The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/arguments/defaults-scoping.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,33 @@
     1.4 +var x = 'global';
     1.5 +function f(a=x) {  // local variable x
     1.6 +    var x = 'local';
     1.7 +    return a;
     1.8 +}
     1.9 +assertEq(f(), undefined);
    1.10 +
    1.11 +function g(f=function () { return ++x; }) {  // closes on local variable x
    1.12 +    var x = 0;
    1.13 +    return f;
    1.14 +}
    1.15 +var gf = g();
    1.16 +assertEq(gf(), 1);
    1.17 +assertEq(gf(), 2);
    1.18 +gf = g();
    1.19 +assertEq(gf(), 1);
    1.20 +
    1.21 +function h(f=function (s) { return eval(s); }) {  // closes on local scope
    1.22 +    var x = 'hlocal';
    1.23 +    return f;
    1.24 +}
    1.25 +var hf = h();
    1.26 +assertEq(hf('x'), 'hlocal');
    1.27 +assertEq(hf('f'), hf);
    1.28 +assertEq(hf('var x = 3; x'), 3);
    1.29 +
    1.30 +function j(expr, v=eval(expr)) {
    1.31 +    return v;
    1.32 +}
    1.33 +assertEq(j("expr"), "expr");
    1.34 +assertEq(j("v"), undefined);
    1.35 +assertEq(j("Array"), Array);
    1.36 +assertEq(j("arguments").length, 1);