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Change DST syntax: type -> Sized?

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closes #13367

[breaking-change] Use `Sized?` to indicate a dynamically sized type parameter or trait (used to be `type`). E.g.,

```
trait Tr for Sized? {}

fn foo<Sized? X: Share>(x: X) {}
```
This commit is contained in:
Nick Cameron
2014-07-08 14:26:02 +12:00
parent 6959931498
commit a0cfda53c4
29 changed files with 215 additions and 178 deletions
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6
src/libsyntax/fold.rs
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@@ -491,8 +491,8 @@ pub fn fold_ty_param<T: Folder>(tp: &TyParam, fld: &mut T) -> TyParam {
TyParam {
ident: tp.ident,
id: id,
sized: tp.sized,
bounds: tp.bounds.map(|x| fold_ty_param_bound(x, fld)),
unbound: tp.unbound.as_ref().map(|x| fold_ty_param_bound(x, fld)),
default: tp.default.map(|x| fld.fold_ty(x)),
span: tp.span
}
@@ -666,7 +666,7 @@ pub fn noop_fold_item_underscore<T: Folder>(i: &Item_, folder: &mut T) -> Item_
methods.iter().map(|x| folder.fold_method(*x)).collect()
)
}
ItemTrait(ref generics, ref sized, ref traits, ref methods) => {
ItemTrait(ref generics, ref unbound, ref traits, ref methods) => {
let methods = methods.iter().map(|method| {
match *method {
Required(ref m) => Required(folder.fold_type_method(m)),
@@ -674,7 +674,7 @@ pub fn noop_fold_item_underscore<T: Folder>(i: &Item_, folder: &mut T) -> Item_
}
}).collect();
ItemTrait(fold_generics(generics, folder),
*sized,
unbound.clone(),
traits.iter().map(|p| fold_trait_ref(p, folder)).collect(),
methods)
}