| /* |
| * Copyright 2023 WebAssembly Community Group participants |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef parser_parsers_h |
| #define parser_parsers_h |
| |
| #include "common.h" |
| #include "contexts.h" |
| #include "lexer.h" |
| #include "wat-parser-internal.h" |
| |
| namespace wasm::WATParser { |
| |
| using namespace std::string_view_literals; |
| |
| // Types |
| template<typename Ctx> |
| Result<typename Ctx::HeapTypeT> absheaptype(Ctx&, Shareability); |
| template<typename Ctx> Result<typename Ctx::HeapTypeT> heaptype(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::RefTypeT> maybeReftype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::RefTypeT> reftype(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::TypeT> tupletype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::TypeT> valtype(Ctx&); |
| template<typename Ctx> |
| MaybeResult<typename Ctx::ParamsT> params(Ctx&, bool allowNames = true); |
| template<typename Ctx> MaybeResult<typename Ctx::ResultsT> results(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::SignatureT> functype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::FieldT> storagetype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::FieldT> fieldtype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::FieldsT> fields(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::StructT> structtype(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::ArrayT> arraytype(Ctx&); |
| template<typename Ctx> Result<typename Ctx::LimitsT> limits32(Ctx&); |
| template<typename Ctx> Result<typename Ctx::LimitsT> limits64(Ctx&); |
| template<typename Ctx> Result<typename Ctx::MemTypeT> memtype(Ctx&); |
| template<typename Ctx> |
| Result<typename Ctx::MemTypeT> memtypeContinued(Ctx&, Type addressType); |
| template<typename Ctx> Result<MemoryOrder> memorder(Ctx&); |
| template<typename Ctx> Result<typename Ctx::TableTypeT> tabletype(Ctx&); |
| template<typename Ctx> |
| Result<typename Ctx::TableTypeT> tabletypeContinued(Ctx&, Type addressType); |
| template<typename Ctx> Result<typename Ctx::GlobalTypeT> globaltype(Ctx&); |
| template<typename Ctx> Result<uint32_t> tupleArity(Ctx&); |
| |
| // Instructions |
| template<typename Ctx> |
| MaybeResult<> foldedBlockinstr(Ctx&, const std::vector<Annotation>&); |
| template<typename Ctx> |
| MaybeResult<> unfoldedBlockinstr(Ctx&, const std::vector<Annotation>&); |
| template<typename Ctx> |
| MaybeResult<> blockinstr(Ctx&, const std::vector<Annotation>&); |
| template<typename Ctx> |
| MaybeResult<> plaininstr(Ctx&, const std::vector<Annotation>&); |
| template<typename Ctx> MaybeResult<> instr(Ctx&); |
| template<typename Ctx> MaybeResult<> foldedinstr(Ctx&); |
| template<typename Ctx> Result<> instrs(Ctx&); |
| template<typename Ctx> Result<> foldedinstrs(Ctx&); |
| template<typename Ctx> Result<typename Ctx::ExprT> expr(Ctx&); |
| template<typename Ctx> Result<typename Ctx::MemargT> memarg(Ctx&, uint32_t); |
| template<typename Ctx> Result<typename Ctx::BlockTypeT> blocktype(Ctx&); |
| template<typename Ctx> |
| MaybeResult<> block(Ctx&, const std::vector<Annotation>&, bool); |
| template<typename Ctx> |
| MaybeResult<> ifelse(Ctx&, const std::vector<Annotation>&, bool); |
| template<typename Ctx> |
| MaybeResult<> loop(Ctx&, const std::vector<Annotation>&, bool); |
| template<typename Ctx> |
| MaybeResult<> trycatch(Ctx&, const std::vector<Annotation>&, bool); |
| template<typename Ctx> MaybeResult<typename Ctx::CatchT> catchinstr(Ctx&); |
| template<typename Ctx> |
| MaybeResult<> trytable(Ctx&, const std::vector<Annotation>&, bool); |
| template<typename Ctx> |
| Result<> makeUnreachable(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeNop(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeBinary(Ctx&, Index, const std::vector<Annotation>&, BinaryOp op); |
| template<typename Ctx> |
| Result<> makeUnary(Ctx&, Index, const std::vector<Annotation>&, UnaryOp op); |
| template<typename Ctx> |
| Result<> makeSelect(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeDrop(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeMemorySize(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeMemoryGrow(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeLocalGet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeLocalTee(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeLocalSet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeGlobalGet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeGlobalSet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeConst(Ctx&, Index, const std::vector<Annotation>&, Type type); |
| template<typename Ctx> |
| Result<> makeLoad(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| Type type, |
| bool signed_, |
| int bytes, |
| bool isAtomic); |
| template<typename Ctx> |
| Result<> makeStore(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| Type type, |
| int bytes, |
| bool isAtomic); |
| template<typename Ctx> |
| Result<> makeAtomicRMW(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| AtomicRMWOp op, |
| Type type, |
| uint8_t bytes); |
| template<typename Ctx> |
| Result<> makeAtomicCmpxchg( |
| Ctx&, Index, const std::vector<Annotation>&, Type type, uint8_t bytes); |
| template<typename Ctx> |
| Result<> makeAtomicWait(Ctx&, Index, const std::vector<Annotation>&, Type type); |
| template<typename Ctx> |
| Result<> makeAtomicNotify(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeAtomicFence(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeSIMDExtract( |
| Ctx&, Index, const std::vector<Annotation>&, SIMDExtractOp op, size_t lanes); |
| template<typename Ctx> |
| Result<> makeSIMDReplace( |
| Ctx&, Index, const std::vector<Annotation>&, SIMDReplaceOp op, size_t lanes); |
| template<typename Ctx> |
| Result<> makeSIMDShuffle(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> |
| makeSIMDTernary(Ctx&, Index, const std::vector<Annotation>&, SIMDTernaryOp op); |
| template<typename Ctx> |
| Result<> |
| makeSIMDShift(Ctx&, Index, const std::vector<Annotation>&, SIMDShiftOp op); |
| template<typename Ctx> |
| Result<> makeSIMDLoad( |
| Ctx&, Index, const std::vector<Annotation>&, SIMDLoadOp op, int bytes); |
| template<typename Ctx> |
| Result<> makeSIMDLoadStoreLane(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| SIMDLoadStoreLaneOp op, |
| int bytes); |
| template<typename Ctx> |
| Result<> makeMemoryInit(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeDataDrop(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeMemoryCopy(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeMemoryFill(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makePop(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeCall(Ctx&, Index, const std::vector<Annotation>&, bool isReturn); |
| template<typename Ctx> |
| Result<> |
| makeCallIndirect(Ctx&, Index, const std::vector<Annotation>&, bool isReturn); |
| template<typename Ctx> |
| Result<> |
| makeBreak(Ctx&, Index, const std::vector<Annotation>&, bool isConditional); |
| template<typename Ctx> |
| Result<> makeBreakTable(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeReturn(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefNull(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefIsNull(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefFunc(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefEq(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableGet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableSet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableSize(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableGrow(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableFill(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableCopy(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTableInit(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeThrow(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRethrow(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeThrowRef(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTupleMake(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTupleExtract(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeTupleDrop(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> |
| makeCallRef(Ctx&, Index, const std::vector<Annotation>&, bool isReturn); |
| template<typename Ctx> |
| Result<> |
| makeRefI31(Ctx&, Index, const std::vector<Annotation>&, Shareability share); |
| template<typename Ctx> |
| Result<> makeI31Get(Ctx&, Index, const std::vector<Annotation>&, bool signed_); |
| template<typename Ctx> |
| Result<> makeRefTest(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefCast(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> |
| makeBrOnNull(Ctx&, Index, const std::vector<Annotation>&, bool onFail = false); |
| template<typename Ctx> |
| Result<> |
| makeBrOnCast(Ctx&, Index, const std::vector<Annotation>&, bool onFail = false); |
| template<typename Ctx> |
| Result<> |
| makeStructNew(Ctx&, Index, const std::vector<Annotation>&, bool default_); |
| template<typename Ctx> |
| Result<> makeStructGet(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| bool signed_ = false); |
| template<typename Ctx> |
| Result<> makeAtomicStructGet(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| bool signed_ = false); |
| template<typename Ctx> |
| Result<> makeStructSet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeAtomicStructSet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStructRMW(AtomicRMWOp, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStructCmpxchg(Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> |
| makeArrayNew(Ctx&, Index, const std::vector<Annotation>&, bool default_); |
| template<typename Ctx> |
| Result<> makeArrayNewData(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayNewElem(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayNewFixed(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> |
| makeArrayGet(Ctx&, Index, const std::vector<Annotation>&, bool signed_ = false); |
| template<typename Ctx> |
| Result<> makeArraySet(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayLen(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayCopy(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayFill(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayInitData(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeArrayInitElem(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeRefAs(Ctx&, Index, const std::vector<Annotation>&, RefAsOp op); |
| template<typename Ctx> |
| Result<> |
| makeStringNew(Ctx&, Index, const std::vector<Annotation>&, StringNewOp op); |
| template<typename Ctx> |
| Result<> makeStringConst(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStringMeasure(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| StringMeasureOp op); |
| template<typename Ctx> |
| Result<> makeStringEncode(Ctx&, |
| Index, |
| const std::vector<Annotation>&, |
| StringEncodeOp op); |
| template<typename Ctx> |
| Result<> makeStringConcat(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStringEq(Ctx&, Index, const std::vector<Annotation>&, StringEqOp); |
| template<typename Ctx> |
| Result<> makeStringWTF16Get(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStringSliceWTF(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeContNew(Ctx*, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeContBind(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeSuspend(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeResume(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeResumeThrow(Ctx&, Index, const std::vector<Annotation>&); |
| template<typename Ctx> |
| Result<> makeStackSwitch(Ctx&, Index, const std::vector<Annotation>&); |
| |
| template<typename Ctx> |
| Result<> ignore(Ctx&, Index, const std::vector<Annotation>&) { |
| return Ok{}; |
| } |
| |
| // Modules |
| template<typename Ctx> |
| MaybeResult<typename Ctx::HeapTypeT> maybeTypeidx(Ctx& ctx); |
| template<typename Ctx> Result<typename Ctx::HeapTypeT> typeidx(Ctx&); |
| template<typename Ctx> |
| Result<typename Ctx::FieldIdxT> fieldidx(Ctx&, typename Ctx::HeapTypeT); |
| template<typename Ctx> MaybeResult<typename Ctx::FuncIdxT> maybeFuncidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::FuncIdxT> funcidx(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::TableIdxT> maybeTableidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::TableIdxT> tableidx(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::TableIdxT> maybeTableuse(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::MemoryIdxT> maybeMemidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::MemoryIdxT> memidx(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::MemoryIdxT> maybeMemuse(Ctx&); |
