1 files changed, 65 insertions, 0 deletions
diff --git a/Source/cmIfCommand.h b/Source/cmIfCommand.h
new file mode 100644
index 0000000..d34ed02
--- /dev/null
+++ b/Source/cmIfCommand.h
@@ -0,0 +1,65 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cmIfCommand_h
+#define cmIfCommand_h
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <string>
+#include <vector>
+
+#include "cmCommand.h"
+#include "cmFunctionBlocker.h"
+#include "cmListFileCache.h"
+
+class cmExecutionStatus;
+class cmExpandedCommandArgument;
+class cmMakefile;
+
+class cmIfFunctionBlocker : public cmFunctionBlocker
+{
+public:
+  bool IsFunctionBlocked(const cmListFileFunction& lff, cmMakefile& mf,
+                         cmExecutionStatus&) override;
+  bool ShouldRemove(const cmListFileFunction& lff, cmMakefile& mf) override;
+
+  std::vector<cmListFileArgument> Args;
+  std::vector<cmListFileFunction> Functions;
+  bool IsBlocking;
+  bool HasRun = false;
+  bool ElseSeen = false;
+  unsigned int ScopeDepth = 0;
+};
+
+/// Starts an if block
+class cmIfCommand : public cmCommand
+{
+public:
+  /**
+   * This is a virtual constructor for the command.
+   */
+  cmCommand* Clone() override { return new cmIfCommand; }
+
+  /**
+   * This overrides the default InvokeInitialPass implementation.
+   * It records the arguments before expansion.
+   */
+  bool InvokeInitialPass(const std::vector<cmListFileArgument>& args,
+                         cmExecutionStatus&) override;
+
+  /**
+   * This is called when the command is first encountered in
+   * the CMakeLists.txt file.
+   */
+  bool InitialPass(std::vector<std::string> const&,
+                   cmExecutionStatus&) override
+  {
+    return false;
+  }
+
+  // Filter the given variable definition based on policy CMP0054.
+  static const char* GetDefinitionIfUnquoted(
+    const cmMakefile* mf, cmExpandedCommandArgument const& argument);
+};
+
+#endif