pub trait AstNode {
// Required methods
fn can_cast(kind: SyntaxKind) -> bool
where Self: Sized;
fn cast(syntax: SyntaxNode) -> Option<Self>
where Self: Sized;
fn syntax(&self) -> &SyntaxNode;
// Provided methods
fn clone_for_update(&self) -> Self
where Self: Sized { ... }
fn clone_subtree(&self) -> Self
where Self: Sized { ... }
}Expand description
The main trait to go from untyped SyntaxNode to a typed ast. The
conversion itself has zero runtime cost: ast and syntax nodes have exactly
the same representation: a pointer to the tree root and a pointer to the
node itself.