline (Just vt)
typed -> case getTypeIndex types typed of
Just idx -> return $ S.TypeIndex idx
Nothing -> Left "unknown type"
S.Block bt <$> mapM (synInstrToStruct ctx') body
synInstrToStruct ctx@FunCtx { ctxMod = Module { types } } LoopInstr {label, blockType, body} = do
let ctx' = ctx { ctxLabels = label : ctxLabels ctx }
bt <- case blockType of
AnonimousTypeUse (FuncType [] []) -> return $ S.Inline Nothing
AnonimousTypeUse (FuncType [] [vt]) -> return $ S.Inline (Just vt)
typed -> case getTypeIndex types typed of
Just idx -> return $ S.TypeIndex idx
Nothing -> Left "unknown type"
S.Loop bt <$> mapM (synInstrToStruct ctx') body
synInstrToStruct ctx@FunCtx { ctxMod = Module { types } } IfInstr {label, blockType, trueBranch, falseBranch} = do
let ctx' = ctx { ctxLabels = label : ctxLabels ctx }
bt <- case blockType of
AnonimousTypeUse (FuncType [] []) -> return $ S.Inline Nothing
AnonimousTypeUse (FuncType [] [vt]) -> return $ S.Inline (Just vt)
typed -> case getTypeIndex types typed of
Just idx -> return $ S.TypeIndex idx
Nothing -> Left "unknown type"
trueBranch' <- mapM (synInstrToStruct ctx') trueBranch
falseBranch' <- mapM (synInstrToStruct ctx') falseBranch
return $ S.If bt trueBranch' falseBranch'
synFunctionToStruct :: Module -> Function -> Either String S.Function
synFunctionToStruct mod Function { funcType, locals, body } = do
typeIdx <- (
case getTypeIndex (types mod) funcType of
Just idx -> Right idx
Nothing -> Left "Type was not found or type signature doesn't match with type"
)
-- we have to use local func params declaration,
-- coz it can contain own names for them
let
params = case funcType of
IndexedTypeUse _ (Just FuncType { params }) -> params
AnonimousTypeUse FuncType { params } -> params
_ ->
if fromIntegral typeIdx < length (types mod)
then let TypeDef _ FuncType { params } = types mod !! fromIntegral typeIdx in params
else []
let ctx = FunCtx mod [] locals params
instructions <- mapM (synInstrToStruct ctx) body
return S.Function {
S.funcType = typeIdx,
S.localTypes = map localType locals,
S.body = instructions
}
extractFunction :: [Function] -> ModuleField -> [Function]
extractFunction funcs (MFFunc fun) = fun : funcs
extractFunction funcs _ = funcs
getLabelIdx :: FunCtx -> LabelIndex -> Maybe Natural
getLabelIdx FunCtx { ctxLabels } (Named id) =
fromIntegral <$> findIndex (\ident -> ident == Just id) ctxLabels
getLabelIdx FunCtx { ctxLabels } (Index idx) =
Just idx
getLocalIndex :: FunCtx -> LabelIndex -> Maybe Natural
getLocalIndex FunCtx {ctxParams, ctxLocals} (Named id) =
case findIndex (\(ParamType ident _) -> ident == Just id) ctxParams of
Just idx -> return $ fromIntegral idx
Nothing ->
let isIdent (LocalType ident _) = ident == Just id in
fromIntegral . (+ length ctxParams) <$> findIndex isIdent ctxLocals
getLocalIndex FunCtx {ctxParams, ctxLocals} (Index idx) = Just idx
isFuncImport :: Import -> Bool
isFuncImport Import { desc = ImportFunc _ _ } = True
isFuncImport _ = False
checkFuncIdentsUniqueness :: Module -> Either String ()
checkFuncIdentsUniqueness m@Module { imports, functions } = do
mapM_ checkImportUniqueness $ filter isFuncImport imports
mapM_ checkFuncUniqueness functions
where
checkImportUniqueness Import { desc = ImportFunc (Just id) _ } =
if length (getFuncIndexes m id) > 1
