The Tor Browser: js/src/jit-test/tests/debug/Frame-onStep-06.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 // After returning from an implicit toString call, the calling frame's onStep

     2 // hook fires.

     4 var g = newGlobal();

     5 g.eval("var originalX = {toString: function () { debugger; log += 'x'; return 1; }};\n");

     7 var dbg = Debugger(g);

     8 dbg.onDebuggerStatement = function (frame) {

     9     g.log += 'd';

    10     frame.older.onStep = function () {

    11         if (!g.log.match(/[sy]$/))

    12             g.log += 's';

    13     };

    14 };

    16 // expr is an expression that will trigger an implicit toString call.

    17 function check(expr) {

    18     g.log = '';

    19     g.x = g.originalX;

    20     g.eval(expr + ";\n" +

    21 	   "log += 'y';\n");

    22     assertEq(g.log, 'dxsy');

    23 }

    25 check("'' + x");

    26 check("0 + x");

    27 check("0 - x");

    28 check("0 * x");

    29 check("0 / x");

    30 check("0 % x");

    31 check("+x");

    32 check("x in {}");

    33 check("x++");

    34 check("++x");

    35 check("x--");

    36 check("--x");

    37 check("x < 0");

    38 check("x > 0");

    39 check("x >= 0");

    40 check("x <= 0");

    41 check("x == 0");

    42 check("x != 0");

    43 check("x & 1");

    44 check("x | 1");

    45 check("x ^ 1");

    46 check("~x");

    47 check("x << 1");

    48 check("x >> 1");

    49 check("x >>> 1");

    51 g.eval("function lastStep() { throw StopIteration; }");

    52 g.eval("function emptyIterator() { debugger; log += 'x'; return { next: lastStep }; }");

    53 g.eval("var customEmptyIterator = { __iterator__: emptyIterator };");

    54 g.log = '';

    55 g.eval("for (i in customEmptyIterator);\n" +

    56        "log += 'y';\n");

    57 assertEq(g.log, 'dxsy');

    59 g.eval("var getter = { get x() { debugger; return log += 'x'; } }");

    60 check("getter.x");

    62 g.eval("var setter = { set x(v) { debugger; return log += 'x'; } }");

    63 check("setter.x = 1");

    65 g.eval("Object.defineProperty(this, 'thisgetter', { get: function() { debugger; log += 'x'; }});");

    66 check("thisgetter");

The Tor Browser / file revision