| template<typename Ctx> Result<typename Ctx::GlobalIdxT> globalidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::ElemIdxT> elemidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::DataIdxT> dataidx(Ctx&); |
| template<typename Ctx> Result<typename Ctx::LocalIdxT> localidx(Ctx&); |
| template<typename Ctx> |
| MaybeResult<typename Ctx::LabelIdxT> maybeLabelidx(Ctx&, |
| bool inDelegate = false); |
| template<typename Ctx> |
| Result<typename Ctx::LabelIdxT> labelidx(Ctx&, bool inDelegate = false); |
| template<typename Ctx> Result<typename Ctx::TagIdxT> tagidx(Ctx&); |
| template<typename Ctx> |
| Result<typename Ctx::TypeUseT> typeuse(Ctx&, bool allowNames = true); |
| MaybeResult<ImportNames> inlineImport(Lexer&); |
| Result<std::vector<Name>> inlineExports(Lexer&); |
| template<typename Ctx> Result<> comptype(Ctx&); |
| template<typename Ctx> Result<> sharecomptype(Ctx&); |
| template<typename Ctx> Result<> subtype(Ctx&); |
| template<typename Ctx> MaybeResult<> typedef_(Ctx&); |
| template<typename Ctx> MaybeResult<> rectype(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::LocalsT> locals(Ctx&); |
| template<typename Ctx> MaybeResult<> import_(Ctx&); |
| template<typename Ctx> MaybeResult<> func(Ctx&); |
| template<typename Ctx> MaybeResult<> table(Ctx&); |
| template<typename Ctx> MaybeResult<> memory(Ctx&); |
| template<typename Ctx> MaybeResult<> global(Ctx&); |
| template<typename Ctx> MaybeResult<> export_(Ctx&); |
| template<typename Ctx> MaybeResult<> start(Ctx&); |
| template<typename Ctx> MaybeResult<typename Ctx::ExprT> maybeElemexpr(Ctx&); |
| template<typename Ctx> Result<typename Ctx::ElemListT> elemlist(Ctx&, bool); |
| template<typename Ctx> MaybeResult<> elem(Ctx&); |
| template<typename Ctx> Result<typename Ctx::DataStringT> datastring(Ctx&); |
| template<typename Ctx> MaybeResult<> data(Ctx&); |
| template<typename Ctx> MaybeResult<> tag(Ctx&); |
| template<typename Ctx> MaybeResult<> modulefield(Ctx&); |
| template<typename Ctx> Result<> module(Ctx&); |
| |
| // ===== |
| // Types |
| // ===== |
| |
| // absheaptype ::= 'func' | 'extern' | ... |
| template<typename Ctx> |
| Result<typename Ctx::HeapTypeT> absheaptype(Ctx& ctx, Shareability share) { |
| if (ctx.in.takeKeyword("func"sv)) { |
| return ctx.makeFuncType(share); |
| } |
| if (ctx.in.takeKeyword("any"sv)) { |
| return ctx.makeAnyType(share); |
| } |
| if (ctx.in.takeKeyword("extern"sv)) { |
| return ctx.makeExternType(share); |
| } |
| if (ctx.in.takeKeyword("eq"sv)) { |
| return ctx.makeEqType(share); |
| } |
| if (ctx.in.takeKeyword("i31"sv)) { |
| return ctx.makeI31Type(share); |
| } |
| if (ctx.in.takeKeyword("struct"sv)) { |
| return ctx.makeStructType(share); |
| } |
| if (ctx.in.takeKeyword("array"sv)) { |
| return ctx.makeArrayType(share); |
| } |
| if (ctx.in.takeKeyword("exn"sv)) { |
| return ctx.makeExnType(share); |
| } |
| if (ctx.in.takeKeyword("string"sv)) { |
| return ctx.makeStringType(share); |
| } |
| if (ctx.in.takeKeyword("cont"sv)) { |
| return ctx.makeContType(share); |
| } |
| if (ctx.in.takeKeyword("none"sv)) { |
| return ctx.makeNoneType(share); |
| } |
| if (ctx.in.takeKeyword("noextern"sv)) { |
| return ctx.makeNoextType(share); |
| } |
| if (ctx.in.takeKeyword("nofunc"sv)) { |
| return ctx.makeNofuncType(share); |
| } |
| if (ctx.in.takeKeyword("noexn"sv)) { |
| return ctx.makeNoexnType(share); |
| } |
| if (ctx.in.takeKeyword("nocont"sv)) { |
| return ctx.makeNocontType(share); |
| } |
| return ctx.in.err("expected abstract heap type"); |
| } |
| |
| // heaptype ::= x:typeidx => types[x] |
| // | t:absheaptype => unshared t |
| // | '(' 'shared' t:absheaptype ')' => shared t |
| template<typename Ctx> Result<typename Ctx::HeapTypeT> heaptype(Ctx& ctx) { |
| if (auto t = maybeTypeidx(ctx)) { |
| CHECK_ERR(t); |
| return *t; |
| } |
| |
| auto share = ctx.in.takeSExprStart("shared"sv) ? Shared : Unshared; |
| auto t = absheaptype(ctx, share); |
| CHECK_ERR(t); |
| if (share == Shared && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of shared abstract heap type"); |
| } |
| return *t; |
| } |
| |
| // reftype ::= 'funcref' => funcref |
| // | 'externref' => externref |
| // | 'anyref' => anyref |
| // | 'eqref' => eqref |
| // | 'i31ref' => i31ref |
| // | 'structref' => structref |
| // | 'arrayref' => arrayref |
| // | '(' ref null? t:heaptype ')' => ref null? t |
| template<typename Ctx> MaybeResult<typename Ctx::TypeT> maybeReftype(Ctx& ctx) { |
| if (ctx.in.takeKeyword("funcref"sv)) { |
| return ctx.makeRefType(ctx.makeFuncType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("externref"sv)) { |
| return ctx.makeRefType(ctx.makeExternType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("anyref"sv)) { |
| return ctx.makeRefType(ctx.makeAnyType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("eqref"sv)) { |
| return ctx.makeRefType(ctx.makeEqType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("i31ref"sv)) { |
| return ctx.makeRefType(ctx.makeI31Type(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("structref"sv)) { |
| return ctx.makeRefType(ctx.makeStructType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("arrayref"sv)) { |
| return ctx.makeRefType(ctx.makeArrayType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("exnref"sv)) { |
| return ctx.makeRefType(ctx.makeExnType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("stringref"sv)) { |
| return ctx.makeRefType(ctx.makeStringType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("contref"sv)) { |
| return ctx.makeRefType(ctx.makeContType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("nullref"sv)) { |
| return ctx.makeRefType(ctx.makeNoneType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("nullexternref"sv)) { |
| return ctx.makeRefType(ctx.makeNoextType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("nullfuncref"sv)) { |
| return ctx.makeRefType(ctx.makeNofuncType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("nullexnref"sv)) { |
| return ctx.makeRefType(ctx.makeNoexnType(Unshared), Nullable); |
| } |
| if (ctx.in.takeKeyword("nullcontref"sv)) { |
| return ctx.makeRefType(ctx.makeNocontType(Unshared), Nullable); |
| } |
| |
| if (!ctx.in.takeSExprStart("ref"sv)) { |
| return {}; |
| } |
| |
| auto nullability = ctx.in.takeKeyword("null"sv) ? Nullable : NonNullable; |
| |
| auto type = heaptype(ctx); |
| CHECK_ERR(type); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of reftype"); |
| } |
| |
| return ctx.makeRefType(*type, nullability); |
| } |
| |
| template<typename Ctx> Result<typename Ctx::TypeT> reftype(Ctx& ctx) { |
| if (auto t = maybeReftype(ctx)) { |
| CHECK_ERR(t); |
| return *t; |
| } |
| return ctx.in.err("expected reftype"); |
| } |
| |
| // tupletype ::= '(' 'tuple' valtype* ')' |
| template<typename Ctx> MaybeResult<typename Ctx::TypeT> tupletype(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("tuple"sv)) { |
| return {}; |
| } |
| auto elems = ctx.makeTupleElemList(); |
| size_t numElems = 0; |
| while (!ctx.in.takeRParen()) { |
| auto elem = singlevaltype(ctx); |
| CHECK_ERR(elem); |
| ctx.appendTupleElem(elems, *elem); |
| ++numElems; |
| } |
| if (numElems < 2) { |
| return ctx.in.err("tuples must have at least two elements"); |
| } |
| return ctx.makeTupleType(elems); |
| } |
| |
| // numtype ::= 'i32' => i32 |
| // | 'i64' => i64 |
| // | 'f32' => f32 |
| // | 'f64' => f64 |
| // vectype ::= 'v128' => v128 |
| // singlevaltype ::= t:numtype => t |
| // | t:vectype => t |
| // | t:reftype => t |
| template<typename Ctx> Result<typename Ctx::TypeT> singlevaltype(Ctx& ctx) { |
| if (ctx.in.takeKeyword("i32"sv)) { |
| return ctx.makeI32(); |
| } else if (ctx.in.takeKeyword("i64"sv)) { |
| return ctx.makeI64(); |
| } else if (ctx.in.takeKeyword("f32"sv)) { |
| return ctx.makeF32(); |
| } else if (ctx.in.takeKeyword("f64"sv)) { |
| return ctx.makeF64(); |
| } else if (ctx.in.takeKeyword("v128"sv)) { |
| return ctx.makeV128(); |
| } else if (auto type = maybeReftype(ctx)) { |
| CHECK_ERR(type); |
| return *type; |
| } else { |
| return ctx.in.err("expected valtype"); |
| } |
| } |
| |
| // valtype ::= singlevaltype | tupletype |
| template<typename Ctx> Result<typename Ctx::TypeT> valtype(Ctx& ctx) { |
| if (auto type = tupletype(ctx)) { |
| CHECK_ERR(type); |
| return *type; |
| } |
| return singlevaltype(ctx); |
| } |
| |
| // param ::= '(' 'param id? t:valtype ')' => [t] |
| // | '(' 'param t*:valtype* ')' => [t*] |
| // params ::= param* |
| template<typename Ctx> |
| MaybeResult<typename Ctx::ParamsT> params(Ctx& ctx, bool allowNames) { |
| bool hasAny = false; |
| auto res = ctx.makeParams(); |
| while (ctx.in.takeSExprStart("param"sv)) { |
| hasAny = true; |
| auto pos = ctx.in.getPos(); |
| if (auto id = ctx.in.takeID()) { |
| // Single named param |
| if (!allowNames) { |
| return ctx.in.err(pos, "unexpected named parameter"); |
| } |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of param"); |
| } |
| ctx.appendParam(res, *id, *type); |
| } else { |
| // Repeated unnamed params |
| while (!ctx.in.takeRParen()) { |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| ctx.appendParam(res, {}, *type); |
| } |
| } |
| } |
| if (hasAny) { |
| return res; |
| } |
| return {}; |
| } |
| |
| // result ::= '(' 'result' t*:valtype ')' => [t*] |
| // results ::= result* |
| template<typename Ctx> MaybeResult<typename Ctx::ResultsT> results(Ctx& ctx) { |
| bool hasAny = false; |
| auto res = ctx.makeResults(); |
| while (ctx.in.takeSExprStart("result"sv)) { |
| hasAny = true; |
| while (!ctx.in.takeRParen()) { |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| ctx.appendResult(res, *type); |
| } |
| } |
| if (hasAny) { |
| return res; |
| } |
| return {}; |
| } |
| |
| // functype ::= '(' 'func' t1*:vec(param) t2*:vec(result) ')' => [t1*] -> [t2*] |
| template<typename Ctx> |
| MaybeResult<typename Ctx::SignatureT> functype(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("func"sv)) { |
| return {}; |
| } |
| |
| auto parsedParams = params(ctx); |
| CHECK_ERR(parsedParams); |
| |
| auto parsedResults = results(ctx); |
| CHECK_ERR(parsedResults); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of functype"); |
| } |
| |
| return ctx.makeFuncType(parsedParams.getPtr(), parsedResults.getPtr()); |
| } |
| |
| // conttype ::= '(' 'cont' x:typeidx ')' => cont x |
| template<typename Ctx> |
| MaybeResult<typename Ctx::ContinuationT> conttype(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("cont"sv)) { |
| return {}; |
| } |
| |
| auto x = typeidx(ctx); |
| CHECK_ERR(x); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of cont type"); |
| } |
| |
| return ctx.makeContType(*x); |
| } |
| |
| // storagetype ::= valtype | packedtype |
| // packedtype ::= i8 | i16 |
| template<typename Ctx> Result<typename Ctx::FieldT> storagetype(Ctx& ctx) { |
| if (ctx.in.takeKeyword("i8"sv)) { |
| return ctx.makeI8(); |
| } |
| if (ctx.in.takeKeyword("i16"sv)) { |
| return ctx.makeI16(); |
| } |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| return ctx.makeStorageType(*type); |
| } |
| |
| // fieldtype ::= t:storagetype => const t |
| // | '(' 'mut' t:storagetype ')' => var t |
| template<typename Ctx> Result<typename Ctx::FieldT> fieldtype(Ctx& ctx) { |
| auto mutability = Immutable; |
| if (ctx.in.takeSExprStart("mut"sv)) { |
| mutability = Mutable; |
| } |
| |
| auto field = storagetype(ctx); |
| CHECK_ERR(field); |
| |
| if (mutability == Mutable) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of field type"); |
| } |
| } |
| |
| return ctx.makeFieldType(*field, mutability); |
| } |
| |
| // field ::= '(' 'field' id t:fieldtype ')' => [(id, t)] |
| // | '(' 'field' t*:fieldtype* ')' => [(_, t*)*] |
| // | fieldtype |
| template<typename Ctx> Result<typename Ctx::FieldsT> fields(Ctx& ctx) { |
| auto res = ctx.makeFields(); |
| while (true) { |
| if (ctx.in.empty() || ctx.in.peekRParen()) { |
| return res; |
| } |
| if (ctx.in.takeSExprStart("field")) { |
| if (auto id = ctx.in.takeID()) { |
| auto field = fieldtype(ctx); |
| CHECK_ERR(field); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of field"); |
| } |
| ctx.appendField(res, *id, *field); |
| } else { |
| while (!ctx.in.takeRParen()) { |
| auto field = fieldtype(ctx); |
| CHECK_ERR(field); |
| ctx.appendField(res, {}, *field); |
| } |
| } |
| } else { |