then throwError "duplicate func"
else return ()
checkImportUniqueness _ = return ()
checkFuncUniqueness Function { ident = Just id } =
if length (getFuncIndexes m id) > 1
then throwError "duplicate func"
else return ()
checkFuncUniqueness _ = return ()
getFuncIndexes :: Module -> Ident -> [Natural]
getFuncIndexes Module { imports, functions } id =
let funcImports = zip [0..] $ filter isFuncImport imports in
let importIndexes = map fst $ filter (\(_, Import { desc = ImportFunc ident _ }) -> ident == Just id) funcImports in
let isIdent (_, Function { ident }) = ident == Just id in
let funcIndexes = map fst $ filter isIdent $ zip [length funcImports..] functions in
map fromIntegral $ importIndexes ++ funcIndexes
getFuncIndex :: Module -> FuncIndex -> Maybe Natural
getFuncIndex mod (Named id) =
case getFuncIndexes mod id of
[idx] -> return idx
_ -> Nothing
getFuncIndex _ (Index idx) = Just idx
-- tables
synTableToStruct :: Table -> S.Table
synTableToStruct (Table _ _ tableType) = S.Table tableType
checkTableIdentsUniqueness :: Module -> Either String ()
checkTableIdentsUniqueness m@Module { imports, tables } = do
mapM_ checkImportUniqueness $ filter isTableImport imports
mapM_ checkTableUniqueness tables
where
checkImportUniqueness Import { desc = ImportTable (Just id) _ } =
if length (getTableIndexes m id) > 1
then throwError "duplicate table"
else return ()
checkImportUniqueness _ = return ()
checkTableUniqueness (Table _ (Just id) _) =
if length (getTableIndexes m id) > 1
then throwError "duplicate table"
else return ()
checkTableUniqueness _ = return ()
extractTable :: [Table] -> ModuleField -> [Table]
extractTable tables (MFTable table) = table : tables
extractTable tables _ = tables
isTableImport :: Import -> Bool
isTableImport Import { desc = ImportTable _ _ } = True
isTableImport _ = False
getTableIndexes :: Module -> Ident -> [Natural]
getTableIndexes Module { imports, tables } id =
let tableImports = zip [0..] $ filter isTableImport imports in
let importIndexes = map fst $ filter (\(_, Import { desc = ImportTable ident _ }) -> ident == Just id) tableImports in
let isIdent (_, (Table _ ident _)) = ident == Just id in
let tableIndexes = map fst $ filter isIdent $ zip [length tableImports..] tables in
map fromIntegral $ importIndexes ++ tableIndexes
getTableIndex :: Module -> TableIndex -> Maybe Natural
getTableIndex mod (Named id) =
case getTableIndexes mod id of
[idx] -> return idx
_ -> Nothing
getTableIndex _ (Index idx) = Just idx
-- memory
synMemoryToStruct :: Memory -> S.Memory
synMemoryToStruct (Memory _ _ limits) = S.Memory limits
checkMemoryIdentsUniqueness :: Module -> Either String ()
checkMemoryIdentsUniqueness m@Module { imports, mems } = do
mapM_ checkImportUniqueness $ filter isMemImport imports
mapM_ checkMemUniqueness mems
where
checkImportUniqueness Import { desc = ImportMemory (Just id) _ } =
if length (getMemIndexes m id) > 1
then Left "duplicate memory"
else return ()
checkImportUniqueness _ = return ()
checkMemUniqueness (Memory _ (Just id) _) =
if length (getMemIndexes m id) > 1
then Left "duplicate memory"
else return ()
checkMemUniqueness _ = return ()
extractMemory :: [Memory] -> ModuleField -> [Memory]
extractMemory mems (MFMem mem) = mem : mems
extractMemory mems _ = mems
isMemImport :: Import -> Bool
