RelateJS is a proof-of-concept relational JavaScript interpreter capable of code synthesis. Powered by Racket and miniKanren.
Currently, only a subset of JavaScript is supported, and programs have to be expressed in the S-expression form.
Relational programming is a paradigm where programs are expressed through relations between data. Relational programs do not differentiate between input and output data, simply trying to fill "holes" within their relations.
In the case of RelateJS, we can either run the interpreter forward to execute JavaScript code or backwards to synthesize JavaScript source code that evaluates to a certain value.
We introduce a miniKanren relational interpreter for a subset of JavaScript, capable of synthesizing imperative, S-expression JavaScript code to solve small problems that even human programmers might find tricky. We write a relational parser that parses S-expression JavaScript to a intermediate language called LambdaJS, and a relational interpreter for LambdaJS. We show that program synthesis is feasible through the composition of these two disjoint relations for parsing and evaluation. Finally, we discuss three somewhat surprising performance characteristics of composing these two relations.
Created for miniKanren 2020 workshop
- Racket interpreter (Was tested on racket 7.4)
To set up the repo and run examples from the "JavaScript Synthesis Experiments" section of the paper, type the following into terminal:
git clone https://github.com/Artish357/RelateJS
cd RelateJS
raco test *tests.rktLook into paper-tests.rkt for examples.
MIT