public void DfaLexerRuleShouldApplyToCharacterIfFirstStateHasTransition()
{
var states = new DfaState[2]
{
DfaState.Inner(),
DfaState.Final()
};
states[0].AddTransition(WhitespaceTerminal.Instance, states[1]);
states[1].AddTransition(WhitespaceTerminal.Instance, states[1]);
var dfaLexerRule = new DfaLexerRule(states[0], new TokenName(@"\s+"));
Assert.IsTrue(dfaLexerRule.CanApply(' '));
Assert.IsTrue(dfaLexerRule.CanApply('\t'));
Assert.IsTrue(dfaLexerRule.CanApply('\r'));
Assert.IsFalse(dfaLexerRule.CanApply('a'));
}
public void DfaLexerRuleShouldApplyToCharacterIfFirstStateHasTransition()
{
var states = new DfaState[2];
for (var i = 0; i < states.Length; i++)
{
states[i] = new DfaState(i == states.Length - 1);
}
var whitespaceToFinal = new DfaTransition(new WhitespaceTerminal(), states[1]);
states[0].AddTransition(whitespaceToFinal);
states[1].AddTransition(whitespaceToFinal);
var dfaLexerRule = new DfaLexerRule(states[0], new TokenType(@"\s+"));
Assert.IsTrue(dfaLexerRule.CanApply(' '));
Assert.IsTrue(dfaLexerRule.CanApply('\t'));
Assert.IsTrue(dfaLexerRule.CanApply('\r'));
Assert.IsFalse(dfaLexerRule.CanApply('a'));
}