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haskell-wasm/src/Language/Wasm/Parser.y
T
Ilya Rezvov edbdeaec46 start instruction evaluator
2018-03-14 21:12:01 -07:00

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{
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE DuplicateRecordFields #-}
{-# LANGUAGE NamedFieldPuns #-}
module Language.Wasm.Parser (
parseModule,
parseModuleFields,
desugarize,
ModuleField(..),
DataSegment(..),
ElemSegment(..),
StartFunction(..),
Export(..),
ExportDesc(..),
Table(..),
Memory(..),
Global(..),
Function(..),
LocalType(..),
Import(..),
ImportDesc(..),
Instruction(..),
TypeUse(..),
TypeDef(..),
PlainInstr(..),
Index(..),
Ident(..),
ParamType(..),
FuncType(..)
) 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 Data.Maybe (fromMaybe, fromJust)
import Data.List (foldl', findIndex, find)
import Control.Monad (guard)
import Numeric.Natural (Natural)
import Data.Word (Word32, Word64)
import Data.Bits ((.|.))
import Language.Wasm.Lexer (
Token (
TKeyword,
TIntLit,
TFloatLit,
TStringLit,
TId,
TOpenBracket,
TCloseBracket,
TReserved,
EOF
),
Lexeme(..),
AlexPosn(..)
)
import Debug.Trace as Debug
}
%name parseModule mod
%name parseModuleFields modAsFields
%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") }
'anyfunc' { Lexeme _ (TKeyword "anyfunc") }
'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 "get_local") }
'set_local' { Lexeme _ (TKeyword "set_local") }
'tee_local' { Lexeme _ (TKeyword "tee_local") }
'get_global' { Lexeme _ (TKeyword "get_global") }
'set_global' { Lexeme _ (TKeyword "set_global") }
'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") }
'current_memory' { Lexeme _ (TKeyword "current_memory") }
'grow_memory' { Lexeme _ (TKeyword "grow_memory") }
'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.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.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_s/f32' { Lexeme _ (TKeyword "i32.trunc_s/f32") }
'i32.trunc_u/f32' { Lexeme _ (TKeyword "i32.trunc_u/f32") }
'i32.trunc_s/f64' { Lexeme _ (TKeyword "i32.trunc_s/f64") }
'i32.trunc_u/f64' { Lexeme _ (TKeyword "i32.trunc_u/f64") }
'i64.extend_s/i32' { Lexeme _ (TKeyword "i64.extend_s/i32") }
'i64.extend_u/i32' { Lexeme _ (TKeyword "i64.extend_u/i32") }
'i64.trunc_s/f32' { Lexeme _ (TKeyword "i64.trunc_s/f32") }
'i64.trunc_u/f32' { Lexeme _ (TKeyword "i64.trunc_u/f32") }
'i64.trunc_s/f64' { Lexeme _ (TKeyword "i64.trunc_s/f64") }
'i64.trunc_u/f64' { Lexeme _ (TKeyword "i64.trunc_u/f64") }
'f32.convert_s/i32' { Lexeme _ (TKeyword "f32.convert_s/i32") }
'f32.convert_u/i32' { Lexeme _ (TKeyword "f32.convert_u/i32") }
'f32.convert_s/i64' { Lexeme _ (TKeyword "f32.convert_s/i64") }
'f32.convert_u/i64' { Lexeme _ (TKeyword "f32.convert_u/i64") }
'f32.demote/f64' { Lexeme _ (TKeyword "f32.demote/f64") }
'f64.convert_s/i32' { Lexeme _ (TKeyword "f64.convert_s/i32") }
'f64.convert_u/i32' { Lexeme _ (TKeyword "f64.convert_u/i32") }
'f64.convert_s/i64' { Lexeme _ (TKeyword "f64.convert_s/i64") }
'f64.convert_u/i64' { Lexeme _ (TKeyword "f64.convert_u/i64") }
'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") }
id { Lexeme _ (TId $$) }
u32 { Lexeme _ (TIntLit (asUInt32 -> Just $$)) }
i32 { Lexeme _ (TIntLit (asInt32 -> Just $$)) }
i64 { Lexeme _ (TIntLit (asInt64 -> Just $$)) }
f32 { Lexeme _ (TFloatLit (asFloat32 -> $$)) }
f64 { Lexeme _ (TFloatLit (asFloat64 -> $$)) }
offset { Lexeme _ (TKeyword (asOffset -> Just $$)) }
align { Lexeme _ (TKeyword (asAlign -> Just $$)) }
string { Lexeme _ (TStringLit (asString -> Just $$)) }
EOF { Lexeme _ EOF }
%%
name :: { TL.Text }
: string { $1 }
ident :: { Ident }
: id { Ident (TL.toStrict (TLEncoding.decodeUtf8 $1)) }
valtype :: { ValueType }
: 'i32' { I32 }
| 'i64' { I64 }
| 'f32' { F32 }
| 'f64' { F64 }
labelidx :: { LabelIndex }
: u32 { Index $1 }
| ident { Named $1 }
funcidx :: { FuncIndex }
: u32 { Index $1 }
| ident { Named $1 }
typeidx :: { TypeIndex }
: u32 { Index $1 }
| ident { Named $1 }
localidx :: { LocalIndex }
: u32 { Index $1 }
| ident { Named $1 }
globalidx :: { GlobalIndex }
: u32 { Index $1 }
| ident { Named $1 }
tableidx :: { TableIndex }
: u32 { Index $1 }
| ident { Named $1 }
memidx :: { MemoryIndex }
: u32 { Index $1 }
| ident { Named $1 }
int32 :: { Integer }
: u32 { fromIntegral $1 }
| i32 { $1 }
int64 :: { Integer }
: u32 { fromIntegral $1 }
| i32 { $1 }
| i64 { $1 }
float32 :: { Float }
: u32 { fromIntegral $1 }
| i32 { fromIntegral $1 }
| f32 { $1 }
float64 :: { Double }
: u32 { fromIntegral $1 }
| i32 { fromIntegral $1 }
| f32 { realToFrac $1 }
| f64 { realToFrac $1 }
plaininstr :: { PlainInstr }
-- control instructions
: 'unreachable' { Unreachable }
| 'nop' { Nop }
| 'br' labelidx { Br $2 }
| 'br_if' labelidx { BrIf $2 }
| 'br_table' rev_list1(labelidx) { BrTable (reverse $ tail $2) (head $2) }
