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/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2012 Stephen Kelly <steveire@gmail.com>
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#ifndef cmGeneratorExpressionDAGChecker_h
#define cmGeneratorExpressionDAGChecker_h
#include "cmStandardIncludes.h"
#include "cmGeneratorExpressionEvaluator.h"
//----------------------------------------------------------------------------
struct cmGeneratorExpressionDAGChecker
{
cmGeneratorExpressionDAGChecker(const cmListFileBacktrace &backtrace,
const std::string &target,
const std::string &property,
const GeneratorExpressionContent *content,
cmGeneratorExpressionDAGChecker *parent);
enum Result {
DAG,
SELF_REFERENCE,
CYCLIC_REFERENCE
};
Result check() const;
void reportError(cmGeneratorExpressionContext *context,
const std::string &expr);
private:
Result checkGraph() const;
private:
const cmGeneratorExpressionDAGChecker * const Parent;
const std::string Target;
const std::string Property;
const GeneratorExpressionContent * const Content;
const cmListFileBacktrace Backtrace;
Result CheckResult;
};
#endif