src/test/ui/traits/suggest-fully-qualified-path-without-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
  20 trait MethodRef<T> {
  21     fn by_self(self);
  22 }
  23 impl MethodRef<i32> for &Thing {
  24     fn by_self(self) {}
  25 }
  26 impl MethodRef<u32> for &Thing {
  27     fn by_self(self) {}
  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 ref_thing = &Thing;
  45     ref_thing.method();
  46     //~^ ERROR type annotations needed
  47     //~| ERROR type annotations needed
  48     ref_thing.by_self(); //~ ERROR type annotations needed
  49
  50     let mut mut_thing = &mut Thing;
  51     mut_thing.method(); //~ ERROR type annotations needed
  52     mut_thing.mut_method(); //~ ERROR type annotations needed
  53     mut_thing.by_self(); //~ ERROR type annotations needed
  54
  55     let mut deref_to = &DerefsTo(Thing);
  56     deref_to.method(); //~ ERROR type annotations needed
  57     deref_to.mut_method(); //~ ERROR type annotations needed
  58     deref_to.by_self(); //~ ERROR type annotations needed
  59
  60     let mut deref_deref_to = &DerefsTo(DerefsTo(Thing));
  61     deref_deref_to.method(); //~ ERROR type annotations needed
  62     deref_deref_to.mut_method(); //~ ERROR type annotations needed
  63     deref_deref_to.by_self(); //~ ERROR type annotations needed
  64 }