public async Task Tokenize(IStream <IToken> tokenStream, ICharacterStream characterStream, string filename, int startLine, int startPosition)
{
this.Filename = filename;
this.Line = startLine;
this.Position = startPosition;
Queue <char> q = new Queue <char>();
ITokenizerState current = this.StartState;
ITokenizerState next = this.StartState;
bool handled = true;
ICharacter c = null;
while ((current != this.EndState) && (current != this.ErrorState))
{
current = next;
if (handled)
{
c = await characterStream.Get();
handled = false;
}
handled = current.Handle(c, tokenStream, q);
next = current.NextState(c.Kind);
}
}
public StringMatchingState(ITokenizerState originalState, string toMatch, Func <ITokenizerStateContext, Token?> onMatch)
{
_originalState = originalState;
_expectedCharacters = toMatch.ToArray();
_onMatch = onMatch;
_nextCharacter = 0;
}
public StateHolder(ICsvCheetahConfiguration configuration)
{
Default = new DefaultState(this, configuration);
Escaped = new EscapedState(this);
EscapedWithOneQuote = new EscapedStateWithOneQuote(this, configuration);
}
public void Initialize()
{
this.EndState = new TokenizerState("end");
this.ErrorState = new TokenizerState("error");
ErrorState.DefaultNextState = this.EndState;
this.StartState = new TokenizerState("start");
this.StartState.DefaultNextState = ErrorState;
this.StartState.Handle = (c, tokenStream, queue) => false;
ITokenizerState createLiteralStringTokenState = new TokenizerState("create literal string");
createLiteralStringTokenState.DefaultNextState = this.StartState;
createLiteralStringTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.LiteralString);
return(false);
};
ITokenizerState inEndQuoteState = new TokenizerState("in end quote");
inEndQuoteState.DefaultNextState = createLiteralStringTokenState;
inEndQuoteState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.QUOTE, c, queue));
};
ITokenizerState inLiteralStringState = new TokenizerState("in literal string");
inLiteralStringState.DefaultNextState = inLiteralStringState;
inLiteralStringState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k != v.Kind, CharKind.QUOTE, c, queue));
};
inLiteralStringState.AddTransitionState(CharKind.CARRAGERETURN, this.ErrorState); // unexpected \n
inLiteralStringState.AddTransitionState(CharKind.NULL, this.ErrorState); // unexpected \0
inLiteralStringState.AddTransitionState(CharKind.QUOTE, inEndQuoteState);
ITokenizerState inStartQuoteState = new TokenizerState("in start quote");
inStartQuoteState.DefaultNextState = inLiteralStringState;
inStartQuoteState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.QUOTE, c, queue));
};
ITokenizerState beginLiteralStringState = new TokenizerState("begin literal string");
beginLiteralStringState.DefaultNextState = inStartQuoteState;
beginLiteralStringState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createPunctuationTokenState = new TokenizerState("create punctuation token");
createPunctuationTokenState.DefaultNextState = this.StartState;
createPunctuationTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Punctuation);
return(false);
};
ITokenizerState inPunctuationState = new TokenizerState("in punctuation");
inPunctuationState.DefaultNextState = createPunctuationTokenState;
inPunctuationState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.PUNCTUATION, c, queue));
};
ITokenizerState beginPunctuationState = new TokenizerState("begin punctuation state");
beginPunctuationState.DefaultNextState = inPunctuationState;
beginPunctuationState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createFractionTokenState = new TokenizerState("create fraction token");
createFractionTokenState.DefaultNextState = this.StartState;
createFractionTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.LiteralFloat);
return(false);
};
ITokenizerState inFractionState = new TokenizerState("in fraction");
inFractionState.DefaultNextState = createFractionTokenState;
inFractionState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.DIGIT, c, queue));
};
inFractionState.AddTransitionState(CharKind.DIGIT, inFractionState);
ITokenizerState beginFractionState = new TokenizerState("begin fraction");
beginFractionState.DefaultNextState = inFractionState;
beginFractionState.Handle = (c, tokenStream, queue) => false;