| auto field = fieldtype(ctx); |
| CHECK_ERR(field); |
| ctx.appendField(res, {}, *field); |
| } |
| } |
| } |
| |
| // structtype ::= '(' 'struct' field* ')' |
| template<typename Ctx> MaybeResult<typename Ctx::StructT> structtype(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("struct"sv)) { |
| return {}; |
| } |
| auto namedFields = fields(ctx); |
| CHECK_ERR(namedFields); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of struct definition"); |
| } |
| |
| return ctx.makeStruct(*namedFields); |
| } |
| |
| // arraytype ::= '(' 'array' field ')' |
| template<typename Ctx> MaybeResult<typename Ctx::ArrayT> arraytype(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("array"sv)) { |
| return {}; |
| } |
| auto namedFields = fields(ctx); |
| CHECK_ERR(namedFields); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of array definition"); |
| } |
| |
| if (auto array = ctx.makeArray(*namedFields)) { |
| return *array; |
| } |
| return ctx.in.err("expected exactly one field in array definition"); |
| } |
| |
| // limits32 ::= n:u32 m:u32? |
| template<typename Ctx> Result<typename Ctx::LimitsT> limits32(Ctx& ctx) { |
| auto n = ctx.in.takeU32(); |
| if (!n) { |
| return ctx.in.err("expected initial size"); |
| } |
| std::optional<uint64_t> m = ctx.in.takeU32(); |
| return ctx.makeLimits(uint64_t(*n), m); |
| } |
| |
| // limits64 ::= n:u64 m:u64? |
| template<typename Ctx> Result<typename Ctx::LimitsT> limits64(Ctx& ctx) { |
| auto n = ctx.in.takeU64(); |
| if (!n) { |
| return ctx.in.err("expected initial size"); |
| } |
| std::optional<uint64_t> m = ctx.in.takeU64(); |
| return ctx.makeLimits(uint64_t(*n), m); |
| } |
| |
| // memtype ::= (limits32 | 'i32' limits32 | 'i64' limit64) shared? |
| // note: the index type 'i32' or 'i64' is already parsed to simplify parsing of |
| // memory abbreviations. |
| template<typename Ctx> Result<typename Ctx::MemTypeT> memtype(Ctx& ctx) { |
| Type addressType = Type::i32; |
| if (ctx.in.takeKeyword("i64"sv)) { |
| addressType = Type::i64; |
| } else { |
| ctx.in.takeKeyword("i32"sv); |
| } |
| return memtypeContinued(ctx, addressType); |
| } |
| |
| template<typename Ctx> |
| Result<typename Ctx::MemTypeT> memtypeContinued(Ctx& ctx, Type addressType) { |
| assert(addressType == Type::i32 || addressType == Type::i64); |
| auto limits = addressType == Type::i32 ? limits32(ctx) : limits64(ctx); |
| CHECK_ERR(limits); |
| bool shared = false; |
| if (ctx.in.takeKeyword("shared"sv)) { |
| shared = true; |
| } |
| return ctx.makeMemType(addressType, *limits, shared); |
| } |
| |
| // memorder ::= '' | 'seqcst' | 'acqrel' |
| template<typename Ctx> Result<MemoryOrder> memorder(Ctx& ctx) { |
| if (ctx.in.takeKeyword("seqcst"sv)) { |
| return MemoryOrder::SeqCst; |
| } |
| if (ctx.in.takeKeyword("acqrel"sv)) { |
| return MemoryOrder::AcqRel; |
| } |
| return MemoryOrder::SeqCst; |
| } |
| |
| // tabletype ::= (limits32 | 'i32' limits32 | 'i64' limit64) reftype |
| template<typename Ctx> Result<typename Ctx::TableTypeT> tabletype(Ctx& ctx) { |
| Type addressType = Type::i32; |
| if (ctx.in.takeKeyword("i64"sv)) { |
| addressType = Type::i64; |
| } else { |
| ctx.in.takeKeyword("i32"sv); |
| } |
| return tabletypeContinued(ctx, addressType); |
| } |
| |
| template<typename Ctx> |
| Result<typename Ctx::TableTypeT> tabletypeContinued(Ctx& ctx, |
| Type addressType) { |
| auto limits = addressType == Type::i32 ? limits32(ctx) : limits64(ctx); |
| CHECK_ERR(limits); |
| auto type = reftype(ctx); |
| CHECK_ERR(type); |
| return ctx.makeTableType(addressType, *limits, *type); |
| } |
| |
| // globaltype ::= t:valtype => const t |
| // | '(' 'mut' t:valtype ')' => var t |
| template<typename Ctx> Result<typename Ctx::GlobalTypeT> globaltype(Ctx& ctx) { |
| auto mutability = Immutable; |
| if (ctx.in.takeSExprStart("mut"sv)) { |
| mutability = Mutable; |
| } |
| |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| |
| if (mutability == Mutable && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of globaltype"); |
| } |
| |
| return ctx.makeGlobalType(mutability, *type); |
| } |
| |
| // arity ::= x:u32 (if x >=2 ) |
| template<typename Ctx> Result<uint32_t> tupleArity(Ctx& ctx) { |
| auto arity = ctx.in.takeU32(); |
| if (!arity) { |
| return ctx.in.err("expected tuple arity"); |
| } |
| if (*arity < 2) { |
| return ctx.in.err("tuple arity must be at least 2"); |
| } |
| return *arity; |
| } |
| |
| // ============ |
| // Instructions |
| // ============ |
| |
| // blockinstr ::= block | loop | if-else | try-catch | try_table |
| template<typename Ctx> |
| MaybeResult<> foldedBlockinstr(Ctx& ctx, |
| const std::vector<Annotation>& annotations) { |
| ctx.setSrcLoc(annotations); |
| if (auto i = block(ctx, annotations, true)) { |
| return i; |
| } |
| if (auto i = ifelse(ctx, annotations, true)) { |
| return i; |
| } |
| if (auto i = loop(ctx, annotations, true)) { |
| return i; |
| } |
| if (auto i = trycatch(ctx, annotations, true)) { |
| return i; |
| } |
| if (auto i = trytable(ctx, annotations, true)) { |
| return i; |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> |
| MaybeResult<> unfoldedBlockinstr(Ctx& ctx, |
| const std::vector<Annotation>& annotations) { |
| ctx.setSrcLoc(annotations); |
| if (auto i = block(ctx, annotations, false)) { |
| return i; |
| } |
| if (auto i = ifelse(ctx, annotations, false)) { |
| return i; |
| } |
| if (auto i = loop(ctx, annotations, false)) { |
| return i; |
| } |
| if (auto i = trycatch(ctx, annotations, false)) { |
| return i; |
| } |
| if (auto i = trytable(ctx, annotations, false)) { |
| return i; |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> |
| MaybeResult<> blockinstr(Ctx& ctx, const std::vector<Annotation>& annotations) { |
| if (auto i = foldedBlockinstr(ctx, annotations)) { |
| return i; |
| } |
| if (auto i = unfoldedBlockinstr(ctx, annotations)) { |
| return i; |
| } |
| return {}; |
| } |
| |
| // plaininstr ::= ... all plain instructions ... |
| template<typename Ctx> |
| MaybeResult<> plaininstr(Ctx& ctx, const std::vector<Annotation>& annotations) { |
| ctx.setSrcLoc(annotations); |
| auto pos = ctx.in.getPos(); |
| auto keyword = ctx.in.takeKeyword(); |
| if (!keyword) { |
| return {}; |
| } |
| |
| #include <gen-s-parser.inc> |
| } |
| |
| // instr ::= plaininstr | blockinstr |
| template<typename Ctx> MaybeResult<> instr(Ctx& ctx) { |
| // Check for valid strings that are not instructions. |
| if (auto keyword = ctx.in.peekKeyword()) { |
| if (keyword == "end"sv || keyword == "then"sv || keyword == "else"sv || |
| keyword == "catch"sv || keyword == "catch_all"sv || |
| keyword == "delegate"sv || keyword == "ref"sv) { |
| return {}; |
| } |
| } |
| if (auto inst = blockinstr(ctx, ctx.in.getAnnotations())) { |
| return inst; |
| } |
| if (auto inst = plaininstr(ctx, ctx.in.getAnnotations())) { |
| return inst; |
| } |
| // TODO: Handle folded plain instructions as well. |
| return {}; |
| } |
| |
| template<typename Ctx> MaybeResult<> foldedinstr(Ctx& ctx) { |
| // We must have an '(' to start a folded instruction. |
| if (!ctx.in.peekLParen()) { |
| return {}; |
| } |
| |
| // Check for valid strings that look like folded instructions but are not. |
| if (ctx.in.peekSExprStart("then"sv) || ctx.in.peekSExprStart("else")) { |
| return {}; |
| } |
| |
| // A stack of (start, end) position pairs defining the positions of |
| // instructions that need to be parsed after their folded children. |
| struct InstrInfo { |
| size_t start; |
| std::optional<size_t> end; |
| std::vector<Annotation> annotations; |
| }; |
| std::vector<InstrInfo> foldedInstrs; |
| |
| do { |
| if (ctx.in.takeRParen()) { |
| // We've reached the end of a folded instruction. Parse it for real. |
| auto info = std::move(foldedInstrs.back()); |
| if (!info.end) { |
| return ctx.in.err("unexpected end of folded instruction"); |
| } |
| foldedInstrs.pop_back(); |
| |
| WithPosition with(ctx, info.start); |
| auto inst = plaininstr(ctx, std::move(info.annotations)); |
| assert(inst && "unexpectedly failed to parse instruction"); |
| CHECK_ERR(inst); |
| // We have already parsed the instruction, so we generally know where it |
| // ends. But there may have been some invalid extra immediates (e.g. |
| // invalid memory indices) that we only realize are invalid now that we've |
| // parsed the instruction for real. |
| if (ctx.in.getPos() != *info.end) { |
| return ctx.in.err("expected end of instruction"); |
| } |
| continue; |
| } |
| |
| auto annotations = ctx.in.takeAnnotations(); |
| |
| // We're not ending an instruction, so we must be starting a new one. Maybe |
| // it is a block instruction. |
| if (auto blockinst = foldedBlockinstr(ctx, annotations)) { |
| CHECK_ERR(blockinst); |
| continue; |
| } |
| |
| // We must be starting a new plain instruction. |
| if (!ctx.in.takeLParen()) { |
| return ctx.in.err("expected folded instruction"); |
| } |
| foldedInstrs.push_back({ctx.in.getPos(), {}, std::move(annotations)}); |
| |
| // Consume the span for the instruction without meaningfully parsing it yet. |
| // It will be parsed for real using the real context after its s-expression |
| // children have been found and parsed. |
| NullCtx nullCtx(ctx.in); |
| if (auto inst = plaininstr(nullCtx, {})) { |
| CHECK_ERR(inst); |
| ctx.in = nullCtx.in; |
| } else { |
| return ctx.in.err("expected instruction"); |
| } |
| |
| // The folded instruction we just started ends here. |
| assert(!foldedInstrs.back().end); |
| foldedInstrs.back().end = ctx.in.getPos(); |
| } while (!foldedInstrs.empty()); |
| |
| return Ok{}; |
| } |
| |
| template<typename Ctx> Result<> instrs(Ctx& ctx) { |
| while (true) { |
| if (auto inst = instr(ctx)) { |
| CHECK_ERR(inst); |
| continue; |
| } |
| if (auto inst = foldedinstr(ctx)) { |
| CHECK_ERR(inst); |
| continue; |
| } |
| break; |
| } |
| return Ok{}; |
| } |
| |
| template<typename Ctx> Result<> foldedinstrs(Ctx& ctx) { |
| while (auto inst = foldedinstr(ctx)) { |
| CHECK_ERR(inst); |
| } |
| return Ok{}; |
| } |
| |
| template<typename Ctx> Result<typename Ctx::ExprT> expr(Ctx& ctx) { |
| CHECK_ERR(instrs(ctx)); |
| return ctx.makeExpr(); |
| } |
| |
| // memarg_n ::= o:offset a:align_n |
| // offset ::= 'offset='o:u64 => o | _ => 0 |
| // align_n ::= 'align='a:u32 => a | _ => n |
| template<typename Ctx> |
| Result<typename Ctx::MemargT> memarg(Ctx& ctx, uint32_t n) { |
| uint64_t offset = 0; |
| uint32_t align = n; |
| if (auto o = ctx.in.takeOffset()) { |
| offset = *o; |
| } |
| if (auto a = ctx.in.takeAlign()) { |
| align = *a; |
| } |
| return ctx.getMemarg(offset, align); |
| } |
| |
| // blocktype ::= (t:result)? => t? | x,I:typeuse => x if I = {} |
| template<typename Ctx> Result<typename Ctx::BlockTypeT> blocktype(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| auto initialLexer = ctx.in; |
| |
| if (auto res = results(ctx)) { |
| CHECK_ERR(res); |
| if (ctx.getResultsSize(*res) == 1) { |
| return ctx.getBlockTypeFromResult(*res); |
| } |
| } |
| |
| // We either had no results or multiple results. Reset and parse again as a |
| // type use. |
| ctx.in = initialLexer; |
| auto use = typeuse(ctx, false); |
| CHECK_ERR(use); |
| |
| auto type = ctx.getBlockTypeFromTypeUse(pos, *use); |
| CHECK_ERR(type); |
| return *type; |
| } |
| |
| // block ::= 'block' label blocktype instr* 'end' id? if id = {} or id = label |
| // | '(' 'block' label blocktype instr* ')' |
| template<typename Ctx> |
| MaybeResult<> |
| block(Ctx& ctx, const std::vector<Annotation>& annotations, bool folded) { |
| auto pos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("block"sv)) || |
| (!folded && !ctx.in.takeKeyword("block"sv))) { |
| return {}; |
| } |
| |
| auto label = ctx.in.takeID(); |
| |
| auto type = blocktype(ctx); |
| CHECK_ERR(type); |
| |
| CHECK_ERR(ctx.makeBlock(pos, annotations, label, *type)); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of block"); |
| } |
| } else { |
| if (!ctx.in.takeKeyword("end"sv)) { |
| return ctx.in.err("expected 'end' at end of block"); |
| } |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| return ctx.in.err("end label does not match block label"); |
| } |
| } |
| |
| return ctx.visitEnd(); |
| } |
| |
| // if ::= 'if' label blocktype instr1* ('else' id1? instr2*)? 'end' id2? |
| // | '(' 'if' label blocktype foldedinstr* '(' 'then' instr1* ')' |
| // ('(' 'else' instr2* ')')? ')' |
| template<typename Ctx> |
| MaybeResult<> |
| ifelse(Ctx& ctx, const std::vector<Annotation>& annotations, bool folded) { |
| auto pos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("if"sv)) || |
