kc3-lang/angle/src/compiler/translator/tree_util/ReplaceVariable.cpp

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• Hash : b980c563
  Author :
  Date : 2018-11-27T11:34:27
  

  Reformat all cpp and h files.
  
  This applies git cl format --full to all ANGLE sources.
  
  Bug: angleproject:2986
  Change-Id: Ib504e618c1589332a37e97696cdc3515d739308f
  Reviewed-on: https://chromium-review.googlesource.com/c/1351367
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/compiler/translator/tree_util/ReplaceVariable.cpp

• //
  // Copyright (c) 2018 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  // ReplaceVariable.cpp: Replace all references to a specific variable in the AST with references to
  // another variable.
  
  #include "compiler/translator/tree_util/ReplaceVariable.h"
  
  #include "compiler/translator/IntermNode.h"
  #include "compiler/translator/tree_util/IntermTraverse.h"
  
  namespace sh
  {
  
  namespace
  {
  
  class ReplaceVariableTraverser : public TIntermTraverser
  {
    public:
      ReplaceVariableTraverser(const TVariable *toBeReplaced, const TIntermTyped *replacement)
          : TIntermTraverser(true, false, false),
            mToBeReplaced(toBeReplaced),
            mReplacement(replacement)
      {}
  
      void visitSymbol(TIntermSymbol *node) override
      {
          if (&node->variable() == mToBeReplaced)
          {
              queueReplacement(mReplacement->deepCopy(), OriginalNode::IS_DROPPED);
          }
      }
  
    private:
      const TVariable *const mToBeReplaced;
      const TIntermTyped *const mReplacement;
  };
  
  }  // anonymous namespace
  
  // Replaces every occurrence of a variable with another variable.
  void ReplaceVariable(TIntermBlock *root,
                       const TVariable *toBeReplaced,
                       const TVariable *replacement)
  {
      ReplaceVariableTraverser traverser(toBeReplaced, new TIntermSymbol(replacement));
      root->traverse(&traverser);
      traverser.updateTree();
  }
  
  // Replaces every occurrence of a variable with a TIntermNode.
  void ReplaceVariableWithTyped(TIntermBlock *root,
                                const TVariable *toBeReplaced,
                                const TIntermTyped *replacement)
  {
      ReplaceVariableTraverser traverser(toBeReplaced, replacement);
      root->traverse(&traverser);
      traverser.updateTree();
  }
  
  }  // namespace sh
  

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