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// RUN: %clang_cc1 -fblocks -triple x86_64-apple-darwin11 -fsyntax-only -std=c++11 -verify %s
@class NSArray;
@interface NSMutableDictionary
- (id)objectForKeyedSubscript:(id)key;
- (void)setObject:(id)object forKeyedSubscript:(id)key; // expected-note {{passing argument to parameter 'object' here}}
@end
template<typename T, typename U, typename O>
void test_dictionary_subscripts(T base, U key, O obj) {
base[key] = obj; // expected-error {{expected method to write array element not found on object of type 'NSMutableDictionary *'}} \
// expected-error {{cannot initialize a parameter of type 'id' with an lvalue of type 'int'}}
obj = base[key]; // expected-error {{expected method to read array element not found on object of type 'NSMutableDictionary *'}} \
// expected-error {{assigning to 'int' from incompatible type 'id'}}
}
template void test_dictionary_subscripts(NSMutableDictionary*, id, NSArray *ns);
template void test_dictionary_subscripts(NSMutableDictionary*, NSArray *ns, id);
template void test_dictionary_subscripts(NSMutableDictionary*, int, id); // expected-note {{in instantiation of function template specialization 'test_dictionary_subscripts<NSMutableDictionary *, int, id>' requested here}}
template void test_dictionary_subscripts(NSMutableDictionary*, id, int); // expected-note {{in instantiation of function template specialization 'test_dictionary_subscripts<NSMutableDictionary *, id, int>' requested here}}
@interface NSMutableArray
- (id)objectAtIndexedSubscript:(int)index;
- (void)setObject:(id)object atIndexedSubscript:(int)index;
@end
template<typename T, typename U, typename O>
void test_array_subscripts(T base, U index, O obj) {
base[index] = obj; // expected-error {{indexing expression is invalid because subscript type 'double' is not an integral or objective-C pointer type}}
obj = base[index]; // expected-error {{indexing expression is invalid because subscript type 'double' is not an integral or objective-C pointer type}}
}
template void test_array_subscripts(NSMutableArray *, int, id);
template void test_array_subscripts(NSMutableArray *, short, id);
enum E { e };
template void test_array_subscripts(NSMutableArray *, E, id);
template void test_array_subscripts(NSMutableArray *, double, id); // expected-note {{in instantiation of function template specialization 'test_array_subscripts<NSMutableArray *, double, id>' requested here}}
template<typename T>
struct ConvertibleTo {
operator T();
};
template<typename T>
struct ExplicitlyConvertibleTo {
explicit operator T();
};
template<typename T> ConvertibleTo<T> makeConvertible();
struct X {
ConvertibleTo<id> x;
ConvertibleTo<id> get();
};
NSMutableArray *test_array_convertibility(ConvertibleTo<NSMutableArray*> toArray,
ConvertibleTo<id> toId,
ConvertibleTo<int (^)(int)> toBlock,
ConvertibleTo<int> toInt,
ExplicitlyConvertibleTo<NSMutableArray *> toArrayExplicit) {
id array;
array[1] = toArray;
array[4] = array[1];
toArrayExplicit[2] = toId; // expected-error {{type 'ExplicitlyConvertibleTo<NSMutableArray *>' does not provide a subscript operator}}
return array[toInt];
}
id test_dict_convertibility(ConvertibleTo<NSMutableDictionary*> toDict,
ConvertibleTo<id> toId,
ConvertibleTo<int (^)(int)> toBlock,
ConvertibleTo<int> toInt,
ExplicitlyConvertibleTo<NSMutableDictionary *> toDictExplicit) {
NSMutableDictionary *Dict;
id Id;
Dict[toId] = toBlock;
Dict[toBlock] = toBlock;
Dict[toBlock] = Dict[toId] = Dict[toBlock];
Id = toDictExplicit[toId] = Id; // expected-error {{no viable overloaded operator[] for type 'ExplicitlyConvertibleTo<NSMutableDictionary *>'}}
return Dict[toBlock];
}
template<typename ...Args>
void test_bad_variadic_array_subscripting(Args ...args) {
id arr1;
arr1[3] = args; // expected-error {{expression contains unexpanded parameter pack 'args'}}
}
template<typename ...Args>
void test_variadic_array_subscripting(Args ...args) {
id arr[] = {args[3]...}; // which means: {a[3], b[3], c[3]};
}
template void test_variadic_array_subscripting(id arg1, NSMutableArray* arg2, id arg3);
@class Key;
template<typename Index, typename ...Args>
void test_variadic_dictionary_subscripting(Index I, Args ...args) {
id arr[] = {args[I]...}; // which means: {a[3], b[3], c[3]};
}
template void test_variadic_dictionary_subscripting(Key *key, id arg1, NSMutableDictionary* arg2, id arg3);
template<int N>
id get(NSMutableArray *array) {
return array[N]; // array[N] should be a value- and instantiation-dependent ObjCSubscriptRefExpr
}
struct WeirdIndex {
operator int(); // expected-note {{type conversion function declared here}}
operator id(); // expected-note {{type conversion function declared here}}
};
id FUNC(WeirdIndex w) {
NSMutableArray *array;
return array[w]; // expected-error {{indexing expression is invalid because subscript type 'WeirdIndex' has multiple type conversion functions}}
}
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