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Fix bug in ts_node_prev_sibling w/ empty nodes

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This commit is contained in:
Max Brunsfeld 2018-08-30 20:19:26 -07:00
parent e56d17a806
commit 068c9841a1
2 changed files with 40 additions and 2 deletions
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22
test/runtime/node_test.cc
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@ -399,6 +399,28 @@ describe("Node", [&]() {
AssertThat(ts_node_next_named_sibling(root_node), Equals(NULL_NODE));
AssertThat(ts_node_prev_named_sibling(root_node), Equals(NULL_NODE));
});
it("works for missing nodes", [&]() {
ts_tree_delete(tree);
string input_string = "<div";
ts_parser_set_language(parser, load_real_language("html"));
tree = ts_parser_parse_string(parser, nullptr, input_string.c_str(), input_string.size());
root_node = ts_tree_root_node(tree);
char *node_string = ts_node_string(root_node);
AssertThat(node_string, Equals("(fragment (element (self_closing_tag (tag_name) (MISSING))))"));
ts_free(node_string);
TSNode tag_node = ts_node_child(ts_node_child(root_node, 0), 0);
TSNode missing_node = ts_node_child(tag_node, 2);
AssertThat(ts_node_type(missing_node), Equals("/>"));
AssertThat(ts_node_is_missing(missing_node), IsTrue());
TSNode tag_name_node = ts_node_prev_sibling(missing_node);
AssertThat(ts_node_type(tag_name_node), Equals("tag_name"));
AssertThat(ts_node_next_sibling(tag_name_node), Equals(missing_node));
});
});
describe("next_named_sibling(), prev_named_sibling()", [&]() {