use std::sync::Arc;
use {
    SyntaxNode, SyntaxRoot, TreeRoot, AstNode,
    SyntaxKind::*,
};
{% for node in ast %}
{% set Name = node.kind | camel  %}
#[derive(Debug, Clone, Copy)]
pub struct {{ Name }}<R: TreeRoot = Arc<SyntaxRoot>> {
    syntax: SyntaxNode<R>,
}

impl<R: TreeRoot> AstNode<R> for {{ Name }}<R> {
    fn cast(syntax: SyntaxNode<R>) -> Option<Self> {
        match syntax.kind() {
            {{ node.kind }} => Some({{ Name }} { syntax }),
            _ => None,
        }
    }
    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 %}