1 files changed, 58 insertions, 0 deletions
diff --git a/Source/cmGeneratorExpressionLexer.h b/Source/cmGeneratorExpressionLexer.h
new file mode 100644
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--- /dev/null
+++ b/Source/cmGeneratorExpressionLexer.h
@@ -0,0 +1,58 @@
+/*============================================================================
+  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 cmGeneratorExpressionLexer_h
+#define cmGeneratorExpressionLexer_h
+
+#include "cmStandardIncludes.h"
+
+#include <vector>
+
+//----------------------------------------------------------------------------
+struct cmGeneratorExpressionToken
+{
+  cmGeneratorExpressionToken(unsigned type, const char *c, unsigned l)
+    : TokenType(type), Content(c), Length(l)
+  {
+  }
+  enum {
+    Text,
+    BeginExpression,
+    EndExpression,
+    ColonSeparator,
+    CommaSeparator
+  };
+  unsigned TokenType;
+  const char *Content;
+  unsigned Length;
+};
+
+/** \class cmGeneratorExpressionLexer
+ *
+ */
+class cmGeneratorExpressionLexer
+{
+public:
+  cmGeneratorExpressionLexer();
+
+  std::vector<cmGeneratorExpressionToken> Tokenize(const char *input);
+
+  bool GetSawGeneratorExpression() const
+  {
+    return this->SawGeneratorExpression;
+  }
+
+private:
+  bool SawBeginExpression;
+  bool SawGeneratorExpression;
+};
+
+#endif