bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Add has_default to GenericParamDefKind::Const

Browse source 
This currently creates a field which is always false on GenericParamDefKind for future use when
consts are permitted to have defaults

Update const_generics:default locations

Previously just ignored them, now actually do something about them.

Fix using type check instead of value

Add parsing

This adds all the necessary changes to lower const-generics defaults from parsing.

Change P<Expr> to AnonConst

This matches the arguments passed to instantiations of const generics, and makes it specific to
just anonymous constants.

Attempt to fix lowering bugs
This commit is contained in:
kadmin 2020-08-11 00:02:45 +00:00
parent 79e5814f45
commit e4e5db4e42
39 changed files with 158 additions and 77 deletions
Download patch file Download diff file Expand all files Collapse all files

11
compiler/rustc_ast_passes/src/ast_validation.rs
View file

@ -1174,6 +1174,17 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
}
}
}
if !self.session.features_untracked().const_generics_defaults {
if let GenericParamKind::Const { default: Some(ref default), .. } = param.kind {
let mut err = self.err_handler().struct_span_err(
default.value.span,
"default values for const generic parameters are unstable",
);
err.note("to enable them use #![feature(const_generic_defaults)]");
err.emit();
break;
}
}
}
validate_generic_param_order(