include_guard: implement new command

1 files changed, 37 insertions, 0 deletions

diff --git a/Source/cmIncludeGuardCommand.h b/Source/cmIncludeGuardCommand.h
new file mode 100644
index 0000000..140c04f
--- /dev/null
+++ b/Source/cmIncludeGuardCommand.h
@@ -0,0 +1,37 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmIncludeGuardCommand_h
+#define cmIncludeGuardCommand_h
+
+#include "cmConfigure.h"
+
+#include <string>
+#include <vector>
+
+#include "cmCommand.h"
+
+class cmExecutionStatus;
+
+/** \class cmIncludeGuardCommand
+ * \brief cmIncludeGuardCommand identical to C++ #pragma_once command
+ * Can work in 3 modes: GLOBAL (works on global properties),
+ * DIRECTORY(use directory property), VARIABLE(unnamed overload without
+ * arguments) define an ordinary variable to be used as include guard checker
+ */
+class cmIncludeGuardCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  cmCommand* Clone() CM_OVERRIDE { return new cmIncludeGuardCommand; }
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  bool InitialPass(std::vector<std::string> const& args,
+                   cmExecutionStatus& status) CM_OVERRIDE;
+};
+
+#endif