onEnterFrame-03.js

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// frame.eval works in the enterFrame hook.

// It triggers the enterFrame hook again, recursively. (!)

var g = newGlobal({newCompartment: true});

g.a = ".";

var dbg = Debugger(g);

var nestCount = 0, N = 9;

var log = "";

dbg.onEnterFrame = function (frame) {

    assertEq(frame.type, "eval");

    if (nestCount < N) {

        log += '(';

        nestCount++;

        var a = frame.eval("a").return;

        log += a;

        nestCount--;

        log += ')';

};

assertEq(g.eval("a"), ".");

assertEq(log, Array(N + 1).join("(") + Array(N + 1).join(".)"));