src/test/incremental/change_private_fn/struct_point.rs

   1 // Test where we change the body of a private method in an impl.
   2 // We then test what sort of functions must be rebuilt as a result.
   3
   4 // revisions:cfail1 cfail2
   5 // compile-flags: -Z query-dep-graph
   6 // build-pass (FIXME(62277): could be check-pass?)
   7
   8 #![feature(rustc_attrs)]
   9 #![feature(stmt_expr_attributes)]
  10 #![allow(dead_code)]
  11 #![crate_type = "rlib"]
  12
  13 #![rustc_partition_codegened(module="struct_point-point", cfg="cfail2")]
  14
  15 #![rustc_partition_reused(module="struct_point-fn_calls_methods_in_same_impl", cfg="cfail2")]
  16 #![rustc_partition_reused(module="struct_point-fn_calls_methods_in_another_impl", cfg="cfail2")]
  17 #![rustc_partition_reused(module="struct_point-fn_make_struct", cfg="cfail2")]
  18 #![rustc_partition_reused(module="struct_point-fn_read_field", cfg="cfail2")]
  19 #![rustc_partition_reused(module="struct_point-fn_write_field", cfg="cfail2")]
  20
  21 pub mod point {
  22     pub struct Point {
  23         pub x: f32,
  24         pub y: f32,
  25     }
  26
  27     fn distance_squared(this: &Point) -> f32 {
  28         #[cfg(cfail1)]
  29         return this.x + this.y;
  30
  31         #[cfg(cfail2)]
  32         return this.x * this.x + this.y * this.y;
  33     }
  34
  35     impl Point {
  36         pub fn distance_from_origin(&self) -> f32 {
  37             distance_squared(self).sqrt()
  38         }
  39     }
  40
  41     impl Point {
  42         pub fn translate(&mut self, x: f32, y: f32) {
  43             self.x += x;
  44             self.y += y;
  45         }
  46     }
  47
  48 }
  49
  50 /// A fn item that calls (public) methods on `Point` from the same impl which changed
  51 pub mod fn_calls_methods_in_same_impl {
  52     use point::Point;
  53
  54     // The cached result should actually be loaded from disk
  55     // (not just marked green) - for example, `DeadVisitor`
  56     // always runs during compilation as a "pass", and loads
  57     // the typeck results for bodies.
  58     #[rustc_clean(cfg="cfail2", loaded_from_disk="typeck")]
  59     pub fn check() {
  60         let x = Point { x: 2.0, y: 2.0 };
  61         x.distance_from_origin();
  62     }
  63 }
  64
  65 /// A fn item that calls (public) methods on `Point` from another impl
  66 pub mod fn_calls_methods_in_another_impl {
  67     use point::Point;
  68
  69     #[rustc_clean(cfg="cfail2")]
  70     pub fn check() {
  71         let mut x = Point { x: 2.0, y: 2.0 };
  72         x.translate(3.0, 3.0);
  73     }
  74 }
  75
  76 /// A fn item that makes an instance of `Point` but does not invoke methods
  77 pub mod fn_make_struct {
  78     use point::Point;
  79
  80     #[rustc_clean(cfg="cfail2")]
  81     pub fn make_origin() -> Point {
  82         Point { x: 2.0, y: 2.0 }
  83     }
  84 }
  85
  86 /// A fn item that reads fields from `Point` but does not invoke methods
  87 pub mod fn_read_field {
  88     use point::Point;
  89
  90     #[rustc_clean(cfg="cfail2")]
  91     pub fn get_x(p: Point) -> f32 {
  92         p.x
  93     }
  94 }
  95
  96 /// A fn item that writes to a field of `Point` but does not invoke methods
  97 pub mod fn_write_field {
  98     use point::Point;
  99
 100     #[rustc_clean(cfg="cfail2")]
 101     pub fn inc_x(p: &mut Point) {
 102         p.x += 1.0;
 103     }
 104 }