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fix #102806, suggest use .. to fill in the rest of the fields of Struct

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yukang 2022-10-13 23:27:17 +08:00
parent 6718ea1cff
commit 1e25882944
5 changed files with 103 additions and 3 deletions
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21
compiler/rustc_parse/src/parser/expr.rs
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@ -20,9 +20,9 @@ use crate::errors::{
InvalidNumLiteralSuffix, LabeledLoopInBreak, LeadingPlusNotSupported, LeftArrowOperator,
LifetimeInBorrowExpression, MacroInvocationWithQualifiedPath, MalformedLoopLabel,
MatchArmBodyWithoutBraces, MatchArmBodyWithoutBracesSugg, MissingCommaAfterMatchArm,
MissingInInForLoop, MissingInInForLoopSub, MissingSemicolonBeforeArray, NoFieldsForFnCall,
NotAsNegationOperator, NotAsNegationOperatorSub, OctalFloatLiteralNotSupported,
OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields,
MissingDotDot, MissingInInForLoop, MissingInInForLoopSub, MissingSemicolonBeforeArray,
NoFieldsForFnCall, NotAsNegationOperator, NotAsNegationOperatorSub,
OctalFloatLiteralNotSupported, OuterAttributeNotAllowedOnIfElse, ParenthesesWithStructFields,
RequireColonAfterLabeledExpression, ShiftInterpretedAsGeneric, StructLiteralNotAllowedHere,
StructLiteralNotAllowedHereSugg, TildeAsUnaryOperator, UnexpectedTokenAfterLabel,
UnexpectedTokenAfterLabelSugg, WrapExpressionInParentheses,
@ -2897,6 +2897,21 @@ impl<'a> Parser<'a> {
}
self.recover_struct_comma_after_dotdot(exp_span);
break;
} else if self.token == token::DotDotDot {
// suggest `..v` instead of `...v`
let snapshot = self.create_snapshot_for_diagnostic();
let span = self.token.span;
self.bump();
match self.parse_expr() {
Ok(_p) => {
self.sess.emit_err(MissingDotDot { token_span: span, sugg_span: span });
break;
}
Err(inner_err) => {
inner_err.cancel();
self.restore_snapshot(snapshot);
}
}
}
let recovery_field = self.find_struct_error_after_field_looking_code();