| // Copyright 2015 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| #![feature(rustc_attrs)] |
| |
| #[rustc_mir] |
| fn test1(a: isize, b: (i32, i32), c: &[i32]) -> (isize, (i32, i32), &[i32]) { |
| // Test passing a number of arguments including a fat pointer. |
| // Also returning via an out pointer |
| fn callee(a: isize, b: (i32, i32), c: &[i32]) -> (isize, (i32, i32), &[i32]) { |
| (a, b, c) |
| } |
| callee(a, b, c) |
| } |
| |
| #[rustc_mir] |
| fn test2(a: isize) -> isize { |
| // Test passing a single argument. |
| // Not using out pointer. |
| fn callee(a: isize) -> isize { |
| a |
| } |
| callee(a) |
| } |
| |
| struct Foo; |
| impl Foo { |
| fn inherent_method(&self, a: isize) -> isize { a } |
| } |
| |
| #[rustc_mir] |
| fn test3(x: &Foo, a: isize) -> isize { |
| // Test calling inherent method |
| x.inherent_method(a) |
| } |
| |
| trait Bar { |
| fn extension_method(&self, a: isize) -> isize { a } |
| } |
| impl Bar for Foo {} |
| |
| #[rustc_mir] |
| fn test4(x: &Foo, a: isize) -> isize { |
| // Test calling extension method |
| x.extension_method(a) |
| } |
| |
| #[rustc_mir] |
| fn test5(x: &Bar, a: isize) -> isize { |
| // Test calling method on trait object |
| x.extension_method(a) |
| } |
| |
| #[rustc_mir] |
| fn test6<T: Bar>(x: &T, a: isize) -> isize { |
| // Test calling extension method on generic callee |
| x.extension_method(a) |
| } |
| |
| trait One<T = Self> { |
| fn one() -> T; |
| } |
| impl One for isize { |
| fn one() -> isize { 1 } |
| } |
| |
| #[rustc_mir] |
| fn test7() -> isize { |
| // Test calling trait static method |
| <isize as One>::one() |
| } |
| |
| struct Two; |
| impl Two { |
| fn two() -> isize { 2 } |
| } |
| |
| #[rustc_mir] |
| fn test8() -> isize { |
| // Test calling impl static method |
| Two::two() |
| } |
| |
| extern fn simple_extern(x: u32, y: (u32, u32)) -> u32 { |
| x + y.0 * y.1 |
| } |
| |
| #[rustc_mir] |
| fn test9() -> u32 { |
| simple_extern(41, (42, 43)) |
| } |
| |
| #[rustc_mir] |
| fn test_closure<F>(f: &F, x: i32, y: i32) -> i32 |
| where F: Fn(i32, i32) -> i32 |
| { |
| f(x, y) |
| } |
| |
| #[rustc_mir] |
| fn test_fn_object(f: &Fn(i32, i32) -> i32, x: i32, y: i32) -> i32 { |
| f(x, y) |
| } |
| |
| #[rustc_mir] |
| fn test_fn_impl(f: &&Fn(i32, i32) -> i32, x: i32, y: i32) -> i32 { |
| // This call goes through the Fn implementation for &Fn provided in |
| // core::ops::impls. It expands to a static Fn::call() that calls the |
| // Fn::call() implemenation of the object shim underneath. |
| f(x, y) |
| } |
| |
| fn main() { |
| assert_eq!(test1(1, (2, 3), &[4, 5, 6]), (1, (2, 3), &[4, 5, 6][..])); |
| assert_eq!(test2(98), 98); |
| assert_eq!(test3(&Foo, 42), 42); |
| assert_eq!(test4(&Foo, 970), 970); |
| assert_eq!(test5(&Foo, 8576), 8576); |
| assert_eq!(test6(&Foo, 12367), 12367); |
| assert_eq!(test7(), 1); |
| assert_eq!(test8(), 2); |
| assert_eq!(test9(), 41 + 42 * 43); |
| |
| let closure = |x: i32, y: i32| { x + y }; |
| assert_eq!(test_closure(&closure, 100, 1), 101); |
| let function_object = &closure as &Fn(i32, i32) -> i32; |
| assert_eq!(test_fn_object(function_object, 100, 2), 102); |
| assert_eq!(test_fn_impl(&function_object, 100, 3), 103); |
| } |