public override Token ReadToken(TextBuffer textBuffer)
{
Match match = GetMatch(textBuffer);
if (match.Groups[2].Value == ")" && StartsWithNonWhitespaceRegex.IsMatch(textBuffer.Remainder))
throw new InvalidWordException(textBuffer, "Comment not properly ended.", false);
return new ParanEndedStringToken(match.Groups[1].Value, match.Groups[2].Value == ")");
}
private static string buildMessage(TextBuffer textBuffer, string errorDescription, bool undoLastRead)
{
if (undoLastRead)
textBuffer.UndoRead();
WordToken wordToken = TokenReader.ReadWordToken(textBuffer);
int arrowsIndex = textBuffer.PreviousIndex + textBuffer.LastRead.Length - wordToken.Name.Length;
string arrowsLine = Regex.Replace(textBuffer.Text.Substring(0, arrowsIndex), @"\S", " ", RegexOptions.Singleline);
return string.Format("{0}\n{1}\n{2}", errorDescription, textBuffer.Text, arrowsLine + new string('^', wordToken.Name.Length));
}
protected Match GetMatch(TextBuffer textBuffer)
{
Match match = TokenRegex.Match(textBuffer.Remainder);
if (match.Success)
{
textBuffer.MoveForward(match.Value.Length);
return match;
}
else
return null;
}
public override Token ReadToken(TextBuffer textBuffer)
{
string firstMatchGroup = GetFirstMatchGroup(textBuffer);
if (firstMatchGroup != null)
{
int value;
if (int.TryParse(firstMatchGroup, out value))
return new SignedIntegerToken(value);
else
textBuffer.UndoRead();
}
return null;
}
public abstract Token ReadToken(TextBuffer textBuffer);
public static SignedIntegerToken ReadSignedIntegerToken(TextBuffer textBuffer)
{
return (SignedIntegerToken)signedIntegerTokenReader.ReadToken(textBuffer);
}
public static WordToken ReadWordToken(TextBuffer textBuffer)
{
return (WordToken)wordTokenReader.ReadToken(textBuffer);
}
public static ParanEndedStringToken ReadParanEndedStringToken(TextBuffer textBuffer)
{
return (ParanEndedStringToken)paranEndedStringTokenReader.ReadToken(textBuffer);
}
public static QuoteEndedStringToken ReadQuoteEndedStringToken(TextBuffer textBuffer)
{
return (QuoteEndedStringToken)quoteEndedStringTokenReader.ReadToken(textBuffer);
}
public static EmptyLineToken ReadEmptyLineToken(TextBuffer textBuffer)
{
return (EmptyLineToken)emptyLineTokenReader.ReadToken(textBuffer);
}
public static LineCommentToken ReadLineCommentToken(TextBuffer textBuffer)
{
return (LineCommentToken)lineCommentTokenReader.ReadToken(textBuffer);
}
protected string GetFirstMatchGroup(TextBuffer textBuffer)
{
Match match = GetMatch(textBuffer);
return (match != null ? match.Groups[1].Value : null);
}
public InvalidWordException(TextBuffer textBuffer)
: this(textBuffer, true)
{
}
public override Token ReadToken(TextBuffer textBuffer)
{
string firstMatchGroup = GetFirstMatchGroup(textBuffer);
return (firstMatchGroup != null ? new WordToken(firstMatchGroup) : null);
}
public InvalidWordException(TextBuffer textBuffer, bool undoLastRead)
: this(textBuffer, "Undefined word.", undoLastRead)
{
}
public override Token ReadToken(TextBuffer textBuffer)
{
string firstMatchGroup = GetFirstMatchGroup(textBuffer);
return(firstMatchGroup != null ? new WordToken(firstMatchGroup) : null);
}
public InvalidWordException(TextBuffer textBuffer, string errorDescription)
: this(textBuffer, errorDescription, true)
{
}
public InvalidWordException(TextBuffer textBuffer, string errorDescription, bool undoLastRead)
: base(buildMessage(textBuffer, errorDescription, undoLastRead))
{
}
public override Token ReadToken(TextBuffer textBuffer)
{
return new QuoteEndedStringToken(GetFirstMatchGroup(textBuffer));
}
public override Token ReadToken(TextBuffer textBuffer)
{
return new LineCommentToken(GetFirstMatchGroup(textBuffer));
}
