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Fix bug in character set intersection calculation

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This commit is contained in:
Max Brunsfeld 2014-03-24 19:17:25 -07:00
parent 9cb92a0a96
commit 2a5dd3434f
2 changed files with 8 additions and 0 deletions
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6
spec/compiler/rules/character_set_spec.cc
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@ -108,6 +108,12 @@ describe("character sets", []() {
CharacterSet set2({ {'c', 'y'} });
AssertThat(set1.intersect(set2), Equals(CharacterSet({ {'c', 'e'}, {'w', 'y'} })));
});
it("works for some sets", []() {
CharacterSet set1({ {'i', 'i'} });
CharacterSet set2({ {'a', 'z'} });
AssertThat(set1.intersect(set2), Equals(CharacterSet({ {'i', 'i'} })));
});
});
});

2
src/compiler/rules/character_set.cc
View file

@ -111,6 +111,8 @@ namespace tree_sitter {
} else if (new_max <= max_int(range)) {
new_ranges.insert(CharacterRange(new_max + 1, range.max));
add_range(&removed_set, CharacterRange(range.min, new_max));
} else {
add_range(&removed_set, range);
}
} else if (new_min <= max_int(range)) {
if (new_max < max_int(range)) {