Struct Node 

pub struct Node { /* private fields */ }

A single syntax node within a Tree.

Nodes hold a strong reference to their parent tree so they remain valid regardless of how the tree is moved or stored at the FFI boundary.

Implementations

impl Node

pub fn kind(&self) -> String

Return the node’s kind name (e.g. "function_definition").

pub fn kind_id(&self) -> u16

Return the node’s numeric kind ID.

pub fn start_byte(&self) -> usize

Return the inclusive start byte offset of this node.

pub fn end_byte(&self) -> usize

Return the exclusive end byte offset of this node.

pub fn byte_range(&self) -> ByteRange

Return the node’s byte range as a ByteRange.

Callers should slice their own source bytes — this is a zero-copy text accessor.

pub fn start_position(&self) -> Point

Return the start Point (row, column).

pub fn end_position(&self) -> Point

Return the end Point (row, column).

pub fn is_named(&self) -> bool

True when this node is named (not punctuation/whitespace).

pub fn is_error(&self) -> bool

True when this is an error node.

pub fn is_missing(&self) -> bool

True when this is a missing-token node.

pub fn is_extra(&self) -> bool

True when this is an “extra” node (e.g. a comment).

pub fn has_error(&self) -> bool

True when this node or any descendant is an error.

pub fn parent(&self) -> Option<Node>

Return this node’s parent, if any.

pub fn child(&self, index: u32) -> Option<Node>

Return the i-th child of this node, if any.

pub fn child_count(&self) -> usize

Total number of children (including unnamed).

pub fn named_child(&self, index: u32) -> Option<Node>

Return the i-th named child of this node, if any.

pub fn named_child_count(&self) -> usize

Number of named children of this node.

pub fn child_by_field_name(&self, name: &str) -> Option<Node>

Look up a child by its grammar-defined field name.

pub fn to_sexp(&self) -> String

Return the S-expression form of this node’s subtree.

pub fn walk(&self) -> TreeCursor

Return a TreeCursor positioned at this node.

Trait Implementations

impl Clone for Node

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.