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9bda6cff20
Teach C++'s tentative parsing to handle specializations of Objective-C class types (e.g., NSArray<NSString *>) as well as Objective-C protocol qualifiers (id<NSCopying>) by extending type-annotation tokens to handle this case. As part of this, remove Objective-C protocol qualifiers from the declaration specifiers, which never really made sense: instead, provide Sema entry points to make them part of the type annotation token. Among other things, this properly diagnoses bogus types such as "<NSCopying> id" which should have been written as "id <NSCopying>". Implements template instantiation support for, e.g., NSArray<T>* in C++. Note that parameterized classes are not templates in the C++ sense, so that cannot (for example) be used as a template argument for a template template parameter. Part of rdar://problem/6294649. llvm-svn: 241545
47 lines
1.4 KiB
Objective-C
47 lines
1.4 KiB
Objective-C
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-objc-root-class %s
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// rdar://5986251
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@protocol SomeProtocol
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- (void) bar;
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@end
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void bar();
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void foo(id x) {
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bar((short<SomeProtocol>)x); // expected-error {{expected ')'}} expected-note {{to match this '('}}
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bar((<SomeProtocol>)x); // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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[(<SomeProtocol>)x bar]; // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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}
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@protocol MyProtocol
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- (void)doSomething;
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@end
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@interface MyClass
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- (void)m1:(id <MyProtocol> const)arg1;
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// FIXME: provide a better diagnostic (no typedef).
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- (void)m2:(id <MyProtocol> short)arg1; // expected-error {{'short type-name' is invalid}}
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@end
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typedef int NotAnObjCObjectType;
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// GCC doesn't diagnose this.
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NotAnObjCObjectType <SomeProtocol> *obj; // expected-error {{invalid protocol qualifiers on non-ObjC type}}
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typedef struct objc_class *Class;
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Class <SomeProtocol> UnfortunateGCCExtension;
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// rdar://10238337
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@protocol Broken @end
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@interface Crash @end
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@implementation Crash
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- (void)crashWith:(<Broken>)a { // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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}
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@end
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typedef <SomeProtocol> id TwoTypeSpecs; // expected-warning{{no object type specified}}
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// expected-error@-1{{typedef redefinition with different types ('id<SomeProtocol>' vs 'id')}}
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// expected-error@-2{{expected ';' after top level declarator}}
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