JWebAssembly is a Java to WebAssembly Compiler. It uses Java class files as input.
Currently it is only a proof of concept.
In the future there should be a Gradle plugin to easy integrate it in the build process and a Eclipse build command to see compiler errors in in the IDE.
JWebAssembly requires Java SE 8 or higher. It is tested with Java SE 8 on travis-ci.org.
To export a Java function to make it accessible from JavaScript you need add the annotation org.webassembly.annotation.Export
import org.webassembly.annotation.Export;
@Export
public static int add( int a, int b ) {
return a + b;
}In version 1 of WebAssembly you can only compile:
- static methods
- use the data types int, long float and double