Does rhino supports yield statements ?

[eugenhoro]

I am trying to build AST of the following javascript (es6) file using the code below and I am getting an empty AST.

function * foo(x) {
while (true) {
x = x * 2;
yield x;
}
}

var g = foo(2);
console.log('start')
console.log(g.next())
console.log(g.next())
console.log(g.next())

---

The code for buiding the AST :

    String fileContent = String.join(System.lineSeparator(), getFileLines(file));
    AstRoot top = null;
    Reporter reporter = new Reporter();
    CompilerEnvirons compilerEnv = new CompilerEnvirons();
    compilerEnv.setErrorReporter(reporter);
    compilerEnv.setReservedKeywordAsIdentifier(true);
    compilerEnv.setIdeMode(true);
    top = new Parser(compilerEnv, compilerEnv.getErrorReporter()).parse(fileContent, file, 1);

[lfmunoz]

    val script= """
       function execute() {
            var c = 'a'.charCodeAt(0);
            while (c <= 'z'.charCodeAt(0)) {
                yield String.fromCharCode(c++);
            }
        }
        for (let h in execute()) out.println(h)
    """.trimIndent()

Don't use * to define the generator function.

Reference #396

[gbrail]

There are no ES6-style generators in Rhino yet. There has been an incomplete PR from a long time ago but it's a pretty complex set of changes and doesn't quite work.

Anyone who is looking for a project might want to check out the incomplete work that is referenced in Issue 411:

#411