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Fix parsing of quantifiers with no upper bound

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This commit is contained in:
Max Brunsfeld 2018-08-06 13:41:12 -07:00
parent 44ebabda0c
commit d4264d6191
2 changed files with 5 additions and 2 deletions
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2
src/compiler/prepare_grammar/parse_regex.cc
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@ -121,7 +121,7 @@ class PatternParser {
vector<Rule> optional_entries(max_count - min_count, Rule::choice({result, Blank{}}));
entries.insert(entries.end(), optional_entries.begin(), optional_entries.end());
} else if (has_comma) {
entries.push_back(Rule::repeat(result));
entries.push_back(Rule::choice({Rule::repeat(result), Blank{} }));
}
result = Rule::seq(entries);
} else if (max_repeat_string.size()) {

5
test/compiler/prepare_grammar/parse_regex_test.cc
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@ -305,7 +305,10 @@ describe("parse_regex", []() {
CharacterSet{{' '}},
Rule::seq({
CharacterSet{{'b'}},
Repeat{CharacterSet{{'b'}}},
Rule::choice({
Repeat{CharacterSet{{'b'}}},
Blank{}
}),
}),
CharacterSet{{' '}},
Rule::seq({