public void WhitespaceTerminalGetIntervalsShouldReturnAllWhitespaceRanges()
{
var whitespaceTerminal = new WhitespaceTerminal();
var intervals = whitespaceTerminal.GetIntervals();
Assert.AreEqual(9, intervals.Count);
}
private static BaseLexerRule CreateWhitespaceLexerRule()
{
var whitespaceTerminal = new WhitespaceTerminal();
var startState = new DfaState();
var finalState = new DfaState(true);
var whitespaceTransition = new DfaTransition(whitespaceTerminal, finalState);
startState.AddTransition(whitespaceTransition);
finalState.AddTransition(whitespaceTransition);
return(new DfaLexerRule(startState, new TokenType("[\\s]+")));
}
private static BaseLexerRule Whitespace()
{
var whitespaceTerminal = new WhitespaceTerminal();
var startWhitespace = new DfaState();
var finalWhitespace = new DfaState(true);
startWhitespace.AddTransition(new DfaTransition(whitespaceTerminal, finalWhitespace));
finalWhitespace.AddTransition(new DfaTransition(whitespaceTerminal, finalWhitespace));
var whitespace = new DfaLexerRule(startWhitespace, TokenTypes.Whitespace);
return(whitespace);
}
private static ITerminal CreateTerminalForCharacter(char value, bool isEscaped, bool negate)
{
ITerminal terminal = null;
if (!isEscaped)
{
terminal = new CharacterTerminal(value);
}
else
{
switch (value)
{
case 's':
terminal = new WhitespaceTerminal();
break;
case 'd':
terminal = new DigitTerminal();
break;
case 'w':
terminal = new WordTerminal();
break;
case 'D':
terminal = new DigitTerminal();
negate = !negate;
break;
case 'S':
terminal = new WhitespaceTerminal();
negate = !negate;
break;
case 'W':
terminal = new WordTerminal();
negate = !negate;
break;
default:
terminal = new CharacterTerminal(value);
break;
}
}
if (negate)
{
terminal = new NegationTerminal(terminal);
}
return(terminal);
}
public void WhitespaceShouldMatchSpaceCharacter()
{
var whitespaceTerminal = new WhitespaceTerminal();
Assert.IsTrue(whitespaceTerminal.IsMatch(' '));
}
public void WhitespaceTerminalShouldMatchLineFeed()
{
var whitespaceTerminal = new WhitespaceTerminal();
Assert.IsTrue(whitespaceTerminal.IsMatch('\n'));
}
public void WhitespaceTerminalShouldMatchNewLineCharacter()
{
var whitespaceTerminal = new WhitespaceTerminal();
Assert.IsTrue(whitespaceTerminal.IsMatch('\r'));
}
private static INfa Character(RegexCharacterClassCharacter character, bool negate)
{
var start = new NfaState();
var end = new NfaState();
ITerminal terminal = null;
if (!character.IsEscaped)
{
terminal = new CharacterTerminal(character.Value);
}
else
{
switch (character.Value)
{
case 's':
terminal = new WhitespaceTerminal();
break;
case 'd':
terminal = new DigitTerminal();
break;
case 'w':
terminal = new WordTerminal();
break;
case 'D':
terminal = new DigitTerminal();
negate = !negate;
break;
case 'S':
terminal = new WhitespaceTerminal();
negate = !negate;
break;
case 'W':
terminal = new WordTerminal();
negate = !negate;
break;
default:
terminal = new CharacterTerminal(character.Value);
break;
}
}
if (negate)
{
terminal = new NegationTerminal(terminal);
}
var transition = new TerminalNfaTransition(
terminal: terminal,
target: end);
start.AddTransistion(transition);
return(new Nfa(start, end));
}
