Add new flow-control commands for variables and policies scopes management

Add block() and endblock() commands offering the capability to create
new scopes for variables and/or policies.

Fixes: #20171

1 files changed, 14 insertions, 0 deletions

diff --git a/Source/cmBlockCommand.h b/Source/cmBlockCommand.h
new file mode 100644
index 0000000..5fd8f42
--- /dev/null
+++ b/Source/cmBlockCommand.h
@@ -0,0 +1,14 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#pragma once
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#include <string>
+#include <vector>
+
+class cmExecutionStatus;
+
+/// Starts block() ... endblock() block
+bool cmBlockCommand(std::vector<std::string> const& args,
+                    cmExecutionStatus& status);