mirror of
https://github.com/apple/swift.git
synced 2025-12-21 12:14:44 +01:00
b2cc34c241
If you want to make the parameter and argument label the same in
places where you don't get the argument label for free (i.e., the
first parameter of a function or a parameter of a subscript),
double-up the identifier:
func translate(dx dx: Int, dy: Int) { }
Make this a warning with Fix-Its to ease migration. Part of
rdar://problem/17218256.
Swift SVN r27715
63 lines
1.6 KiB
Swift
63 lines
1.6 KiB
Swift
// RUN: %target-parse-verify-swift
|
|
|
|
// Renaming of arguments.
|
|
func foo(a x: Int, b y: Int) { }
|
|
foo(a: 5, b: 7)
|
|
|
|
func bar<T>(a x: T, b y: T) { }
|
|
bar(a: 5, b: 7)
|
|
|
|
// Renaming of arguments in initializers.
|
|
struct S {
|
|
init(a x: Int, b y: Int) { }
|
|
}
|
|
|
|
S(a: 5, b: 7)
|
|
|
|
struct GS {
|
|
init<T>(a x: T, b y: T) { }
|
|
}
|
|
GS(a: 5, b: 7)
|
|
|
|
// Using the hash to make a name API.
|
|
func f1(a a: Int, b: Int) { }
|
|
f1(a: 1, b: 2)
|
|
|
|
func f2(`class` cls: Int) { }
|
|
f2(`class`: 5)
|
|
|
|
|
|
// # diagnostics.
|
|
func g1(#a x: Int, #b y: Int) { }
|
|
// expected-warning@-1{{extraneous '#' in parameter}}{{9-10=}}
|
|
// expected-warning@-2{{extraneous '#' in parameter}}{{20-21=}}
|
|
|
|
func g2(a a: Int) { }
|
|
|
|
func g3(#:Int) { }
|
|
// expected-error@-1{{expected parameter name after '#'}}
|
|
|
|
func g4(#_:Int) { }
|
|
// expected-error@-1{{expected non-empty parameter name after '#'}}{{9-10=}}
|
|
|
|
func g5(_ a: Int) { }
|
|
// expected-warning@-1{{extraneous '_' in parameter: 'a' has no keyword argument name}}{{9-11=}}
|
|
|
|
class X {
|
|
init(a a: Int) { } // expected-warning{{extraneous duplicate parameter name; 'a' already has an argument label}}{{8-10=}}
|
|
func f1(a a: Int, b: Int) { }
|
|
func f2(a: Int, b b: Int) { } // expected-warning{{extraneous duplicate parameter name; 'b' already has an argument label}}{{19-21=}}
|
|
|
|
func f3(_ a: Int, b: Int) { }
|
|
// expected-warning@-1{{extraneous '_' in parameter: 'a' has no keyword argument name}}{{11-13=}}
|
|
}
|
|
|
|
// Operators never have keyword arguments.
|
|
infix operator +++ { }
|
|
func +++(#lhs: Int, // expected-error{{operator cannot have keyword arguments}}{{10-11=}}
|
|
rhs x: Int) -> Int { // expected-error{{operator cannot have keyword arguments}}{{10-14=}}
|
|
return lhs + x
|
|
}
|
|
|
|
|