| 'return' { Return }
| 'call' funcidx { Call $2 }
-- | 'call_indirect' typeuse { CallIndirect $2 }
-- call_inderict has special case in folded form
-- parametric instructions
| 'drop' { Drop }
| 'select' { Select }
-- variable instructions
| 'get_local' localidx { GetLocal $2 }
| 'set_local' localidx { SetLocal $2 }
| 'tee_local' localidx { TeeLocal $2 }
| 'get_global' globalidx { GetGlobal $2 }
| 'set_global' globalidx { 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 }
| 'current_memory' { CurrentMemory }
| 'grow_memory' { 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.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.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_s/f32' { ITruncFS BS32 BS32 }
| 'i32.trunc_u/f32' { ITruncFU BS32 BS32 }
| 'i32.trunc_s/f64' { ITruncFS BS32 BS64 }
| 'i32.trunc_u/f64' { ITruncFU BS32 BS64 }
| 'i64.extend_s/i32' { I64ExtendSI32 }
| 'i64.extend_u/i32' { I64ExtendUI32 }
| 'i64.trunc_s/f32' { ITruncFS BS64 BS32 }
| 'i64.trunc_u/f32' { ITruncFU BS64 BS32 }
| 'i64.trunc_s/f64' { ITruncFS BS64 BS64 }
| 'i64.trunc_u/f64' { ITruncFU BS64 BS64 }
| 'f32.convert_s/i32' { FConvertIS BS32 BS32 }
| 'f32.convert_u/i32' { FConvertIU BS32 BS32 }
| 'f32.convert_s/i64' { FConvertIS BS32 BS64 }
| 'f32.convert_u/i64' { FConvertIU BS32 BS64 }
| 'f32.demote/f64' { F32DemoteF64 }
| 'f64.convert_s/i32' { FConvertIS BS64 BS32 }
| 'f64.convert_u/i32' { FConvertIU BS64 BS32 }
| 'f64.convert_s/i64' { FConvertIS BS64 BS64 }
| 'f64.convert_u/i64' { 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 :: { TypeUse }
: '(' typeuse1 { $2 }
| {- empty -} { AnonimousTypeUse $ FuncType [] [] }
typeuse1 :: { TypeUse }
: 'type' typeidx ')' typedtypeuse { IndexedTypeUse $2 $4 }
| paramsresultstypeuse { AnonimousTypeUse $1 }
typedtypeuse :: { Maybe FuncType }
: '(' paramsresultstypeuse { Just $2 }
| {- empty -} { Nothing }
typedef :: { TypeDef }
: 'type' opt(ident) functype ')' { TypeDef $2 $3 }
functype :: { FuncType }
: '(' 'func' params_results { $3 }
params_results :: { FuncType }
: ')' { emptyFuncType }
| '(' params_results1 { $2 }
params_results1 :: { FuncType }
: 'param' list(valtype) ')' params_results { mergeFuncType (FuncType (map (ParamType Nothing) $2) []) $4 }
| 'param' ident valtype ')' params_results { mergeFuncType (FuncType [ParamType (Just $2) $3] []) $5 }
| results1 { $1 }
results :: { FuncType }
: ')' { emptyFuncType }
| '(' results1 { $2 }
results1 :: { FuncType }
: 'result' list(valtype) ')' results { mergeFuncType (FuncType [] $2) $4 }
paramsresultstypeuse :: { FuncType }
: paramsresultstypeuse '(' paramsresulttypeuse { mergeFuncType $1 $3 }
| paramsresulttypeuse { $1 }
paramsresulttypeuse :: { FuncType }
: 'param' list(valtype) ')' { FuncType (map (ParamType Nothing) $2) [] }
| 'param' ident valtype ')' { FuncType [ParamType (Just $2) $3] [] }
| 'result' list(valtype) ')' { FuncType [] $2 }
memarg1 :: { MemArg }
: opt(offset) opt(align) { MemArg (fromMaybe 0 $1) (fromMaybe 1 $2) }
memarg2 :: { MemArg }
: opt(offset) opt(align) { MemArg (fromMaybe 0 $1) (fromMaybe 2 $2) }
memarg4 :: { MemArg }
: opt(offset) opt(align) { MemArg (fromMaybe 0 $1) (fromMaybe 4 $2) }
memarg8 :: { MemArg }
: opt(offset) opt(align) { MemArg (fromMaybe 0 $1) (fromMaybe 8 $2) }
instruction :: { [Instruction] }
: raw_instr { $1 }
| foldedinstr { $1 }
raw_instr :: { [Instruction] }
: plaininstr { [PlainInstr $1] }
| 'call_indirect' raw_call_indirect { $2 }
| 'block' opt(ident) raw_block { [$3 $2] }
| 'loop' opt(ident) raw_loop { [$3 $2] }
| 'if' opt(ident) raw_if_result { $3 $2 }
raw_block :: { Maybe Ident -> Instruction }
: 'end' opt(ident) { \ident -> BlockInstr ident [] [] }
| raw_instr list(instruction) 'end' opt(ident) { \ident -> BlockInstr ident [] ($1 ++ concat $2) }
| '(' raw_block1 { $2 }
raw_block1 :: { Maybe Ident -> Instruction }
: 'result' valtype ')' list(instruction) 'end' opt(ident) {
\ident -> BlockInstr ident [$2] (concat $4)
}
| foldedinstr1 list(instruction) 'end' opt(ident) {
\ident -> BlockInstr ident [] ($1 ++ concat $2)
}
raw_loop :: { Maybe Ident -> Instruction }
: 'end' opt(ident) { \ident -> LoopInstr ident [] [] }
| raw_instr list(instruction) 'end' opt(ident) {
\ident -> LoopInstr ident [] ($1 ++ concat $2)
}
| '(' raw_loop1 { $2 }
raw_loop1 :: { Maybe Ident -> Instruction }
: 'result' valtype ')' list(instruction) 'end' opt(ident) {
\ident -> LoopInstr ident [$2] (concat $4)
}
| foldedinstr1 list(instruction) 'end' opt(ident) {
\ident -> LoopInstr ident [] ($1 ++ concat $2)
}
raw_if_result :: { Maybe Ident -> [Instruction] }
: raw_else { \ident -> [IfInstr ident [] [] $1] }
| raw_instr list(instruction) raw_else {
\ident -> [IfInstr ident [] ($1 ++ concat $2) $3]
}
| '(' raw_if_result1 { $2 }
raw_if_result1 :: { Maybe Ident -> [Instruction] }