| (!folded && !ctx.in.takeKeyword("if"sv))) { |
| return {}; |
| } |
| |
| auto label = ctx.in.takeID(); |
| |
| auto type = blocktype(ctx); |
| CHECK_ERR(type); |
| |
| if (folded) { |
| CHECK_ERR(foldedinstrs(ctx)); |
| ctx.setSrcLoc(annotations); |
| } |
| |
| CHECK_ERR(ctx.makeIf(pos, annotations, label, *type)); |
| |
| if (folded && !ctx.in.takeSExprStart("then"sv)) { |
| return ctx.in.err("expected 'then' before if instructions"); |
| } |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of then block"); |
| } |
| |
| if ((folded && ctx.in.takeSExprStart("else"sv)) || |
| (!folded && ctx.in.takeKeyword("else"sv))) { |
| auto id1 = ctx.in.takeID(); |
| if (id1 && id1 != label) { |
| return ctx.in.err("else label does not match if label"); |
| } |
| |
| CHECK_ERR(ctx.visitElse()); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of else block"); |
| } |
| } |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of if"); |
| } |
| } else { |
| if (!ctx.in.takeKeyword("end"sv)) { |
| return ctx.in.err("expected 'end' at end of if"); |
| } |
| auto id2 = ctx.in.takeID(); |
| if (id2 && id2 != label) { |
| return ctx.in.err("end label does not match if label"); |
| } |
| } |
| |
| return ctx.visitEnd(); |
| } |
| |
| // loop ::= 'loop' label blocktype instr* 'end' id? |
| // | '(' 'loop' label blocktype instr* ')' |
| template<typename Ctx> |
| MaybeResult<> |
| loop(Ctx& ctx, const std::vector<Annotation>& annotations, bool folded) { |
| auto pos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("loop"sv)) || |
| (!folded && !ctx.in.takeKeyword("loop"sv))) { |
| return {}; |
| } |
| |
| auto label = ctx.in.takeID(); |
| |
| auto type = blocktype(ctx); |
| CHECK_ERR(type); |
| |
| CHECK_ERR(ctx.makeLoop(pos, annotations, label, *type)); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of loop"); |
| } |
| } else { |
| if (!ctx.in.takeKeyword("end"sv)) { |
| return ctx.in.err("expected 'end' at end of loop"); |
| } |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| return ctx.in.err("end label does not match loop label"); |
| } |
| } |
| return ctx.visitEnd(); |
| } |
| |
| // trycatch ::= 'try' label blocktype instr* ('catch' id? tagidx instr*)* |
| // ('catch_all' id? instr*)? 'end' id? |
| // | '(' 'try' label blocktype '(' 'do' instr* ')' |
| // ('(' 'catch' tagidx instr* ')')* |
| // ('(' 'catch_all' instr* ')')? ')' |
| // | 'try' label blocktype instr* 'deledate' label |
| // | '(' 'try' label blocktype '(' 'do' instr* ')' |
| // '(' 'delegate' label ')' ')' |
| template<typename Ctx> |
| MaybeResult<> |
| trycatch(Ctx& ctx, const std::vector<Annotation>& annotations, bool folded) { |
| auto pos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("try"sv)) || |
| (!folded && !ctx.in.takeKeyword("try"sv))) { |
| return {}; |
| } |
| |
| auto label = ctx.in.takeID(); |
| |
| auto type = blocktype(ctx); |
| CHECK_ERR(type); |
| |
| CHECK_ERR(ctx.makeTry(pos, annotations, label, *type)); |
| |
| if (folded) { |
| if (!ctx.in.takeSExprStart("do"sv)) { |
| return ctx.in.err("expected 'do' in try"); |
| } |
| } |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of do"); |
| } |
| } |
| |
| if ((folded && ctx.in.takeSExprStart("delegate")) || |
| (!folded && ctx.in.takeKeyword("delegate"))) { |
| auto delegatePos = ctx.in.getPos(); |
| |
| auto label = labelidx(ctx, true); |
| CHECK_ERR(label); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of delegate"); |
| } |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of try"); |
| } |
| } |
| |
| CHECK_ERR(ctx.visitDelegate(delegatePos, *label)); |
| return Ok{}; |
| } |
| |
| while (true) { |
| auto catchPos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("catch"sv)) || |
| (!folded && !ctx.in.takeKeyword("catch"sv))) { |
| break; |
| } |
| |
| // It can be ambiguous whether the name after `catch` is intended to be the |
| // optional ID or the tag identifier. For example: |
| // |
| // (tag $t) |
| // (func $ambiguous |
| // try $t |
| // catch $t |
| // end |
| // ) |
| // |
| // When parsing the `catch`, the parser first tries to parse an optional ID |
| // that must match the label of the `try`, and it succeeds because it sees |
| // `$t` after the catch. However, when it then tries to parse the mandatory |
| // tag index, it fails because the next token is `end`. The problem is that |
| // the `$t` after the `catch` was the tag name and there was no optional ID |
| // after all. The parser sets `parseID = false` and resets to just after the |
| // `catch`, and now it skips parsing the optional ID so it correctly parses |
| // the `$t` as a tag name. |
| bool parseID = !folded; |
| auto afterCatchPos = ctx.in.getPos(); |
| while (true) { |
| if (!folded && parseID) { |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| // Instead of returning an error, retry without the ID. |
| parseID = false; |
| ctx.in.setPos(afterCatchPos); |
| continue; |
| } |
| } |
| |
| auto tag = tagidx(ctx); |
| if (parseID && tag.getErr()) { |
| // Instead of returning an error, retry without the ID. |
| parseID = false; |
| ctx.in.setPos(afterCatchPos); |
| continue; |
| } |
| CHECK_ERR(tag); |
| |
| CHECK_ERR(ctx.visitCatch(catchPos, *tag)); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of catch"); |
| } |
| } |
| break; |
| } |
| } |
| |
| if ((folded && ctx.in.takeSExprStart("catch_all"sv)) || |
| (!folded && ctx.in.takeKeyword("catch_all"sv))) { |
| auto catchPos = ctx.in.getPos(); |
| |
| if (!folded) { |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| return ctx.in.err("catch_all label does not match try label"); |
| } |
| } |
| |
| CHECK_ERR(ctx.visitCatchAll(catchPos)); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of catch_all"); |
| } |
| } |
| } |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of try"); |
| } |
| } else { |
| if (!ctx.in.takeKeyword("end"sv)) { |
| return ctx.in.err("expected 'end' at end of try"); |
| } |
| |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| return ctx.in.err("end label does not match try label"); |
| } |
| } |
| return ctx.visitEnd(); |
| } |
| |
| template<typename Ctx> MaybeResult<typename Ctx::CatchT> catchinstr(Ctx& ctx) { |
| typename Ctx::CatchT result; |
| if (ctx.in.takeSExprStart("catch"sv)) { |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| result = ctx.makeCatch(*tag, *label); |
| } else if (ctx.in.takeSExprStart("catch_ref"sv)) { |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| result = ctx.makeCatchRef(*tag, *label); |
| } else if (ctx.in.takeSExprStart("catch_all"sv)) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| result = ctx.makeCatchAll(*label); |
| } else if (ctx.in.takeSExprStart("catch_all_ref"sv)) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| result = ctx.makeCatchAllRef(*label); |
| } else { |
| return {}; |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of catch clause"); |
| } |
| |
| return result; |
| } |
| |
| // trytable ::= 'try_table' label blocktype catchinstr* instr* 'end' id? |
| // | '(' 'try_table' label blocktype catchinstr* instr* ')' |
| template<typename Ctx> |
| MaybeResult<> |
| trytable(Ctx& ctx, const std::vector<Annotation>& annotations, bool folded) { |
| auto pos = ctx.in.getPos(); |
| |
| if ((folded && !ctx.in.takeSExprStart("try_table"sv)) || |
| (!folded && !ctx.in.takeKeyword("try_table"sv))) { |
| return {}; |
| } |
| |
| auto label = ctx.in.takeID(); |
| |
| auto type = blocktype(ctx); |
| CHECK_ERR(type); |
| |
| auto catches = ctx.makeCatchList(); |
| while (auto c = catchinstr(ctx)) { |
| CHECK_ERR(c); |
| ctx.appendCatch(catches, *c); |
| } |
| |
| CHECK_ERR(ctx.makeTryTable(pos, annotations, label, *type, catches)); |
| |
| CHECK_ERR(instrs(ctx)); |
| |
| if (folded) { |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of try_table"); |
| } |
| } else { |
| if (!ctx.in.takeKeyword("end"sv)) { |
| return ctx.in.err("expected 'end' at end of try_table"); |
| } |
| |
| auto id = ctx.in.takeID(); |
| if (id && id != label) { |
| return ctx.in.err("end label does not match try_table label"); |
| } |
| } |
| return ctx.visitEnd(); |
| } |
| |
| template<typename Ctx> |
| Result<> makeUnreachable(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| return ctx.makeUnreachable(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeNop(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeNop(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> makeBinary(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| BinaryOp op) { |
| return ctx.makeBinary(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeUnary(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| UnaryOp op) { |
| return ctx.makeUnary(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeSelect(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto res = results(ctx); |
| CHECK_ERR(res); |
| return ctx.makeSelect(pos, annotations, res.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeDrop(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeDrop(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> makeMemorySize(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| return ctx.makeMemorySize(pos, annotations, mem.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> makeMemoryGrow(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| return ctx.makeMemoryGrow(pos, annotations, mem.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeLocalGet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto local = localidx(ctx); |
| CHECK_ERR(local); |
| return ctx.makeLocalGet(pos, annotations, *local); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeLocalTee(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto local = localidx(ctx); |
| CHECK_ERR(local); |
| return ctx.makeLocalTee(pos, annotations, *local); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeLocalSet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto local = localidx(ctx); |
| CHECK_ERR(local); |
| return ctx.makeLocalSet(pos, annotations, *local); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeGlobalGet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto global = globalidx(ctx); |
| CHECK_ERR(global); |
| return ctx.makeGlobalGet(pos, annotations, *global); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeGlobalSet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto global = globalidx(ctx); |
| CHECK_ERR(global); |
| return ctx.makeGlobalSet(pos, annotations, *global); |
| } |
| |
| template<typename Ctx> |
| Result<> makeConst(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Type type) { |
| assert(type.isBasic()); |
| switch (type.getBasic()) { |
| case Type::i32: |
| if (auto c = ctx.in.takeI32()) { |
| return ctx.makeI32Const(pos, annotations, *c); |
| } |
| return ctx.in.err("expected i32"); |
| case Type::i64: |
| if (auto c = ctx.in.takeI64()) { |
| return ctx.makeI64Const(pos, annotations, *c); |
| } |
| return ctx.in.err("expected i64"); |
| case Type::f32: |
| if (auto c = ctx.in.takeF32()) { |
| return ctx.makeF32Const(pos, annotations, *c); |
| } |
| return ctx.in.err("expected f32"); |
| case Type::f64: |
| if (auto c = ctx.in.takeF64()) { |
| return ctx.makeF64Const(pos, annotations, *c); |
| } |
| return ctx.in.err("expected f64"); |
| case Type::v128: |
| if (ctx.in.takeKeyword("i8x16"sv)) { |
| std::array<uint8_t, 16> vals; |
| for (size_t i = 0; i < 16; ++i) { |
| auto val = ctx.in.takeI8(); |
| if (!val) { |
| return ctx.in.err("expected i8 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeI8x16Const(pos, annotations, vals); |
| } |
| if (ctx.in.takeKeyword("i16x8"sv)) { |
| std::array<uint16_t, 8> vals; |
| for (size_t i = 0; i < 8; ++i) { |
| auto val = ctx.in.takeI16(); |
| if (!val) { |
| return ctx.in.err("expected i16 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeI16x8Const(pos, annotations, vals); |
| } |
| if (ctx.in.takeKeyword("i32x4"sv)) { |
| std::array<uint32_t, 4> vals; |
| for (size_t i = 0; i < 4; ++i) { |
| auto val = ctx.in.takeI32(); |
| if (!val) { |
| return ctx.in.err("expected i32 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeI32x4Const(pos, annotations, vals); |
| } |
| if (ctx.in.takeKeyword("i64x2"sv)) { |
| std::array<uint64_t, 2> vals; |
| for (size_t i = 0; i < 2; ++i) { |
| auto val = ctx.in.takeI64(); |
| if (!val) { |
| return ctx.in.err("expected i64 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeI64x2Const(pos, annotations, vals); |
| } |
| if (ctx.in.takeKeyword("f32x4"sv)) { |
| std::array<float, 4> vals; |
| for (size_t i = 0; i < 4; ++i) { |
| auto val = ctx.in.takeF32(); |
