3 files changed, 20 insertions, 3 deletions

diff --git a/crates/libsyntax2/src/ast/generated.rs.tera b/crates/libsyntax2/src/ast/generated.rs.tera
index 242837801..afce068c8 100644
--- a/crates/libsyntax2/src/ast/generated.rs.tera
+++ b/crates/libsyntax2/src/ast/generated.rs.tera
@@ -19,4 +19,15 @@ impl<R: TreeRoot> AstNode<R> for {{ Name }}<R> {
     }
     fn syntax(&self) -> &SyntaxNode<R> { &self.syntax }
 }
+
+impl<R: TreeRoot> {{ Name }}<R> {
+{% for (method_name, kind) in node.opts %}
+{% set ChildName = kind | camel  %}
+    pub fn {{ method_name }}<'a>(&'a self) -> impl Iterator<Item = {{ ChildKind }}<R>> + 'a {
+        self.syntax()
+            .children()
+            .filter_map({{ ChildKind }}::cast)
+    }
+{% endfor %}
+}
 {% endfor %}
diff --git a/crates/libsyntax2/src/grammar.ron b/crates/libsyntax2/src/grammar.ron
index bcc79843a..9ad2c2ec1 100644
--- a/crates/libsyntax2/src/grammar.ron
+++ b/crates/libsyntax2/src/grammar.ron
@@ -215,10 +215,16 @@ Grammar(
     ],
     ast: [
         (
-            kind: "FILE"
+            kind: "FILE",
+            collections: [
+                ("functions", "FUNCTION")
+            ]
         ),
         (
-            kind: "FUNCTION"
+            kind: "FUNCTION",
+            options: [
+                ("name", "NAME")
+            ]
         ),
         (
             kind: "NAME"
diff --git a/crates/tools/Cargo.toml b/crates/tools/Cargo.toml
index f9fee16f9..856f7d8cb 100644
--- a/crates/tools/Cargo.toml
+++ b/crates/tools/Cargo.toml
@@ -5,7 +5,7 @@ authors = ["Aleksey Kladov <[email protected]>"]
 publish = false
 
 [dependencies]
-ron = "0.1.7"
+ron = "0.3.0"
 walkdir = "2.1.3"
 itertools = "0.7.8"
 tera = "0.11"