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Fix sizing of error nodes after edits

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This commit is contained in:
Max Brunsfeld 2014-10-05 16:56:50 -07:00
parent 6d37877e49
commit af7f57a80e
4 changed files with 66 additions and 19 deletions
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32
spec/runtime/parser_spec.cc
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@ -29,19 +29,28 @@ describe("Parser", [&]() {
reader = new SpyReader(text, chunk_size);
ts_document_set_input(doc, reader->input());
root = ts_document_root_node(doc);
AssertThat(ts_node_size(root).bytes + ts_node_pos(root).bytes, Equals(strlen(text)));
reader->clear();
};
auto insert_text = [&](size_t position, string text) {
size_t prev_size = ts_node_size(root).bytes + ts_node_pos(root).bytes;
AssertThat(reader->insert(position, text), IsTrue());
ts_document_edit(doc, { position, 0, text.length() });
root = ts_document_root_node(doc);
size_t new_size = ts_node_size(root).bytes + ts_node_pos(root).bytes;
AssertThat(new_size, Equals(prev_size + text.size()));
};
auto delete_text = [&](size_t position, size_t length) {
size_t prev_size = ts_node_size(root).bytes + ts_node_pos(root).bytes;
AssertThat(reader->erase(position, length), IsTrue());
ts_document_edit(doc, { position, length, 0 });
root = ts_document_root_node(doc);
size_t new_size = ts_node_size(root).bytes + ts_node_pos(root).bytes;
AssertThat(new_size, Equals(prev_size - length));
};
describe("handling errors", [&]() {
@ -223,6 +232,29 @@ describe("Parser", [&]() {
});
});
describe("introducing an error", [&]() {
it("gives the error the right size", [&]() {
ts_document_set_language(doc, ts_language_javascript());
set_text("var x = y;");
AssertThat(ts_node_string(root), Equals(
"(DOCUMENT (var_declaration "
"(identifier) (identifier)))"));
insert_text(strlen("var x = y"), " *");
AssertThat(ts_node_string(root), Equals(
"(DOCUMENT (var_declaration (ERROR ';')))"));
insert_text(strlen("var x = y *"), " z");
AssertThat(ts_node_string(root), Equals(
"(DOCUMENT (var_declaration "
"(identifier) (math_op (identifier) (identifier))))"));
});
});
describe("new tokens near the beginning of the input", [&]() {
before_each([&]() {
set_text("123 * 456");