Struct AstPtr 

pub struct AstPtr<N: AstNode> { /* private fields */ }

A lightweight pointer to an AST node, resolvable against a syntax tree.

Stores the node’s SyntaxKind and TextRange — enough to find it again given the tree root, without holding an Arc reference to the green tree.

Follows the pattern used by rust-analyzer’s AstPtr.

Implementations

impl<N: AstNode> AstPtr<N>

pub fn new(node: &N) -> Self

Create a pointer from a live AST node.

pub fn text_range(&self) -> TextRange

The text range this pointer points to.

pub fn syntax_kind(&self) -> SyntaxKind

The syntax kind of the pointed-to node.

pub fn resolve(&self, root: &SyntaxNode) -> Option<N>

Resolve this pointer back to a live AST node.

Walks the tree from root to find a node with matching kind and range. Returns None if the tree has been reparsed and no matching node exists (stale pointer).

Trait Implementations

impl<N: AstNode> Clone for AstPtr<N>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<N: AstNode> Copy for AstPtr<N>

impl<N: AstNode> Debug for AstPtr<N>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<N: AstNode> Eq for AstPtr<N>

impl<N: AstNode> From<AstPtr<N>> for SyntaxNodePtr

fn from(ptr: AstPtr<N>) -> Self

Converts to this type from the input type.

impl<N: AstNode> Hash for AstPtr<N>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<N: AstNode> PartialEq for AstPtr<N>

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.