bendns' repos / rust-analyzer
Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/syntax/src/ast/node_ext.rs')
-rw-r--r--crates/syntax/src/ast/node_ext.rs30
1 files changed, 30 insertions, 0 deletions
diff --git a/crates/syntax/src/ast/node_ext.rs b/crates/syntax/src/ast/node_ext.rs
index 301fbcebf1..15bd5ab3c7 100644
--- a/crates/syntax/src/ast/node_ext.rs
+++ b/crates/syntax/src/ast/node_ext.rs
@@ -680,6 +680,36 @@ impl TypeOrConstParam {
}
}
+impl AstNode for TypeOrConstParam {
+ fn can_cast(kind: SyntaxKind) -> bool
+ where
+ Self: Sized,
+ {
+ matches!(kind, SyntaxKind::TYPE_PARAM | SyntaxKind::CONST_PARAM)
+ }
+
+ fn cast(syntax: SyntaxNode) -> Option<Self>
+ where
+ Self: Sized,
+ {
+ let res = match syntax.kind() {
+ SyntaxKind::TYPE_PARAM => TypeOrConstParam::Type(ast::TypeParam { syntax }),
+ SyntaxKind::CONST_PARAM => TypeOrConstParam::Const(ast::ConstParam { syntax }),
+ _ => return None,
+ };
+ Some(res)
+ }
+
+ fn syntax(&self) -> &SyntaxNode {
+ match self {
+ TypeOrConstParam::Type(it) => it.syntax(),
+ TypeOrConstParam::Const(it) => it.syntax(),
+ }
+ }
+}
+
+impl HasAttrs for TypeOrConstParam {}
+
#[derive(Debug, Clone)]
pub enum TraitOrAlias {
Trait(ast::Trait),