ITokenizerState inDecimalPointState = new TokenizerState("in decimal point");
inDecimalPointState.DefaultNextState = this.ErrorState; // there must be a number after the decimal point
inDecimalPointState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.DOT, c, queue));
};
inDecimalPointState.AddTransitionState(CharKind.DOT, beginFractionState); // hack
inDecimalPointState.AddTransitionState(CharKind.DIGIT, beginFractionState);
ITokenizerState beginDecimalPointState = new TokenizerState("begin decimal point");
beginDecimalPointState.DefaultNextState = inDecimalPointState;
beginDecimalPointState.Handle = (c, tokenStream, queue) => {
return(false);
};
ITokenizerState createLiteralIntegerTokenState = new TokenizerState("create literal integer token");
createLiteralIntegerTokenState.DefaultNextState = this.StartState;
createLiteralIntegerTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.LiteralInteger);
return(false);
};
ITokenizerState inLiteralNumberState = new TokenizerState("in number");
inLiteralNumberState.DefaultNextState = createLiteralIntegerTokenState;
inLiteralNumberState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.DIGIT, c, queue));
};
inLiteralNumberState.AddTransitionState(CharKind.DIGIT, inLiteralNumberState);
inLiteralNumberState.AddTransitionState(CharKind.DOT, beginDecimalPointState);
ITokenizerState beginLiteralNumberState = new TokenizerState("begin literal number state");
beginLiteralNumberState.DefaultNextState = inLiteralNumberState;
beginLiteralNumberState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createOneOrMoreSpaceTokenState = new TokenizerState("create one or more space token");
createOneOrMoreSpaceTokenState.DefaultNextState = this.StartState;
createOneOrMoreSpaceTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.OneOrMoreSpace);
return(false);
};
ITokenizerState inOneOrMoreSpaceState = new TokenizerState("in one or more space");
inOneOrMoreSpaceState.DefaultNextState = createOneOrMoreSpaceTokenState;
inOneOrMoreSpaceState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.SPACE, c, queue));
};
inOneOrMoreSpaceState.AddTransitionState(CharKind.SPACE, inOneOrMoreSpaceState);
ITokenizerState beginOneOrMoreSpaceState = new TokenizerState("begin one or more space");
beginOneOrMoreSpaceState.DefaultNextState = inOneOrMoreSpaceState;
beginOneOrMoreSpaceState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createLineFeedTokenState = new TokenizerState("create line feed token");
createLineFeedTokenState.DefaultNextState = this.StartState;
createLineFeedTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.LineFeed);
return(false);
};
ITokenizerState inLineFeedState = new TokenizerState("in line feed");
inLineFeedState.DefaultNextState = createLineFeedTokenState;
inLineFeedState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.LINEFEED, c, queue));
};
ITokenizerState beginLineFeedState = new TokenizerState("begin line feed state");
beginLineFeedState.DefaultNextState = inLineFeedState;
beginLineFeedState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createCarrageReturnTokenState = new TokenizerState("create carrage return token");
createCarrageReturnTokenState.DefaultNextState = this.StartState;
createCarrageReturnTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.CarrageReturn);
++this.Line;
this.Position = 0;
return(false);
};
ITokenizerState inCarrageReturnState = new TokenizerState("in carrage return");
inCarrageReturnState.DefaultNextState = createCarrageReturnTokenState;
inCarrageReturnState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.CARRAGERETURN, c, queue));
};
ITokenizerState beginCarrageReturnState = new TokenizerState("begin carrage return");
beginCarrageReturnState.DefaultNextState = inCarrageReturnState;
beginCarrageReturnState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createNULLTokenState = new TokenizerState("create NULL token");
createNULLTokenState.DefaultNextState = this.EndState; // we go to DONE
createNULLTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.NULL);
return(false);
};
ITokenizerState inNULLState = new TokenizerState("in NULL");
inNULLState.DefaultNextState = createNULLTokenState;
inNULLState.Handle = (c, tokenStream, queue) => {
bool throwaway = this.HandleStorage((k, v) => k == v.Kind, CharKind.NULL, c, queue);
