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Diffstat (limited to '')
-rw-r--r-- | src/test/ui/issues/issue-18952.rs | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-18952.rs b/src/test/ui/issues/issue-18952.rs new file mode 100644 index 000000000..56378b59e --- /dev/null +++ b/src/test/ui/issues/issue-18952.rs @@ -0,0 +1,56 @@ +// This issue tests fn_traits overloading on arity. +// run-pass + +#![feature(fn_traits)] +#![feature(unboxed_closures)] + +struct Foo; + +impl Fn<(isize, isize)> for Foo { + extern "rust-call" fn call(&self, args: (isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 1, args.1 + 1) + } +} + +impl FnMut<(isize, isize)> for Foo { + extern "rust-call" fn call_mut(&mut self, args: (isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 1, args.1 + 1) + } +} + +impl FnOnce<(isize, isize)> for Foo { + type Output = (isize, isize); + extern "rust-call" fn call_once(self, args: (isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 1, args.1 + 1) + } +} + +impl Fn<(isize, isize, isize)> for Foo { + extern "rust-call" fn call(&self, args: (isize, isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 3, args.1 + 3, args.2 + 3) + } +} + +impl FnMut<(isize, isize, isize)> for Foo { + extern "rust-call" fn call_mut(&mut self, args: (isize, isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 3, args.1 + 3, args.2 + 3) + } +} +impl FnOnce<(isize, isize, isize)> for Foo { + type Output = (isize, isize, isize); + extern "rust-call" fn call_once(self, args: (isize, isize, isize)) -> Self::Output { + println!("{:?}", args); + (args.0 + 3, args.1 + 3, args.2 + 3) + } +} + +fn main() { + let foo = Foo; + assert_eq!(foo(1, 1), (2, 2)); + assert_eq!(foo(1, 1, 1), (4, 4, 4)); +} |