Generate a TreeCursor iterator

tree_walk() creates a TreeCursor starting at the root node. You can use it to "walk" the tree more efficiently than using node_child() and other similar node functions.

Usage

tree_walk(x)

Arguments

x

[tree_sitter_tree]

A tree.

Value

A TreeCursor object.

Examples

language <- treesitter.r::language()
parser <- parser(language)

text <- "1 + foo"
tree <- parser_parse(parser, text)

cursor <- tree_walk(tree)

cursor$goto_first_child()
#> [1] TRUE
cursor$goto_first_child()
#> [1] TRUE
cursor$node()
#> <tree_sitter_node>
#> 
#> ── Text ──────────────────────────────────────────────────────────────────
#> 1
#> 
#> ── S-Expression ──────────────────────────────────────────────────────────
#> (float [(0, 0), (0, 1)])
cursor$goto_next_sibling()
#> [1] TRUE
cursor$node()
#> <tree_sitter_node>
#> 
#> ── Text ──────────────────────────────────────────────────────────────────
#> +
#> 
#> ── S-Expression ──────────────────────────────────────────────────────────
#> "+" [(0, 2), (0, 3)]