Introduce `LocalSource` into the AST.

This will be used to keep track of the origin of a local in the AST. In
particular, it will be used by `async fn` lowering for the locals in
`let <pat>: <ty> = __arg0;` statements.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 8feab373e71..8620627765f 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -14,7 +14,7 @@ use crate::ast::{GenericParam, GenericParamKind};
 use crate::ast::GenericArg;
 use crate::ast::{Ident, ImplItem, IsAsync, IsAuto, Item, ItemKind};
 use crate::ast::{Label, Lifetime, Lit, LitKind};
-use crate::ast::Local;
+use crate::ast::{Local, LocalSource};
 use crate::ast::MacStmtStyle;
 use crate::ast::{Mac, Mac_, MacDelimiter};
 use crate::ast::{MutTy, Mutability};
@@ -5029,6 +5029,7 @@ impl<'a> Parser<'a> {
             id: ast::DUMMY_NODE_ID,
             span: lo.to(hi),
             attrs,
+            source: LocalSource::Normal,
         }))
     }