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Diffstat (limited to 'third_party/wasm2c/src/expr-visitor.h')
| -rw-r--r-- | third_party/wasm2c/src/expr-visitor.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/third_party/wasm2c/src/expr-visitor.h b/third_party/wasm2c/src/expr-visitor.h new file mode 100644 index 0000000000..ab7dc9e418 --- /dev/null +++ b/third_party/wasm2c/src/expr-visitor.h @@ -0,0 +1,220 @@ +/* + * Copyright 2017 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 WABT_EXPR_VISITOR_H_ +#define WABT_EXPR_VISITOR_H_ + +#include "src/common.h" +#include "src/ir.h" + +namespace wabt { + +class ExprVisitor { + public: + class Delegate; + class DelegateNop; + + explicit ExprVisitor(Delegate* delegate); + + Result VisitExpr(Expr*); + Result VisitExprList(ExprList&); + Result VisitFunc(Func*); + + private: + enum class State { + Default, + Block, + IfTrue, + IfFalse, + Loop, + Try, + Catch, + }; + + Result HandleDefaultState(Expr*); + void PushDefault(Expr*); + void PopDefault(); + void PushExprlist(State state, Expr*, ExprList&); + void PopExprlist(); + void PushCatch(Expr*, Index catch_index, ExprList&); + void PopCatch(); + + Delegate* delegate_; + + // Use parallel arrays instead of array of structs so we can avoid allocating + // unneeded objects. ExprList::iterator has no default constructor, so it + // must only be allocated for states that use it. + std::vector<State> state_stack_; + std::vector<Expr*> expr_stack_; + std::vector<ExprList::iterator> expr_iter_stack_; + std::vector<Index> catch_index_stack_; +}; + +class ExprVisitor::Delegate { + public: + virtual ~Delegate() {} + + virtual Result OnBinaryExpr(BinaryExpr*) = 0; + virtual Result BeginBlockExpr(BlockExpr*) = 0; + virtual Result EndBlockExpr(BlockExpr*) = 0; + virtual Result OnBrExpr(BrExpr*) = 0; + virtual Result OnBrIfExpr(BrIfExpr*) = 0; + virtual Result OnBrTableExpr(BrTableExpr*) = 0; + virtual Result OnCallExpr(CallExpr*) = 0; + virtual Result OnCallIndirectExpr(CallIndirectExpr*) = 0; + virtual Result OnCallRefExpr(CallRefExpr*) = 0; + virtual Result OnCompareExpr(CompareExpr*) = 0; + virtual Result OnConstExpr(ConstExpr*) = 0; + virtual Result OnConvertExpr(ConvertExpr*) = 0; + virtual Result OnDropExpr(DropExpr*) = 0; + virtual Result OnGlobalGetExpr(GlobalGetExpr*) = 0; + virtual Result OnGlobalSetExpr(GlobalSetExpr*) = 0; + virtual Result BeginIfExpr(IfExpr*) = 0; + virtual Result AfterIfTrueExpr(IfExpr*) = 0; + virtual Result EndIfExpr(IfExpr*) = 0; + virtual Result OnLoadExpr(LoadExpr*) = 0; + virtual Result OnLocalGetExpr(LocalGetExpr*) = 0; + virtual Result OnLocalSetExpr(LocalSetExpr*) = 0; + virtual Result OnLocalTeeExpr(LocalTeeExpr*) = 0; + virtual Result BeginLoopExpr(LoopExpr*) = 0; + virtual Result EndLoopExpr(LoopExpr*) = 0; + virtual Result OnMemoryCopyExpr(MemoryCopyExpr*) = 0; + virtual Result OnDataDropExpr(DataDropExpr*) = 0; + virtual Result OnMemoryFillExpr(MemoryFillExpr*) = 0; + virtual Result OnMemoryGrowExpr(MemoryGrowExpr*) = 0; + virtual Result OnMemoryInitExpr(MemoryInitExpr*) = 0; + virtual Result OnMemorySizeExpr(MemorySizeExpr*) = 0; + virtual Result OnTableCopyExpr(TableCopyExpr*) = 0; + virtual Result OnElemDropExpr(ElemDropExpr*) = 0; + virtual Result OnTableInitExpr(TableInitExpr*) = 0; + virtual Result OnTableGetExpr(TableGetExpr*) = 0; + virtual Result OnTableSetExpr(TableSetExpr*) = 0; + virtual Result