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Add expr_2021 nonterminal and feature flag

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This commit adds a new nonterminal `expr_2021` in macro patterns, and
`expr_fragment_specifier_2024` feature flag. For now, `expr` and
`expr_2021` are treated the same, but in future PRs we will update
`expr` to match to new grammar.

Co-authored-by: Vincezo Palazzo <vincenzopalazzodev@gmail.com>
This commit is contained in:
Eric Holk 2024-04-12 10:19:23 -07:00
parent 030a12ce2b
commit ef6478ba5f
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GPG key ID: 8EA6B43ED4CE0911
10 changed files with 48 additions and 3 deletions
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4
compiler/rustc_ast/src/token.rs
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@ -878,6 +878,8 @@ pub enum NonterminalKind {
},
PatWithOr,
Expr,
/// Matches an expression using the rules from edition 2021 and earlier.
Expr2021,
Ty,
Ident,
Lifetime,
@ -907,6 +909,7 @@ impl NonterminalKind {
},
sym::pat_param => NonterminalKind::PatParam { inferred: false },
sym::expr => NonterminalKind::Expr,
sym::expr_2021 if edition() >= Edition::Edition2024 => NonterminalKind::Expr2021,
sym::ty => NonterminalKind::Ty,
sym::ident => NonterminalKind::Ident,
sym::lifetime => NonterminalKind::Lifetime,
@ -926,6 +929,7 @@ impl NonterminalKind {
NonterminalKind::PatParam { inferred: false } => sym::pat_param,
NonterminalKind::PatParam { inferred: true } | NonterminalKind::PatWithOr => sym::pat,
NonterminalKind::Expr => sym::expr,
NonterminalKind::Expr2021 => sym::expr_2021,
NonterminalKind::Ty => sym::ty,
NonterminalKind::Ident => sym::ident,
NonterminalKind::Lifetime => sym::lifetime,