| // After returning from an implicit toString call, the calling frame's onStep |
| // hook fires. |
| |
| var g = newGlobal(); |
| g.eval("var originalX = {toString: function () { debugger; log += 'x'; return 1; }};\n"); |
| |
| var dbg = Debugger(g); |
| dbg.onDebuggerStatement = function (frame) { |
| g.log += 'd'; |
| frame.older.onStep = function () { |
| if (!g.log.match(/[sy]$/)) |
| g.log += 's'; |
| }; |
| }; |
| |
| // expr is an expression that will trigger an implicit toString call. |
| function check(expr) { |
| g.log = ''; |
| g.x = g.originalX; |
| g.eval(expr + ";\n" + |
| "log += 'y';\n"); |
| assertEq(g.log, 'dxsy'); |
| } |
| |
| check("'' + x"); |
| check("0 + x"); |
| check("0 - x"); |
| check("0 * x"); |
| check("0 / x"); |
| check("0 % x"); |
| check("+x"); |
| check("x in {}"); |
| check("x++"); |
| check("++x"); |
| check("x--"); |
| check("--x"); |
| check("x < 0"); |
| check("x > 0"); |
| check("x >= 0"); |
| check("x <= 0"); |
| check("x == 0"); |
| check("x != 0"); |
| check("x & 1"); |
| check("x | 1"); |
| check("x ^ 1"); |
| check("~x"); |
| check("x << 1"); |
| check("x >> 1"); |
| check("x >>> 1"); |
| |
| g.eval("function lastStep() { throw StopIteration; }"); |
| g.eval("function emptyIterator() { debugger; log += 'x'; return { next: lastStep }; }"); |
| g.eval("var customEmptyIterator = { __iterator__: emptyIterator };"); |
| g.log = ''; |
| g.eval("for (i in customEmptyIterator);\n" + |
| "log += 'y';\n"); |
| assertEq(g.log, 'dxsy'); |
| |
| g.eval("var getter = { get x() { debugger; return log += 'x'; } }"); |
| check("getter.x"); |
| |
| g.eval("var setter = { set x(v) { debugger; return log += 'x'; } }"); |
| check("setter.x = 1"); |
| |
| g.eval("Object.defineProperty(this, 'thisgetter', { get: function() { debugger; log += 'x'; }});"); |
| check("thisgetter"); |