| if (!val) { |
| return ctx.in.err("expected f32 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeF32x4Const(pos, annotations, vals); |
| } |
| if (ctx.in.takeKeyword("f64x2"sv)) { |
| std::array<double, 2> vals; |
| for (size_t i = 0; i < 2; ++i) { |
| auto val = ctx.in.takeF64(); |
| if (!val) { |
| return ctx.in.err("expected f64 value"); |
| } |
| vals[i] = *val; |
| } |
| return ctx.makeF64x2Const(pos, annotations, vals); |
| } |
| return ctx.in.err("expected SIMD vector shape"); |
| case Type::none: |
| case Type::unreachable: |
| break; |
| } |
| WASM_UNREACHABLE("unexpected type"); |
| } |
| |
| template<typename Ctx> |
| Result<> makeLoad(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Type type, |
| bool signed_, |
| int bytes, |
| bool isAtomic) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| return ctx.makeLoad( |
| pos, annotations, type, signed_, bytes, isAtomic, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStore(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Type type, |
| int bytes, |
| bool isAtomic) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| return ctx.makeStore( |
| pos, annotations, type, bytes, isAtomic, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicRMW(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| AtomicRMWOp op, |
| Type type, |
| uint8_t bytes) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| return ctx.makeAtomicRMW( |
| pos, annotations, op, type, bytes, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicCmpxchg(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Type type, |
| uint8_t bytes) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| return ctx.makeAtomicCmpxchg( |
| pos, annotations, type, bytes, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicWait(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Type type) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, type == Type::i32 ? 4 : 8); |
| CHECK_ERR(arg); |
| return ctx.makeAtomicWait(pos, annotations, type, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicNotify(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, 4); |
| CHECK_ERR(arg); |
| return ctx.makeAtomicNotify(pos, annotations, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicFence(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| return ctx.makeAtomicFence(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDExtract(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDExtractOp op, |
| size_t) { |
| auto lane = ctx.in.takeU8(); |
| if (!lane) { |
| return ctx.in.err("expected lane index"); |
| } |
| return ctx.makeSIMDExtract(pos, annotations, op, *lane); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDReplace(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDReplaceOp op, |
| size_t lanes) { |
| auto lane = ctx.in.takeU8(); |
| if (!lane) { |
| return ctx.in.err("expected lane index"); |
| } |
| return ctx.makeSIMDReplace(pos, annotations, op, *lane); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDShuffle(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| std::array<uint8_t, 16> lanes; |
| for (int i = 0; i < 16; ++i) { |
| auto lane = ctx.in.takeU8(); |
| if (!lane) { |
| return ctx.in.err("expected lane index"); |
| } |
| lanes[i] = *lane; |
| } |
| return ctx.makeSIMDShuffle(pos, annotations, lanes); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDTernary(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDTernaryOp op) { |
| return ctx.makeSIMDTernary(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDShift(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDShiftOp op) { |
| return ctx.makeSIMDShift(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDLoad(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDLoadOp op, |
| int bytes) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| return ctx.makeSIMDLoad(pos, annotations, op, mem.getPtr(), *arg); |
| } |
| |
| template<typename Ctx> |
| Result<> makeSIMDLoadStoreLane(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| SIMDLoadStoreLaneOp op, |
| int bytes) { |
| auto reset = ctx.in.getPos(); |
| |
| auto retry = [&]() -> Result<> { |
| // We failed to parse. Maybe the lane index was accidentally parsed as the |
| // optional memory index. Try again without parsing a memory index. |
| WithPosition with(ctx, reset); |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| auto lane = ctx.in.takeU8(); |
| if (!lane) { |
| return ctx.in.err("expected lane index"); |
| } |
| return ctx.makeSIMDLoadStoreLane( |
| pos, annotations, op, nullptr, *arg, *lane); |
| }; |
| |
| auto mem = maybeMemidx(ctx); |
| if (mem.getErr()) { |
| return retry(); |
| } |
| auto arg = memarg(ctx, bytes); |
| CHECK_ERR(arg); |
| auto lane = ctx.in.takeU8(); |
| if (!lane) { |
| return retry(); |
| } |
| return ctx.makeSIMDLoadStoreLane( |
| pos, annotations, op, mem.getPtr(), *arg, *lane); |
| } |
| |
| template<typename Ctx> |
| Result<> makeMemoryInit(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto reset = ctx.in.getPos(); |
| |
| auto retry = [&]() -> Result<> { |
| // We failed to parse. Maybe the data index was accidentally parsed as the |
| // optional memory index. Try again without parsing a memory index. |
| WithPosition with(ctx, reset); |
| auto data = dataidx(ctx); |
| CHECK_ERR(data); |
| return ctx.makeMemoryInit(pos, annotations, nullptr, *data); |
| }; |
| |
| auto mem = maybeMemidx(ctx); |
| if (mem.getErr()) { |
| return retry(); |
| } |
| auto data = dataidx(ctx); |
| if (data.getErr()) { |
| return retry(); |
| } |
| return ctx.makeMemoryInit(pos, annotations, mem.getPtr(), *data); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeDataDrop(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto data = dataidx(ctx); |
| CHECK_ERR(data); |
| return ctx.makeDataDrop(pos, annotations, *data); |
| } |
| |
| template<typename Ctx> |
| Result<> makeMemoryCopy(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto destMem = maybeMemidx(ctx); |
| CHECK_ERR(destMem); |
| std::optional<typename Ctx::MemoryIdxT> srcMem = std::nullopt; |
| if (destMem) { |
| auto mem = memidx(ctx); |
| CHECK_ERR(mem); |
| srcMem = *mem; |
| } |
| return ctx.makeMemoryCopy( |
| pos, annotations, destMem.getPtr(), srcMem ? &*srcMem : nullptr); |
| } |
| |
| template<typename Ctx> |
| Result<> makeMemoryFill(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto mem = maybeMemidx(ctx); |
| CHECK_ERR(mem); |
| return ctx.makeMemoryFill(pos, annotations, mem.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makePop(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| return ctx.makePop(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> makeCall(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool isReturn) { |
| auto func = funcidx(ctx); |
| CHECK_ERR(func); |
| return ctx.makeCall(pos, annotations, *func, isReturn); |
| } |
| |
| template<typename Ctx> |
| Result<> makeCallIndirect(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool isReturn) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| auto type = typeuse(ctx, false); |
| CHECK_ERR(type); |
| return ctx.makeCallIndirect( |
| pos, annotations, table.getPtr(), *type, isReturn); |
| } |
| |
| template<typename Ctx> |
| Result<> makeBreak(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool isConditional) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| return ctx.makeBreak(pos, annotations, *label, isConditional); |
| } |
| |
| template<typename Ctx> |
| Result<> makeBreakTable(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| std::vector<typename Ctx::LabelIdxT> labels; |
| // Parse at least one label; return an error only if we parse none. |
| while (true) { |
| auto label = maybeLabelidx(ctx); |
| if (!label) { |
| break; |
| } |
| CHECK_ERR(label); |
| labels.push_back(*label); |
| } |
| if (labels.empty()) { |
| return ctx.in.err("expected label"); |
| } |
| auto defaultLabel = labels.back(); |
| labels.pop_back(); |
| return ctx.makeSwitch(pos, annotations, labels, defaultLabel); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeReturn(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeReturn(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefNull(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto t = heaptype(ctx); |
| CHECK_ERR(t); |
| return ctx.makeRefNull(pos, annotations, *t); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefIsNull(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeRefIsNull(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefFunc(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto func = funcidx(ctx); |
| CHECK_ERR(func); |
| return ctx.makeRefFunc(pos, annotations, *func); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefEq(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeRefEq(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableGet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| return ctx.makeTableGet(pos, annotations, table.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableSet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| return ctx.makeTableSet(pos, annotations, table.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableSize(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| return ctx.makeTableSize(pos, annotations, table.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableGrow(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| return ctx.makeTableGrow(pos, annotations, table.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableFill(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| return ctx.makeTableFill(pos, annotations, table.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableCopy(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto destTable = maybeTableidx(ctx); |
| CHECK_ERR(destTable); |
| auto srcTable = maybeTableidx(ctx); |
| CHECK_ERR(srcTable); |
| if (destTable && !srcTable) { |
| return ctx.in.err("expected table index or identifier"); |
| } |
| return ctx.makeTableCopy( |
| pos, annotations, destTable.getPtr(), srcTable.getPtr()); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTableInit(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto table = maybeTableidx(ctx); |
| CHECK_ERR(table); |
| auto elem = elemidx(ctx); |
| CHECK_ERR(elem); |
| return ctx.makeTableInit(pos, annotations, table.getPtr(), *elem); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeThrow(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| return ctx.makeThrow(pos, annotations, *tag); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRethrow(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| return ctx.makeRethrow(pos, annotations, *label); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeThrowRef(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeThrowRef(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTupleMake(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto arity = tupleArity(ctx); |
| CHECK_ERR(arity); |
| return ctx.makeTupleMake(pos, annotations, *arity); |
| } |
| |
| template<typename Ctx> |
| Result<> makeTupleExtract(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto arity = tupleArity(ctx); |
| CHECK_ERR(arity); |
| auto index = ctx.in.takeU32(); |
| if (!index) { |
| return ctx.in.err("expected tuple index"); |
| } |
| return ctx.makeTupleExtract(pos, annotations, *arity, *index); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeTupleDrop(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto arity = tupleArity(ctx); |
| CHECK_ERR(arity); |
| return ctx.makeTupleDrop(pos, annotations, *arity); |
| } |
| |
| template<typename Ctx> |
| Result<> makeCallRef(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool isReturn) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| return ctx.makeCallRef(pos, annotations, *type, isReturn); |
| } |
| |
| template<typename Ctx> |
| Result<> makeRefI31(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| Shareability share) { |
| return ctx.makeRefI31(pos, annotations, share); |
| } |
| |
| template<typename Ctx> |
| Result<> makeI31Get(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool signed_) { |
| return ctx.makeI31Get(pos, annotations, signed_); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefTest(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = reftype(ctx); |
| CHECK_ERR(type); |
| return ctx.makeRefTest(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeRefCast(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = reftype(ctx); |
| CHECK_ERR(type); |
