bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Rollup merge of #133424 - Nadrieril:guard-patterns-parsing, r=fee1-dead

Browse source 
Parse guard patterns

This implements the parsing of [RFC3637 Guard Patterns](https://rust-lang.github.io/rfcs/3637-guard-patterns.html) (see also [tracking issue](https://github.com/rust-lang/rust/issues/129967)). This PR is extracted from https://github.com/rust-lang/rust/pull/129996 with minor modifications.

cc `@max-niederman`
This commit is contained in:
Matthias Krüger 2024-12-08 17:18:50 +01:00 • committed by GitHub
commit 1868c8f66f
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
31 changed files with 328 additions and 81 deletions
Download patch file Download diff file Expand all files Collapse all files

11
compiler/rustc_ast/src/ast.rs
View file

@ -627,9 +627,11 @@ impl Pat {
| PatKind::Or(s) => s.iter().for_each(|p| p.walk(it)),
// Trivial wrappers over inner patterns.
PatKind::Box(s) | PatKind::Deref(s) | PatKind::Ref(s, _) | PatKind::Paren(s) => {
s.walk(it)
}
PatKind::Box(s)
| PatKind::Deref(s)
| PatKind::Ref(s, _)
| PatKind::Paren(s)
| PatKind::Guard(s, _) => s.walk(it),
// These patterns do not contain subpatterns, skip.
PatKind::Wild
@ -839,6 +841,9 @@ pub enum PatKind {
// A never pattern `!`.
Never,
/// A guard pattern (e.g., `x if guard(x)`).
Guard(P<Pat>, P<Expr>),
/// Parentheses in patterns used for grouping (i.e., `(PAT)`).
Paren(P<Pat>),