methDefnGen.js - mozsearch

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var BUGNUMBER = 924672;

var summary = 'Method Definitions - Generators'

print(BUGNUMBER + ": " + summary);

// Function definitions.

function syntaxError (script) {

    try {

        Function(script);

    } catch (e) {

        if (e instanceof SyntaxError) {

            return;

    throw new Error('Expected syntax error: ' + script);

// Tests begin.

syntaxError("{*a(){}}");

syntaxError("b = {*(){}");

syntaxError("b = {*{}");

syntaxError("b = {*){}");

syntaxError("b = {*({}");

syntaxError("b = {*(){");

syntaxError("b = {*()}");

syntaxError("b = {*a(");

syntaxError("b = {*a)");

syntaxError("b = {*a(}");

syntaxError("b = {*a)}");

syntaxError("b = {*a()");

syntaxError("b = {*a()}");

syntaxError("b = {*a(){}");

syntaxError("b = {*a){}");

syntaxError("b = {*a}}");

syntaxError("b = {*a{}}");

syntaxError("b = {*a({}}");

syntaxError("b = {*a@(){}}");

syntaxError("b = {*@(){}}");

syntaxError("b = {*get a(){}}");

syntaxError("b = {get *a(){}}");

syntaxError("b = {get a*(){}}");

syntaxError("b = {*set a(c){}}");

syntaxError("b = {set *a(c){}}");

syntaxError("b = {set a*(c){}}");

syntaxError("b = {*a : 1}");

syntaxError("b = {a* : 1}");

syntaxError("b = {a :* 1}");

syntaxError("b = {a*(){}}");

// Generator methods.

b = { * g() {

    var a = { [yield 1]: 2, [yield 2]: 3};

    return a;

} }

var it = b.g();

var next = it.next();

assertEq(next.done, false);

assertEq(next.value, 1);

next = it.next("hello");

assertEq(next.done, false);

assertEq(next.value, 2);

next = it.next("world");

assertEq(next.done, true);

assertEq(next.value.hello, 2);

assertEq(next.value.world, 3);

// prototype property

assertEq(b.g.hasOwnProperty("prototype"), true);

// Strict mode

a = {*b(c){"use strict";yield c;}};

assertEq(a.b(1).next().value, 1);

a = {*["b"](c){"use strict";return c;}};

assertEq(a.b(1).next().value, 1);

// Generators should not have [[Construct]]

a = {*g() { yield 1; }}

assertThrowsInstanceOf(() => { new a.g }, TypeError);

if (typeof reportCompare === 'function')

    reportCompare(0, 0, "ok");