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 |