From 6713dde898ef81042a51d940d36150c52cb697b6 Mon Sep 17 00:00:00 2001 From: Michael Howell Date: Thu, 7 Jul 2022 15:20:08 -0700 Subject: diagnostics: suggest naming a field after failing to parse --- compiler/rustc_parse/src/parser/expr.rs | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'compiler/rustc_parse') diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 36d63378550..f2765e4997c 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -3037,6 +3037,19 @@ impl<'a> Parser<'a> { ",", Applicability::MachineApplicable, ); + } else if is_shorthand + && (AssocOp::from_token(&self.token).is_some() + || matches!(&self.token.kind, token::OpenDelim(_)) + || self.token.kind == token::Dot) + { + // Looks like they tried to write a shorthand, complex expression. + let ident = parsed_field.expect("is_shorthand implies Some").ident; + e.span_suggestion( + ident.span.shrink_to_lo(), + "try naming a field", + &format!("{ident}: "), + Applicability::HasPlaceholders, + ); } } if !recover { -- cgit 1.4.1-3-g733a5