Get the next state in the grammar.
Arguments
- x
[tree_sitter_language]A tree-sitter language object.
- state, symbol
[integer]Vectors of equal length containing the current state and symbol information.
Examples
language <- treesitter.r::language()
parser <- parser(language)
text <- "fn <- function() { 1 + 1 }"
tree <- parser_parse(parser, text)
node <- tree_root_node(tree)
# Navigate to function definition
node <- node_child(node, 1)
node <- node_child(node, 3)
node
#> <tree_sitter_node>
#>
#> ── Text ──────────────────────────────────────────────────────────────────
#> function() { 1 + 1 }
#>
#> ── S-Expression ──────────────────────────────────────────────────────────
#> (function_definition [(0, 6), (0, 26)]
#> name: "function" [(0, 6), (0, 14)]
#> parameters: (parameters [(0, 14), (0, 16)]
#> open: "(" [(0, 14), (0, 15)]
#> close: ")" [(0, 15), (0, 16)]
#> )
#> body: (braced_expression [(0, 17), (0, 26)]
#> open: "{" [(0, 17), (0, 18)]
#> body: (binary_operator [(0, 19), (0, 24)]
#> lhs: (float [(0, 19), (0, 20)])
#> operator: "+" [(0, 21), (0, 22)]
#> rhs: (float [(0, 23), (0, 24)])
#> )
#> close: "}" [(0, 25), (0, 26)]
#> )
#> )
state <- node_parse_state(node)
symbol <- node_grammar_symbol(node)
# Function definition symbol
language_symbol_name(language, 85)
#> [1] "if_statement"
# Next state (this is all grammar dependent)
language_next_state(language, state, symbol)
#> [1] 2125