Hello.

I have a working class that highlights fine right now.
Straight from the docs
Qt Code: 
  1. void myClass::highlightBlock(const QString &text)
  2. {
  3.     int length ;
  4.     int index = text.indexOf(this->m_pattern);
  5.     while (index >= 0)
  6.     {
  7.         length = this->m_pattern.matchedLength();
  8.         setFormat(index, length, this->m_format);
  9.         index = text.indexOf(this->m_pattern, index + length);
  10.     }
  11. }
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But now I wish to add another pattern and highlight with that. So I wonder how one should do this: Something like this?

Qt Code: 
  1. void myClass::highlightBlock(const QString &text)
  2. {
  3.     int index,index2,length;
  4.     index = text.indexOf(this->m_pattern);
  5.     index2 = text.indexOf(this->m_pattern2);
  6.     while (index >= 0 && index2 >=0)
  7.     {
  8.         if (index2 < index  && index2>0=0)
  9.         {
  10.             length = this->m_pattern2.matchedLength();
  11.             setFormat(index, length, this->m_format2);
  12.         }
  13.         else if (index < index2 && index>=0)
  14.         {
  15.            length = this->m_pattern.matchedLength();
  16.            setFormat(index, length, this->m_format);
  17.         }
  18.  
  19.         // perhaps some clever check to see that the matches do not overlap
  20.  
  21.         index = text.indexOf(this->m_pattern, index + length);
  22.         index = text.indexOf(this->m_pattern2, index + length);
  23.     }
  24. }
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Will this work?

And how do you do really do this if one would write an editor with proper syntax highlighting for a language for example c++, how do you separate all the different kind of patterns to highlight with different formats?