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Add support for using qualified paths with structs in expression and pattern

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This commit is contained in:
Ryan Levick 2020-12-10 13:20:07 +01:00 • committed by Ryan Levick
parent c5fbcd35a8
commit 6936349233
38 changed files with 374 additions and 187 deletions
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14
compiler/rustc_ast/src/ast.rs
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@ -623,12 +623,13 @@ impl Pat {
PatKind::Ident(_, _, Some(p)) => p.walk(it),
// Walk into each field of struct.
PatKind::Struct(_, fields, _) => fields.iter().for_each(|field| field.pat.walk(it)),
PatKind::Struct(_, _, fields, _) => fields.iter().for_each(|field| field.pat.walk(it)),
// Sequence of patterns.
PatKind::TupleStruct(_, s) | PatKind::Tuple(s) | PatKind::Slice(s) | PatKind::Or(s) => {
s.iter().for_each(|p| p.walk(it))
}
PatKind::TupleStruct(_, _, s)
| PatKind::Tuple(s)
| PatKind::Slice(s)
| PatKind::Or(s) => s.iter().for_each(|p| p.walk(it)),
// Trivial wrappers over inner patterns.
PatKind::Box(s) | PatKind::Ref(s, _) | PatKind::Paren(s) => s.walk(it),
@ -701,10 +702,10 @@ pub enum PatKind {
/// A struct or struct variant pattern (e.g., `Variant {x, y, ..}`).
/// The `bool` is `true` in the presence of a `..`.
Struct(Path, Vec<PatField>, /* recovered */ bool),
Struct(Option<QSelf>, Path, Vec<PatField>, /* recovered */ bool),
/// A tuple struct/variant pattern (`Variant(x, y, .., z)`).
TupleStruct(Path, Vec<P<Pat>>),
TupleStruct(Option<QSelf>, Path, Vec<P<Pat>>),
/// An or-pattern `A | B | C`.
/// Invariant: `pats.len() >= 2`.
@ -1247,6 +1248,7 @@ pub enum StructRest {
#[derive(Clone, Encodable, Decodable, Debug)]
pub struct StructExpr {
pub qself: Option<QSelf>,
pub path: Path,
pub fields: Vec<ExprField>,
pub rest: StructRest,