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Add has_default to GenericParamDefKind::Const

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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
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7
compiler/rustc_save_analysis/src/sig.rs
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@ -614,11 +614,12 @@ impl<'hir> Sig for hir::Generics<'hir> {
start: offset + text.len(),
end: offset + text.len() + param_text.as_str().len(),
});
if let hir::GenericParamKind::Const { ref ty, ref default } = param.kind {
if let hir::GenericParamKind::Const { ref ty, default } = param.kind {
param_text.push_str(": ");
param_text.push_str(&ty_to_string(&ty));
if let Some(ref _default) = default {
// FIXME(const_generics_defaults): push the `default` value here
if let Some(default) = default {
param_text.push_str(" = ");
param_text.push_str(&id_to_string(&scx.tcx.hir(), default.hir_id));
}
}
if !param.bounds.is_empty() {