Node grammar types and symbols

• node_grammar_type() gets the node's type as it appears in the grammar, ignoring aliases.

• node_grammar_symbol() gets the node's symbol (the type as a numeric id) as it appears in the grammar, ignoring aliases. This should be used in language_next_state() rather than node_symbol().

node_grammar_type(x)

node_grammar_symbol(x)

Arguments

x

[tree_sitter_node]

A node.

See also

node_type(), node_symbol()

Examples

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

text <- "fn <- function() { 1 + 1 }"
tree <- parser_parse(parser, text)
node <- tree_root_node(tree)

# Examples for these functions are highly specific to the grammar,
# because they relies on the placement of `alias()` calls in the grammar.
node_grammar_type(node)
#> [1] "program"
node_grammar_symbol(node)
#> [1] 81