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Preserve order of generic args

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hkalbasi 2021-12-29 17:05:59 +03:30
parent 9d473a0b9f
commit 4fa8749c44
39 changed files with 714 additions and 427 deletions
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28
crates/syntax/src/ast/node_ext.rs
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@ -638,6 +638,21 @@ impl ast::TypeBound {
}
}
#[derive(Debug, Clone)]
pub enum TypeOrConstParam {
Type(ast::TypeParam),
Const(ast::ConstParam),
}
impl TypeOrConstParam {
pub fn name(&self) -> Option<ast::Name> {
match self {
TypeOrConstParam::Type(x) => x.name(),
TypeOrConstParam::Const(x) => x.name(),
}
}
}
pub enum VisibilityKind {
In(ast::Path),
PubCrate,
@ -746,16 +761,11 @@ impl ast::GenericParamList {
ast::GenericParam::TypeParam(_) | ast::GenericParam::ConstParam(_) => None,
})
}
pub fn type_params(&self) -> impl Iterator<Item = ast::TypeParam> {
pub fn type_or_const_params(&self) -> impl Iterator<Item = ast::TypeOrConstParam> {
self.generic_params().filter_map(|param| match param {
ast::GenericParam::TypeParam(it) => Some(it),
ast::GenericParam::LifetimeParam(_) | ast::GenericParam::ConstParam(_) => None,
})
}
pub fn const_params(&self) -> impl Iterator<Item = ast::ConstParam> {
self.generic_params().filter_map(|param| match param {
ast::GenericParam::ConstParam(it) => Some(it),
ast::GenericParam::TypeParam(_) | ast::GenericParam::LifetimeParam(_) => None,
ast::GenericParam::TypeParam(it) => Some(ast::TypeOrConstParam::Type(it)),
ast::GenericParam::LifetimeParam(_) => None,
ast::GenericParam::ConstParam(it) => Some(ast::TypeOrConstParam::Const(it)),
})
}
}