Patch to implement rewriting of properties.

Fixes radar 7562952.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@94087 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/AST/DeclObjC.h

@@ -1204,6 +1204,7 @@ public:
   enum SetterKind { Assign, Retain, Copy };
   enum PropertyControl { None, Required, Optional };
 private:
+  SourceLocation AtLoc;   // location of @propery
   QualType DeclType;
   unsigned PropertyAttributes : 8;
 
@@ -1218,8 +1219,8 @@ private:
   ObjCIvarDecl *PropertyIvarDecl;   // Synthesize ivar for this property
 
   ObjCPropertyDecl(DeclContext *DC, SourceLocation L, IdentifierInfo *Id,
-                   QualType T)
-    : NamedDecl(ObjCProperty, DC, L, Id), DeclType(T),
+                   SourceLocation AtLocation, QualType T)
+    : NamedDecl(ObjCProperty, DC, L, Id), AtLoc(AtLocation), DeclType(T),
       PropertyAttributes(OBJC_PR_noattr), PropertyImplementation(None),
       GetterName(Selector()),
       SetterName(Selector()),
@@ -1227,8 +1228,12 @@ private:
 public:
   static ObjCPropertyDecl *Create(ASTContext &C, DeclContext *DC,
                                   SourceLocation L,
-                                  IdentifierInfo *Id, QualType T,
+                                  IdentifierInfo *Id, SourceLocation AtLocation,
+                                  QualType T,
                                   PropertyControl propControl = None);
+  SourceLocation getAtLoc() const { return AtLoc; }
+  void setAtLoc(SourceLocation L) { AtLoc = L; }
+  
   QualType getType() const { return DeclType; }
   void setType(QualType T) { DeclType = T; }
 

lib/AST/DeclObjC.cpp

@@ -790,9 +790,10 @@ ObjCCompatibleAliasDecl::Create(ASTContext &C, DeclContext *DC,
 ObjCPropertyDecl *ObjCPropertyDecl::Create(ASTContext &C, DeclContext *DC,
                                            SourceLocation L,
                                            IdentifierInfo *Id,
+                                           SourceLocation AtLoc,
                                            QualType T,
                                            PropertyControl propControl) {
-  return new (C) ObjCPropertyDecl(DC, L, Id, T);
+  return new (C) ObjCPropertyDecl(DC, L, Id, AtLoc, T);
 }
 
 

lib/Frontend/PCHReaderDecl.cpp

@@ -326,6 +326,7 @@ void PCHDeclReader::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *CAD) {
 
 void PCHDeclReader::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
   VisitNamedDecl(D);
+  D->setAtLoc(SourceLocation::getFromRawEncoding(Record[Idx++]));
   D->setType(Reader.GetType(Record[Idx++]));
   // FIXME: stable encoding
   D->setPropertyAttributes(
@@ -705,7 +706,8 @@ Decl *PCHReader::ReadDeclRecord(uint64_t Offset, unsigned Index) {
     D = ObjCCompatibleAliasDecl::Create(*Context, 0, SourceLocation(), 0, 0);
     break;
   case pch::DECL_OBJC_PROPERTY:
-    D = ObjCPropertyDecl::Create(*Context, 0, SourceLocation(), 0, QualType());
+    D = ObjCPropertyDecl::Create(*Context, 0, SourceLocation(), 0, SourceLocation(),
+                                 QualType());
     break;
   case pch::DECL_OBJC_PROPERTY_IMPL:
     D = ObjCPropertyImplDecl::Create(*Context, 0, SourceLocation(),

lib/Frontend/PCHWriterDecl.cpp

@@ -315,6 +315,7 @@ void PCHDeclWriter::VisitObjCCompatibleAliasDecl(ObjCCompatibleAliasDecl *D) {
 
 void PCHDeclWriter::VisitObjCPropertyDecl(ObjCPropertyDecl *D) {
   VisitNamedDecl(D);
+  Writer.AddSourceLocation(D->getAtLoc(), Record);
   Writer.AddTypeRef(D->getType(), Record);
   // FIXME: stable encoding
   Record.push_back((unsigned)D->getPropertyAttributes());

lib/Frontend/RewriteObjC.cpp

@@ -833,6 +833,10 @@ void RewriteObjC::RewriteForwardClassDecl(ObjCClassDecl *ClassDecl) {
 }
 
 void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
+  // When method is a synthesized one, such as a getter/setter there is
+  // nothing to rewrite.
+  if (Method->isSynthesized())
+    return;
   SourceLocation LocStart = Method->getLocStart();
   SourceLocation LocEnd = Method->getLocEnd();
 
@@ -846,10 +850,9 @@ void RewriteObjC::RewriteMethodDeclaration(ObjCMethodDecl *Method) {
 }
 
 void RewriteObjC::RewriteProperty(ObjCPropertyDecl *prop) {
-  SourceLocation Loc = prop->getLocation();
+  SourceLocation Loc = prop->getAtLoc();
 
   ReplaceText(Loc, 0, "// ", 3);
-
   // FIXME: handle properties that are declared across multiple lines.
 }
 

lib/Sema/SemaDeclObjC.cpp

@@ -2186,7 +2186,8 @@ Sema::DeclPtrTy Sema::ActOnProperty(Scope *S, SourceLocation AtLoc,
   assert(DC && "ClassDecl is not a DeclContext");
   ObjCPropertyDecl *PDecl = ObjCPropertyDecl::Create(Context, DC,
                                                      FD.D.getIdentifierLoc(),
-                                                     FD.D.getIdentifier(), T);
+                                                     FD.D.getIdentifier(), 
+                                                     AtLoc, T);
   DeclContext::lookup_result Found = DC->lookup(PDecl->getDeclName());
   if (Found.first != Found.second && isa<ObjCPropertyDecl>(*Found.first)) {
     Diag(PDecl->getLocation(), diag::err_duplicate_property);

test/Rewriter/rewrite-protocol-type-1.m

@@ -22,3 +22,6 @@ INTF <MyProto1, MyProto2> * Func1(INTF *p2, INTF<MyProto1, MyProto2> *p3, INTF *
 	return p3;
 }
 
+@interface Foo
+@property int (*hashFunction)(const void *item, int (*size)(const void *item));
+@end