: 'result' valtype ')' list(instruction) raw_else {
\ident -> [IfInstr ident [$2] (concat $4) $5]
}
| foldedinstr1 list(instruction) raw_else {
\ident -> [IfInstr ident [] ($1 ++ concat $2) $3]
}
raw_else :: { [Instruction] }
: 'end' opt(ident) { [] }
| 'else' opt(ident) list(instruction) 'end' opt(ident) { concat $3 }
raw_call_indirect :: { [Instruction] }
: '(' raw_call_indirect_typeuse { (PlainInstr $ CallIndirect $ fst $2) : snd $2 }
| {- empty -} { [PlainInstr $ CallIndirect $ AnonimousTypeUse $ FuncType [] []] }
raw_call_indirect_typeuse :: { (TypeUse, [Instruction]) }
: 'type' typeidx ')' raw_call_indirect_functype {
(IndexedTypeUse $2 $ fst $4, snd $4)
}
| raw_call_indirect_functype1 {
(AnonimousTypeUse $ fromMaybe (FuncType [] []) $ fst $1, snd $1)
}
raw_call_indirect_functype :: { (Maybe FuncType, [Instruction]) }
: '(' raw_call_indirect_functype1 { $2 }
| {- empty -} { (Nothing, []) }
raw_call_indirect_functype1 :: { (Maybe FuncType, [Instruction]) }
: 'param' list(valtype) ')' raw_call_indirect_functype {
let ft = fromMaybe emptyFuncType $ fst $4 in
(Just $ ft { params = map (ParamType Nothing) $2 ++ params ft }, snd $4)
}
| 'param' ident valtype ')' raw_call_indirect_functype {
let ft = fromMaybe emptyFuncType $ fst $5 in
(Just $ ft { params = (ParamType (Just $2) $3) : params ft }, snd $5)
}
| raw_call_indirect_return_functype1 { $1 }
raw_call_indirect_return_functype :: { (Maybe FuncType, [Instruction]) }
: '(' raw_call_indirect_return_functype1 { $2 }
| {- empty -} { (Nothing, []) }
raw_call_indirect_return_functype1 :: { (Maybe FuncType, [Instruction]) }
: 'result' list(valtype) ')' raw_call_indirect_return_functype {
let ft = fromMaybe emptyFuncType $ fst $4 in
(Just $ ft { results = $2 ++ results ft }, snd $4)
}
| foldedinstr1 { (Nothing, $1) }
foldedinstr :: { [Instruction] }
: '(' foldedinstr1 { $2 }
foldedinstr1 :: { [Instruction] }
: plaininstr list(foldedinstr) ')' { concat $2 ++ [PlainInstr $1] }
| 'call_indirect' folded_call_indirect { $2 }
| 'block' opt(ident) folded_block { [$3 $2] }
| 'loop' opt(ident) folded_loop { [$3 $2] }
| 'if' opt(ident) '(' folded_if_result { $4 $2 }
folded_block :: { Maybe Ident -> Instruction }
: ')' { \ident -> BlockInstr ident [] [] }
| '(' folded_block1 { $2 }
folded_block1 :: { Maybe Ident -> Instruction }
: 'result' valtype ')' list(foldedinstr) ')' { \ident -> BlockInstr ident [$2] (concat $4) }
| foldedinstr1 list(foldedinstr) ')' { \ident -> BlockInstr ident [] ($1 ++ concat $2) }
folded_loop :: { Maybe Ident -> Instruction }
: ')' { \ident -> LoopInstr ident [] [] }
| '(' folded_loop1 { $2 }
folded_loop1 :: { Maybe Ident -> Instruction }
: 'result' valtype ')' list(foldedinstr) ')' { \ident -> LoopInstr ident [$2] (concat $4) }
| foldedinstr1 list(foldedinstr) ')' { \ident -> LoopInstr ident [] ($1 ++ concat $2) }
folded_if_result :: { Maybe Ident -> [Instruction] }
: 'result' valtype ')' '(' folded_then_else {
\ident -> [IfInstr ident [$2] (fst $5) (snd $5)]
}
| 'result' valtype ')' '(' foldedinstr1 '(' folded_then_else {
\ident -> $5 ++ [IfInstr ident [$2] (fst $7) (snd $7)]
}
| folded_if { $1 }
folded_if :: { Maybe Ident -> [Instruction] }
: folded_then_else { \ident -> [IfInstr ident [] (fst $1) (snd $1)] }
| foldedinstr1 '(' folded_then_else { \ident -> $1 ++ [IfInstr ident [] (fst $3) (snd $3)] }
folded_then_else :: { ([Instruction], [Instruction]) }
: 'then' list(foldedinstr) ')' folded_else { (concat $2, $4)}
folded_else :: { [Instruction] }
: ')' { [] }
| '(' 'else' list(foldedinstr) ')' ')' { concat $3 }
folded_call_indirect :: { [Instruction] }
: ')' { [PlainInstr $ CallIndirect $ AnonimousTypeUse $ FuncType [] []] }
| '(' folded_call_indirect_typeuse { snd $2 ++ [PlainInstr $ CallIndirect $ fst $2] }
folded_call_indirect_typeuse :: { (TypeUse, [Instruction]) }
: 'type' typeidx ')' folded_call_indirect_functype {
(IndexedTypeUse $2 $ fst $4, snd $4)
}
| folded_call_indirect_functype1 {
(AnonimousTypeUse $ fromMaybe (FuncType [] []) $ fst $1, snd $1)
}
folded_call_indirect_functype :: { (Maybe FuncType, [Instruction]) }
: '(' folded_call_indirect_functype1 { $2 }
| ')' { (Nothing, []) }
folded_call_indirect_functype1 :: { (Maybe FuncType, [Instruction]) }
: paramsresulttypeuse folded_call_indirect_functype {
(Just $ mergeFuncType $1 $ fromMaybe emptyFuncType $ fst $2, snd $2)
}
| foldedinstr1 list(foldedinstr) ')' { (Nothing, $1 ++ concat $2) }
importdesc :: { ImportDesc }
: 'func' opt(ident) typeuse ')' { ImportFunc $2 $3 }
| '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 { $3 $2 }
export_import_typeuse_locals_body :: { Maybe Ident -> [ModuleField] }
: ')' { \i -> [MFFunc $ emptyFunction { ident = i }] }
| raw_instr list(instruction) ')' {
\i -> [MFFunc $ emptyFunction { ident = i, body = $1 ++ concat $2 }]
}
| '(' export_import_typeuse_locals_body1 { $2 }
