/// <summary>
/// Gets a Token of type AssignmentToken from the beginning of a line of text.
/// </summary>
/// <param name="line"></param>
/// <returns></returns>
public new static Token Parse(string line)
{
Token token = new NullToken();
if (AssignmentOperatorToken.__assignmentPattern.IsMatch(line))
{
token = new AssignmentOperatorToken();
}
return(token);
}
/// <summary>
/// Gets the next token while within a variable token parse state.
/// </summary>
/// <param name="internalLine"></param>
/// <param name="token"></param>
/// <param name="state"></param>
/// <returns></returns>
public override bool GetNextToken(string internalLine, out Token token, out TokenParseState state)
{
bool result = false;
if ((result = PerenthesisToken.TryParse(internalLine, out token) && ((PerenthesisToken)token).PerenthesisType == PerenthesisTokenType.Closed))
{
state = new PerenthesisTokenParseState();
}
else if ((result = InfixFunctionToken.TryParse(internalLine, out token) || ArithmeticOperatorToken.TryParse(internalLine, out token) || BinaryOperatorToken.TryParse(internalLine, out token) || BooleanOperatorToken.TryParse(internalLine, out token) || AssignmentOperatorToken.TryParse(internalLine, out token)))
{
state = new InfixOperationParseState();
}
else if ((result = PostfixFunctionToken.TryParse(internalLine, out token)))
{
state = new PostfixFunctionParseState();
}
else if ((result = CommentToken.TryParse(internalLine, out token)))
{
state = new NullTokenParseState();
}
else
{
state = new InvalidTokenParseState();
}
return(result);
}
