Fine-grained Language Composition: A Case Study

Although run-time language composition is common, it normally takes the form of a crude Foreign Function Interface (FFI). While useful, such compositions tend to be coarse-grained and slow. In this paper we introduce a novel fine-grained syntactic composition of PHP and Python which allows users to embed each language inside the other, including referencing variables across languages. This composition raises novel design and implementation challenges. We show that good solutions can be found to the design challenges; and that the resulting implementation imposes an acceptable performance overhead of, at most, 2.6x.Comment: 27 pages, 4 tables, 5 figure

Fine-grained Language Composition: A Case Study (Artifact)

This artifact is based on: PyHyp, a language composition of PHP and Python using meta-tracing; and Eco, a language composition editor. The provided package is designed to support the experiments, case studies, and demos detailed in the companion paper