export_import_typeuse_locals_body1 :: { Maybe Ident -> [ModuleField] }
: 'export' name ')' export_import_typeuse_locals_body {
\ident -> (MFExport $ Export $2 $ ExportFunc (Named `fmap` ident)) : ($4 ident)
}
| import_typeuse_locals_body1 { \ident -> [$1 ident] }
import_typeuse_locals_body1 :: { Maybe Ident -> ModuleField }
: 'import' name name ')' typeuse ')' {
\ident -> MFImport $ Import $2 $3 $ ImportFunc ident $5
}
| typeuse_locals_body1 { MFFunc . $1 }
typeuse_locals_body1 :: { Maybe Ident -> Function }
: 'type' typeidx ')' signature_locals_body {
\i ->
let (AnonimousTypeUse signature) = funcType $4 in
let typeSign = if signature == emptyFuncType then Nothing else Just signature in
$4 { funcType = IndexedTypeUse $2 typeSign, ident = i }
}
| signature_locals_body1 { \i -> $1 { ident = i } }
signature_locals_body :: { Function }
: ')' { emptyFunction }
| '(' signature_locals_body1 { $2 }
signature_locals_body1 :: { Function }
: 'param' list(valtype) ')' signature_locals_body {
prependFuncParams (map (ParamType Nothing) $2) $4
}
| 'param' ident valtype ')' signature_locals_body {
prependFuncParams [ParamType (Just $2) $3] $5
}
| result_locals_body1 { $1 }
result_locals_body :: { Function }
: ')' { emptyFunction }
| '(' result_locals_body1 { $2 }
result_locals_body1 :: { Function }
: 'result' list(valtype) ')' result_locals_body {
prependFuncResults $2 $4
}
| locals_body1 {
emptyFunction { locals = fst $1, body = snd $1 }
}
locals_body :: { ([LocalType], [Instruction]) }
: ')' { ([], []) }
| raw_instr list(instruction) ')' { ([], $1 ++ concat $2)}
| '(' locals_body1 { $2 }
locals_body1 :: { ([LocalType], [Instruction]) }
: 'local' list(valtype) ')' locals_body { (map (LocalType Nothing) $2 ++ fst $4, snd $4) }
| 'local' ident valtype ')' locals_body { (LocalType (Just $2) $3 : fst $5, snd $5) }
| foldedinstr1 list(instruction) ')' { ([], $1 ++ concat $2) }
-- 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 list(instruction) ')' { \ident -> [MFGlobal $ Global ident (Const $1) $ concat $2] }
| '(' global_mut_export_import { $2 }
global_mut_export_import :: { Maybe Ident -> [ModuleField] }
: 'mut' valtype ')' list(instruction) ')' { \ident -> [MFGlobal $ Global ident (Mut $2) $ concat $4] }
| 'export' name ')' global_type_export_import {
\ident -> (MFExport $ Export $2 $ ExportGlobal $ Named `fmap` ident) : ($4 ident)
}
| '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 }
memory_limits_export_import1 :: { Maybe Ident -> [ModuleField] }
: 'export' name ')' memory_limits_export_import {
\ident -> (MFExport $ Export $2 $ ExportMemory $ Named `fmap` ident) : $4 ident
}
| 'import' name name ')' limits ')' {
\ident -> [MFImport $ Import $2 $3 $ ImportMemory ident $5]
}
| 'data' string ')' ')' {
\ident ->
let m = fromIntegral $ TL.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 }
: 'anyfunc' { AnyFunc }
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(funcidx) ')' ')' {
\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 -> (MFExport $ Export $2 $ ExportTable $ Named `fmap` ident) : ($4 ident)
}
-- TABLE END --
exportdesc :: { ExportDesc }
: 'func' funcidx ')' { ExportFunc (Just $2) }
| 'table' tableidx ')' { ExportTable (Just $2) }
| 'memory' memidx ')' { ExportMemory (Just $2) }
| 'global' globalidx ')' { ExportGlobal (Just $2) }
export :: { Export }
: 'export' name '(' exportdesc ')' { Export $2 $4 }
start :: { StartFunction }
: 'start' funcidx ')' { 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' foldedinstr ')' { $2 }
| foldedinstr1 { $1 }
elemsegment :: { ElemSegment }
: 'elem' opt(tableidx) '(' offsetexpr list(funcidx) ')' { ElemSegment (fromMaybe (Index 0) $2) $4 $5 }
datasegment :: { DataSegment }
: 'data' opt(memidx) '(' offsetexpr list(string) ')' { DataSegment (fromMaybe (Index 0) $2) $4 (TL.concat $5) }
modulefield1_single :: { ModuleField }
: typedef { MFType $1 }
| import { MFImport $1 }
| export { MFExport $1 }
| start { MFStart $1 }
| elemsegment { MFElem $1 }
| datasegment { MFData $1 }
modulefield1_multi :: { [ModuleField] }
: function { $1 }
| table { $1 }
| memory { $1 }
| global { $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 }
-- 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)
asUInt32 :: Integer -> Maybe Natural
asUInt32 val
| val >= 0, val < 2 ^ 32 = Just $ fromIntegral val
| otherwise = Nothing
asInt32 :: Integer -> Maybe Integer
asInt32 val
| val >= -2 ^ 31, val < 2 ^ 32 = Just $ fromIntegral val
| otherwise = Nothing
asInt64 :: Integer -> Maybe Integer
asInt64 val
| val >= -2 ^ 63, val < 2 ^ 64 = Just $ fromIntegral val
| otherwise = Nothing
asFloat32 :: Double -> Float
asFloat32 = realToFrac
asFloat64 :: Double -> Double
asFloat64 = id
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)
-- TODO: check name conditions.