return(false); // always return false once we get a null
};
ITokenizerState beginNULLState = new TokenizerState("begin NULL");
beginNULLState.DefaultNextState = inNULLState;
beginNULLState.Handle = (c, tokenStream, queueu) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createAlphaTokenState = new TokenizerState("create alpha token");
createAlphaTokenState.DefaultNextState = this.StartState;
createAlphaTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.UnquotedWord);
return(false);
};
ITokenizerState inAlphaState = new TokenizerState("in alpha");
inAlphaState.DefaultNextState = createAlphaTokenState;
inAlphaState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.ALPHA, c, queue));
};
inAlphaState.AddTransitionState(CharKind.ALPHA, inAlphaState);
ITokenizerState beginAlphaState = new TokenizerState("begin alpha");
beginAlphaState.DefaultNextState = inAlphaState;
beginAlphaState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createUnknownCharacterTokenState = new TokenizerState("create unknown character token");
createUnknownCharacterTokenState.DefaultNextState = this.StartState;
createUnknownCharacterTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Unknown);
return(false);
};
ITokenizerState inUnknownCharacterState = new TokenizerState("in unknown character");
inUnknownCharacterState.DefaultNextState = createUnknownCharacterTokenState;
inUnknownCharacterState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.UNKNOWN, c, queue));
};
inUnknownCharacterState.AddTransitionState(CharKind.UNKNOWN, inUnknownCharacterState);
ITokenizerState beginUnknownCharacterState = new TokenizerState("begin unknown character");
beginUnknownCharacterState.DefaultNextState = inUnknownCharacterState;
beginUnknownCharacterState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createDotTokenState = new TokenizerState("create dot");
createDotTokenState.DefaultNextState = this.StartState;
createDotTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Dot);
return(false);
};
ITokenizerState inDotState = new TokenizerState("in dot");
inDotState.DefaultNextState = createDotTokenState;
inDotState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.DOT, c, queue));
};
ITokenizerState beginDotState = new TokenizerState("begin dot");
beginDotState.DefaultNextState = inDotState;
beginDotState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createDashTokenState = new TokenizerState("create dash");
createDashTokenState.DefaultNextState = this.StartState;
createDashTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Dash);
return(false);
};
ITokenizerState decideDashOrNegativeState = new TokenizerState("decide");
decideDashOrNegativeState.DefaultNextState = createDashTokenState;
decideDashOrNegativeState.Handle = (c, tokenStream, queue) => false;
decideDashOrNegativeState.AddTransitionState(CharKind.DIGIT, inLiteralNumberState);
ITokenizerState inDashState = new TokenizerState("in dash");
inDashState.DefaultNextState = decideDashOrNegativeState;
inDashState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.DASH, c, queue));
};
ITokenizerState beginDashState = new TokenizerState("begin dash");
beginDashState.DefaultNextState = inDashState;
beginDashState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createCommaTokenState = new TokenizerState("create comma"); // candy to help downstream language parser
createCommaTokenState.DefaultNextState = this.StartState;
createCommaTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Comma);
return(false);
};
ITokenizerState inCommaState = new TokenizerState("in comma");
inCommaState.DefaultNextState = createCommaTokenState;
inCommaState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.COMMA, c, queue));
};
ITokenizerState beginCommaState = new TokenizerState("begin comma");
beginCommaState.DefaultNextState = inCommaState;
beginCommaState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createOpenParenTokenState = new TokenizerState("create open paren token");
createOpenParenTokenState.DefaultNextState = this.StartState;
createOpenParenTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Open_Paren);
return(false);
};
ITokenizerState inOpenParenState = new TokenizerState("in open paren");
inOpenParenState.DefaultNextState = createOpenParenTokenState;
