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#include "string.h"
#include "tree_sitter/api.h"
typedef struct Node {
TSPoint start_point;
TSPoint end_point;
uint32_t start_byte;
uint32_t end_byte;
} Node;
void extract_comments(
TSLanguage* language,
char* input,
Node** out,
uint32_t* out_len
) {
TSParser* parser = ts_parser_new();
ts_parser_set_language(parser, language);
TSTree* tree = ts_parser_parse_string(parser, NULL, input, strlen(input));
TSNode root_node = ts_tree_root_node(tree);
char* pattern = "(comment) @comment";
uint32_t error_offset;
TSQueryError error_type;
TSQuery* query = ts_query_new(language, pattern, strlen(pattern), &error_offset, &error_type);
TSQueryCursor* query_cursor = ts_query_cursor_new();
ts_query_cursor_exec(query_cursor, query, root_node);
TSQueryMatch query_match;
uint32_t n_max = 1024;
*out = malloc(sizeof(Node) * n_max);
Node* node = *out;
uint32_t n = 0;
while (ts_query_cursor_next_match(query_cursor, &query_match)) {
if (n >= n_max) {
n_max *= 2;
*out = realloc(*out, sizeof(Node) * n_max);
node = *out + n;
}
TSNode captured_node = query_match.captures[0].node;
node->start_byte = ts_node_start_byte(captured_node);
node->end_byte = ts_node_end_byte(captured_node);
node->start_point = ts_node_start_point(captured_node);
node->end_point = ts_node_end_point(captured_node);
node++; n++;
}
*out_len = n;
ts_query_cursor_delete(query_cursor);
ts_query_delete(query);
ts_tree_delete(tree);
ts_parser_delete(parser);
}
void ts_tree_root_node_p(TSTree *tree, TSNode *node) {
(*node) = ts_tree_root_node(tree);
}
uint32_t ts_node_named_child_count_p(TSNode *node) {
return ts_node_named_child_count(*node);
}
uint32_t ts_node_start_byte_p(TSNode *node) {
return ts_node_start_byte(*node);
}
uint32_t ts_node_end_byte_p(TSNode *node) {
return ts_node_end_byte(*node);
}
uint32_t ts_node_start_point_p(TSNode *node, TSPoint *point) {
(*point) = ts_node_start_point(*node);
}
uint32_t ts_node_end_point_p(TSNode *node, TSPoint *point) {
(*point) = ts_node_end_point(*node);
}
const char* ts_node_type_p(TSNode *node) {
return ts_node_type(*node);
}
void ts_node_named_child_p(TSNode* self, uint32_t child_index, TSNode* node) {
(*node) = ts_node_named_child(*self, child_index);
}
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