| return ctx.makeRefCast(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> makeBrOnNull(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool onFail) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| return ctx.makeBrOn( |
| pos, annotations, *label, onFail ? BrOnNonNull : BrOnNull); |
| } |
| |
| template<typename Ctx> |
| Result<> makeBrOnCast(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool onFail) { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| auto in = reftype(ctx); |
| CHECK_ERR(in); |
| auto out = reftype(ctx); |
| CHECK_ERR(out); |
| return ctx.makeBrOn( |
| pos, annotations, *label, onFail ? BrOnCastFail : BrOnCast, *in, *out); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStructNew(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool default_) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| if (default_) { |
| return ctx.makeStructNewDefault(pos, annotations, *type); |
| } |
| return ctx.makeStructNew(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStructGet(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool signed_) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructGet( |
| pos, annotations, *type, *field, signed_, MemoryOrder::Unordered); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicStructGet(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool signed_) { |
| auto order = memorder(ctx); |
| CHECK_ERR(order); |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructGet(pos, annotations, *type, *field, signed_, *order); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeStructSet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructSet( |
| pos, annotations, *type, *field, MemoryOrder::Unordered); |
| } |
| |
| template<typename Ctx> |
| Result<> makeAtomicStructSet(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto order = memorder(ctx); |
| CHECK_ERR(order); |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructSet(pos, annotations, *type, *field, *order); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStructRMW(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| AtomicRMWOp op) { |
| auto order1 = memorder(ctx); |
| CHECK_ERR(order1); |
| auto order2 = memorder(ctx); |
| CHECK_ERR(order2); |
| if (*order1 != *order2) { |
| return ctx.in.err(pos, "struct.atomic.rmw memory orders must be identical"); |
| } |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructRMW(pos, annotations, op, *type, *field, *order1); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStructCmpxchg(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto order1 = memorder(ctx); |
| CHECK_ERR(order1); |
| auto order2 = memorder(ctx); |
| CHECK_ERR(order2); |
| if (*order1 != *order2) { |
| return ctx.in.err(pos, "struct.atomic.rmw memory orders must be identical"); |
| } |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto field = fieldidx(ctx, *type); |
| CHECK_ERR(field); |
| return ctx.makeStructCmpxchg(pos, annotations, *type, *field, *order1); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayNew(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool default_) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| if (default_) { |
| return ctx.makeArrayNewDefault(pos, annotations, *type); |
| } |
| return ctx.makeArrayNew(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayNewData(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto data = dataidx(ctx); |
| CHECK_ERR(data); |
| return ctx.makeArrayNewData(pos, annotations, *type, *data); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayNewElem(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto elem = elemidx(ctx); |
| CHECK_ERR(elem); |
| return ctx.makeArrayNewElem(pos, annotations, *type, *elem); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayNewFixed(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto arity = ctx.in.takeU32(); |
| if (!arity) { |
| return ctx.in.err(pos, "expected array.new_fixed arity"); |
| } |
| return ctx.makeArrayNewFixed(pos, annotations, *type, *arity); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayGet(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| bool signed_) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| return ctx.makeArrayGet(pos, annotations, *type, signed_); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeArraySet(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| return ctx.makeArraySet(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeArrayLen(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| return ctx.makeArrayLen(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeArrayCopy(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto destType = typeidx(ctx); |
| CHECK_ERR(destType); |
| auto srcType = typeidx(ctx); |
| CHECK_ERR(srcType); |
| return ctx.makeArrayCopy(pos, annotations, *destType, *srcType); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeArrayFill(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| return ctx.makeArrayFill(pos, annotations, *type); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayInitData(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto data = dataidx(ctx); |
| CHECK_ERR(data); |
| return ctx.makeArrayInitData(pos, annotations, *type, *data); |
| } |
| |
| template<typename Ctx> |
| Result<> makeArrayInitElem(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto elem = elemidx(ctx); |
| CHECK_ERR(elem); |
| return ctx.makeArrayInitElem(pos, annotations, *type, *elem); |
| } |
| |
| template<typename Ctx> |
| Result<> makeRefAs(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| RefAsOp op) { |
| return ctx.makeRefAs(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringNew(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| StringNewOp op) { |
| return ctx.makeStringNew(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringConst(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto str = ctx.in.takeString(); |
| if (!str) { |
| return ctx.in.err("expected string"); |
| } |
| return ctx.makeStringConst(pos, annotations, *str); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringMeasure(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| StringMeasureOp op) { |
| return ctx.makeStringMeasure(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringEncode(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| StringEncodeOp op) { |
| return ctx.makeStringEncode(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringConcat(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| return ctx.makeStringConcat(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringEq(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations, |
| StringEqOp op) { |
| return ctx.makeStringEq(pos, annotations, op); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringWTF16Get(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| return ctx.makeStringWTF16Get(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> makeStringSliceWTF(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| return ctx.makeStringSliceWTF(pos, annotations); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeContNew(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| |
| return ctx.makeContNew(pos, annotations, *type); |
| } |
| |
| // contbind ::= 'cont.bind' typeidx typeidx |
| template<typename Ctx> |
| Result<> |
| makeContBind(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto sourceType = typeidx(ctx); |
| CHECK_ERR(sourceType); |
| |
| auto targetType = typeidx(ctx); |
| CHECK_ERR(targetType); |
| |
| return ctx.makeContBind(pos, annotations, *sourceType, *targetType); |
| } |
| |
| template<typename Ctx> |
| Result<> |
| makeSuspend(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| |
| return ctx.makeSuspend(pos, annotations, *tag); |
| } |
| |
| // resumetable ::= ('(' 'on' tagidx labelidx | 'on' tagidx switch ')')* |
| template<typename Ctx> |
| Result<typename Ctx::OnClauseListT> makeResumeTable(Ctx& ctx) { |
| auto resumetable = ctx.makeOnClauseList(); |
| while (ctx.in.takeSExprStart("on"sv)) { |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| if (ctx.in.takeKeyword("switch")) { |
| ctx.appendOnClause(resumetable, ctx.makeOnSwitch(*tag)); |
| } else { |
| auto label = labelidx(ctx); |
| CHECK_ERR(label); |
| ctx.appendOnClause(resumetable, ctx.makeOnLabel(*tag, *label)); |
| } |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected ')' at end of handler clause"); |
| } |
| } |
| return resumetable; |
| } |
| |
| // resume ::= 'resume' typeidx resumetable |
| template<typename Ctx> |
| Result<> |
| makeResume(Ctx& ctx, Index pos, const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| |
| auto resumetable = makeResumeTable(ctx); |
| CHECK_ERR(resumetable); |
| |
| return ctx.makeResume(pos, annotations, *type, *resumetable); |
| } |
| |
| // resume_throw ::= 'resume_throw' typeidx tagidx ('(' 'on' tagidx labelidx | |
| // 'on' tagidx switch ')')* |
| template<typename Ctx> |
| Result<> makeResumeThrow(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto exnTag = tagidx(ctx); |
| CHECK_ERR(exnTag); |
| |
| auto resumetable = makeResumeTable(ctx); |
| CHECK_ERR(resumetable); |
| |
| return ctx.makeResumeThrow(pos, annotations, *type, *exnTag, *resumetable); |
| } |
| |
| // switch ::= 'switch' typeidx tagidx |
| template<typename Ctx> |
| Result<> makeStackSwitch(Ctx& ctx, |
| Index pos, |
| const std::vector<Annotation>& annotations) { |
| auto type = typeidx(ctx); |
| CHECK_ERR(type); |
| auto tag = tagidx(ctx); |
| CHECK_ERR(tag); |
| |
| return ctx.makeStackSwitch(pos, annotations, *type, *tag); |
| } |
| |
| // ======= |
| // Modules |
| // ======= |
| |
| // typeidx ::= x:u32 => x |
| // | v:id => x (if types[x] = v) |
| template<typename Ctx> |
| MaybeResult<typename Ctx::HeapTypeT> maybeTypeidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getHeapTypeFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| // TODO: Fix position to point to start of id, not next element. |
| auto idx = ctx.getTypeIndex(*id); |
| CHECK_ERR(idx); |
| return ctx.getHeapTypeFromIdx(*idx); |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> Result<typename Ctx::HeapTypeT> typeidx(Ctx& ctx) { |
| if (auto t = maybeTypeidx(ctx)) { |
| CHECK_ERR(t); |
| return *t; |
| } |
| return ctx.in.err("expected type index or identifier"); |
| } |
| |
| // fieldidx ::= x:u32 => x |
| // | v:id => x (if t.fields[x] = v) |
| template<typename Ctx> |
| Result<typename Ctx::FieldIdxT> fieldidx(Ctx& ctx, |
| typename Ctx::HeapTypeT type) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getFieldFromIdx(type, *x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getFieldFromName(type, *id); |
| } |
| return ctx.in.err("expected field index or identifier"); |
| } |
| |
| // funcidx ::= x:u32 => x |
| // | v:id => x (if t.funcs[x] = v) |
| template<typename Ctx> |
| MaybeResult<typename Ctx::FuncIdxT> maybeFuncidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getFuncFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getFuncFromName(*id); |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> Result<typename Ctx::FuncIdxT> funcidx(Ctx& ctx) { |
| if (auto idx = maybeFuncidx(ctx)) { |
| CHECK_ERR(idx); |
| return *idx; |
| } |
| return ctx.in.err("expected function index or identifier"); |
| } |
| |
| // tableidx ::= x:u23 => x |
| // | v:id => x (if tables[x] = v) |
| template<typename Ctx> |
| MaybeResult<typename Ctx::TableIdxT> maybeTableidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getTableFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getTableFromName(*id); |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> Result<typename Ctx::TableIdxT> tableidx(Ctx& ctx) { |
| if (auto idx = maybeTableidx(ctx)) { |
| CHECK_ERR(idx); |
| return *idx; |
| } |
| return ctx.in.err("expected table index or identifier"); |
| } |
| |
| // tableuse ::= '(' 'table' x:tableidx ')' |
| template<typename Ctx> |
| MaybeResult<typename Ctx::TableIdxT> maybeTableuse(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("table"sv)) { |
| return {}; |
| } |
| auto idx = tableidx(ctx); |
| CHECK_ERR(idx); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("Expected end of memory use"); |
| } |
| return *idx; |
| } |
| |
| // memidx ::= x:u32 => x |
| // | v:id => x (if memories[x] = v) |
| template<typename Ctx> |
| MaybeResult<typename Ctx::MemoryIdxT> maybeMemidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getMemoryFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getMemoryFromName(*id); |
| } |
| return {}; |
| } |
| |
