Make Sema::ReferencedSelectors lazily deserialized.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136357 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 14 insertions, 1 deletions

diff --git a/include/clang/Sema/ExternalSemaSource.h b/include/clang/Sema/ExternalSemaSource.h
index c9da3fefbb..d8d6abb650 100644
--- a/include/clang/Sema/ExternalSemaSource.h
+++ b/include/clang/Sema/ExternalSemaSource.h
@@ -125,7 +125,17 @@ public:
   /// to introduce the same declarations repeatedly.
   virtual void ReadLocallyScopedExternalDecls(
                  SmallVectorImpl<NamedDecl *> &Decls) {}
-  
+
+  /// \brief Read the set of referenced selectors known to the
+  /// external Sema source.
+  ///
+  /// The external source should append its own referenced selectors to the 
+  /// given vector of declarations. Note that this routine 
+  /// may be invoked multiple times; the external source should take care not 
+  /// to introduce the same selectors repeatedly.
+  virtual void ReadReferencedSelectors(
+                 SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels) {}
+
   // isa/cast/dyn_cast support
   static bool classof(const ExternalASTSource *Source) {
     return Source->SemaSource;
diff --git a/include/clang/Serialization/ASTReader.h b/include/clang/Serialization/ASTReader.h
index 7de5ec1ffc..0113e6f98d 100644
--- a/include/clang/Serialization/ASTReader.h
+++ b/include/clang/Serialization/ASTReader.h
@@ -1391,6 +1391,9 @@ public:
   virtual void ReadLocallyScopedExternalDecls(
                  SmallVectorImpl<NamedDecl *> &Decls);
   
+  virtual void ReadReferencedSelectors(
+                 SmallVectorImpl<std::pair<Selector, SourceLocation> > &Sels);
+
   /// \brief Load a selector from disk, registering its ID if it exists.
   void LoadSelector(Selector Sel);