node-is: Get information on nodes

In astgrepr: Parse and Manipulate R Code

Get information on nodes

Description

Get information on whether a node is a leaf (meaning that it doesn't have any children) and whether it is named.

Usage

node_is_leaf(x)

node_is_named(x)

node_is_named_leaf(x)

Arguments

x	A node, either from tree_root() or from another ⁠node_*()⁠ function.

Value

A logical value.

Examples

src <- "x <- rnorm(100, mean = 2)
    any(duplicated(y))
    x <- z + 1
    any(duplicated(x))"

root <- src |>
  tree_new() |>
  tree_root()

node_is_leaf(root)

root |>
  node_find(ast_rule(pattern = "z")) |>
  node_is_leaf()

root |>
  node_find(ast_rule(pattern = "z")) |>
  node_is_named()

astgrepr documentation built on June 8, 2025, 11:05 a.m.