Publication Type

Conference Proceeding Article

Version

acceptedVersion

Publication Date

8-2019

Abstract

To save effort, developers often translate programs from one programming language to another, instead of implementing it from scratch. Translating application program interfaces (APIs) used in one language to functionally equivalent ones available in another language is an important aspect of program translation. Existing approaches facilitate the translation by automatically identifying the API mappings across programming languages. However, these approaches still require large amount of parallel corpora, ranging from pairs of APIs or code fragments that are functionally equivalent, to similar code comments. To minimize the need of parallel corpora, this paper aims at an automated approach that can map APIs across languages with much less a priori knowledge than other approaches. The approach is based on an realization of the notion of domain adaption, combined with code embedding, to better align two vector spaces. Taking as input large sets of programs, our approach first generates numeric vector representations of the programs (including the APIs used in each language), and it adapts generative adversarial networks (GAN) to align the vectors in different spaces of two languages. For a better alignment, we initialize the GAN with parameters derived from API mapping seeds that can be identified accurately with a simple automatic signature-based matching heuristic. Then the crosslanguage API mappings can be identified via nearest-neighbors queries in the aligned vector spaces. We have implemented the approach (SAR, named after three main technical components in the approach) in a prototype for mapping APIs across Java and C# programs. Our evaluation on about 2 million Java files and 1 million C# files shows that the approach can achieve 54% and 82% mapping accuracy in its top-1 and top-10 API mapping results with only 257 automatically identified seeds, more accurate than other approaches using the same or much more mapping seeds.

Keywords

software maintenance, language mapping, word2vec, syntactic structure, program translation

Discipline

Software Engineering

Research Areas

Software and Cyber-Physical Systems

Publication

Proceedings of the 27th ACM Joint European Software Engineering Conference and Symposium on the Foundations of Software Engineering: ESEC/FSE '19, Tallinn, Estonia, 2019 August 26-30

Last Page

1

ISBN

9781450355728

Identifier

10.1145/3338906.3338924

Publisher

ACM

City or Country

Tallinn, Estonia

Comments

authors' own version

Additional URL

https://doi.org/10.1145/3338906.3338924

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