bjoernager/rust
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Implement existential types

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This commit is contained in:
Oliver Schneider 2018-07-03 19:38:14 +02:00
parent 1c84d81873
commit 53d2ebb0ad
182 changed files with 1389 additions and 121 deletions
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6
src/libsyntax/ast.rs
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@ -1394,6 +1394,7 @@ pub enum ImplItemKind {
Const(P<Ty>, P<Expr>),
Method(MethodSig, P<Block>),
Type(P<Ty>),
Existential(GenericBounds),
Macro(Mac),
}
@ -2132,6 +2133,10 @@ pub enum ItemKind {
///
/// E.g. `type Foo = Bar<u8>;`
Ty(P<Ty>, Generics),
/// An existential type declaration (`existential type`).
///
/// E.g. `existential type Foo: Bar + Boo;`
Existential(GenericBounds, Generics),
/// An enum definition (`enum` or `pub enum`).
///
/// E.g. `enum Foo<A, B> { C<A>, D<B> }`
@ -2183,6 +2188,7 @@ impl ItemKind {
ItemKind::ForeignMod(..) => "foreign module",
ItemKind::GlobalAsm(..) => "global asm",
ItemKind::Ty(..) => "type alias",
ItemKind::Existential(..) => "existential type",
ItemKind::Enum(..) => "enum",
ItemKind::Struct(..) => "struct",
ItemKind::Union(..) => "union",