1 files changed, 53 insertions, 0 deletions
diff --git a/Source/cmGeneratorExpressionLexer.h b/Source/cmGeneratorExpressionLexer.h
new file mode 100644
index 0000000..bf24308
--- /dev/null
+++ b/Source/cmGeneratorExpressionLexer.h
@@ -0,0 +1,53 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmGeneratorExpressionLexer_h
+#define cmGeneratorExpressionLexer_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <stddef.h>
+#include <string>
+#include <vector>
+
+struct cmGeneratorExpressionToken
+{
+  cmGeneratorExpressionToken(unsigned type, const char* c, size_t l)
+    : TokenType(type)
+    , Content(c)
+    , Length(l)
+  {
+  }
+  enum
+  {
+    Text,
+    BeginExpression,
+    EndExpression,
+    ColonSeparator,
+    CommaSeparator
+  };
+  unsigned TokenType;
+  const char* Content;
+  size_t Length;
+};
+
+/** \class cmGeneratorExpressionLexer
+ *
+ */
+class cmGeneratorExpressionLexer
+{
+public:
+  cmGeneratorExpressionLexer();
+
+  std::vector<cmGeneratorExpressionToken> Tokenize(const std::string& input);
+
+  bool GetSawGeneratorExpression() const
+  {
+    return this->SawGeneratorExpression;
+  }
+
+private:
+  bool SawBeginExpression = false;
+  bool SawGeneratorExpression = false;
+};
+
+#endif