DeepAI
Log In Sign Up

Unsupervised Translation of Programming Languages

06/05/2020
by   Marie-Anne Lachaux, et al.
0

A transcompiler, also known as source-to-source translator, is a system that converts source code from a high-level programming language (such as C++ or Python) to another. Transcompilers are primarily used for interoperability, and to port codebases written in an obsolete or deprecated language (e.g. COBOL, Python 2) to a modern one. They typically rely on handcrafted rewrite rules, applied to the source code abstract syntax tree. Unfortunately, the resulting translations often lack readability, fail to respect the target language conventions, and require manual modifications in order to work properly. The overall translation process is timeconsuming and requires expertise in both the source and target languages, making code-translation projects expensive. Although neural models significantly outperform their rule-based counterparts in the context of natural language translation, their applications to transcompilation have been limited due to the scarcity of parallel data in this domain. In this paper, we propose to leverage recent approaches in unsupervised machine translation to train a fully unsupervised neural transcompiler. We train our model on source code from open source GitHub projects, and show that it can translate functions between C++, Java, and Python with high accuracy. Our method relies exclusively on monolingual source code, requires no expertise in the source or target languages, and can easily be generalized to other programming languages. We also build and release a test set composed of 852 parallel functions, along with unit tests to check the correctness of translations. We show that our model outperforms rule-based commercial baselines by a significant margin.

READ FULL TEXT
10/13/2021

Leveraging Automated Unit Tests for Unsupervised Code Translation

With little to no parallel data available for programming languages, uns...
03/23/2021

RPT: Effective and Efficient Retrieval of Program Translations from Big Code

Program translation is a growing demand in software engineering. Manual ...
04/01/2019

STYLE-ANALYZER: fixing code style inconsistencies with interpretable unsupervised algorithms

Source code reviews are manual, time-consuming, and expensive. Human inv...
05/23/2022

Summarize and Generate to Back-translate: Unsupervised Translation of Programming Languages

Back-translation is widely known for its effectiveness for neural machin...
03/31/2019

Exploring the Generality of a Java-based Loop Action Model for the Quorum Programming Language

Many algorithmic steps require more than one statement to implement, but...
10/19/2020

PySBD: Pragmatic Sentence Boundary Disambiguation

In this paper, we present a rule-based sentence boundary disambiguation ...
10/11/2021

Using Document Similarity Methods to create Parallel Datasets for Code Translation

Translating source code from one programming language to another is a cr...