OnTableGrowExpr(TableGrowExpr*) = 0; + virtual Result OnTableSizeExpr(TableSizeExpr*) = 0; + virtual Result OnTableFillExpr(TableFillExpr*) = 0; + virtual Result OnRefFuncExpr(RefFuncExpr*) = 0; + virtual Result OnRefNullExpr(RefNullExpr*) = 0; + virtual Result OnRefIsNullExpr(RefIsNullExpr*) = 0; + virtual Result OnNopExpr(NopExpr*) = 0; + virtual Result OnReturnExpr(ReturnExpr*) = 0; + virtual Result OnReturnCallExpr(ReturnCallExpr*) = 0; + virtual Result OnReturnCallIndirectExpr(ReturnCallIndirectExpr*) = 0; + virtual Result OnSelectExpr(SelectExpr*) = 0; + virtual Result OnStoreExpr(StoreExpr*) = 0; + virtual Result OnUnaryExpr(UnaryExpr*) = 0; + virtual Result OnUnreachableExpr(UnreachableExpr*) = 0; + virtual Result BeginTryExpr(TryExpr*) = 0; + virtual Result OnCatchExpr(TryExpr*, Catch*) = 0; + virtual Result OnDelegateExpr(TryExpr*) = 0; + virtual Result EndTryExpr(TryExpr*) = 0; + virtual Result OnThrowExpr(ThrowExpr*) = 0; + virtual Result OnRethrowExpr(RethrowExpr*) = 0; + virtual Result OnAtomicWaitExpr(AtomicWaitExpr*) = 0; + virtual Result OnAtomicFenceExpr(AtomicFenceExpr*) = 0; + virtual Result OnAtomicNotifyExpr(AtomicNotifyExpr*) = 0; + virtual Result OnAtomicLoadExpr(AtomicLoadExpr*) = 0; + virtual Result OnAtomicStoreExpr(AtomicStoreExpr*) = 0; + virtual Result OnAtomicRmwExpr(AtomicRmwExpr*) = 0; + virtual Result OnAtomicRmwCmpxchgExpr(AtomicRmwCmpxchgExpr*) = 0; + virtual Result OnTernaryExpr(TernaryExpr*) = 0; + virtual Result OnSimdLaneOpExpr(SimdLaneOpExpr*) = 0; + virtual Result OnSimdLoadLaneExpr(SimdLoadLaneExpr*) = 0; + virtual Result OnSimdStoreLaneExpr(SimdStoreLaneExpr*) = 0; + virtual Result OnSimdShuffleOpExpr(SimdShuffleOpExpr*) = 0; + virtual Result OnLoadSplatExpr(LoadSplatExpr*) = 0; + virtual Result OnLoadZeroExpr(LoadZeroExpr*) = 0; +}; + +class ExprVisitor::DelegateNop : public ExprVisitor::Delegate { + public: + Result OnBinaryExpr(BinaryExpr*) override { return Result::Ok; } + Result BeginBlockExpr(BlockExpr*) override { return Result::Ok; } + Result EndBlockExpr(BlockExpr*) override { return Result::Ok; } + Result OnBrExpr(BrExpr*) override { return Result::Ok; } + Result OnBrIfExpr(BrIfExpr*) override { return Result::Ok; } + Result OnBrTableExpr(BrTableExpr*) override { return Result::Ok; } + Result OnCallExpr(CallExpr*) override { return Result::Ok; } + Result OnCallIndirectExpr(CallIndirectExpr*) override { return Result::Ok; } + Result OnCallRefExpr(CallRefExpr*) override { return Result::Ok; } + Result OnCompareExpr(CompareExpr*) override { return Result::Ok; } + Result OnConstExpr(ConstExpr*) override { return Result::Ok; } + Result OnConvertExpr(ConvertExpr*) override { return Result::Ok; } + Result OnDropExpr(DropExpr*) override { return Result::Ok; } + Result OnGlobalGetExpr(GlobalGetExpr*) override { return Result::Ok; } + Result OnGlobalSetExpr(GlobalSetExpr*) override { return Result::Ok; } + Result BeginIfExpr(IfExpr*) override { return Result::Ok; } + Result AfterIfTrueExpr(IfExpr*) override { return Result::Ok; } + Result EndIfExpr(IfExpr*) override { return Result::Ok; } + Result OnLoadExpr(LoadExpr*) override { return Result::Ok; } + Result OnLocalGetExpr(LocalGetExpr*) override { return Result::Ok; } + Result OnLocalSetExpr(LocalSetExpr*) override { return Result::Ok; } + Result OnLocalTeeExpr(LocalTeeExpr*) override { return Result::Ok; } + Result BeginLoopExpr(LoopExpr*) override { return