/// <summary>
/// Changes the state.
/// </summary>
/// <param name="tokenizer">The tokenizer.</param>
private void ChangeState(ITokenizer tokenizer)
{
//if (new StackTrace().FrameCount > 1700)
// throw new Exception("sdfgdfgdgdfgdfgdfgdfg");
StreamReader streamReader = tokenizer.StrmReader;
IState nextState = null;
while (!streamReader.EndOfStream)
{
char peekedChar = (char)streamReader.Peek();
// the order of these ifs matters -
// IsIntegerConstant must be checked before Identifier.
if (this.IsPossibleKeyword(peekedChar))
{
nextState = Keyword.Instance();
}
else if (this.IsWhiteSpace(peekedChar))
{
tokenizer.StrmReader.Read();
nextState = NewToken.Instance();
}
else if (this.IsSymbol(peekedChar))
{
nextState = Symbol.Instance();
}
else if (this.IsIntegerConstant(peekedChar))
{
nextState = IntegerConstant.Instance();
}
else if (this.IsPossibleIdentifierCharacter(peekedChar))
{
nextState = Identifier.Instance();
}
// nasty hack to get over stackoverflow - don't call recusive on each new token
if (nextState != null && nextState.GetType() != typeof(NewToken))
{
nextState.Read(tokenizer);
}
}
}
/// <summary>
/// Changes the state.
/// </summary>
/// <param name="tokenizer">The tokenizer.</param>
private void ChangeState(ITokenizer tokenizer)
{
StreamReader streamReader = tokenizer.StrmReader;
IState nextState = null;
if (!streamReader.EndOfStream)
{
char peekedChar = (char)streamReader.Peek();
// the order of these ifs matters -
// IsIntegerConstant must be checked before Identifier.
if (this.IsPossibleKeyword(peekedChar))
{
nextState = Keyword.Instance();
}
else if (this.IsWhiteSpace(peekedChar))
{
tokenizer.StrmReader.Read();
nextState = NewToken.Instance();
}
else if (this.IsSymbol(peekedChar))
{
nextState = Symbol.Instance();
}
else if (this.IsIntegerConstant(peekedChar))
{
nextState = IntegerConstant.Instance();
}
else if (this.IsPossibleIdentifierCharacter(peekedChar))
{
nextState = Identifier.Instance();
}
if (nextState != null)
{
nextState.Read(tokenizer);
}
}
}