E-CARES Research Project: Extraction of State Machines from PLEX Code

Re-engineering of legacy systems means among others to find out as much as possible about a specific system (reverse engineering). The information gathered in this part of re-engineering, sometimes also called system understanding, is a prerequisite to any change to the system. In almost any approach described in the literature, the reverse engi-neering starts with analyzing the source code using parser techniques. The reason is that often the source code is the only reliable source of information. But, additional knowledge like domain knowledge, information about the specific development cycle, etc. plays a special role. During our research activities in the E-CARES project we found out that domain knowledge is very important when the re-engineering process is designed to be interactive. The infor