Trait AstNode

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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.

Required Methods§

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fn can_cast(kind: SyntaxKind) -> bool
where Self: Sized,

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

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fn syntax(&self) -> &SyntaxNode

Provided Methods§

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

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

Implementors§