Struct Cursor 

pub struct Cursor<'a, L: Language> { /* private fields */ }

A cursor for traversing a GreenTree.

It maintains a path from the root to the current node, allowing for parent() navigation and offset tracking.

Implementations

impl<'a, L: Language> Cursor<'a, L>

pub fn new(root: &'a GreenNode<'a, L>) -> Self

Creates a new cursor starting at the given root node.

pub fn current(&self) -> GreenTree<'a, L>

Returns the current element.

pub fn as_node(&self) -> Option<&'a GreenNode<'a, L>>

Returns the current element as a node, if it is one.

pub fn offset(&self) -> usize

Returns the absolute start offset of the current element.

pub fn len(&self) -> usize

Returns the text length of the current element.

pub fn end_offset(&self) -> usize

Returns the absolute end offset of the current element.

pub fn step_into(&mut self) -> bool

Tries to move to the first child of the current node. Returns true if successful (current was a node with children).

pub fn step_over(&mut self) -> bool

Tries to move to the next sibling. Returns true if successful.

pub fn step_out(&mut self) -> bool

Tries to move to the parent node. Returns true if successful (not at root).

pub fn step(&mut self) -> bool

Pre-order traversal step: try into, then over, then out + over. Returns true if moved to a new node, false if finished traversal.

pub fn step_next(&mut self) -> bool

Skips the current subtree (like step_over), but if that fails, goes up and over. Effectively “next node in post-order” or “next node not in this subtree”.

Trait Implementations

impl<'a, L: Clone + Language> Clone for Cursor<'a, L>

fn clone(&self) -> Cursor<'a, L>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, L: Debug + Language> Debug for Cursor<'a, L>

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

Formats the value using the given formatter.