tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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Frame-offset-03.js (1574B)

      1 // frame.offset works in generators.
      2 
      3 load(libdir + "asserts.js");
      4 
      5 var g = newGlobal({ newCompartment: true });
      6 var dbg = new Debugger(g);
      7 g.eval(`
      8 function* f() {
      9  yield 11;
     10  yield 21;
     11  yield 31;
     12 }
     13 `);
     14 
     15 const ranges = [];
     16 let script;
     17 let frame;
     18 dbg.onEnterFrame = function(f) {
     19  if (frame) {
     20    assertEq(f, frame);
     21    assertEq(f.script, script);
     22  } else {
     23    frame = f;
     24    script = f.script;
     25    assertEq(frame instanceof Debugger.Frame, true);
     26    assertEq(script instanceof Debugger.Script, true);
     27  }
     28 
     29  const range = [script.getOffsetMetadata(frame.offset).lineNumber, null];
     30  ranges.push(range);
     31  f.onPop = () => {
     32    range[1] = script.getOffsetMetadata(frame.offset).lineNumber;
     33  };
     34 };
     35 
     36 const it = g.f();
     37 
     38 assertEq(ranges.length, 1);
     39 assertEq(ranges[0][0], 2);
     40 assertEq(ranges[0][1], 2);
     41 assertEq(script.getOffsetMetadata(frame.offset).lineNumber, 2);
     42 
     43 it.next();
     44 
     45 assertEq(ranges.length, 2);
     46 assertEq(ranges[1][0], 2);
     47 assertEq(ranges[1][1], 3);
     48 assertEq(script.getOffsetMetadata(frame.offset).lineNumber, 3);
     49 
     50 it.next();
     51 
     52 assertEq(ranges.length, 3);
     53 assertEq(ranges[2][0], 3);
     54 assertEq(ranges[2][1], 4);
     55 assertEq(script.getOffsetMetadata(frame.offset).lineNumber, 4);
     56 
     57 it.next();
     58 
     59 assertEq(ranges.length, 4);
     60 assertEq(ranges[3][0], 4);
     61 assertEq(ranges[3][1], 5);
     62 assertEq(script.getOffsetMetadata(frame.offset).lineNumber, 5);
     63 
     64 it.next();
     65 
     66 assertEq(ranges.length, 5);
     67 assertEq(ranges[4][0], 5);
     68 assertEq(ranges[4][1], 6);
     69 
     70 // The frame has finished evaluating, so the callee is no longer accessible.
     71 assertThrowsInstanceOf(() => frame.offset, Error);