HtmlLexicalAnalyzer.ReadComment C# (CSharp) Method

    private void ReadComment()
    {
        // verify that we are at a comment
        Debug.Assert(_previousCharacter == '<' && _nextCharacter == '!' && _lookAheadCharacter == '-');

        // Initialize a token
        _nextTokenType = HtmlTokenType.Comment;
        _nextToken.Length = 0;

        // advance to the next character, so that to be at the start of comment value
        this.GetNextCharacter(); // get first '-'
        this.GetNextCharacter(); // get second '-'
        this.GetNextCharacter(); // get first character of comment content

        while (true)
        {
            // Read text until end of comment
            // Note that in many actual html pages comments end with "!>" (while xml standard is "-->")
            while (!this.IsAtEndOfStream && !(_nextCharacter == '-' && _lookAheadCharacter == '-' || _nextCharacter == '!' && _lookAheadCharacter == '>'))
            {
                _nextToken.Append(this.NextCharacter);
                this.GetNextCharacter();
            }

            // Finish comment reading
            this.GetNextCharacter();
            if (_previousCharacter == '-' && _nextCharacter == '-' && _lookAheadCharacter == '>')
            {
                // Standard comment end. Eat it and exit the loop
                this.GetNextCharacter(); // get '>'
                break;
            }
            else if (_previousCharacter == '!' && _nextCharacter == '>')
            {
                // Nonstandard but possible comment end - '!>'. Exit the loop
                break;
            }
            else
            {
                // Not an end. Save character and continue continue reading
                _nextToken.Append(_previousCharacter);
                continue;
            }
        }

        // Read end of comment combination
        if (_nextCharacter == '>')
        {
            this.GetNextCharacter();
        }
    }