https://github.com/pathikrit/babelfish
Invoke other languages from Scala on the JVM
https://github.com/pathikrit/babelfish
jvm scala
Last synced: 2 months ago
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Invoke other languages from Scala on the JVM
- Host: GitHub
- URL: https://github.com/pathikrit/babelfish
- Owner: pathikrit
- License: mit
- Created: 2016-03-02T06:00:44.000Z (over 10 years ago)
- Default Branch: master
- Last Pushed: 2016-03-03T05:04:43.000Z (over 10 years ago)
- Last Synced: 2025-06-28T18:47:43.113Z (about 1 year ago)
- Topics: jvm, scala
- Language: Scala
- Size: 25.4 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# BabelFish [![License][licenseImg]][licenseLink] [![CircleCI][circleCiImg]][circleCiLink] [![Codacy][codacyImg]][codacyLink] [![Gitter][gitterImg]][gitterLink]
`BabelFish` is a [dependency-free](build.sbt) [wrapper](src/main/scala/com/github/pathikrit/babelfish/Evaluator.scala)
around [JSR 223](https://www.jcp.org/en/jsr/detail?id=223) that enables invoking other languages from Scala on the JVM.
Invoking JavaScript:
```scala
val eval = new Evaluator.JavaScript
eval("function sum(a, b) { return a + b; }")
val i = eval.as[Int]("sum(1, 2);")
assert(i + 3 == 6)
```
We can use Scala's [Dynamic](http://www.scala-lang.org/files/archive/nightly/2.12.x/api/2.12.x/scala/Dynamic.html) too to invoke:
```scala
val j: Int = eval.sum(9, 7)
assert(j == 16)
```
We can even invoke `sum` through a Scala trait:
```scala
trait Adder {
def sum(a: Int, b: Int): Int
}
val adder: Adder = eval.as[Adder]
assert(adder.sum(7, 8) == 15)
```
Note that we can invoke `sum` for other types too:
```scala
assert(eval.sum[String]("hello", "world") == "helloworld")
eval.sum[Int]("hello", "world") // Exception!
```
Support for objects:
```scala
val eval = new Evaluator.JavaScript
val rick = eval(s"""
new function () {
this.name = "Rick";
this.age = 28;
this.sayHi = function (friend) {
return "Hello " + friend + "! My name is " + this.name;
}
};
""")
assert(rick.sayHi[String]("Anna") == "Hello Anna! My name is Rick")
assert(rick.age[Int] == 28)
```
We can even eval script files:
```scala
val eval = new Evaluator.JavaScript
val $ = eval.file("scripts/lodash.min.js")
assert($.min[Int](Array(48, 12, 19, 23)) == 12)
```
See the [tests](src/test/scala/com/github/pathikrit/babelfish/BabelFishSpec.scala) for more examples. [![codecov][codecovImg]][codecovLink]
[licenseImg]: https://img.shields.io/github/license/pathikrit/BabelFish.svg
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[licenseLink]: LICENSE
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[codacyImg]: https://img.shields.io/codacy/014bfb25162b469bb0538cca7b4ec18d.svg
[codacyImg2]: https://api.codacy.com/project/badge/grade/014bfb25162b469bb0538cca7b4ec18d
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