Result::Ok; } + Result EndLoopExpr(LoopExpr*) override { return Result::Ok; } + Result OnMemoryCopyExpr(MemoryCopyExpr*) override { return Result::Ok; } + Result OnDataDropExpr(DataDropExpr*) override { return Result::Ok; } + Result OnMemoryFillExpr(MemoryFillExpr*) override { return Result::Ok; } + Result OnMemoryGrowExpr(MemoryGrowExpr*) override { return Result::Ok; } + Result OnMemoryInitExpr(MemoryInitExpr*) override { return Result::Ok; } + Result OnMemorySizeExpr(MemorySizeExpr*) override { return Result::Ok; } + Result OnTableCopyExpr(TableCopyExpr*) override { return Result::Ok; } + Result OnElemDropExpr(ElemDropExpr*) override { return Result::Ok; } + Result OnTableInitExpr(TableInitExpr*) override { return Result::Ok; } + Result OnTableGetExpr(TableGetExpr*) override { return Result::Ok; } + Result OnTableSetExpr(TableSetExpr*) override { return Result::Ok; } + Result OnTableGrowExpr(TableGrowExpr*) override { return Result::Ok; } + Result OnTableSizeExpr(TableSizeExpr*) override { return Result::Ok; } + Result OnTableFillExpr(TableFillExpr*) override { return Result::Ok; } + Result OnRefFuncExpr(RefFuncExpr*) override { return Result::Ok; } + Result OnRefNullExpr(RefNullExpr*) override { return Result::Ok; } + Result OnRefIsNullExpr(RefIsNullExpr*) override { return Result::Ok; } + Result OnNopExpr(NopExpr*) override { return Result::Ok; } + Result OnReturnExpr(ReturnExpr*) override { return Result::Ok; } + Result OnReturnCallExpr(ReturnCallExpr*) override { return Result::Ok; } + Result OnReturnCallIndirectExpr(ReturnCallIndirectExpr*) override { + return Result::Ok; + } + Result OnSelectExpr(SelectExpr*) override { return Result::Ok; } + Result OnStoreExpr(StoreExpr*) override { return Result::Ok; } + Result OnUnaryExpr(UnaryExpr*) override { return Result::Ok; } + Result OnUnreachableExpr(UnreachableExpr*) override { return Result::Ok; } + Result BeginTryExpr(TryExpr*) override { return Result::Ok; } + Result OnCatchExpr(TryExpr*, Catch*) override { return Result::Ok; } + Result OnDelegateExpr(TryExpr*) override { return Result::Ok; } + Result EndTryExpr(TryExpr*) override { return Result::Ok; } + Result OnThrowExpr(ThrowExpr*) override { return Result::Ok; } + Result OnRethrowExpr(RethrowExpr*) override { return Result::Ok; } + Result OnAtomicWaitExpr(AtomicWaitExpr*) override { return Result::Ok; } + Result OnAtomicFenceExpr(AtomicFenceExpr*) override { return Result::Ok; } + Result OnAtomicNotifyExpr(AtomicNotifyExpr*) override { return Result::Ok; } + Result OnAtomicLoadExpr(AtomicLoadExpr*) override { return Result::Ok; } + Result OnAtomicStoreExpr(AtomicStoreExpr*) override { return Result::Ok; } + Result OnAtomicRmwExpr(AtomicRmwExpr*) override { return Result::Ok; } + Result OnAtomicRmwCmpxchgExpr(AtomicRmwCmpxchgExpr*) override { + return Result::Ok; + } + Result OnTernaryExpr(TernaryExpr*) override { return Result::Ok; } + Result OnSimdLaneOpExpr(SimdLaneOpExpr*) override { return Result::Ok; } + Result OnSimdLoadLaneExpr(SimdLoadLaneExpr*) override { return Result::Ok; } + Result OnSimdStoreLaneExpr(SimdStoreLaneExpr*) override { return Result::Ok; } + Result OnSimdShuffleOpExpr(SimdShuffleOpExpr*) override { return Result::Ok; } + Result OnLoadSplatExpr(LoadSplatExpr*) override { return Result::Ok; } + Result OnLoadZeroExpr(LoadZeroExpr*) override { return Result::Ok; } +}; + +} // namespace wabt + +#endif // WABT_EXPR_VISITOR_H_ |