Disallow [_, ..n] syntax for fixed length arrays and repeating array constructors
Closes #19999 [breaking-change] Use [_; n] instead.
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1 changed files with 2 additions and 15 deletions
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@ -1716,12 +1716,7 @@ impl<'a> Parser<'a> {
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}
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pub fn maybe_parse_fixed_length_of_vec(&mut self) -> Option<P<ast::Expr>> {
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if self.check(&token::Comma) &&
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self.look_ahead(1, |t| *t == token::DotDot) {
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self.bump();
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self.bump();
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Some(self.parse_expr_res(RESTRICTION_NO_DOTS))
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} else if self.check(&token::Semi) {
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if self.check(&token::Semi) {
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self.bump();
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Some(self.parse_expr())
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} else {
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@ -2277,15 +2272,7 @@ impl<'a> Parser<'a> {
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} else {
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// Nonempty vector.
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let first_expr = self.parse_expr();
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if self.check(&token::Comma) &&
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self.look_ahead(1, |t| *t == token::DotDot) {
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// Repeating vector syntax: [ 0, ..512 ]
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self.bump();
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self.bump();
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let count = self.parse_expr();
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self.expect(&token::CloseDelim(token::Bracket));
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ex = ExprRepeat(first_expr, count);
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} else if self.check(&token::Semi) {
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if self.check(&token::Semi) {
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// Repeating vector syntax: [ 0; 512 ]
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self.bump();
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let count = self.parse_expr();
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