John Kessenich a9819921b3 Improvement to the AST traversal infrastructure.
Note:  This affects any downstream consumers of glslang's traverser.  Let me know if there are any issues.  Essentially, you will need to change the functions that were pointed to into overriding base-class members instead.  See the examples in this check in.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24740 e7fa87d3-cd2b-0410-9028-fcbf551c1848
2014-01-11 19:29:55 +00:00

119 lines
3.0 KiB
C++

//
//Copyright (C) 2002-2005 3Dlabs Inc. Ltd.
//Copyright (C) 2013 LunarG, Inc.
//
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//POSSIBILITY OF SUCH DAMAGE.
//
#include "../Include/intermediate.h"
#include "RemoveTree.h"
namespace glslang {
//
// Code to recursively delete the intermediate tree.
//
struct TRemoveTraverser : TIntermTraverser {
TRemoveTraverser() : TIntermTraverser(false, false, true, false) {}
virtual void visitSymbol(TIntermSymbol* node)
{
delete node;
}
virtual bool visitBinary(TVisit /* visit*/ , TIntermBinary* node)
{
delete node;
return true;
}
virtual bool visitUnary(TVisit /* visit */, TIntermUnary* node)
{
delete node;
return true;
}
virtual bool visitAggregate(TVisit /* visit*/ , TIntermAggregate* node)
{
delete node;
return true;
}
virtual bool visitSelection(TVisit /* visit*/ , TIntermSelection* node)
{
delete node;
return true;
}
virtual bool visitSwitch(TVisit /* visit*/ , TIntermSwitch* node)
{
delete node;
return true;
}
virtual void visitConstantUnion(TIntermConstantUnion* node)
{
delete node;
}
virtual bool visitLoop(TVisit /* visit*/ , TIntermLoop* node)
{
delete node;
return true;
}
virtual bool visitBranch(TVisit /* visit*/ , TIntermBranch* node)
{
delete node;
return true;
}
};
//
// Entry point.
//
void RemoveAllTreeNodes(TIntermNode* root)
{
TRemoveTraverser it;
root->traverse(&it);
}
} // end namespace glslang