Implement Objective-C Related Result Type semantics.
Related result types apply Cocoa conventions to the type of message
sends and property accesses to Objective-C methods that are known to
always return objects whose type is the same as the type of the
receiving class (or a subclass thereof), such as +alloc and
-init. This tightens up static type safety for Objective-C, so that we
now diagnose mistakes like this:
t.m:4:10: warning: incompatible pointer types initializing 'NSSet *'
with an
expression of type 'NSArray *' [-Wincompatible-pointer-types]
NSSet *array = [[NSArray alloc] init];
^ ~~~~~~~~~~~~~~~~~~~~~~
/System/Library/Frameworks/Foundation.framework/Headers/NSObject.h:72:1:
note:
instance method 'init' is assumed to return an instance of its
receiver
type ('NSArray *')
- (id)init;
^
It also means that we get decent type inference when writing code in
Objective-C++0x:
auto array = [[NSMutableArray alloc] initWithObjects:@"one", @"two",nil];
// ^ now infers NSMutableArray* rather than id
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@132868 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/DeclObjC.cpp b/lib/AST/DeclObjC.cpp
index 24d281e..e2c4f38 100644
--- a/lib/AST/DeclObjC.cpp
+++ b/lib/AST/DeclObjC.cpp
@@ -339,12 +339,14 @@
bool isSynthesized,
bool isDefined,
ImplementationControl impControl,
+ bool HasRelatedResultType,
unsigned numSelectorArgs) {
return new (C) ObjCMethodDecl(beginLoc, endLoc,
SelInfo, T, ResultTInfo, contextDecl,
isInstance,
isVariadic, isSynthesized, isDefined,
impControl,
+ HasRelatedResultType,
numSelectorArgs);
}
@@ -446,6 +448,7 @@
case OMF_release:
case OMF_autorelease:
case OMF_retainCount:
+ case OMF_self:
if (!isInstanceMethod())
family = OMF_None;
break;