-- Presuming the source text is itself encoded correctly,
-- strings that do not contain any uses of hexadecimal byte escapes are always valid names.
asName :: LBS.ByteString -> Maybe TL.Text
asName = Just . TLEncoding.decodeUtf8
asString :: LBS.ByteString -> Maybe TL.Text
asString = Just . TLEncoding.decodeUtf8
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) = 0x80000000 .|. (fromIntegral (abs i))
| otherwise = error "I32 is out of bounds."
integerToWord64 :: Integer -> Word64
integerToWord64 i
| i >= 0 && i <= 2 ^ 64 = fromIntegral i
| i < 0 && i >= -(2 ^ 63) = 0x8000000000000000 .|. (fromIntegral (abs i))
| otherwise = error "I64 is out of bounds."
data FuncType = FuncType { params :: [ParamType], results :: [ValueType] } deriving (Show, Eq)
emptyFuncType :: FuncType
emptyFuncType = FuncType [] []
data ParamType = ParamType {
ident :: Maybe Ident,
paramType :: ValueType
} deriving (Show, Eq)
newtype Ident = Ident T.Text deriving (Show, Eq)
data Index = Named Ident | Index Natural deriving (Show, Eq)
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
| 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)
data TypeDef = TypeDef (Maybe Ident) FuncType deriving (Show, Eq)
data TypeUse =
IndexedTypeUse TypeIndex (Maybe FuncType)
| AnonimousTypeUse FuncType
deriving (Show, Eq)
data Instruction =
PlainInstr PlainInstr
| BlockInstr {
label :: Maybe Ident,
resultType :: [ValueType],
body :: [Instruction]
}
| LoopInstr {
label :: Maybe Ident,
resultType :: [ValueType],
body :: [Instruction]
}
| IfInstr {
label :: Maybe Ident,
resultType :: [ValueType],
trueBranch :: [Instruction],
falseBranch :: [Instruction]
}
deriving (Show, Eq)
data Import = Import {
sourceModule :: TL.Text,
name :: TL.Text,
desc :: ImportDesc
} deriving (Show, Eq)
data ImportDesc =
ImportFunc (Maybe Ident) TypeUse
| ImportTable (Maybe Ident) TableType
| ImportMemory (Maybe Ident) Limit
| ImportGlobal (Maybe Ident) GlobalType
deriving (Show, Eq)
data LocalType = LocalType {
ident :: Maybe Ident,
localType :: ValueType
} deriving (Show, Eq)
data Function = Function {
ident :: Maybe Ident,
funcType :: TypeUse,
locals :: [LocalType],
body :: [Instruction]
}
deriving (Show, Eq)
emptyFunction :: Function
emptyFunction =
Function {
ident = Nothing,
funcType = AnonimousTypeUse emptyFuncType,
locals = [],
body = []
}
data Global = Global {
ident :: Maybe Ident,
globalType :: GlobalType,
initializer :: [Instruction]
}
deriving (Show, Eq)
data Memory = Memory (Maybe Ident) Limit deriving (Show, Eq)
data Table = Table (Maybe Ident) TableType deriving (Show, Eq)
data ExportDesc =
ExportFunc (Maybe FuncIndex)
| ExportTable (Maybe TableIndex)
| ExportMemory (Maybe MemoryIndex)
| ExportGlobal (Maybe GlobalIndex)
deriving (Show, Eq)
data Export = Export {
name :: TL.Text,
desc :: ExportDesc
}
deriving (Show, Eq)
data StartFunction = StartFunction FuncIndex deriving (Show, Eq)
data ElemSegment = ElemSegment {
tableIndex :: TableIndex,
offset :: [Instruction],
funcIndexes :: [FuncIndex]
}
deriving (Show, Eq)
data DataSegment = DataSegment {
memIndex :: MemoryIndex,
offset :: [Instruction],
datastring :: TL.Text
}
deriving (Show, Eq)
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)
happyError (Lexeme _ EOF : []) = error $ "Error occuried during parsing phase at the end of file"
happyError (Lexeme (AlexPn abs line col) tok : tokens) = error $
"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 Labels = [Maybe Ident]
data FunCtx = FunCtx {
ctxMod :: Module,
ctxLabels :: Labels,
ctxLocals :: [LocalType],
ctxParams :: [ParamType]
} deriving (Eq, Show)
desugarize :: [ModuleField] -> S.Module
desugarize fields =
let mod = Module {
types = extract extractTypeDef 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 = []
} in
S.Module {
S.types = map synTypeDefToStruct $ types mod,
S.functions = map (synFunctionToStruct mod) $ functions mod,
S.tables = map synTableToStruct $ tables mod,
S.imports = map (synImportToStruct $ types mod) $ imports mod,
S.elems = map (synElemToStruct mod) $ elems mod,
S.datas = map (synDataToStruct mod) $ datas mod,
S.mems = map synMemoryToStruct $ mems mod,
S.globals = map (synGlobalToStruct mod) $ globals mod,
S.start = fmap (synStartToStruct mod) $ start mod,
S.exports = synExportsToStruct 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
extractTypeDef :: [TypeDef] -> ModuleField -> [TypeDef]
extractTypeDef defs (MFType def) = def : 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 }) =
extractTypeDefFromInstructions defs body
extractTypeDefFromInstruction defs (LoopInstr { body }) =
extractTypeDefFromInstructions defs body
extractTypeDefFromInstruction defs (IfInstr { trueBranch, falseBranch }) =
extractTypeDefFromInstructions defs $ 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
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
