| // Copyright 2014 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. |
| |
| fn macros() { |
| macro_rules! foo{ |
| ($p:pat, $e:expr, $b:block) => {{ |
| if let $p = $e $b |
| }} |
| } |
| macro_rules! bar{ |
| ($p:pat, $e:expr, $b:block) => {{ |
| foo!($p, $e, $b) |
| }} |
| } |
| |
| foo!(a, 1, { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| }); |
| bar!(a, 1, { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| }); |
| } |
| |
| pub fn main() { |
| if let a = 1 { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| } |
| |
| if let a = 1 { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| } else if true { |
| println!("else-if in irrefutable if-let"); |
| } else { |
| println!("else in irrefutable if-let"); |
| } |
| |
| if let 1 = 2 { |
| println!("refutable pattern"); |
| } else if let a = 1 { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| } |
| |
| if true { |
| println!("if"); |
| } else if let a = 1 { //~ ERROR irrefutable if-let |
| println!("irrefutable pattern"); |
| } |
| } |