Line data    Source code

       1             : //
       2             : // Copyright (c) 2002-2015 The ANGLE Project Authors. All rights reserved.
       3             : // Use of this source code is governed by a BSD-style license that can be
       4             : // found in the LICENSE file.
       5             : //
       6             : 
       7             : #ifndef COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
       8             : #define COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_
       9             : 
      10             : #include "compiler/translator/IntermNode.h"
      11             : 
      12             : namespace sh
      13             : {
      14             : 
      15           0 : class RemoveSwitchFallThrough : public TIntermTraverser
      16             : {
      17             :   public:
      18             :     // When given a statementList from a switch AST node, return an updated
      19             :     // statementList that has fall-through removed.
      20             :     static TIntermBlock *removeFallThrough(TIntermBlock *statementList);
      21             : 
      22             :   private:
      23             :     RemoveSwitchFallThrough(TIntermBlock *statementList);
      24             : 
      25             :     void visitSymbol(TIntermSymbol *node) override;
      26             :     void visitConstantUnion(TIntermConstantUnion *node) override;
      27             :     bool visitBinary(Visit, TIntermBinary *node) override;
      28             :     bool visitUnary(Visit, TIntermUnary *node) override;
      29             :     bool visitTernary(Visit visit, TIntermTernary *node) override;
      30             :     bool visitIfElse(Visit visit, TIntermIfElse *node) override;
      31             :     bool visitSwitch(Visit, TIntermSwitch *node) override;
      32             :     bool visitCase(Visit, TIntermCase *node) override;
      33             :     bool visitAggregate(Visit, TIntermAggregate *node) override;
      34             :     bool visitBlock(Visit, TIntermBlock *node) override;
      35             :     bool visitLoop(Visit, TIntermLoop *node) override;
      36             :     bool visitBranch(Visit, TIntermBranch *node) override;
      37             : 
      38             :     void outputSequence(TIntermSequence *sequence, size_t startIndex);
      39             :     void handlePreviousCase();
      40             : 
      41             :     TIntermBlock *mStatementList;
      42             :     TIntermBlock *mStatementListOut;
      43             :     bool mLastStatementWasBreak;
      44             :     TIntermBlock *mPreviousCase;
      45             :     std::vector<TIntermBlock *> mCasesSharingBreak;
      46             : };
      47             : 
      48             : }  // namespace sh
      49             : 
      50             : #endif // COMPILER_TRANSLATOR_REMOVESWITCHFALLTHROUGH_H_