diff options
| -rw-r--r-- | compiler/rustc_macros/src/symbols.rs | 2 | ||||
| -rw-r--r-- | compiler/rustc_span/src/symbol.rs | 5 |
2 files changed, 6 insertions, 1 deletions
diff --git a/compiler/rustc_macros/src/symbols.rs b/compiler/rustc_macros/src/symbols.rs index 1b245f2a750..92590c33b9d 100644 --- a/compiler/rustc_macros/src/symbols.rs +++ b/compiler/rustc_macros/src/symbols.rs @@ -195,10 +195,10 @@ fn symbols_with_errors(input: TokenStream) -> (TokenStream, Vec<syn::Error>) { #n, }); } - let _ = counter; // for future use let output = quote! { const SYMBOL_DIGITS_BASE: u32 = #digits_base; + const PREINTERNED_SYMBOLS_COUNT: u32 = #counter; #[doc(hidden)] #[allow(non_upper_case_globals)] diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs index 156f53ac486..70e78682c65 100644 --- a/compiler/rustc_span/src/symbol.rs +++ b/compiler/rustc_span/src/symbol.rs @@ -2027,6 +2027,11 @@ impl Symbol { pub fn can_be_raw(self) -> bool { self != kw::Empty && self != kw::Underscore && !self.is_path_segment_keyword() } + + /// Is this symbol was interned in compiler's `symbols!` macro + pub fn is_preinterned(self) -> bool { + self.as_u32() < PREINTERNED_SYMBOLS_COUNT + } } impl Ident { |