src/test/ui/traits/suggest-fully-qualified-path-with-adjustment.rs

   1 use std::ops::{Deref, DerefMut};
   2
   3 struct Thing;
   4
   5 trait Method<T> {
   6     fn method(&self) -> T;
   7     fn mut_method(&mut self) -> T;
   8 }
   9
  10 impl Method<i32> for Thing {
  11     fn method(&self) -> i32 { 0 }
  12     fn mut_method(&mut self) -> i32 { 0 }
  13 }
  14
  15 impl Method<u32> for Thing {
  16     fn method(&self) -> u32 { 0 }
  17     fn mut_method(&mut self) -> u32 { 0 }
  18 }
  19 trait MethodRef<T> {
  20     fn by_self(self);
  21 }
  22 impl MethodRef<i32> for &Thing {
  23     fn by_self(self) {}
  24 }
  25 impl MethodRef<u32> for &Thing {
  26     fn by_self(self) {}
  27 }
  28
  29
  30 struct DerefsTo<T>(T);
  31 impl<T> Deref for DerefsTo<T> {
  32     type Target = T;
  33     fn deref(&self) -> &Self::Target {
  34         &self.0
  35     }
  36 }
  37 impl<T> DerefMut for DerefsTo<T> {
  38     fn deref_mut(&mut self) -> &mut Self::Target {
  39         &mut self.0
  40     }
  41 }
  42
  43 fn main() {
  44     let mut thing = Thing;
  45     thing.method();
  46     //~^ ERROR type annotations needed
  47     //~| ERROR type annotations needed
  48     thing.mut_method(); //~ ERROR type annotations needed
  49     thing.by_self(); //~ ERROR type annotations needed
  50
  51     let mut deref_to = DerefsTo(Thing);
  52     deref_to.method(); //~ ERROR type annotations needed
  53     deref_to.mut_method(); //~ ERROR type annotations needed
  54     deref_to.by_self(); //~ ERROR type annotations needed
  55
  56     let mut deref_deref_to = DerefsTo(DerefsTo(Thing));
  57     deref_deref_to.method(); //~ ERROR type annotations needed
  58     deref_deref_to.mut_method(); //~ ERROR type annotations needed
  59     deref_deref_to.by_self(); //~ ERROR type annotations needed
  60 }