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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// 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 COMPILER_TRANSLATOR_VALIDATESWITCH_H_
#define COMPILER_TRANSLATOR_VALIDATESWITCH_H_
#include "intermediate.h"
#include <set>
class TParseContext;
class ValidateSwitch : public TIntermTraverser
{
public:
// Check for errors and output messages any remaining errors on the context.
// Returns true if there are no errors.
static bool validate(TBasicType switchType, TParseContext *context,
TIntermAggregate *statementList, const TSourceLoc &loc);
void visitSymbol(TIntermSymbol *) override;
void visitConstantUnion(TIntermConstantUnion *) override;
bool visitBinary(Visit, TIntermBinary *) override;
bool visitUnary(Visit, TIntermUnary *) override;
bool visitSelection(Visit visit, TIntermSelection *) override;
bool visitSwitch(Visit, TIntermSwitch *) override;
bool visitCase(Visit, TIntermCase *) override;
bool visitAggregate(Visit, TIntermAggregate *) override;
bool visitLoop(Visit visit, TIntermLoop *) override;
bool visitBranch(Visit, TIntermBranch *) override;
private:
ValidateSwitch(TBasicType switchType, TParseContext *context);
bool validateInternal(const TSourceLoc &loc);
TBasicType mSwitchType;
TParseContext *mContext;
bool mCaseTypeMismatch;
bool mFirstCaseFound;
bool mStatementBeforeCase;
bool mLastStatementWasCase;
int mControlFlowDepth;
bool mCaseInsideControlFlow;
int mDefaultCount;
std::set<int> mCasesSigned;
std::set<unsigned int> mCasesUnsigned;
bool mDuplicateCases;
};
#endif // COMPILER_TRANSLATOR_VALIDATESWITCH_H_