tree-sitter-iter

A very simple pre-order iterator for tree-sitter CSTs.

This library is part of zizmor.

Usage

Given a tree_sitter::Tree, you can create a TreeIter to iterate over its nodes in pre-order:

use tree_sitter_iter::TreeIter;

let tree: tree_sitter::Tree = parse(); // Your parsing logic here.

for node in TreeIter::new(&tree) {
    println!("Node kind: {}", node.kind());
}

TreeIter implements the standard Iterator trait, meaning that you can use any of the normal iterator combinators. For example, to filter only to nodes of a specific kind:

for node in TreeIter::new(&tree).filter(|n| n.kind() == "call") {
    // Do something with each "call" node.
}

tree-sitter-iter's space and time performance is equivalent to a walk of the tree using the TreeCursor APIs. In other words, it's exactly the same as using a TreeCursor manually, but with a more ergonomic iterator interface.

See the documentation for more details.