cmRulePlaceholderExpander: add base class for placeholder expansion reuse

1 files changed, 19 insertions, 0 deletions

diff --git a/Source/cmPlaceholderExpander.h b/Source/cmPlaceholderExpander.h
new file mode 100644
index 0000000..24225cc
--- /dev/null
+++ b/Source/cmPlaceholderExpander.h
@@ -0,0 +1,19 @@
+/* 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>
+
+class cmPlaceholderExpander
+{
+public:
+  virtual ~cmPlaceholderExpander() = default;
+
+  std::string& ExpandVariables(std::string& string);
+
+protected:
+  virtual std::string ExpandVariable(std::string const& variable) = 0;
+};