From 0e771915faf057ec4561224b75ec9b5be93d71c8 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Wed, 20 Nov 2019 11:42:58 +0300
Subject: Allow non-path default type parameters

---
 crates/ra_syntax/src/ast/generated.rs | 7 +++++--
 crates/ra_syntax/src/ast/traits.rs    | 6 ------
 crates/ra_syntax/src/grammar.ron      | 5 ++++-
 3 files changed, 9 insertions(+), 9 deletions(-)

(limited to 'crates/ra_syntax')

diff --git a/crates/ra_syntax/src/ast/generated.rs b/crates/ra_syntax/src/ast/generated.rs
index 2b381dcdb..de506d7cd 100644
--- a/crates/ra_syntax/src/ast/generated.rs
+++ b/crates/ra_syntax/src/ast/generated.rs
@@ -3625,8 +3625,11 @@ impl AstNode for TypeParam {
 impl ast::NameOwner for TypeParam {}
 impl ast::AttrsOwner for TypeParam {}
 impl ast::TypeBoundsOwner for TypeParam {}
-impl ast::DefaultTypeParamOwner for TypeParam {}
-impl TypeParam {}
+impl TypeParam {
+    pub fn default_type(&self) -> Option<TypeRef> {
+        AstChildren::new(&self.syntax).next()
+    }
+}
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]
 pub struct TypeParamList {
     pub(crate) syntax: SyntaxNode,
diff --git a/crates/ra_syntax/src/ast/traits.rs b/crates/ra_syntax/src/ast/traits.rs
index c2b005886..f99984fe0 100644
--- a/crates/ra_syntax/src/ast/traits.rs
+++ b/crates/ra_syntax/src/ast/traits.rs
@@ -163,9 +163,3 @@ impl Iterator for CommentIter {
         self.iter.by_ref().find_map(|el| el.into_token().and_then(ast::Comment::cast))
     }
 }
-
-pub trait DefaultTypeParamOwner: AstNode {
-    fn default_type(&self) -> Option<ast::PathType> {
-        child_opt(self)
-    }
-}
diff --git a/crates/ra_syntax/src/grammar.ron b/crates/ra_syntax/src/grammar.ron
index 70d85a8e6..88d1dc109 100644
--- a/crates/ra_syntax/src/grammar.ron
+++ b/crates/ra_syntax/src/grammar.ron
@@ -587,7 +587,10 @@ Grammar(
                 ("lifetime_params", "LifetimeParam" ),
             ]
         ),
-        "TypeParam": ( traits: ["NameOwner", "AttrsOwner", "TypeBoundsOwner", "DefaultTypeParamOwner"] ),
+        "TypeParam": (
+            options: [("default_type", "TypeRef")],
+            traits: ["NameOwner", "AttrsOwner", "TypeBoundsOwner"],
+        ),
         "LifetimeParam": (
             traits: ["AttrsOwner"],
         ),
-- 
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