[PATCH] Factor getObjCEncodingForPropertyType out of getObjCEncodingForPropertyDecl

[Joe Groff]

Hi everyone. I'd like to be able to get the type encoding of an ObjC
property by itself without forming an entire ObjCPropertyDecl. Here's a
small patch that factors ASTContext::getObjCEncodingForPropertyType out of
the larger getObjCEncodingForPropertyDecl method.

-Joe
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diff --git a/include/clang/AST/ASTContext.h b/include/clang/AST/ASTContext.h
index b0de90c..4f78862 100644
--- a/include/clang/AST/ASTContext.h
+++ b/include/clang/AST/ASTContext.h
@@ -1373,6 +1373,10 @@ public:
   void getObjCEncodingForType(QualType T, std::string &S,
                               const FieldDecl *Field=nullptr) const;
 
+  /// \brief Emit the Objective-C property type encoding for the given
+  /// type \p T into \p S.
+  void getObjCEncodingForPropertyType(QualType T, std::string &S) const;
+
   void getLegacyIntegralTypeEncoding(QualType &t) const;
 
   /// \brief Put the string version of the type qualifiers \p QT into \p S.
diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 4250850..6526a77 100644
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -5022,9 +5022,7 @@ void ASTContext::getObjCEncodingForPropertyDecl(const ObjCPropertyDecl *PD,
   // Encode result type.
   // GCC has some special rules regarding encoding of properties which
   // closely resembles encoding of ivars.
-  getObjCEncodingForTypeImpl(PD->getType(), S, true, true, nullptr,
-                             true /* outermost type */,
-                             true /* encoding for property */);
+  getObjCEncodingForPropertyType(PD->getType(), S);
 
   if (PD->isReadOnly()) {
     S += ",R";
@@ -5097,6 +5095,16 @@ void ASTContext::getObjCEncodingForType(QualType T, std::string& S,
                              true /* outermost type */);
 }
 
+void ASTContext::getObjCEncodingForPropertyType(QualType T,
+                                                std::string& S) const {
+  // Encode result type.
+  // GCC has some special rules regarding encoding of properties which
+  // closely resembles encoding of ivars.
+  getObjCEncodingForTypeImpl(T, S, true, true, nullptr,
+                             true /* outermost type */,
+                             true /* encoding property */);
+}
+
 static char getObjCEncodingForPrimitiveKind(const ASTContext *C,
                                             BuiltinType::Kind kind) {
     switch (kind) {