tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Frame-this-06.js (746B)

      1 // Frame.this and evalInFrame with missing this, strict and non-strict.
      2 var g = newGlobal({newCompartment: true});
      3 var dbg = new Debugger(g);
      4 var evalThis, frameThis;
      5 dbg.onEnterFrame = function (frame) {
      6    if (frame.type === "eval")
      7 return;
      8    assertEq(frame.type, "call");
      9    evalThis = frame.eval("this");
     10    frameThis = frame.this;
     11 };
     12 
     13 // Strict, this is primitive.
     14 g.eval("var foo = function() { 'use strict'; }; foo.call(33);");
     15 assertEq(evalThis.return, 33);
     16 assertEq(frameThis, 33);
     17 
     18 // Non-strict, this has to be boxed.
     19 g.eval("var bar = function() { }; bar.call(22);");
     20 assertEq(typeof evalThis.return, "object");
     21 assertEq(evalThis.return.unsafeDereference().valueOf(), 22);
     22 assertEq(frameThis.unsafeDereference().valueOf(), 22);