src/test/incremental/change_private_impl_method/struct_point.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 // Test where we change the body of a private method in an impl.
  12 // We then test what sort of functions must be rebuilt as a result.
  13
  14 // revisions:cfail1 cfail2
  15 // compile-flags: -Z query-dep-graph
  16 // must-compile-successfully
  17
  18 #![feature(rustc_attrs)]
  19 #![feature(stmt_expr_attributes)]
  20 #![allow(dead_code)]
  21 #![crate_type = "rlib"]
  22
  23 #![rustc_partition_translated(module="struct_point-point", cfg="cfail2")]
  24
  25 #![rustc_partition_reused(module="struct_point-fn_calls_methods_in_same_impl", cfg="cfail2")]
  26 #![rustc_partition_reused(module="struct_point-fn_calls_methods_in_another_impl", cfg="cfail2")]
  27 #![rustc_partition_reused(module="struct_point-fn_make_struct", cfg="cfail2")]
  28 #![rustc_partition_reused(module="struct_point-fn_read_field", cfg="cfail2")]
  29 #![rustc_partition_reused(module="struct_point-fn_write_field", cfg="cfail2")]
  30
  31 pub mod point {
  32     pub struct Point {
  33         pub x: f32,
  34         pub y: f32,
  35     }
  36
  37     impl Point {
  38         pub fn distance_squared(&self) -> f32 {
  39             #[cfg(cfail1)]
  40             return self.x + self.y;
  41
  42             #[cfg(cfail2)]
  43             return self.x * self.x + self.y * self.y;
  44         }
  45
  46         pub fn distance_from_origin(&self) -> f32 {
  47             self.distance_squared().sqrt()
  48         }
  49     }
  50
  51     impl Point {
  52         pub fn translate(&mut self, x: f32, y: f32) {
  53             self.x += x;
  54             self.y += y;
  55         }
  56     }
  57
  58 }
  59
  60 /// A fn item that calls (public) methods on `Point` from the same impl which changed
  61 pub mod fn_calls_methods_in_same_impl {
  62     use point::Point;
  63
  64     #[rustc_clean(label="TypeckTables", cfg="cfail2")]
  65     pub fn check() {
  66         let x = Point { x: 2.0, y: 2.0 };
  67         x.distance_from_origin();
  68     }
  69 }
  70
  71 /// A fn item that calls (public) methods on `Point` from another impl
  72 pub mod fn_calls_methods_in_another_impl {
  73     use point::Point;
  74
  75     #[rustc_clean(label="TypeckTables", cfg="cfail2")]
  76     pub fn check() {
  77         let mut x = Point { x: 2.0, y: 2.0 };
  78         x.translate(3.0, 3.0);
  79     }
  80 }
  81
  82 /// A fn item that makes an instance of `Point` but does not invoke methods
  83 pub mod fn_make_struct {
  84     use point::Point;
  85
  86     #[rustc_clean(label="TypeckTables", cfg="cfail2")]
  87     pub fn make_origin() -> Point {
  88         Point { x: 2.0, y: 2.0 }
  89     }
  90 }
  91
  92 /// A fn item that reads fields from `Point` but does not invoke methods
  93 pub mod fn_read_field {
  94     use point::Point;
  95
  96     #[rustc_clean(label="TypeckTables", cfg="cfail2")]
  97     pub fn get_x(p: Point) -> f32 {
  98         p.x
  99     }
 100 }
 101
 102 /// A fn item that writes to a field of `Point` but does not invoke methods
 103 pub mod fn_write_field {
 104     use point::Point;
 105
 106     #[rustc_clean(label="TypeckTables", cfg="cfail2")]
 107     pub fn inc_x(p: &mut Point) {
 108         p.x += 1.0;
 109     }
 110 }