src/test/compile-fail/method-missing-call.rs

   1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // Tests to make sure that parens are needed for method calls without arguments.
  12 // outputs text to make sure either an anonymous function is provided or
  13 // open-close '()' parens are given
  14
  15
  16 struct Point {
  17     x: isize,
  18     y: isize
  19 }
  20 impl Point {
  21     fn new() -> Point {
  22         Point{x:0, y:0}
  23     }
  24     fn get_x(&self) -> isize {
  25         self.x
  26     }
  27 }
  28
  29 fn main() {
  30     let point: Point = Point::new();
  31     let px: isize =  point
  32                         .get_x;//~ ERROR attempted to take value of method `get_x` on type `Point`
  33                         //~^ HELP maybe a `()` to call it is missing
  34
  35     // Ensure the span is useful
  36     let ys = &[1,2,3,4,5,6,7];
  37     let a = ys.iter()
  38               .map(|x| x)
  39               .filter(|&&x| x == 1)
  40               .filter_map; //~ ERROR attempted to take value of method `filter_map` on type
  41               //~^ HELP maybe a `()` to call it is missing
  42 }