guard $ length defs > fromIntegral n
guard $ matchTypeFunc funcType $ defs !! fromIntegral n
return n
getTypeIndex defs (IndexedTypeUse (Index n) Nothing) = do
guard $ length defs > fromIntegral n
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
-- functions
synInstrToStruct :: FunCtx -> Instruction -> S.Instruction
synInstrToStruct _ (PlainInstr Unreachable) = S.Unreachable
synInstrToStruct _ (PlainInstr Nop) = S.Nop
synInstrToStruct ctx (PlainInstr (Br labelIdx)) =
fromJust $ S.Br <$> getLabelIdx ctx labelIdx
synInstrToStruct ctx (PlainInstr (BrIf labelIdx)) =
fromJust $ S.BrIf <$> getLabelIdx ctx labelIdx
synInstrToStruct ctx (PlainInstr (BrTable lbls lbl)) =
S.BrTable (map (fromJust . getLabelIdx ctx) lbls) $ fromJust $ getLabelIdx ctx lbl
synInstrToStruct _ (PlainInstr Return) = S.Return
synInstrToStruct FunCtx { ctxMod } (PlainInstr (Call funIdx)) =
S.Call $ fromJust $ getFuncIndex ctxMod funIdx
synInstrToStruct FunCtx { ctxMod = Module { types } } (PlainInstr (CallIndirect typeUse)) =
fromJust $ S.CallIndirect <$> getTypeIndex types typeUse
synInstrToStruct _ (PlainInstr Drop) = S.Drop
synInstrToStruct _ (PlainInstr Select) = S.Select
synInstrToStruct ctx (PlainInstr (GetLocal localIdx)) =
S.GetLocal $ fromJust $ getLocalIndex ctx localIdx
synInstrToStruct ctx (PlainInstr (SetLocal localIdx)) =
S.SetLocal $ fromJust $ getLocalIndex ctx localIdx
synInstrToStruct ctx (PlainInstr (TeeLocal localIdx)) =
S.TeeLocal $ fromJust $ getLocalIndex ctx localIdx
synInstrToStruct FunCtx { ctxMod } (PlainInstr (GetGlobal globalIdx)) =
S.GetGlobal $ fromJust $ getGlobalIndex ctxMod globalIdx
synInstrToStruct FunCtx { ctxMod } (PlainInstr (SetGlobal globalIdx)) =
S.SetGlobal $ fromJust $ getGlobalIndex ctxMod globalIdx
synInstrToStruct _ (PlainInstr (I32Load memArg)) = S.I32Load memArg
synInstrToStruct _ (PlainInstr (I64Load memArg)) = S.I64Load memArg
synInstrToStruct _ (PlainInstr (F32Load memArg)) = S.F32Load memArg
synInstrToStruct _ (PlainInstr (F64Load memArg)) = S.F64Load memArg
synInstrToStruct _ (PlainInstr (I32Load8S memArg)) = S.I32Load8S memArg
synInstrToStruct _ (PlainInstr (I32Load8U memArg)) = S.I32Load8U memArg
synInstrToStruct _ (PlainInstr (I32Load16S memArg)) = S.I32Load16S memArg
synInstrToStruct _ (PlainInstr (I32Load16U memArg)) = S.I32Load16U memArg
synInstrToStruct _ (PlainInstr (I64Load8S memArg)) = S.I64Load8S memArg
synInstrToStruct _ (PlainInstr (I64Load8U memArg)) = S.I64Load8U memArg
synInstrToStruct _ (PlainInstr (I64Load16S memArg)) = S.I64Load16S memArg
synInstrToStruct _ (PlainInstr (I64Load16U memArg)) = S.I64Load16U memArg
synInstrToStruct _ (PlainInstr (I64Load32S memArg)) = S.I64Load32S memArg
synInstrToStruct _ (PlainInstr (I64Load32U memArg)) = S.I64Load32U memArg
synInstrToStruct _ (PlainInstr (I32Store memArg)) = S.I32Store memArg
synInstrToStruct _ (PlainInstr (I64Store memArg)) = S.I64Store memArg
synInstrToStruct _ (PlainInstr (F32Store memArg)) = S.F32Store memArg
synInstrToStruct _ (PlainInstr (F64Store memArg)) = S.F64Store memArg
synInstrToStruct _ (PlainInstr (I32Store8 memArg)) = S.I32Store8 memArg
synInstrToStruct _ (PlainInstr (I32Store16 memArg)) = S.I32Store16 memArg
synInstrToStruct _ (PlainInstr (I64Store8 memArg)) = S.I64Store8 memArg
synInstrToStruct _ (PlainInstr (I64Store16 memArg)) = S.I64Store16 memArg
synInstrToStruct _ (PlainInstr (I64Store32 memArg)) = S.I64Store32 memArg
synInstrToStruct _ (PlainInstr CurrentMemory) = S.CurrentMemory
synInstrToStruct _ (PlainInstr GrowMemory) = S.GrowMemory
synInstrToStruct _ (PlainInstr (I32Const val)) = S.I32Const $ integerToWord32 val
synInstrToStruct _ (PlainInstr (I64Const val)) = S.I64Const $ integerToWord64 val
synInstrToStruct _ (PlainInstr (F32Const val)) = S.F32Const val
synInstrToStruct _ (PlainInstr (F64Const val)) = S.F64Const val
synInstrToStruct _ (PlainInstr (IUnOp sz op)) = S.IUnOp sz op
synInstrToStruct _ (PlainInstr (IBinOp sz op)) = S.IBinOp sz op
synInstrToStruct _ (PlainInstr I32Eqz) = S.I32Eqz
synInstrToStruct _ (PlainInstr I64Eqz) = S.I64Eqz
synInstrToStruct _ (PlainInstr (IRelOp sz op)) = S.IRelOp sz op
synInstrToStruct _ (PlainInstr (FUnOp sz op)) = S.FUnOp sz op
synInstrToStruct _ (PlainInstr (FBinOp sz op)) = S.FBinOp sz op
synInstrToStruct _ (PlainInstr (FRelOp sz op)) = S.FRelOp sz op
synInstrToStruct _ (PlainInstr I32WrapI64) = S.I32WrapI64
synInstrToStruct _ (PlainInstr (ITruncFU sz sz')) = S.ITruncFU sz sz'
synInstrToStruct _ (PlainInstr (ITruncFS sz sz')) = S.ITruncFS sz sz'
synInstrToStruct _ (PlainInstr I64ExtendSI32) = S.I64ExtendSI32
synInstrToStruct _ (PlainInstr I64ExtendUI32) = S.I64ExtendUI32
synInstrToStruct _ (PlainInstr (FConvertIU sz sz')) = S.FConvertIU sz sz'
synInstrToStruct _ (PlainInstr (FConvertIS sz sz')) = S.FConvertIS sz sz'
