OLD | NEW |
(Empty) | |
| 1 // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --expose-debug-as debug |
| 6 |
| 7 // Test that debug-evaluate can find the correct this value for an arrow |
| 8 // function, if "this" is referenced within the arrow function scope. |
| 9 |
| 10 Debug = debug.Debug |
| 11 |
| 12 var break_count = 0; |
| 13 var exception = null; |
| 14 |
| 15 function listener(event, exec_state, event_data, data) { |
| 16 if (event != Debug.DebugEvent.Break) return; |
| 17 try { |
| 18 for (var i = 0; i < exec_state.frameCount() - 1; i++) { |
| 19 var frame = exec_state.frame(i); |
| 20 var this_value = frame.evaluate("this").value(); |
| 21 var expected = frame.sourceLineText().match(/\/\/ (.*$)/)[1]; |
| 22 print(expected, this_value, frame.sourceLineText()); |
| 23 assertEquals(String(expected), String(this_value)); |
| 24 } |
| 25 break_count++; |
| 26 } catch (e) { |
| 27 exception = e; |
| 28 print(e + e.stack); |
| 29 } |
| 30 } |
| 31 |
| 32 // Context-allocated receiver. |
| 33 function f() { |
| 34 debugger; // foo |
| 35 return () => { |
| 36 debugger; // foo |
| 37 with ({}) { |
| 38 return () => { |
| 39 debugger; // foo |
| 40 try { |
| 41 throw new Error(); |
| 42 } catch (e) { |
| 43 return () => { |
| 44 (() => this); // bind this. |
| 45 debugger; // foo |
| 46 return () => { |
| 47 debugger; // undefined |
| 48 return g.call("goo"); // undefined |
| 49 } |
| 50 }; |
| 51 } |
| 52 }; |
| 53 } |
| 54 }; |
| 55 } |
| 56 |
| 57 // Stack-allocated receiver. |
| 58 function g() { |
| 59 debugger; // goo |
| 60 return () => { |
| 61 debugger; // undefined |
| 62 with ({}) { |
| 63 return () => { |
| 64 debugger; // undefined |
| 65 try { |
| 66 throw new Error(); |
| 67 } catch (e) { |
| 68 return () => { |
| 69 debugger; // undefined |
| 70 return f.call("foo"); // undefined |
| 71 }; |
| 72 } |
| 73 }; |
| 74 } |
| 75 }; |
| 76 } |
| 77 |
| 78 Debug.setListener(listener); |
| 79 |
| 80 var h = f.call("foo"); |
| 81 for (var i = 0; i < 20; i++) h = h(); |
| 82 var h = g.call("goo"); |
| 83 for (var i = 0; i < 20; i++) h = h(); |
| 84 |
| 85 function x() { |
| 86 (() => this); // bind this. |
| 87 function y() { |
| 88 (() => { |
| 89 (() => this); // bind this. |
| 90 debugger; // Y |
| 91 })(); // Y |
| 92 } |
| 93 y.call("Y"); // X |
| 94 } |
| 95 x.call("X"); |
| 96 |
| 97 function u() { |
| 98 (() => this); |
| 99 function v() { |
| 100 (() => { |
| 101 debugger; // undefined |
| 102 })(); // V |
| 103 } |
| 104 v.call("V"); // U |
| 105 } |
| 106 u.call("U"); |
| 107 |
| 108 (() => { |
| 109 (() => this); |
| 110 debugger; // [object global] |
| 111 })(); |
| 112 |
| 113 Debug.setListener(null); |
| 114 |
| 115 assertEquals(55, break_count); |
| 116 assertNull(exception); |
OLD | NEW |