isMemImport Import { desc = ImportMemory _ _ } = True
isMemImport _ = False
getMemIndexes :: Module -> Ident -> [Natural]
getMemIndexes Module { imports, mems } id =
let memImports = zip [0..] $ filter isMemImport imports in
let importIndexes = map fst $ filter (\(_, Import { desc = ImportMemory ident _ }) -> ident == Just id) memImports in
let isIdent (_, (Memory _ ident _)) = ident == Just id in
let memIndexes = map fst $ filter isIdent $ zip [length memImports..] mems in
map fromIntegral $ importIndexes ++ memIndexes
getMemIndex :: Module -> MemoryIndex -> Maybe Natural
getMemIndex mod (Named id) =
case getMemIndexes mod id of
[idx] -> return idx
_ -> Nothing
getMemIndex _ (Index idx) = Just idx
-- global
synGlobalToStruct :: Module -> Global -> Either String S.Global
synGlobalToStruct mod Global { globalType, initializer } =
let ctx = FunCtx mod [] [] [] in
S.Global globalType <$> mapM (synInstrToStruct ctx) initializer
checkGlobalIdentsUniqueness :: Module -> Either String ()
checkGlobalIdentsUniqueness m@Module { imports, globals } = do
mapM_ checkImportUniqueness $ filter isGlobalImport imports
mapM_ checkGlobalUniqueness globals
where
checkImportUniqueness Import { desc = ImportGlobal (Just id) _ } =
if length (getGlobalIndexes m id) > 1
then Left "duplicate global"
else return ()
checkImportUniqueness _ = return ()
checkGlobalUniqueness (Global _ (Just id) _ _) =
if length (getGlobalIndexes m id) > 1
then Left "duplicate global"
else return ()
checkGlobalUniqueness _ = return ()
extractGlobal :: [Global] -> ModuleField -> [Global]
extractGlobal globals (MFGlobal global) = global : globals
extractGlobal globals _ = globals
isGlobalImport :: Import -> Bool
isGlobalImport Import { desc = ImportGlobal _ _ } = True
isGlobalImport _ = False
getGlobalIndexes :: Module -> Ident -> [Natural]
getGlobalIndexes Module { imports, globals } id =
let globalImports = zip [0..] $ filter isGlobalImport imports in
let importIndexes = map fst $ filter (\(_, Import { desc = ImportGlobal ident _ }) -> ident == Just id) globalImports in
let isIdent (_, Global { ident }) = ident == Just id in
let globalIndexes = map fst $ filter isIdent $ zip [length globalImports..] globals in
map fromIntegral $ importIndexes ++ globalIndexes
getGlobalIndex :: Module -> GlobalIndex -> Maybe Natural
getGlobalIndex mod@Module { imports, globals } (Named id) =
case getGlobalIndexes mod id of
[idx] -> return idx
_ -> Nothing
getGlobalIndex Module { imports, globals } (Index idx) = Just idx
-- elem segment
synElemToStruct :: Module -> ElemSegment -> Either String S.ElemSegment
synElemToStruct mod ElemSegment { tableIndex, offset, funcIndexes } =
let ctx = FunCtx mod [] [] [] in
let offsetInstrs = mapM (synInstrToStruct ctx) offset in
let idx = fromJust $ getTableIndex mod tableIndex in
let indexes = map (fromJust . getFuncIndex mod) funcIndexes in
S.ElemSegment idx <$> offsetInstrs <*> return indexes
extractElemSegment :: [ElemSegment] -> ModuleField -> [ElemSegment]
extractElemSegment elems (MFElem elem) = elem : elems
extractElemSegment elems _ = elems
-- data segment
synDataToStruct :: Module -> DataSegment -> Either String S.DataSegment
synDataToStruct mod DataSegment { memIndex, offset, datastring } =
let ctx = FunCtx mod [] [] [] in
