src/tools/clippy/tests/ui-internal/interning_defined_symbol.rs

   1 // run-rustfix
   2 #![deny(clippy::internal)]
   3 #![feature(rustc_private)]
   4
   5 extern crate rustc_span;
   6
   7 use rustc_span::symbol::Symbol;
   8
   9 macro_rules! sym {
  10     ($tt:tt) => {
  11         rustc_span::symbol::Symbol::intern(stringify!($tt))
  12     };
  13 }
  14
  15 fn main() {
  16     // Direct use of Symbol::intern
  17     let _ = Symbol::intern("f32");
  18
  19     // Using a sym macro
  20     let _ = sym!(f32);
  21
  22     // Correct suggestion when symbol isn't stringified constant name
  23     let _ = Symbol::intern("proc-macro");
  24
  25     // interning a keyword
  26     let _ = Symbol::intern("self");
  27
  28     // Interning a symbol that is not defined
  29     let _ = Symbol::intern("xyz123");
  30     let _ = sym!(xyz123);
  31
  32     // Using a different `intern` function
  33     let _ = intern("f32");
  34 }
  35
  36 fn intern(_: &str) {}