Finally adobe released these eclipse plugins.
Wiki pages:
http://opensource.adobe.com/wiki/display/flexpmd/FlexPMD
http://opensource.adobe.com/wiki/display/flexpmd/FlexMetrics
http://opensource.adobe.com/wiki/display/flexpmd/FlexCPD
Eclipse plugin download:
http://opensource.adobe.com/wiki/display/flexpmd/FlexPMD+Eclipse+plugin