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/*
* 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:
Delegate* delegate_;
};
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 OnCompareExpr(CompareExpr*) = 0;
virtual Result OnConstExpr(ConstExpr*) = 0;
virtual Result OnConvertExpr(ConvertExpr*) = 0;
virtual Result OnCurrentMemoryExpr(CurrentMemoryExpr*) = 0;
virtual Result OnDropExpr(DropExpr*) = 0;
virtual Result OnGetGlobalExpr(GetGlobalExpr*) = 0;
virtual Result OnGetLocalExpr(GetLocalExpr*) = 0;
virtual Result OnGrowMemoryExpr(GrowMemoryExpr*) = 0;
virtual Result BeginIfExpr(IfExpr*) = 0;
virtual Result AfterIfTrueExpr(IfExpr*) = 0;
virtual Result EndIfExpr(IfExpr*) = 0;
virtual Result OnLoadExpr(LoadExpr*) = 0;
virtual Result BeginLoopExpr(LoopExpr*) = 0;
virtual Result EndLoopExpr(LoopExpr*) = 0;
virtual Result OnNopExpr(NopExpr*) = 0;
virtual Result OnReturnExpr(ReturnExpr*) = 0;
virtual Result OnSelectExpr(SelectExpr*) = 0;
virtual Result OnSetGlobalExpr(SetGlobalExpr*) = 0;
virtual Result OnSetLocalExpr(SetLocalExpr*) = 0;
virtual Result OnStoreExpr(StoreExpr*) = 0;
virtual Result OnTeeLocalExpr(TeeLocalExpr*) = 0;
virtual Result OnUnaryExpr(UnaryExpr*) = 0;
virtual Result OnUnreachableExpr(UnreachableExpr*) = 0;
virtual Result BeginTryExpr(TryExpr*) = 0;
virtual Result EndTryExpr(TryExpr*) = 0;
virtual Result OnCatchExpr(TryExpr*, Catch*) = 0;
virtual Result OnThrowExpr(ThrowExpr*) = 0;
virtual Result OnRethrowExpr(RethrowExpr*) = 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 OnCompareExpr(CompareExpr*) override { return Result::Ok; }
Result OnConstExpr(ConstExpr*) override { return Result::Ok; }
Result OnConvertExpr(ConvertExpr*) override { return Result::Ok; }
Result OnCurrentMemoryExpr(CurrentMemoryExpr*) override { return Result::Ok; }
Result OnDropExpr(DropExpr*) override { return Result::Ok; }
Result OnGetGlobalExpr(GetGlobalExpr*) override { return Result::Ok; }
Result OnGetLocalExpr(GetLocalExpr*) override { return Result::Ok; }
Result OnGrowMemoryExpr(GrowMemoryExpr*) 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 BeginLoopExpr(LoopExpr*) override { return Result::Ok; }
Result EndLoopExpr(LoopExpr*) override { return Result::Ok; }
Result OnNopExpr(NopExpr*) override { return Result::Ok; }
Result OnReturnExpr(ReturnExpr*) override { return Result::Ok; }
Result OnSelectExpr(SelectExpr*) override { return Result::Ok; }
Result OnSetGlobalExpr(SetGlobalExpr*) override { return Result::Ok; }
Result OnSetLocalExpr(SetLocalExpr*) override { return Result::Ok; }
Result OnStoreExpr(StoreExpr*) override { return Result::Ok; }
Result OnTeeLocalExpr(TeeLocalExpr*) 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 EndTryExpr(TryExpr*) override { return Result::Ok; }
Result OnCatchExpr(TryExpr*, Catch*) override { return Result::Ok; }
Result OnThrowExpr(ThrowExpr*) override { return Result::Ok; }
Result OnRethrowExpr(RethrowExpr*) override { return Result::Ok; }
};
} // namespace wabt
#endif // WABT_EXPR_VISITOR_H_
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