language-servers/erg
1
0
Fork 0
mirror of https://github.com/erg-lang/erg.git synced 2025-10-01 05:11:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Minor changes

Browse source
This commit is contained in:
Shunsuke Shibayama 2022-12-22 09:25:11 +09:00
parent f677d23294
commit dfa119672a
3 changed files with 13 additions and 14 deletions
Download patch file Download diff file Expand all files Collapse all files

9
compiler/erg_compiler/context/inquire.rs
View file

@ -1566,11 +1566,14 @@ impl Context {
// -> K.variance() == vec![Contravariant, Covariant]
// TODO: support keyword arguments
pub(crate) fn type_params_variance(&self) -> Vec<Variance> {
let match_tp_name = |tp: &TyParam, name: &VarName| -> bool {
tp.qual_name().as_ref() == Some(name.inspect())
};
let in_inout = |t: &Type, name: &VarName| {
(&t.qual_name()[..] == "Input" || &t.qual_name()[..] == "Output")
&& t.typarams()
.first()
.map(|inner| inner.qual_name().as_ref() == Some(name.inspect()))
.map(|inner| match_tp_name(inner, name))
.unwrap_or(false)
};
self.params
@ -1578,13 +1581,13 @@ impl Context {
.map(|(opt_name, _)| {
if let Some(name) = opt_name {
// トレイトの変性を調べるときはsuper_classesも見る必要がある
if let Some(t) = self
if let Some(variance_trait) = self
.super_traits
.iter()
.chain(self.super_classes.iter())
.find(|t| in_inout(t, name))
{
match &t.qual_name()[..] {
match &variance_trait.qual_name()[..] {
"Output" => Variance::Covariant,
"Input" => Variance::Contravariant,
_ => unreachable!(),