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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);
+
+ bool check() const;
+
+ void reportError(cmGeneratorExpressionContext *context,
+ const std::string &expr);
+private:
+ bool isDAG() const;
+
+private:
+ const cmGeneratorExpressionDAGChecker * const Parent;
+ const std::string Target;
+ const std::string Property;
+ const GeneratorExpressionContent * const Content;
+ const cmListFileBacktrace Backtrace;
+ bool IsDAG;
+};
+
+#endif