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// One can set onPop handlers on some frames but not others.
var g = newGlobal({newCompartment: true});
g.eval("function f(n) { if (n > 0) f(n-1); else debugger; }");
var dbg = new Debugger(g);
var log;
Debugger.Frame.prototype.nthOlder = function nthOlder(n) {
var f = this;
while (n-- > 0)
f = f.older;
return f;
};
dbg.onEnterFrame = function handleEnter(f) {
log += "(" + f.arguments[0];
};
function makePopHandler(n) {
return function handlePop(c) {
log += ")" + this.arguments[0];
assertEq(this.arguments[0], n);
};
}
dbg.onDebuggerStatement = function handleDebugger(f) {
// Set onPop handers on some frames, and leave others alone. Vary the
// spacing.
f.nthOlder(2).onPop = makePopHandler(2);
f.nthOlder(3).onPop = makePopHandler(3);
f.nthOlder(5).onPop = makePopHandler(5);
f.nthOlder(8).onPop = makePopHandler(8);
f.nthOlder(13).onPop = makePopHandler(13);
};
log = '';
g.f(20);
assertEq(log, "(20(19(18(17(16(15(14(13(12(11(10(9(8(7(6(5(4(3(2(1(0)2)3)5)8)13");