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Fix bug in parser error handling

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This commit is contained in:
Max Brunsfeld 2014-02-25 18:32:17 -08:00
parent 4541332c2b
commit df223d566e
3 changed files with 24 additions and 14 deletions
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2
src/runtime/tree.cpp
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@ -33,6 +33,7 @@ ts_tree * ts_tree_make_node(ts_symbol symbol, size_t child_count, ts_tree **chil
ts_tree * ts_tree_make_error(char lookahead_char, size_t expected_input_count, const ts_symbol *expected_inputs) {
ts_tree *result = new ts_tree();
result->symbol = ts_symbol_error;
result->data.error = {
.lookahead_char = lookahead_char,
.expected_input_count = expected_input_count,
@ -84,6 +85,7 @@ size_t ts_tree_child_count(const ts_tree *tree) {
static string __tree_to_string(const ts_tree *tree, const char **symbol_names) {
if (!tree) return "#<null-tree>";
if (tree->symbol == ts_symbol_error) return "(ERROR)";
string result = string("(") + symbol_names[tree->symbol];
for (int i = 0; i < tree->data.children.count; i++)
result += " " + __tree_to_string(tree->data.children.contents[i], symbol_names);