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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 cmGeneratorExpressionEvaluator_h
+#define cmGeneratorExpressionEvaluator_h
+
+#include <vector>
+#include <string>
+
+#include "cmListFileCache.h"
+
+class cmTarget;
+class cmGeneratorTarget;
+
+//----------------------------------------------------------------------------
+struct cmGeneratorExpressionContext
+{
+ cmListFileBacktrace Backtrace;
+ std::set<cmTarget*> Targets;
+ cmMakefile *Makefile;
+ const char *Config;
+ cmGeneratorTarget *Target;
+ bool Quiet;
+ bool HadError;
+};
+
+struct cmGeneratorExpressionDAGChecker;
+
+//----------------------------------------------------------------------------
+struct cmGeneratorExpressionEvaluator
+{
+ cmGeneratorExpressionEvaluator() {}
+ virtual ~cmGeneratorExpressionEvaluator() {}
+
+ enum Type
+ {
+ Text,
+ Generator
+ };
+
+ virtual Type GetType() const = 0;
+
+ virtual std::string Evaluate(cmGeneratorExpressionContext *context,
+ cmGeneratorExpressionDAGChecker *) const = 0;
+
+private:
+ cmGeneratorExpressionEvaluator(const cmGeneratorExpressionEvaluator &);
+ void operator=(const cmGeneratorExpressionEvaluator &);
+};
+
+struct TextContent : public cmGeneratorExpressionEvaluator
+{
+ TextContent(const char *start, unsigned int length)
+ : Content(start), Length(length)
+ {
+
+ }
+
+ std::string Evaluate(cmGeneratorExpressionContext *,
+ cmGeneratorExpressionDAGChecker *) const
+ {
+ return std::string(this->Content, this->Length);
+ }
+
+ Type GetType() const
+ {
+ return cmGeneratorExpressionEvaluator::Text;
+ }
+
+ void Extend(unsigned int length)
+ {
+ this->Length += length;
+ }
+
+ unsigned int GetLength()
+ {
+ return this->Length;
+ }
+
+private:
+ const char *Content;
+ unsigned int Length;
+};
+
+//----------------------------------------------------------------------------
+struct GeneratorExpressionContent : public cmGeneratorExpressionEvaluator
+{
+ GeneratorExpressionContent(const char *startContent, unsigned int length);
+ void SetIdentifier(std::vector<cmGeneratorExpressionEvaluator*> identifier)
+ {
+ this->IdentifierChildren = identifier;
+ }
+
+ void SetParameters(
+ std::vector<std::vector<cmGeneratorExpressionEvaluator*> > parameters)
+ {
+ this->ParamChildren = parameters;
+ }
+
+ Type GetType() const
+ {
+ return cmGeneratorExpressionEvaluator::Generator;
+ }
+
+ std::string Evaluate(cmGeneratorExpressionContext *context,
+ cmGeneratorExpressionDAGChecker *) const;
+
+ std::string GetOriginalExpression() const;
+
+ ~GeneratorExpressionContent();
+
+private:
+ std::vector<cmGeneratorExpressionEvaluator*> IdentifierChildren;
+ std::vector<std::vector<cmGeneratorExpressionEvaluator*> > ParamChildren;
+ const char *StartContent;
+ unsigned int ContentLength;
+};
+
+#endif