| template<typename Ctx> Result<typename Ctx::MemoryIdxT> memidx(Ctx& ctx) { |
| if (auto idx = maybeMemidx(ctx)) { |
| CHECK_ERR(idx); |
| return *idx; |
| } |
| return ctx.in.err("expected memory index or identifier"); |
| } |
| |
| // memuse ::= '(' 'memory' x:memidx ')' => x |
| template<typename Ctx> |
| MaybeResult<typename Ctx::MemoryIdxT> maybeMemuse(Ctx& ctx) { |
| if (!ctx.in.takeSExprStart("memory"sv)) { |
| return {}; |
| } |
| auto idx = memidx(ctx); |
| CHECK_ERR(idx); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of memory use"); |
| } |
| return *idx; |
| } |
| |
| // globalidx ::= x:u32 => x |
| // | v:id => x (if globals[x] = v) |
| template<typename Ctx> Result<typename Ctx::GlobalIdxT> globalidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getGlobalFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getGlobalFromName(*id); |
| } |
| return ctx.in.err("expected global index or identifier"); |
| } |
| |
| // elemidx ::= x:u32 => x |
| // | v:id => x (if elems[x] = v) |
| template<typename Ctx> Result<typename Ctx::ElemIdxT> elemidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getElemFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getElemFromName(*id); |
| } |
| return ctx.in.err("expected elem index or identifier"); |
| } |
| |
| // dataidx ::= x:u32 => x |
| // | v:id => x (if datas[x] = v) |
| template<typename Ctx> Result<typename Ctx::DataIdxT> dataidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getDataFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getDataFromName(*id); |
| } |
| return ctx.in.err("expected data index or identifier"); |
| } |
| |
| // localidx ::= x:u32 => x |
| // | v:id => x (if locals[x] = v) |
| template<typename Ctx> Result<typename Ctx::LocalIdxT> localidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getLocalFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getLocalFromName(*id); |
| } |
| return ctx.in.err("expected local index or identifier"); |
| } |
| |
| template<typename Ctx> |
| Result<typename Ctx::LabelIdxT> labelidx(Ctx& ctx, bool inDelegate) { |
| if (auto idx = maybeLabelidx(ctx, inDelegate)) { |
| CHECK_ERR(idx); |
| return *idx; |
| } |
| return ctx.in.err("expected label index or identifier"); |
| } |
| |
| // labelidx ::= x:u32 => x |
| // | v:id => x (if labels[x] = v) |
| template<typename Ctx> |
| MaybeResult<typename Ctx::LabelIdxT> maybeLabelidx(Ctx& ctx, bool inDelegate) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getLabelFromIdx(*x, inDelegate); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getLabelFromName(*id, inDelegate); |
| } |
| return {}; |
| } |
| |
| // tagidx ::= x:u32 => x |
| // | v:id => x (if tags[x] = v) |
| template<typename Ctx> Result<typename Ctx::TagIdxT> tagidx(Ctx& ctx) { |
| if (auto x = ctx.in.takeU32()) { |
| return ctx.getTagFromIdx(*x); |
| } |
| if (auto id = ctx.in.takeID()) { |
| return ctx.getTagFromName(*id); |
| } |
| return ctx.in.err("expected tag index or identifier"); |
| } |
| |
| // typeuse ::= '(' 'type' x:typeidx ')' => x, [] |
| // (if typedefs[x] = [t1*] -> [t2*] |
| // | '(' 'type' x:typeidx ')' ((t1,IDs):param)* (t2:result)* => x, IDs |
| // (if typedefs[x] = [t1*] -> [t2*]) |
| // | ((t1,IDs):param)* (t2:result)* => x, IDs |
| // (if x is minimum s.t. typedefs[x] = [t1*] -> [t2*]) |
| template<typename Ctx> |
| Result<typename Ctx::TypeUseT> typeuse(Ctx& ctx, bool allowNames) { |
| auto pos = ctx.in.getPos(); |
| std::optional<typename Ctx::HeapTypeT> type; |
| if (ctx.in.takeSExprStart("type"sv)) { |
| auto x = typeidx(ctx); |
| CHECK_ERR(x); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of type use"); |
| } |
| |
| type = *x; |
| } |
| |
| auto namedParams = params(ctx, allowNames); |
| CHECK_ERR(namedParams); |
| |
| auto resultTypes = results(ctx); |
| CHECK_ERR(resultTypes); |
| |
| return ctx.makeTypeUse(pos, type, namedParams.getPtr(), resultTypes.getPtr()); |
| } |
| |
| // ('(' 'import' mod:name nm:name ')')? |
| inline MaybeResult<ImportNames> inlineImport(Lexer& in) { |
| if (!in.takeSExprStart("import"sv)) { |
| return {}; |
| } |
| auto mod = in.takeName(); |
| if (!mod) { |
| return in.err("expected import module"); |
| } |
| auto nm = in.takeName(); |
| if (!nm) { |
| return in.err("expected import name"); |
| } |
| if (!in.takeRParen()) { |
| return in.err("expected end of import"); |
| } |
| // TODO: Return Ok when parsing Decls. |
| return {{*mod, *nm}}; |
| } |
| |
| // ('(' 'export' name ')')* |
| inline Result<std::vector<Name>> inlineExports(Lexer& in) { |
| std::vector<Name> exports; |
| while (in.takeSExprStart("export"sv)) { |
| auto name = in.takeName(); |
| if (!name) { |
| return in.err("expected export name"); |
| } |
| if (!in.takeRParen()) { |
| return in.err("expected end of import"); |
| } |
| exports.push_back(*name); |
| } |
| return exports; |
| } |
| |
| // comptype ::= ft:functype => ft |
| // | ct:conttype => ct |
| // | st:structtype => st |
| // | at:arraytype => at |
| template<typename Ctx> Result<> comptype(Ctx& ctx) { |
| if (auto type = functype(ctx)) { |
| CHECK_ERR(type); |
| ctx.addFuncType(*type); |
| return Ok{}; |
| } |
| if (auto type = conttype(ctx)) { |
| CHECK_ERR(type); |
| ctx.addContType(*type); |
| return Ok{}; |
| } |
| if (auto type = structtype(ctx)) { |
| CHECK_ERR(type); |
| ctx.addStructType(*type); |
| return Ok{}; |
| } |
| if (auto type = arraytype(ctx)) { |
| CHECK_ERR(type); |
| ctx.addArrayType(*type); |
| return Ok{}; |
| } |
| return ctx.in.err("expected type description"); |
| } |
| |
| // sharecomptype ::= '(' 'shared' t:comptype ')' => shared t |
| // | t:comptype => unshared t |
| template<typename Ctx> Result<> sharecomptype(Ctx& ctx) { |
| if (ctx.in.takeSExprStart("shared"sv)) { |
| ctx.setShared(); |
| CHECK_ERR(comptype(ctx)); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of shared comptype"); |
| } |
| } else { |
| CHECK_ERR(comptype(ctx)); |
| } |
| return Ok{}; |
| } |
| |
| // subtype ::= '(' 'sub' typeidx? sharecomptype ')' | sharecomptype |
| template<typename Ctx> Result<> subtype(Ctx& ctx) { |
| if (ctx.in.takeSExprStart("sub"sv)) { |
| if (!ctx.in.takeKeyword("final"sv)) { |
| ctx.setOpen(); |
| } |
| if (auto super = maybeTypeidx(ctx)) { |
| CHECK_ERR(super); |
| CHECK_ERR(ctx.addSubtype(*super)); |
| } |
| |
| CHECK_ERR(sharecomptype(ctx)); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of subtype definition"); |
| } |
| } else { |
| CHECK_ERR(sharecomptype(ctx)); |
| } |
| return Ok{}; |
| } |
| |
| // typedef ::= '(' 'type' id? subtype ')' |
| template<typename Ctx> MaybeResult<> typedef_(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| |
| if (!ctx.in.takeSExprStart("type"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto sub = subtype(ctx); |
| CHECK_ERR(sub); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of type definition"); |
| } |
| |
| ctx.finishTypeDef(name, pos); |
| return Ok{}; |
| } |
| |
| // rectype ::= '(' 'rec' subtype* ')' |
| // | subtype |
| template<typename Ctx> MaybeResult<> rectype(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| |
| if (ctx.in.takeSExprStart("rec"sv)) { |
| size_t startIndex = ctx.getRecGroupStartIndex(); |
| size_t groupLen = 0; |
| while (auto type = typedef_(ctx)) { |
| CHECK_ERR(type); |
| ++groupLen; |
| } |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected type definition or end of recursion group"); |
| } |
| ctx.addRecGroup(startIndex, groupLen); |
| } else if (auto type = typedef_(ctx)) { |
| CHECK_ERR(type); |
| } else { |
| return {}; |
| } |
| |
| ctx.finishRectype(pos); |
| return Ok{}; |
| } |
| |
| // local ::= '(' 'local id? t:valtype ')' => [t] |
| // | '(' 'local t*:valtype* ')' => [t*] |
| // locals ::= local* |
| template<typename Ctx> MaybeResult<typename Ctx::LocalsT> locals(Ctx& ctx) { |
| bool hasAny = false; |
| auto res = ctx.makeLocals(); |
| while (ctx.in.takeSExprStart("local"sv)) { |
| hasAny = true; |
| if (auto id = ctx.in.takeID()) { |
| // Single named local |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of local"); |
| } |
| ctx.appendLocal(res, *id, *type); |
| } else { |
| // Repeated unnamed locals |
| while (!ctx.in.takeRParen()) { |
| auto type = valtype(ctx); |
| CHECK_ERR(type); |
| ctx.appendLocal(res, {}, *type); |
| } |
| } |
| } |
| if (hasAny) { |
| return res; |
| } |
| return {}; |
| } |
| |
| // import ::= '(' 'import' mod:name nm:name importdesc ')' |
| // importdesc ::= '(' 'func' id? typeuse ')' |
| // | '(' 'table' id? tabletype ')' |
| // | '(' 'memory' id? memtype ')' |
| // | '(' 'global' id? globaltype ')' |
| // | '(' 'tag' id? typeuse ')' |
| template<typename Ctx> MaybeResult<> import_(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| |
| if (!ctx.in.takeSExprStart("import"sv)) { |
| return {}; |
| } |
| |
| auto mod = ctx.in.takeName(); |
| if (!mod) { |
| return ctx.in.err("expected import module name"); |
| } |
| |
| auto nm = ctx.in.takeName(); |
| if (!nm) { |
| return ctx.in.err("expected import name"); |
| } |
| ImportNames names{*mod, *nm}; |
| |
| if (ctx.in.takeSExprStart("func"sv)) { |
| auto name = ctx.in.takeID(); |
| auto type = typeuse(ctx); |
| CHECK_ERR(type); |
| // TODO: function import annotations |
| CHECK_ERR(ctx.addFunc( |
| name ? *name : Name{}, {}, &names, *type, std::nullopt, {}, pos)); |
| } else if (ctx.in.takeSExprStart("table"sv)) { |
| auto name = ctx.in.takeID(); |
| auto type = tabletype(ctx); |
| CHECK_ERR(type); |
| CHECK_ERR(ctx.addTable(name ? *name : Name{}, {}, &names, *type, pos)); |
| } else if (ctx.in.takeSExprStart("memory"sv)) { |
| auto name = ctx.in.takeID(); |
| auto type = memtype(ctx); |
| CHECK_ERR(type); |
| CHECK_ERR(ctx.addMemory(name ? *name : Name{}, {}, &names, *type, pos)); |
| } else if (ctx.in.takeSExprStart("global"sv)) { |
| auto name = ctx.in.takeID(); |
| auto type = globaltype(ctx); |
| CHECK_ERR(type); |
| CHECK_ERR(ctx.addGlobal( |
| name ? *name : Name{}, {}, &names, *type, std::nullopt, pos)); |
| } else if (ctx.in.takeSExprStart("tag"sv)) { |
| auto name = ctx.in.takeID(); |
| auto type = typeuse(ctx); |
| CHECK_ERR(type); |
| CHECK_ERR(ctx.addTag(name ? *name : Name{}, {}, &names, *type, pos)); |
| } else { |
| return ctx.in.err("expected import description"); |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of import description"); |
| } |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of import"); |
| } |
| |
| return Ok{}; |
| } |
| |
| // func ::= '(' 'func' id? ('(' 'export' name ')')* |
| // x,I:typeuse t*:vec(local) (in:instr)* ')' |
| // | '(' 'func' id? ('(' 'export' name ')')* |
| // '(' 'import' mod:name nm:name ')' typeuse ')' |
| template<typename Ctx> MaybeResult<> func(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| auto annotations = ctx.in.getAnnotations(); |
| |
| if (!ctx.in.takeSExprStart("func"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto exports = inlineExports(ctx.in); |
| CHECK_ERR(exports); |
| |
| auto import = inlineImport(ctx.in); |
| CHECK_ERR(import); |
| |
| auto type = typeuse(ctx); |
| CHECK_ERR(type); |
| |
| std::optional<typename Ctx::LocalsT> localVars; |
| if (!import) { |
| if (auto l = locals(ctx)) { |
| CHECK_ERR(l); |
| localVars = *l; |
| } |
| if (!ctx.skipFunctionBody()) { |
| CHECK_ERR(instrs(ctx)); |
| ctx.setSrcLoc(ctx.in.takeAnnotations()); |
| } |
| } |
| |
| if (!ctx.skipFunctionBody() && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of function"); |
| } |
| |
| CHECK_ERR(ctx.addFunc(name, |
| *exports, |
| import.getPtr(), |
| *type, |
| localVars, |
| std::move(annotations), |
| pos)); |
| return Ok{}; |
| } |
| |
| // table ::= '(' 'table' id? ('(' 'export' name ')')* |
| // '(' 'import' mod:name nm:name ')'? index_type? tabletype ')' |
| // | '(' 'table' id? ('(' 'export' name ')')* index_type? |
| // reftype '(' 'elem' (elemexpr* | funcidx*) ')' ')' |
| template<typename Ctx> MaybeResult<> table(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("table"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto exports = inlineExports(ctx.in); |
| CHECK_ERR(exports); |
| |
| auto import = inlineImport(ctx.in); |
| CHECK_ERR(import); |
| |
| auto addressType = Type::i32; |
| if (ctx.in.takeKeyword("i64"sv)) { |
| addressType = Type::i64; |
| } else { |
| ctx.in.takeKeyword("i32"sv); |
| } |
| |
| // Reftype if we have inline elements. |
| auto type = maybeReftype(ctx); |
| CHECK_ERR(type); |
| |
| std::optional<typename Ctx::TableTypeT> ttype; |
| std::optional<typename Ctx::ElemListT> elems; |
| if (type) { |
| // We should have inline elements. |
