public void ShouldBuildStates3()
{
AutomatonTableFactory factory;
State[] states;
SituationSegmentFactory segmentFactory;
ISituation rootSituation;
segmentFactory = new SituationSegmentFactory();
rootSituation = segmentFactory.BuildRootSituation(
new Rule("A", Parse.Character('a').Then(Parse.Character('b').ThenCharacter('b').ThenCharacter('b').Perhaps()).ThenCharacter('c')),
new Rule("B", Parse.Character('a').ThenCharacter('b').ThenCharacter('e'))
);
factory = new AutomatonTableFactory();
states = factory.BuildStates(rootSituation);
Assert.AreEqual(7, states.Length);
Assert.AreEqual("A", ParseStates(states, 'a', 'b', 'b', 'b', 'c'));
Assert.AreEqual("A", ParseStates(states, 'a', 'c'));
Assert.ThrowsException <InvalidOperationException>(() => ParseStates(states, 'a', 'b', 'b', 'b', 'e'));
Assert.AreEqual("B", ParseStates(states, 'a', 'b', 'e'));
}
public void ShouldNotBuildStatesAndThrowExceptions()
{
AutomatonTableFactory factory;
factory = new AutomatonTableFactory();
Assert.ThrowsException <ArgumentNullException>(() => factory.BuildStates(null));
}
//private ICharReader reader;
public Lexer(params IRule[] Rules)
{
if (Rules == null)
{
throw new ArgumentNullException("Rules");
}
IAutomatonTableFactory automatonTableFactory;
ISituationSegmentFactory situationSegmentFactory;
ISituation rootSituation;
situationSegmentFactory = new SituationSegmentFactory();
rootSituation = situationSegmentFactory.BuildRootSituation(Rules);
automatonTableFactory = new AutomatonTableFactory();
this.states = automatonTableFactory.BuildStates(rootSituation);
}
public void ShouldBuildStates()
{
AutomatonTableFactory factory;
State[] states;
SituationSegmentFactory segmentFactory;
ISituation rootSituation;
segmentFactory = new SituationSegmentFactory();
rootSituation = segmentFactory.BuildRootSituation(
new Rule("A", Parse.Character('a').ThenCharacter('b').ThenCharacter('c')),
new Rule("B", Parse.Character('a').ThenCharacter('b').ThenAnyCharacter())
);
factory = new AutomatonTableFactory();
states = factory.BuildStates(rootSituation);
Assert.AreEqual(5, states.Length);
Assert.AreEqual("A", ParseStates(states, 'a', 'b', 'c'));
Assert.AreEqual("B", ParseStates(states, 'a', 'b', 'd'));
}