synInstrToStruct _ (PlainInstr F32DemoteF64) = S.F32DemoteF64
synInstrToStruct _ (PlainInstr F64PromoteF32) = S.F64PromoteF32
synInstrToStruct _ (PlainInstr (IReinterpretF sz)) = S.IReinterpretF sz
synInstrToStruct _ (PlainInstr (FReinterpretI sz)) = S.FReinterpretI sz
synInstrToStruct ctx BlockInstr {label, resultType, body} =
let ctx' = ctx { ctxLabels = label : ctxLabels ctx } in
S.Block resultType $ map (synInstrToStruct ctx') body
synInstrToStruct ctx LoopInstr {label, resultType, body} =
let ctx' = ctx { ctxLabels = label : ctxLabels ctx } in
S.Loop resultType $ map (synInstrToStruct ctx') body
synInstrToStruct ctx IfInstr {label, resultType, trueBranch, falseBranch} =
let ctx' = ctx { ctxLabels = label : ctxLabels ctx } in
let trueBranch' = map (synInstrToStruct ctx') trueBranch in
let falseBranch' = map (synInstrToStruct ctx') falseBranch in
S.If resultType trueBranch' falseBranch'
synFunctionToStruct :: Module -> Function -> S.Function
synFunctionToStruct mod Function { funcType, locals, body } =
let typeIdx = fromJust $ getTypeIndex (types mod) funcType in
-- 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
_ ->
let TypeDef _ FuncType { params } = types mod !! fromIntegral typeIdx in
params
in
let ctx = FunCtx mod [] locals params in
S.Function {
S.funcType = typeIdx,
S.localTypes = map localType locals,
S.body = map (synInstrToStruct ctx) body
}
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) =
if (length ctxParams + length ctxLocals > fromIntegral idx)
then Just idx
else Nothing
isFuncImport :: Import -> Bool
isFuncImport Import { desc = ImportFunc _ _ } = True
isFuncImport _ = False
getFuncIndex :: Module -> FuncIndex -> Maybe Natural
getFuncIndex Module { imports, functions } (Named id) =
let funImports = filter isFuncImport imports in
case findIndex (\(Import { desc = ImportFunc ident _ }) -> ident == Just id) funImports of
Just idx -> return $ fromIntegral idx
Nothing ->
let isIdent (Function { ident }) = ident == Just id in
fromIntegral . (+ length funImports) <$> findIndex isIdent functions
getFuncIndex Module { imports, functions } (Index idx) =
let funImports = filter isFuncImport imports in
if length funImports + length functions > fromIntegral idx
then Just idx
else Nothing
-- tables
synTableToStruct :: Table -> S.Table
synTableToStruct (Table _ tableType) = S.Table tableType
extractTable :: [Table] -> ModuleField -> [Table]
extractTable tables (MFTable table) = table : tables
extractTable tables _ = tables
isTableImport :: Import -> Bool
isTableImport Import { desc = ImportTable _ _ } = True
isTableImport _ = False
getTableIndex :: Module -> TableIndex -> Maybe Natural
getTableIndex Module { imports, tables } (Named id) =
let tableImports = filter isTableImport imports in
case findIndex (\(Import { desc = ImportTable ident _ }) -> ident == Just id) tableImports of
Just idx -> return $ fromIntegral idx
Nothing ->
let isIdent (Table (Just id) _) = True in
fromIntegral . (+ length tableImports) <$> findIndex isIdent tables
getTableIndex Module { imports, tables } (Index idx) =
let tableImports = filter isTableImport imports in
if length tableImports + length tables > fromIntegral idx
then Just idx
else Nothing
-- memory
synMemoryToStruct :: Memory -> S.Memory
synMemoryToStruct (Memory _ limits) = S.Memory limits
extractMemory :: [Memory] -> ModuleField -> [Memory]
extractMemory mems (MFMem mem) = mem : mems
extractMemory mems _ = mems
isMemImport :: Import -> Bool
isMemImport Import { desc = ImportMemory _ _ } = True
isMemImport _ = False
getMemIndex :: Module -> MemoryIndex -> Maybe Natural
getMemIndex Module { imports, mems } (Named id) =
let memImports = filter isMemImport imports in
case findIndex (\(Import { desc = ImportMemory ident _ }) -> ident == Just id) memImports of
Just idx -> return $ fromIntegral idx
Nothing ->
let isIdent (Memory (Just id) _) = True in
fromIntegral . (+ length memImports) <$> findIndex isIdent mems
getMemIndex Module { imports, mems } (Index idx) =
let memImports = filter isMemImport imports in
if length memImports + length mems > fromIntegral idx
then Just idx
else Nothing
-- global
synGlobalToStruct :: Module -> Global -> S.Global
synGlobalToStruct mod Global { globalType, initializer } =
let ctx = FunCtx mod [] [] [] in
S.Global globalType $ map (synInstrToStruct ctx) initializer
extractGlobal :: [Global] -> ModuleField -> [Global]
extractGlobal globals (MFGlobal global) = global : globals
extractGlobal globals _ = globals
isGlobalImport :: Import -> Bool
isGlobalImport Import { desc = ImportGlobal _ _ } = True
isGlobalImport _ = False
getGlobalIndex :: Module -> GlobalIndex -> Maybe Natural
getGlobalIndex Module { imports, globals } (Named id) =
let globalImports = filter isGlobalImport imports in
case findIndex (\(Import { desc = ImportGlobal ident _ }) -> ident == Just id) globalImports of
