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//
// Copyright (c) 2002-2013 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.
//
// NodeSearch.h: Utilities for searching translator node graphs
//
#ifndef COMPILER_TRANSLATOR_NODESEARCH_H_
#define COMPILER_TRANSLATOR_NODESEARCH_H_
#include "compiler/translator/IntermNode.h"
namespace sh
{
template <class Parent>
class NodeSearchTraverser : public TIntermTraverser
{
public:
NodeSearchTraverser()
: TIntermTraverser(true, false, false),
mFound(false)
{}
bool found() const { return mFound; }
static bool search(TIntermNode *node)
{
Parent searchTraverser;
node->traverse(&searchTraverser);
return searchTraverser.found();
}
protected:
bool mFound;
};
class FindDiscard : public NodeSearchTraverser<FindDiscard>
{
public:
virtual bool visitBranch(Visit visit, TIntermBranch *node)
{
switch (node->getFlowOp())
{
case EOpKill:
mFound = true;
break;
default: break;
}
return !mFound;
}
};
}
#endif // COMPILER_TRANSLATOR_NODESEARCH_H_
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