Refactoring delta-oriented software product lines

Schulze, Sandro; Richers, Oliver; Schaefer, Ina

doi:10.1145/2451436.2451446

Cited by 34 publications

(29 citation statements)

References 17 publications

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“…Schulze et al also propose a refactoring catalog for delta-oriented (DOP) product lines (Schulze et al, 2013b), implemented in the context of an Eclipse plugin. They propose code smells that might be useful for identifying opportunities for applying product line refactorings.…”

Section: Related Workmentioning

confidence: 99%

Safe evolution templates for software product lines

Neves

Borba

Alves

et al. 2015

Journal of Systems and Software

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Section: Related Workmentioning

confidence: 99%

Safe evolution templates for software product lines

Neves

Borba

Alves

et al. 2015

Journal of Systems and Software

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“…In a broader sense, our approach is related to foundational work on refactoring and anti-patterns/smells [20,28,31,39]. However, these smells either lack the notion of variability in code [20,28] or are specifically tailored to a concrete variability mechanism [31,39].…”

Section: Related Workmentioning

confidence: 99%

“…However, these smells either lack the notion of variability in code [20,28] or are specifically tailored to a concrete variability mechanism [31,39]. In contrast, our smells explicitly take variability into account.…”

Section: Related Workmentioning

confidence: 99%

Code Smells Revisited

Fenske

Schulze

2015

Proceedings of the Ninth International Workshop on Variability Modelling of Software-Intensive Systems

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Highly-configurable software systems (also called software product lines) gain momentum in both, academia and industry. For instance, the Linux kernel comes with over 12 000 configuration options and thus, can be customized to run on nearly every kind of system. To a large degree, this configurability is achieved through variable code structures, for instance, using conditional compilation. Such source code variability adds a new dimension of complexity, thus giving rise to new possibilities for design flaws. Code smells are an established concept to describe design flaws or decay in source code. However, existing smells have no notion of variability and thus do not support flaws regarding variable code structures. In this paper, we propose an initial catalog of four variability-aware code smells. We discuss the appearance and negative effects of these smells and present code examples from real-world systems. To evaluate our catalog, we have conducted a survey amongst 15 researchers from the field of software product lines. The results confirm that our proposed smells (a) have been observed in existing product lines and (b) are considered to be problematic for common software development activities, such as program comprehension, maintenance, and evolution.

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“…While there have been some proposals for variability-aware refactoring [50], [51], [52]-all based on academic languages and tools-we go beyond that in supporting the full power of C and CPP. We developed the refactoring engine MORPHEUS that, exemplary, implements the three standard refactorings RENAME IDENTIFIER, EXTRACT FUNCTION, and INLINE FUNCTION.…”

Section: Introductionmentioning

confidence: 99%

Morpheus: Variability-Aware Refactoring in the Wild

Liebig

Apel

Janker

et al. 2015

2015 IEEE/ACM 37th IEEE International Conference on Software Engineering

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Abstract-Today, many software systems are configurable with conditional compilation. Just like any software system, configurable systems need to be refactored in their evolution, but their inherent variability induces an additional dimension of complexity that is not addressed well by current academic and industrial refactoring engines. To improve the state of the art, we propose a variability-aware refactoring approach that relies on a canonical variability representation and recent work on variability-aware analysis. The goal is to preserve the behavior of all variants of a configurable system, without compromising general applicability and scalability. To demonstrate practicality, we developed MORPHEUS, a sound, variability-aware refactoring engine for C code with preprocessor directives. We applied MORPHEUS to three substantial real-world systems (BUSYBOX, OPENSSL, and SQLITE) showing that it scales reasonably well, despite of its heavy reliance on satisfiability solvers. By extending a standard approach of testing refactoring engines with support for variability, we provide evidence for the correctness of the refactorings implemented.

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Refactoring delta-oriented software product lines

Cited by 34 publications

References 17 publications

Safe evolution templates for software product lines

Safe evolution templates for software product lines

Code Smells Revisited

Morpheus: Variability-Aware Refactoring in the Wild

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