inOpenParenState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.OPEN_PAREN, c, queue));
};
ITokenizerState beginOpenParenState = new TokenizerState("begin open paren");
beginOpenParenState.DefaultNextState = inOpenParenState;
beginOpenParenState.Handle = (c, tokenStream, queueu) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createCloseParenTokenState = new TokenizerState("create close paren token");
createCloseParenTokenState.DefaultNextState = this.StartState;
createCloseParenTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Close_Paren);
return(false);
};
ITokenizerState inCloseParenState = new TokenizerState("in close paren");
inCloseParenState.DefaultNextState = createCloseParenTokenState;
inCloseParenState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.CLOSE_PAREN, c, queue));
};
ITokenizerState beginCloseParenState = new TokenizerState("begin close paren");
beginCloseParenState.DefaultNextState = inCloseParenState;
beginCloseParenState.Handle = (c, tokenStream, queueu) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createOpenSqTokenState = new TokenizerState("create open sq token");
createOpenSqTokenState.DefaultNextState = this.StartState;
createOpenSqTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Open_Sq);
return(false);
};
ITokenizerState inOpenSqState = new TokenizerState("in open sq");
inOpenSqState.DefaultNextState = createOpenSqTokenState;
inOpenSqState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.OPEN_SQ, c, queue));
};
ITokenizerState beginOpenSqState = new TokenizerState("begin open sq");
beginOpenSqState.DefaultNextState = inOpenSqState;
beginOpenSqState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
ITokenizerState createCloseSqTokenState = new TokenizerState("create close sq token");
createCloseSqTokenState.DefaultNextState = this.StartState;
createCloseSqTokenState.Handle = (c, tokenStream, queue) => {
this.CreateToken(tokenStream, queue, TokenKind.Close_Sq);
return(false);
};
ITokenizerState inCloseSqState = new TokenizerState("in close sq");
inCloseSqState.DefaultNextState = createCloseSqTokenState;
inCloseSqState.Handle = (c, tokenStream, queue) => {
return(this.HandleStorage((k, v) => k == v.Kind, CharKind.CLOSE_SQ, c, queue));
};
ITokenizerState beginCloseSqState = new TokenizerState("begin close sq");
beginCloseSqState.DefaultNextState = inCloseSqState;
beginCloseSqState.Handle = (c, tokenStream, queue) => {
this.StartOfCurrentToken = this.Position;
return(false);
};
this.StartState.AddTransitionState(CharKind.QUOTE, beginLiteralStringState);
this.StartState.AddTransitionState(CharKind.ALPHA, beginAlphaState);
this.StartState.AddTransitionState(CharKind.PUNCTUATION, beginPunctuationState);
this.StartState.AddTransitionState(CharKind.DIGIT, beginLiteralNumberState);
this.StartState.AddTransitionState(CharKind.SPACE, beginOneOrMoreSpaceState);
this.StartState.AddTransitionState(CharKind.CARRAGERETURN, beginCarrageReturnState);
this.StartState.AddTransitionState(CharKind.LINEFEED, beginLineFeedState);
this.StartState.AddTransitionState(CharKind.UNKNOWN, beginUnknownCharacterState);
this.StartState.AddTransitionState(CharKind.NULL, beginNULLState);
this.StartState.AddTransitionState(CharKind.DASH, beginDashState);
this.StartState.AddTransitionState(CharKind.DOT, beginDotState);
this.StartState.AddTransitionState(CharKind.COMMA, beginCommaState);
this.StartState.AddTransitionState(CharKind.OPEN_PAREN, beginOpenParenState);
this.StartState.AddTransitionState(CharKind.CLOSE_PAREN, beginCloseParenState);
this.StartState.AddTransitionState(CharKind.OPEN_SQ, beginOpenSqState);
this.StartState.AddTransitionState(CharKind.CLOSE_SQ, beginCloseSqState);
}
public void SetUp()
{
_configuration = new CsvCheetahConfiguration();
_sut = new EscapedStateWithOneQuote(A.Fake <StateHolder>(), _configuration);
}
public void SetUp()
{
_originalState = A.Fake <ITokenizerState>();
_onSuccess = A.Fake <Func <ITokenizerStateContext, Token?> >();
}
public void SetUp()
{
_sut = new EscapedState(A.Fake <StateHolder>());
}
public void SetUp()
{
_configuration = new CsvCheetahConfiguration();
_sut = new DefaultState(A.Fake <StateHolder>(), _configuration);
}
public void AddTransitionState(CharKind cKind, ITokenizerState next)
{
this.ExitState[cKind] = next;
}