Ninja: add properties for Swift partial module and doc

When building a swift object, we emit a partial swiftmodule and swiftdoc
that must be merged at the end.  However, in order to do that, we need
to enumerate the swiftmodules and swiftdocs.  As a result, the path must
be known to CMake.  Rather than hardcoding the rules into CMake, create
a source property that we can query.  This will allow us to create a
final placeholder to emit the merge rule.

Issue: #18800

1 files changed, 2 insertions, 0 deletions

diff --git a/Source/cmRulePlaceholderExpander.h b/Source/cmRulePlaceholderExpander.h
index 930eafd..93d0577 100644
--- a/Source/cmRulePlaceholderExpander.h
+++ b/Source/cmRulePlaceholderExpander.h
@@ -61,6 +61,8 @@ public:
     const char* SwiftAuxiliarySources;
     const char* SwiftModuleName;
     const char* SwiftLibraryName;
+    const char* SwiftPartialModule;
+    const char* SwiftPartialDoc;
   };
 
   // Expand rule variables in CMake of the type found in language rules