bjoernager/rust
bjoernager/rust
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use pat<no_top_alt> for patterns in let bindings

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mark 2021-02-12 18:04:37 -06:00
parent 5233edcf1c
commit e64138c534
36 changed files with 602 additions and 357 deletions
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8
compiler/rustc_parse/src/parser/stmt.rs
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@ -13,7 +13,8 @@ use rustc_ast::token::{self, TokenKind};
use rustc_ast::util::classify;
use rustc_ast::AstLike;
use rustc_ast::{AttrStyle, AttrVec, Attribute, MacCall, MacCallStmt, MacStmtStyle};
use rustc_ast::{Block, BlockCheckMode, Expr, ExprKind, Local, Stmt, StmtKind, DUMMY_NODE_ID};
use rustc_ast::{Block, BlockCheckMode, Expr, ExprKind, Local, Stmt};
use rustc_ast::{StmtKind, DUMMY_NODE_ID};
use rustc_errors::{Applicability, PResult};
use rustc_span::source_map::{BytePos, Span};
use rustc_span::symbol::{kw, sym};
@ -220,9 +221,10 @@ impl<'a> Parser<'a> {
/// Parses a local variable declaration.
fn parse_local(&mut self, attrs: AttrVec) -> PResult<'a, P<Local>> {
let lo = self.prev_token.span;
let pat = self.parse_pat_allow_top_alt(None, GateOr::Yes, RecoverComma::Yes)?;
let (pat, colon) =
self.parse_pat_before_ty(None, GateOr::Yes, RecoverComma::Yes, "`let` bindings")?;
let (err, ty) = if self.eat(&token::Colon) {
let (err, ty) = if colon {
// Save the state of the parser before parsing type normally, in case there is a `:`
// instead of an `=` typo.
let parser_snapshot_before_type = self.clone();