public void Or()
{
NFA nfa = NFA.Or(NFA.Char('a'), NFA.Char('b'));
DFA dfa = nfa.ToDfa();
Assert.IsFalse(dfa.IsMatch(""));
Assert.IsTrue(dfa.IsMatch("a"));
Assert.IsTrue(dfa.IsMatch("b"));
Assert.IsFalse(dfa.IsMatch("aa"));
Assert.IsFalse(dfa.IsMatch("ab"));
Assert.IsFalse(dfa.IsMatch("bb"));
Assert.IsFalse(dfa.IsMatch("ba"));
Assert.IsFalse(dfa.IsMatch("aaa"));
Assert.IsFalse(dfa.IsMatch("aba"));
Assert.IsFalse(dfa.IsMatch("abb"));
}
public void Misc()
{
NFA nfa = NFA.Sequence(NFA.Star(NFA.Or(NFA.Char('a'), NFA.Char('b'))), NFA.Char('a'), NFA.Char('b'), NFA.Char('b')); // (a|b)*abb
DFA dfa = nfa.ToDfa();
Assert.IsFalse(dfa.IsMatch(""));
Assert.IsFalse(dfa.IsMatch("a"));
Assert.IsFalse(dfa.IsMatch("b"));
Assert.IsFalse(dfa.IsMatch("ab"));
Assert.IsTrue(dfa.IsMatch("abb"));
Assert.IsTrue(dfa.IsMatch("aabb"));
Assert.IsTrue(dfa.IsMatch("babb"));
Assert.IsTrue(dfa.IsMatch("ababb"));
Assert.IsTrue(dfa.IsMatch("aaabb"));
Assert.IsTrue(dfa.IsMatch("bbabb"));
Assert.IsTrue(dfa.IsMatch("abababb"));
}
public void DateTime()
{
CharRange digit = new CharRange('0', '9');
CharRange dash = new CharRange('-');
CharRange colon = new CharRange(':');
CharRange seperator = new CharRange(' ');
// NFA date = NFA.Sequence(NFA.Repeat(NFA.Char(digit), 4), NFA.Char(dash), NFA.Repeat(NFA.Char(digit), 2), NFA.Char(dash), NFA.Repeat(NFA.Char(digit), 2));
// NFA time = NFA.Sequence(NFA.Repeat(NFA.Char(digit), 2), NFA.Char(colon), NFA.Repeat(NFA.Char(digit), 2));
NFA date = NFA.Sequence(
NFA.Char(digit), NFA.Char(digit), NFA.Char(digit), NFA.Char(digit),
NFA.Char(dash),
NFA.Char(digit), NFA.Char(digit),
NFA.Char(dash),
NFA.Char(digit), NFA.Char(digit)
);
NFA time = NFA.Sequence(
NFA.Char(digit), NFA.Char(digit),
NFA.Char(colon),
NFA.Char(digit), NFA.Char(digit)
);
NFA datetime = NFA.Sequence(date, NFA.Char(seperator), time);
NFA nfa = NFA.Or(date, time, datetime);
DFA dfa = nfa.ToDfa();
Assert.IsTrue(dfa.IsMatch("00:00"));
Assert.IsTrue(dfa.IsMatch("23:15"));
Assert.IsTrue(dfa.IsMatch("23:59"));
Assert.IsTrue(dfa.IsMatch("2014-01-03"));
Assert.IsTrue(dfa.IsMatch("0000-00-00"));
Assert.IsTrue(dfa.IsMatch("2014-01-03 23:15"));
}
public void Time()
{
CharRange d09 = new CharRange('0', '9');
CharRange d05 = new CharRange('0', '5');
CharRange d03 = new CharRange('0', '3');
CharRange colon = new CharRange(':');
NFA a = NFA.Sequence(NFA.Or(NFA.Char('0'), NFA.Char('1')), NFA.Char(d09), NFA.Char(colon), NFA.Char(d05), NFA.Char(d09)); // [01][0-9]:[0-5][0-9]
NFA b = NFA.Sequence(NFA.Char('2'), NFA.Char(d03), NFA.Char(colon), NFA.Char(d05), NFA.Char(d09)); // [2][0-3]:[0-5][0-9]
NFA c = NFA.Sequence(NFA.Char('2'), NFA.Char('4'), NFA.Char(colon), NFA.Char('0'), NFA.Char('0')); // [2][4]:[0][0]
NFA nfa = NFA.Or(a, b, c);
DFA dfa = nfa.ToDfa();
Assert.IsTrue(dfa.IsMatch("00:00"));
Assert.IsTrue(dfa.IsMatch("01:50"));
Assert.IsTrue(dfa.IsMatch("23:15"));
Assert.IsTrue(dfa.IsMatch("23:59"));
Assert.IsTrue(dfa.IsMatch("24:00"));
Assert.IsFalse(dfa.IsMatch("14:78"));
Assert.IsFalse(dfa.IsMatch("24:59"));
}