diff options
| -rw-r--r-- | compiler/rustc_ast/src/ast.rs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/compiler/rustc_ast/src/ast.rs b/compiler/rustc_ast/src/ast.rs index 4ad9981991d..9f38deacca4 100644 --- a/compiler/rustc_ast/src/ast.rs +++ b/compiler/rustc_ast/src/ast.rs @@ -2705,8 +2705,19 @@ impl Item { /// `extern` qualifier on a function item or function type. #[derive(Clone, Copy, Encodable, Decodable, Debug)] pub enum Extern { + /// No explicit extern keyword was used + /// + /// E.g. `fn foo() {}` None, + /// An explicit extern keyword was used, but with implicit ABI + /// + /// E.g. `extern fn foo() {}` + /// + /// This is just `extern "C"` (see `rustc_target::spec::abi::Abi::FALLBACK`) Implicit(Span), + /// An explicit extern keyword was used with an explicit ABI + /// + /// E.g. `extern "C" fn foo() {}` Explicit(StrLit, Span), } |