| //@ run-pass |
| // (Closes #7911) Test that we can use the same self expression |
| // with different mutability in macro in two methods |
| |
| #![allow(unused_variables)] // unused foobar_immut + foobar_mut |
| trait FooBar { |
| fn dummy(&self) { } //~ WARN method `dummy` is never used |
| } |
| struct Bar(#[allow(dead_code)] i32); |
| struct Foo { bar: Bar } |
| |
| impl FooBar for Bar {} |
| |
| trait Test { |
| fn get_immut(&self) -> &dyn FooBar; |
| fn get_mut(&mut self) -> &mut dyn FooBar; |
| } |
| |
| macro_rules! generate_test { ($type_:path, $slf:ident, $field:expr) => ( |
| impl Test for $type_ { |
| fn get_immut(&$slf) -> &dyn FooBar { |
| &$field as &dyn FooBar |
| } |
| |
| fn get_mut(&mut $slf) -> &mut dyn FooBar { |
| &mut $field as &mut dyn FooBar |
| } |
| } |
| )} |
| |
| generate_test!(Foo, self, self.bar); |
| |
| pub fn main() { |
| let mut foo: Foo = Foo { bar: Bar(42) }; |
| { let foobar_immut = foo.get_immut(); } |
| { let foobar_mut = foo.get_mut(); } |
| } |
