Custom-Tailored Clone Detection for IEC 61131-3 Programming Languages

by   Kamil Rosiak, et al.

Automated production systems (aPS) are highly customized systems that consist of hardware and software. Such aPS are controlled by a programmable logic controller (PLC), often in accordance with the IEC 61131-3 standard that divides system implementation into so-called program organization units (POUs) as the smallest software unit and is comprised of multiple textual and graphical programming languages that can be arbitrarily nested. A common practice during the development of such systems is reusing implementation artifacts by copying, pasting, and then modifying code. This approach is referred to as code cloning. It is used on a fine-granular level where a POU is cloned within a system variant. It is also applied on the coarse-granular system level, where the entire system is cloned and adapted to create a system variant, for example for another customer. This ad hoc practice for the development of variants is commonly referred to as clone-and-own. It allows the fast development of variants to meet varying customer requirements or altered regulatory guidelines. However, clone-and-own is a non-sustainable approach and does not scale with an increasing number of variants. It has a detrimental effect on the overall quality of a software system, such as the propagation of bugs to other variants, which harms maintenance. In order to support the effective development and maintenance of such systems, a detailed code clone analysis is required. On the one hand, an analysis of code clones within a variant (i.e., clone detection in the classical sense) supports experts in refactoring respective code into library components. On the other hand, an analysis of commonalities and differences between cloned variants (i.e., variability analysis) supports the maintenance and further reuse and facilitates the migration of variants into a software product line (SPL).



There are no comments yet.


page 9

page 11

page 15


Extractive Multi Product-Line Engineering

Cloning is a general approach to create new functionality within variant...

Automatic and Efficient Variability-Aware Lifting of Functional Programs

A software analysis is a computer program that takes some representation...

Information Systems Development and Evolution: A replication study on work distribution in Norwegian Organizations

The information systems landscape is at first sight very different from ...

IsiSPL: Toward an Automated Reactive Approach to build Software Product Lines

Over the past decades, Software Product Lines (SPLs) have demonstrated t...

Duplicated Code Pattern Mining in Visual Programming Languages

Visual Programming Languages (VPLs), coupled with the high-level abstrac...

Seamless Variability Management With the Virtual Platform

Customization is a general trend in software engineering, demanding syst...

A Generator Framework For Evolving Variant-Rich Software

Evolving software is challenging, even more when it exists in many diffe...
This week in AI

Get the week's most popular data science and artificial intelligence research sent straight to your inbox every Saturday.