1 files changed, 118 insertions, 0 deletions
diff --git a/Source/cmGeneratorExpressionEvaluator.h b/Source/cmGeneratorExpressionEvaluator.h
new file mode 100644
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--- /dev/null
+++ b/Source/cmGeneratorExpressionEvaluator.h
@@ -0,0 +1,118 @@
+/*============================================================================
+  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>
+
+//----------------------------------------------------------------------------
+struct cmGeneratorExpressionContext
+{
+  cmListFileBacktrace Backtrace;
+  std::set<cmTarget*> Targets;
+  cmMakefile *Makefile;
+  const char *Config;
+  cmTarget *Target;
+  bool Quiet;
+  bool HadError;
+};
+
+//----------------------------------------------------------------------------
+struct cmGeneratorExpressionEvaluator
+{
+  cmGeneratorExpressionEvaluator() {}
+  virtual ~cmGeneratorExpressionEvaluator() {}
+
+  enum Type
+  {
+    Text,
+    Generator
+  };
+
+  virtual Type GetType() const = 0;
+
+  virtual std::string Evaluate(cmGeneratorExpressionContext *context
+                              ) 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 *) 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) const;
+
+  std::string GetOriginalExpression() const;
+
+  ~GeneratorExpressionContent();
+
+private:
+  std::vector<cmGeneratorExpressionEvaluator*> IdentifierChildren;
+  std::vector<std::vector<cmGeneratorExpressionEvaluator*> > ParamChildren;
+  const char *StartContent;
+  unsigned int ContentLength;
+};
+
+#endif