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Add ts_node_edit API

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This commit is contained in:
Max Brunsfeld 2018-07-11 16:17:46 -07:00
parent 308016b776
commit 9e8bec458d
6 changed files with 132 additions and 2 deletions
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17
src/runtime/node.c
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@ -494,3 +494,20 @@ TSNode ts_node_named_descendant_for_point_range(TSNode self, TSPoint min,
TSPoint max) {
return ts_node__descendant_for_point_range(self, min, max, false);
}
void ts_node_edit(TSNode *self, const TSInputEdit *edit) {
uint32_t start_byte = ts_node_start_byte(*self);
TSPoint start_point = ts_node_start_point(*self);
if (start_byte >= edit->old_end_byte) {
start_byte = edit->new_end_byte + (start_byte - edit->old_end_byte);
start_point = point_add(edit->new_end_point, point_sub(start_point, edit->old_end_point));
} else if (start_byte > edit->start_byte) {
start_byte = edit->new_end_byte;
start_point = edit->new_end_point;
}
self->context[0] = start_byte;
self->context[1] = start_point.row;
self->context[2] = start_point.column;
}