Just idx -> return $ fromIntegral idx
Nothing ->
let isIdent (Global { ident }) = ident == Just id in
fromIntegral . (+ length globalImports) <$> findIndex isIdent globals
getGlobalIndex Module { imports, globals } (Index idx) =
let globalImports = filter isGlobalImport imports in
if length globalImports + length globals > fromIntegral idx
then Just idx
else Nothing
-- elem segment
synElemToStruct :: Module -> ElemSegment -> S.ElemSegment
synElemToStruct mod ElemSegment { tableIndex, offset, funcIndexes } =
let ctx = FunCtx mod [] [] [] in
let offsetInstrs = map (synInstrToStruct ctx) offset in
let idx = fromJust $ getTableIndex mod tableIndex in
let indexes = map (fromJust . getFuncIndex mod) funcIndexes in
S.ElemSegment idx offsetInstrs indexes
extractElemSegment :: [ElemSegment] -> ModuleField -> [ElemSegment]
extractElemSegment elems (MFElem elem) = elem : elems
extractElemSegment elems _ = elems
-- data segment
synDataToStruct :: Module -> DataSegment -> S.DataSegment
synDataToStruct mod DataSegment { memIndex, offset, datastring } =
let ctx = FunCtx mod [] [] [] in
let offsetInstrs = map (synInstrToStruct ctx) offset in
let idx = fromJust $ getMemIndex mod memIndex in
S.DataSegment idx offsetInstrs $ TLEncoding.encodeUtf8 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
synExportsToStruct :: Module -> [ModuleField] -> [S.Export]
synExportsToStruct mod (MFExport Export { name, desc = ExportFunc Nothing } : rest) =
let
isFuncExport (MFExport Export { desc = ExportFunc Nothing }) = True
isFuncExport _ = False
in
let getName (MFExport Export { name }) = name in
let names = name : (map getName $ takeWhile isFuncExport rest) in
let funImports = filter isFuncImport $ imports mod in
let rest' = dropWhile isFuncExport rest in
let
idx = fromIntegral $ case head rest' of
MFImport imp -> fromJust $ findIndex (== imp) funImports
MFFunc fun -> length funImports + (fromJust $ findIndex (== fun) $ functions mod)
_ -> error "export statement without index has to be followed with import or function"
in
map (\name -> S.Export name $ S.ExportFunc idx) names ++ synExportsToStruct mod rest'
synExportsToStruct mod (MFExport Export { name, desc = ExportFunc (Just 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 Nothing } : rest) =
let
isTableExport (MFExport Export { desc = ExportTable Nothing }) = True
isTableExport _ = False
in
let getName (MFExport Export { name }) = name in
let names = name : (map getName $ takeWhile isTableExport rest) in
let tableImports = filter isTableImport $ imports mod in
let rest' = dropWhile isTableExport rest in
let
idx = fromIntegral $ case head rest' of
MFImport imp -> fromJust $ findIndex (== imp) tableImports
MFTable tab -> length tableImports + (fromJust $ findIndex (== tab) $ tables mod)
_ -> error "export statement without index has to be followed with import or table"
in
map (\name -> S.Export name $ S.ExportTable idx) names ++ synExportsToStruct mod rest'
synExportsToStruct mod (MFExport Export { name, desc = ExportTable (Just 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 Nothing } : rest) =
let
isMemExport (MFExport Export { desc = ExportMemory Nothing }) = True
isMemExport _ = False
in
let getName (MFExport Export { name }) = name in
let names = name : (map getName $ takeWhile isMemExport rest) in
let memImports = filter isMemImport $ imports mod in
let rest' = dropWhile isMemExport rest in
let
idx = fromIntegral $ case head rest' of
MFImport imp -> fromJust $ findIndex (== imp) memImports
MFMem mem -> length memImports + (fromJust $ findIndex (== mem) $ mems mod)
_ -> error "export statement without index has to be followed with import or memory"
in
map (\name -> S.Export name $ S.ExportMemory idx) names ++ synExportsToStruct mod rest'
synExportsToStruct mod (MFExport Export { name, desc = ExportMemory (Just 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 Nothing } : rest) =
let
isGlobalExport (MFExport Export { desc = ExportGlobal Nothing }) = True
isGlobalExport _ = False
in
let getName (MFExport Export { name }) = name in
let names = name : (map getName $ takeWhile isGlobalExport rest) in
let globalImports = filter isGlobalImport $ imports mod in
let rest' = dropWhile isGlobalExport rest in
let
idx = fromIntegral $ case head rest' of
MFImport imp -> fromJust $ findIndex (== imp) globalImports
MFGlobal global -> length globalImports + (fromJust $ findIndex (== global) $ globals mod)
_ -> error "export statement without index has to be followed with import or memory"
in
map (\name -> S.Export name $ S.ExportGlobal idx) names ++ synExportsToStruct mod rest'
synExportsToStruct mod (MFExport Export { name, desc = ExportGlobal (Just 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 _ [] = []
}
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