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