Frame-onStep-06.js (1339B)
1 // After returning from an implicit toString call, the calling frame's onStep 2 // hook fires. 3 4 var g = newGlobal({newCompartment: true}); 5 g.eval("var originalX = {toString: function () { debugger; log += 'x'; return 1; }};\n"); 6 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 }; 15 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 } 24 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"); 50 51 g.eval("var getter = { get x() { debugger; return log += 'x'; } }"); 52 check("getter.x"); 53 54 g.eval("var setter = { set x(v) { debugger; return log += 'x'; } }"); 55 check("setter.x = 1"); 56 57 g.eval("Object.defineProperty(this, 'thisgetter', { get: function() { debugger; log += 'x'; }});"); 58 check("thisgetter");