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Add parser support for generalized where clauses

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Implement support in the parser for generalized where clauses,
as well as the conversion of ast::WherePredicates to
ty::Predicate in `collect.rs`.
This commit is contained in:
Jared Roesch 2014-12-20 02:29:19 -08:00
parent 8f51ad2420
commit e0cac488ac
25 changed files with 507 additions and 152 deletions
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10
src/libsyntax/ext/deriving/generic/mod.rs
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@ -426,12 +426,18 @@ impl<'a> TraitDef<'a> {
match *clause {
ast::WherePredicate::BoundPredicate(ref wb) => {
ast::WherePredicate::BoundPredicate(ast::WhereBoundPredicate {
id: ast::DUMMY_NODE_ID,
span: self.span,
ident: wb.ident,
bounded_ty: wb.bounded_ty.clone(),
bounds: OwnedSlice::from_vec(wb.bounds.iter().map(|b| b.clone()).collect())
})
}
ast::WherePredicate::RegionPredicate(ref rb) => {
ast::WherePredicate::RegionPredicate(ast::WhereRegionPredicate {
span: self.span,
lifetime: rb.lifetime,
bound: rb.bound
})
}
ast::WherePredicate::EqPredicate(ref we) => {
ast::WherePredicate::EqPredicate(ast::WhereEqPredicate {
id: ast::DUMMY_NODE_ID,