| if (!ctx.in.takeSExprStart("elem"sv)) { |
| return ctx.in.err("expected table limits or inline elements"); |
| } |
| if (import) { |
| return ctx.in.err("imported tables cannot have inline elements"); |
| } |
| |
| auto list = ctx.makeElemList(*type); |
| bool foundElem = false; |
| while (auto elem = maybeElemexpr(ctx)) { |
| CHECK_ERR(elem); |
| ctx.appendElem(list, *elem); |
| foundElem = true; |
| } |
| |
| // If there were no elemexprs, then maybe we have funcidxs instead. |
| if (!foundElem) { |
| while (auto func = maybeFuncidx(ctx)) { |
| CHECK_ERR(func); |
| ctx.appendFuncElem(list, *func); |
| } |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of inline elems"); |
| } |
| ttype = ctx.makeTableType(addressType, ctx.getLimitsFromElems(list), *type); |
| elems = std::move(list); |
| } else { |
| auto tabtype = tabletypeContinued(ctx, addressType); |
| CHECK_ERR(tabtype); |
| ttype = *tabtype; |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of table declaration"); |
| } |
| |
| CHECK_ERR(ctx.addTable(name, *exports, import.getPtr(), *ttype, pos)); |
| |
| if (elems) { |
| CHECK_ERR(ctx.addImplicitElems(*type, std::move(*elems))); |
| } |
| |
| return Ok{}; |
| } |
| |
| // memory ::= '(' 'memory' id? ('(' 'export' name ')')* index_type? |
| // ('(' 'data' b:datastring ')' | memtype) ')' |
| // | '(' 'memory' id? ('(' 'export' name ')')* |
| // '(' 'import' mod:name nm:name ')' index_type? memtype ')' |
| template<typename Ctx> MaybeResult<> memory(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("memory"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto exports = inlineExports(ctx.in); |
| CHECK_ERR(exports); |
| |
| auto import = inlineImport(ctx.in); |
| CHECK_ERR(import); |
| |
| auto addressType = Type::i32; |
| if (ctx.in.takeKeyword("i64"sv)) { |
| addressType = Type::i64; |
| } else { |
| ctx.in.takeKeyword("i32"sv); |
| } |
| |
| std::optional<typename Ctx::MemTypeT> mtype; |
| std::optional<typename Ctx::DataStringT> data; |
| if (ctx.in.takeSExprStart("data"sv)) { |
| if (import) { |
| return ctx.in.err("imported memories cannot have inline data"); |
| } |
| auto datastr = datastring(ctx); |
| CHECK_ERR(datastr); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of inline data"); |
| } |
| mtype = |
| ctx.makeMemType(addressType, ctx.getLimitsFromData(*datastr), false); |
| data = *datastr; |
| } else { |
| auto type = memtypeContinued(ctx, addressType); |
| CHECK_ERR(type); |
| mtype = *type; |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of memory declaration"); |
| } |
| |
| CHECK_ERR(ctx.addMemory(name, *exports, import.getPtr(), *mtype, pos)); |
| |
| if (data) { |
| CHECK_ERR(ctx.addImplicitData(std::move(*data))); |
| } |
| |
| return Ok{}; |
| } |
| |
| // global ::= '(' 'global' id? ('(' 'export' name ')')* gt:globaltype e:expr ')' |
| // | '(' 'global' id? ('(' 'export' name ')')* |
| // '(' 'import' mod:name nm:name ')' gt:globaltype ')' |
| template<typename Ctx> MaybeResult<> global(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("global"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto exports = inlineExports(ctx.in); |
| CHECK_ERR(exports); |
| |
| auto import = inlineImport(ctx.in); |
| CHECK_ERR(import); |
| |
| auto type = globaltype(ctx); |
| CHECK_ERR(type); |
| |
| std::optional<typename Ctx::ExprT> exp; |
| if (!import) { |
| auto e = expr(ctx); |
| CHECK_ERR(e); |
| exp = *e; |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of global"); |
| } |
| |
| CHECK_ERR(ctx.addGlobal(name, *exports, import.getPtr(), *type, exp, pos)); |
| return Ok{}; |
| } |
| |
| // export ::= '(' 'export' nm:name exportdesc ')' |
| // exportdesc ::= '(' 'func' x:funcidx ')' |
| // | '(' 'table' x:tableidx ')' |
| // | '(' 'memory' x:memidx ')' |
| // | '(' 'global' x:globalidx ')' |
| // | '(' 'tag' x:tagidx ')' |
| template<typename Ctx> MaybeResult<> export_(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("export"sv)) { |
| return {}; |
| } |
| |
| auto name = ctx.in.takeName(); |
| if (!name) { |
| return ctx.in.err("expected export name"); |
| } |
| |
| if (ctx.in.takeSExprStart("func"sv)) { |
| auto idx = funcidx(ctx); |
| CHECK_ERR(idx); |
| CHECK_ERR(ctx.addExport(pos, *idx, *name, ExternalKind::Function)); |
| } else if (ctx.in.takeSExprStart("table"sv)) { |
| auto idx = tableidx(ctx); |
| CHECK_ERR(idx); |
| CHECK_ERR(ctx.addExport(pos, *idx, *name, ExternalKind::Table)); |
| } else if (ctx.in.takeSExprStart("memory"sv)) { |
| auto idx = memidx(ctx); |
| CHECK_ERR(idx); |
| CHECK_ERR(ctx.addExport(pos, *idx, *name, ExternalKind::Memory)); |
| } else if (ctx.in.takeSExprStart("global"sv)) { |
| auto idx = globalidx(ctx); |
| CHECK_ERR(idx); |
| CHECK_ERR(ctx.addExport(pos, *idx, *name, ExternalKind::Global)); |
| } else if (ctx.in.takeSExprStart("tag"sv)) { |
| auto idx = tagidx(ctx); |
| CHECK_ERR(idx); |
| CHECK_ERR(ctx.addExport(pos, *idx, *name, ExternalKind::Tag)); |
| } else { |
| return ctx.in.err("expected export description"); |
| } |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of export description"); |
| } |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of export"); |
| } |
| return Ok{}; |
| } |
| |
| // start ::= '(' 'start' funcidx ')' |
| template<typename Ctx> MaybeResult<> start(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("start"sv)) { |
| return {}; |
| } |
| auto func = funcidx(ctx); |
| CHECK_ERR(func); |
| |
| CHECK_ERR(ctx.addStart(*func, pos)); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of start declaration"); |
| } |
| return Ok{}; |
| } |
| |
| // elemexpr ::= '(' 'item' expr ')' | '(' instr ')' |
| template<typename Ctx> |
| MaybeResult<typename Ctx::ExprT> maybeElemexpr(Ctx& ctx) { |
| MaybeResult<typename Ctx::ExprT> result; |
| if (ctx.in.takeSExprStart("item"sv)) { |
| result = expr(ctx); |
| } else if (ctx.in.takeLParen()) { |
| // TODO: `instr` should included both folded and unfolded instrs. |
| if (auto inst = instr(ctx)) { |
| CHECK_ERR(inst); |
| } else { |
| return ctx.in.err("expected instruction"); |
| } |
| result = ctx.makeExpr(); |
| } else { |
| return {}; |
| } |
| CHECK_ERR(result); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of element expression"); |
| } |
| return result; |
| } |
| |
| // elemlist ::= reftype elemexpr* | 'func' funcidx* |
| // | funcidx* (iff the tableuse is omitted) |
| template<typename Ctx> |
| Result<typename Ctx::ElemListT> elemlist(Ctx& ctx, bool legacy) { |
| if (auto type = maybeReftype(ctx)) { |
| CHECK_ERR(type); |
| auto res = ctx.makeElemList(*type); |
| while (auto elem = maybeElemexpr(ctx)) { |
| CHECK_ERR(elem); |
| ctx.appendElem(res, *elem); |
| } |
| return res; |
| } else if (ctx.in.takeKeyword("func"sv) || legacy) { |
| auto res = ctx.makeFuncElemList(); |
| while (auto func = maybeFuncidx(ctx)) { |
| CHECK_ERR(func); |
| ctx.appendFuncElem(res, *func); |
| } |
| return res; |
| } |
| return ctx.in.err("expected element list"); |
| } |
| |
| // elem ::= '(' 'elem' id? x:tableuse? ('(' ('offset' e:expr | e:instr) ')')? |
| // elemlist ')' |
| // | '(' 'elem' id? 'declare' elemlist ')' |
| template<typename Ctx> MaybeResult<> elem(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("elem"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| bool isDeclare = false; |
| MaybeResult<typename Ctx::TableIdxT> table; |
| std::optional<typename Ctx::ExprT> offset; |
| |
| if (ctx.in.takeKeyword("declare"sv)) { |
| isDeclare = true; |
| } else { |
| table = maybeTableuse(ctx); |
| CHECK_ERR(table); |
| |
| if (ctx.in.takeSExprStart("offset")) { |
| auto off = expr(ctx); |
| CHECK_ERR(off); |
| offset = *off; |
| } else { |
| // This may be an abbreviated offset instruction or it may be the |
| // beginning of the elemlist. |
| auto beforeLParen = ctx.in.getPos(); |
| if (ctx.in.takeLParen()) { |
| if (auto inst = instr(ctx)) { |
| CHECK_ERR(inst); |
| auto off = ctx.makeExpr(); |
| CHECK_ERR(off); |
| offset = *off; |
| } else { |
| // This must be the beginning of the elemlist instead. |
| ctx.in.setPos(beforeLParen); |
| } |
| } |
| } |
| if (offset && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of offset expression"); |
| } |
| } |
| |
| // If there is no explicit tableuse, we can use the legacy elemlist format. |
| bool legacy = !table; |
| auto elems = elemlist(ctx, legacy); |
| CHECK_ERR(elems); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of element segment"); |
| } |
| |
| if (isDeclare) { |
| CHECK_ERR(ctx.addDeclareElem(name, std::move(*elems), pos)); |
| } else { |
| CHECK_ERR( |
| ctx.addElem(name, table.getPtr(), offset, std::move(*elems), pos)); |
| } |
| |
| return Ok{}; |
| } |
| |
| // datastring ::= (b:string)* => concat(b*) |
| template<typename Ctx> Result<typename Ctx::DataStringT> datastring(Ctx& ctx) { |
| auto data = ctx.makeDataString(); |
| while (auto str = ctx.in.takeString()) { |
| ctx.appendDataString(data, *str); |
| } |
| return data; |
| } |
| |
| // data ::= '(' 'data' id? b*:datastring ')' => {init b*, mode passive} |
| // | '(' 'data' id? x:memuse? ('(' 'offset' e:expr ')' | e:instr) |
| // b*:datastring ') |
| // => {init b*, mode active {memory x, offset e}} |
| template<typename Ctx> MaybeResult<> data(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("data"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto mem = maybeMemuse(ctx); |
| CHECK_ERR(mem); |
| |
| std::optional<typename Ctx::ExprT> offset; |
| if (ctx.in.takeSExprStart("offset"sv)) { |
| auto e = expr(ctx); |
| CHECK_ERR(e); |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of offset expression"); |
| } |
| offset = *e; |
| } else if (ctx.in.takeLParen()) { |
| CHECK_ERR(instr(ctx)); |
| auto offsetExpr = ctx.makeExpr(); |
| CHECK_ERR(offsetExpr); |
| offset = *offsetExpr; |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of offset instruction"); |
| } |
| } |
| |
| if (mem && !offset) { |
| return ctx.in.err("expected offset for active segment"); |
| } |
| |
| auto str = datastring(ctx); |
| CHECK_ERR(str); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of data segment"); |
| } |
| |
| CHECK_ERR(ctx.addData(name, mem.getPtr(), offset, std::move(*str), pos)); |
| |
| return Ok{}; |
| } |
| |
| // tag ::= '(' 'tag' id? ('(' 'export' name ')')* |
| // ('(' 'import' mod:name nm:name ')')? typeuse ')' |
| template<typename Ctx> MaybeResult<> tag(Ctx& ctx) { |
| auto pos = ctx.in.getPos(); |
| if (!ctx.in.takeSExprStart("tag"sv)) { |
| return {}; |
| } |
| |
| Name name; |
| if (auto id = ctx.in.takeID()) { |
| name = *id; |
| } |
| |
| auto exports = inlineExports(ctx.in); |
| CHECK_ERR(exports); |
| |
| auto import = inlineImport(ctx.in); |
| CHECK_ERR(import); |
| |
| auto type = typeuse(ctx); |
| CHECK_ERR(type); |
| |
| if (!ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of tag"); |
| } |
| |
| CHECK_ERR(ctx.addTag(name, *exports, import.getPtr(), *type, pos)); |
| return Ok{}; |
| } |
| |
| // modulefield ::= deftype |
| // | import |
| // | func |
| // | table |
| // | memory |
| // | global |
| // | export |
| // | start |
| // | elem |
| // | data |
| // | tag |
| template<typename Ctx> MaybeResult<> modulefield(Ctx& ctx) { |
| if (ctx.in.empty() || ctx.in.peekRParen()) { |
| return {}; |
| } |
| if (auto res = rectype(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = import_(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = func(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = table(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = memory(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = global(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = export_(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = start(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = elem(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = data(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| if (auto res = tag(ctx)) { |
| CHECK_ERR(res); |
| return Ok{}; |
| } |
| return ctx.in.err("unrecognized module field"); |
| } |
| |
| // module ::= '(' 'module' id? (m:modulefield)* ')' |
| // | (m:modulefield)* eof |
| template<typename Ctx> Result<> module(Ctx& ctx) { |
| bool outer = ctx.in.takeSExprStart("module"sv); |
| |
| if (outer) { |
| if (auto id = ctx.in.takeID()) { |
| ctx.wasm.name = *id; |
| } |
| } |
| |
| while (auto field = modulefield(ctx)) { |
| CHECK_ERR(field); |
| } |
| |
| if (outer && !ctx.in.takeRParen()) { |
| return ctx.in.err("expected end of module"); |
| } |
| |
| return Ok{}; |
| } |
| |
| } // namespace wasm::WATParser |
| |
| #endif // parser_parsers_h |
