traxys/tree-sitter
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Implement character set difference

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This commit is contained in:
Max Brunsfeld 2014-02-07 12:57:35 -08:00
parent b94fa3ed35
commit df3397f02c
7 changed files with 200 additions and 139 deletions
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6
src/compiler/generate_code/c_code.cpp
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@ -162,14 +162,14 @@ namespace tree_sitter {
string lex_error_call(const unordered_set<rules::CharacterSet> &expected_inputs) {
rules::CharacterSet expected_set;
for (auto &rule : expected_inputs)
expected_set.union_with(rule);
expected_set.add_set(rule);
string result = "LEX_ERROR(" + to_string(expected_set.ranges.size()) + ", EXPECT({";
bool started = false;
for (auto &ranges : expected_set.ranges) {
for (auto &range : expected_set.ranges) {
if (started) result += ", ";
started = true;
result += "\"" + escape_string(ranges.to_string()) + "\"";
result += "\"" + escape_string(range.to_string()) + "\"";
}
result += "}));";
return result;