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Start work on wasm binding to query API

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This commit is contained in:
Max Brunsfeld 2019-09-10 20:54:21 -07:00
parent fe7c74e7aa
commit 52cda5f541
4 changed files with 198 additions and 12 deletions
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41
lib/binding_web/binding.c
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@ -566,3 +566,44 @@ int ts_node_is_missing_wasm(const TSTree *tree) {
TSNode node = unmarshal_node(tree);
return ts_node_is_missing(node);
}
/******************/
/* Section - Query */
/******************/
void ts_query_exec_wasm(
const TSQuery *self,
TSQueryContext *context,
const TSTree *tree
) {
TSNode node = unmarshal_node(tree);
Array(const void *) result = array_new();
unsigned index = 0;
unsigned match_count = 0;
ts_query_context_exec(context, node);
while (ts_query_context_next(context)) {
match_count++;
uint32_t pattern_index = ts_query_context_matched_pattern_index(context);
uint32_t capture_count;
const TSQueryCapture *captures = ts_query_context_matched_captures(
context,
&capture_count
);
array_grow_by(&result, 1 + 6 * capture_count);
result.contents[index++] = (const void *)pattern_index;
result.contents[index++] = (const void *)capture_count;
for (unsigned i = 0; i < capture_count; i++) {
const TSQueryCapture *capture = &captures[i];
result.contents[index++] = (const void *)capture->index;
marshal_node(result.contents + index, capture->node);
index += 5;
}
}
TRANSFER_BUFFER[0] = (const void *)(match_count);
TRANSFER_BUFFER[1] = result.contents;
}