cmSourceFileLocation: allow skipping ambiguous extensions

The ambiguous extension logic is an old behavior that ends up taking
lots of extra compute cycles to execute. This is triggered by various
CMake codepaths which pass extension-less paths down when CMake actually
knows that they are not ambiguous. These codepaths will be indicated in
upcoming changes.

Various APIs have gained a cmSourceFileLocationKind parameter, but they
are all optional and default to the existing behavior.

1 files changed, 10 insertions, 5 deletions

diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index c92424b..f06e2ff 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -20,6 +20,7 @@
 #include "cmListFileCache.h"
 #include "cmNewLineStyle.h"
 #include "cmPolicies.h"
+#include "cmSourceFileLocationKind.h"
 #include "cmStateSnapshot.h"
 #include "cmStateTypes.h"
 #include "cmTarget.h"
@@ -387,22 +388,26 @@ public:
   /** Get a cmSourceFile pointer for a given source name, if the name is
    *  not found, then a null pointer is returned.
    */
-  cmSourceFile* GetSource(const std::string& sourceName) const;
+  cmSourceFile* GetSource(
+    const std::string& sourceName,
+    cmSourceFileLocationKind kind = cmSourceFileLocationKind::Ambiguous) const;
 
   /** Create the source file and return it. generated
    * indicates if it is a generated file, this is used in determining
    * how to create the source file instance e.g. name
    */
-  cmSourceFile* CreateSource(const std::string& sourceName,
-                             bool generated = false);
+  cmSourceFile* CreateSource(
+    const std::string& sourceName, bool generated = false,
+    cmSourceFileLocationKind kind = cmSourceFileLocationKind::Ambiguous);
 
   /** Get a cmSourceFile pointer for a given source name, if the name is
    *  not found, then create the source file and return it. generated
    * indicates if it is a generated file, this is used in determining
    * how to create the source file instance e.g. name
    */
-  cmSourceFile* GetOrCreateSource(const std::string& sourceName,
-                                  bool generated = false);
+  cmSourceFile* GetOrCreateSource(
+    const std::string& sourceName, bool generated = false,
+    cmSourceFileLocationKind kind = cmSourceFileLocationKind::Ambiguous);
 
   void AddTargetObject(std::string const& tgtName, std::string const& objFile);