js/src/jit-test/tests/debug/Frame-onStep-06.js

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rw-r--r--

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

michael@0 1 // After returning from an implicit toString call, the calling frame's onStep
michael@0 2 // hook fires.
michael@0 3
michael@0 4 var g = newGlobal();
michael@0 5 g.eval("var originalX = {toString: function () { debugger; log += 'x'; return 1; }};\n");
michael@0 6
michael@0 7 var dbg = Debugger(g);
michael@0 8 dbg.onDebuggerStatement = function (frame) {
michael@0 9 g.log += 'd';
michael@0 10 frame.older.onStep = function () {
michael@0 11 if (!g.log.match(/[sy]$/))
michael@0 12 g.log += 's';
michael@0 13 };
michael@0 14 };
michael@0 15
michael@0 16 // expr is an expression that will trigger an implicit toString call.
michael@0 17 function check(expr) {
michael@0 18 g.log = '';
michael@0 19 g.x = g.originalX;
michael@0 20 g.eval(expr + ";\n" +
michael@0 21 "log += 'y';\n");
michael@0 22 assertEq(g.log, 'dxsy');
michael@0 23 }
michael@0 24
michael@0 25 check("'' + x");
michael@0 26 check("0 + x");
michael@0 27 check("0 - x");
michael@0 28 check("0 * x");
michael@0 29 check("0 / x");
michael@0 30 check("0 % x");
michael@0 31 check("+x");
michael@0 32 check("x in {}");
michael@0 33 check("x++");
michael@0 34 check("++x");
michael@0 35 check("x--");
michael@0 36 check("--x");
michael@0 37 check("x < 0");
michael@0 38 check("x > 0");
michael@0 39 check("x >= 0");
michael@0 40 check("x <= 0");
michael@0 41 check("x == 0");
michael@0 42 check("x != 0");
michael@0 43 check("x & 1");
michael@0 44 check("x | 1");
michael@0 45 check("x ^ 1");
michael@0 46 check("~x");
michael@0 47 check("x << 1");
michael@0 48 check("x >> 1");
michael@0 49 check("x >>> 1");
michael@0 50
michael@0 51 g.eval("function lastStep() { throw StopIteration; }");
michael@0 52 g.eval("function emptyIterator() { debugger; log += 'x'; return { next: lastStep }; }");
michael@0 53 g.eval("var customEmptyIterator = { __iterator__: emptyIterator };");
michael@0 54 g.log = '';
michael@0 55 g.eval("for (i in customEmptyIterator);\n" +
michael@0 56 "log += 'y';\n");
michael@0 57 assertEq(g.log, 'dxsy');
michael@0 58
michael@0 59 g.eval("var getter = { get x() { debugger; return log += 'x'; } }");
michael@0 60 check("getter.x");
michael@0 61
michael@0 62 g.eval("var setter = { set x(v) { debugger; return log += 'x'; } }");
michael@0 63 check("setter.x = 1");
michael@0 64
michael@0 65 g.eval("Object.defineProperty(this, 'thisgetter', { get: function() { debugger; log += 'x'; }});");
michael@0 66 check("thisgetter");

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