Trait rowan::ast::AstNode

pub trait AstNode {
    type Language: Language;

    fn can_cast(kind: <Self::Language as Language>::Kind) -> bool
    where
        Self: Sized;
    fn cast(node: SyntaxNode<Self::Language>) -> Option<Self>
    where
        Self: Sized;
    fn syntax(&self) -> &SyntaxNode<Self::Language>;

    fn clone_for_update(&self) -> Self
    where
        Self: Sized,
    { ... }
    fn clone_subtree(&self) -> Self
    where
        Self: Sized,
    { ... }
}

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.

Required Associated Types

type Language: Language

Required Methods

fn can_cast(kind: <Self::Language as Language>::Kind) -> bool where
    Self: Sized, 

fn cast(node: SyntaxNode<Self::Language>) -> Option<Self> where
    Self: Sized, 

fn syntax(&self) -> &SyntaxNode<Self::Language>

Provided Methods

fn clone_for_update(&self) -> Self where
    Self: Sized, 

fn clone_subtree(&self) -> Self where
    Self: Sized, 

Implementors