/// <summary>
/// Determines if the current character is an end comment delimiter,
/// and consumes it if so.
/// </summary>
/// <param name="nextChar"></param>
/// <param name="lineNumber"></param>
/// <param name="posInLine"></param>
/// <returns></returns>
private bool IsEndCommentDelimiter(char?nextChar, CommentDelimiters currentCommentDelimiter, ref int lineNumber, ref int posInLine)
{
if (currentCommentDelimiter.EndCommentDelimiter == EndCommentDelimiter.EndOfLine &&
nextChar.HasValue && nextChar.Value == '\n')
{
return(true);
}
else if (!String.IsNullOrEmpty(currentCommentDelimiter.EndCommentDelimiter) &&
currentCommentDelimiter.EndCommentDelimiter.Delimiter.StartsWith(nextChar.Value.ToString()))
{
int count = 0;
string endComment = "" + nextChar.Value + this.scanner.Peek(++count);
while (currentCommentDelimiter.EndCommentDelimiter.Delimiter.StartsWith(endComment) &&
currentCommentDelimiter.EndCommentDelimiter != endComment)
{
endComment = "" + nextChar.Value + this.scanner.Peek(++count);
}
if (endComment == currentCommentDelimiter.EndCommentDelimiter)
{
// consume end comment delimiter
for (int i = 0; i < count; ++i)
{
this.scanner.GetNextCharacter(out lineNumber, out posInLine);
}
}
return(endComment == currentCommentDelimiter.EndCommentDelimiter);
}
else
{
return(false);
}
}
/// <summary>
/// Determines if the current character is the beginning of a comment,
/// and consumes the entire comment delimiter if so.
/// </summary>
/// <param name="nextChar"></param>
/// <param name="lineNumber"></param>
/// <param name="posInLine"></param>
/// <returns></returns>
private bool IsBeginCommentDelimiter(char?nextChar, ref int lineNumber, ref int posInLine, out CommentDelimiters currentCommentDelimiter)
{
currentCommentDelimiter = null;
if (this.CommentDelimiters != null)
{
foreach (var commentDelimiter in this.CommentDelimiters)
{
if (!string.IsNullOrEmpty(commentDelimiter.BeginCommentDelimiter))
{
int count = 0;
string peekValue = this.scanner.Peek(++count);
string beginComment = nextChar.Value.ToString() + peekValue;
while (commentDelimiter.BeginCommentDelimiter.Delimiter.StartsWith(beginComment) &&
commentDelimiter.BeginCommentDelimiter != beginComment &&
!String.IsNullOrEmpty(peekValue) && peekValue.Length == count)
{
peekValue = this.scanner.Peek(++count);
beginComment = nextChar.Value.ToString() + peekValue;
}
if (beginComment == commentDelimiter.BeginCommentDelimiter)
{
// consume begin comment delimiter
for (int i = 0; i < count; ++i)
{
this.scanner.GetNextCharacter(out lineNumber, out posInLine);
}
currentCommentDelimiter = commentDelimiter;
return(true);
}
}
}
}
return(false);
}
