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//
// Copyright 2017 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.
//
// FindMain.cpp: Find the main() function definition in a given AST.
#include "compiler/translator/tree_util/FindMain.h"
#include "compiler/translator/IntermNode.h"
#include "compiler/translator/Symbol.h"
namespace sh
{
size_t FindMainIndex(TIntermBlock *root)
{
const TIntermSequence &sequence = *root->getSequence();
for (size_t index = 0; index < sequence.size(); ++index)
{
TIntermNode *node = sequence[index];
TIntermFunctionDefinition *nodeFunction = node->getAsFunctionDefinition();
if (nodeFunction != nullptr && nodeFunction->getFunction()->isMain())
{
return index;
}
}
return std::numeric_limits<size_t>::max();
}
TIntermFunctionDefinition *FindMain(TIntermBlock *root)
{
for (TIntermNode *node : *root->getSequence())
{
TIntermFunctionDefinition *nodeFunction = node->getAsFunctionDefinition();
if (nodeFunction != nullptr && nodeFunction->getFunction()->isMain())
{
return nodeFunction;
}
}
return nullptr;
}
TIntermBlock *FindMainBody(TIntermBlock *root)
{
TIntermFunctionDefinition *main = FindMain(root);
ASSERT(main != nullptr);
TIntermBlock *mainBody = main->getBody();
ASSERT(mainBody != nullptr);
return mainBody;
}
} // namespace sh
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