let offsetInstrs = mapM (synInstrToStruct ctx) offset in
let idx = fromJust $ getMemIndex mod memIndex in
S.DataSegment idx <$> offsetInstrs <*> return datastring
extractDataSegment :: [DataSegment] -> ModuleField -> [DataSegment]
extractDataSegment datas (MFData dataSegment) = dataSegment : datas
extractDataSegment datas _ = datas
-- start
synStartToStruct :: Module -> StartFunction -> S.StartFunction
synStartToStruct mod (StartFunction funIdx) =
S.StartFunction $ fromJust $ getFuncIndex mod funIdx
extractStart :: [ModuleField] -> Maybe StartFunction
extractStart = foldl' extractStart' Nothing
extractStart' :: Maybe StartFunction -> ModuleField -> Maybe StartFunction
extractStart' _ (MFStart start) = Just start
extractStart' start _ = start
-- exports
extractExports :: Module -> [ModuleField] -> [ModuleField]
extractExports mod mf =
let initial = (funcImportLength, globImportLength, memImportLength, tableImportLength, []) in
let (_, _, _, _, result) = foldl' extractExport initial mf in
reverse result
where
funcImportLength = fromIntegral $ length $ filter isFuncImport $ imports mod
globImportLength = fromIntegral $ length $ filter isGlobalImport $ imports mod
memImportLength = fromIntegral $ length $ filter isMemImport $ imports mod
tableImportLength = fromIntegral $ length $ filter isTableImport $ imports mod
extractExport (fidx, gidx, midx, tidx, mf) (MFFunc fun@Function{ exportFuncAs }) =
let exports = map (\name -> MFExport $ Export name $ ExportFunc $ Index fidx) exportFuncAs in
(fidx + 1, gidx, midx, tidx, [MFFunc fun] ++ exports ++ mf)
extractExport (fidx, gidx, midx, tidx, mf) (MFGlobal glob@Global{ exportGlobalAs }) =
let exports = map (\name -> MFExport $ Export name $ ExportGlobal $ Index gidx) exportGlobalAs in
(fidx, gidx + 1, midx, tidx, [MFGlobal glob] ++ exports ++ mf)
extractExport (fidx, gidx, midx, tidx, mf) (MFMem (Memory exps i l)) =
let exports = map (\name -> MFExport $ Export name $ ExportMemory $ Index midx) exps in
(fidx, gidx, midx + 1, tidx, [MFMem (Memory exps i l)] ++ exports ++ mf)
extractExport (fidx, gidx, midx, tidx, mf) (MFTable (Table exps i t)) =
let exports = map (\name -> MFExport $ Export name $ ExportTable $ Index tidx) exps in
(fidx, gidx, midx, tidx + 1, [MFTable (Table exps i t)] ++ exports ++ mf)
extractExport (fidx, gidx, midx, tidx, mf) f = (fidx, gidx, midx, tidx, f:mf)
synExportsToStruct :: Module -> [ModuleField] -> [S.Export]
synExportsToStruct mod (MFExport Export { name, desc = ExportFunc idx } : rest) =
let exp = S.Export name $ S.ExportFunc $ fromJust $ getFuncIndex mod idx in
exp : synExportsToStruct mod rest
synExportsToStruct mod (MFExport Export { name, desc = ExportTable idx } : rest) =
let exp = S.Export name $ S.ExportTable $ fromJust $ getTableIndex mod idx in
exp : synExportsToStruct mod rest
synExportsToStruct mod (MFExport Export { name, desc = ExportMemory idx } : rest) =
let exp = S.Export name $ S.ExportMemory $ fromJust $ getMemIndex mod idx in
exp : synExportsToStruct mod rest
synExportsToStruct mod (MFExport Export { name, desc = ExportGlobal idx } : rest) =
let exp = S.Export name $ S.ExportGlobal $ fromJust $ getGlobalIndex mod idx in
exp : synExportsToStruct mod rest
synExportsToStruct mod (_ : rest) = synExportsToStruct mod rest
synExportsToStruct _ [] = []
}