KDevelop-PG-Qt is a parser generator written in readable source-code
and generating readable source-code. Its syntax was inspirated by
AntLR. It implements the visitor-pattern and uses the Qt library. That
is why it is ideal to be used in Qt-/KDE-based applications like
KDevelop.

WWW: http://techbase.kde.org/Development/KDevelop-PG-Qt_Introduction