1// Copyright 2012 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28// Flags: --expose-debug-as debug
29
30// Get the Debug object exposed from the debug context global object.
31var Debug = debug.Debug;
32
33function CheckScope(scope_mirror, scope_expectations, expected_scope_type) {
34  assertEquals(expected_scope_type, scope_mirror.scopeType());
35
36  var scope_object = scope_mirror.scopeObject().value();
37
38  for (var name in scope_expectations) {
39    var actual = scope_object[name];
40    var expected = scope_expectations[name];
41    assertEquals(expected, actual);
42  }
43}
44
45// A copy of the scope types from mirror-debugger.js.
46var ScopeType = { Global: 0,
47                  Local: 1,
48                  With: 2,
49                  Closure: 3,
50                  Catch: 4,
51                  Block: 5 };
52
53var f1 = (function F1(x) {
54  function F2(y) {
55    var z = x + y;
56    with ({w: 5, v: "Capybara"}) {
57      var F3 = function(a, b) {
58        function F4(p) {
59          return p + a + b + z + w + v.length;
60        }
61        return F4;
62      }
63      return F3(4, 5);
64    }
65  }
66  return F2(17);
67})(5);
68
69var mirror = Debug.MakeMirror(f1);
70
71assertEquals(5, mirror.scopeCount());
72
73CheckScope(mirror.scope(0), { a: 4, b: 5 }, ScopeType.Closure);
74CheckScope(mirror.scope(1), { w: 5, v: "Capybara" }, ScopeType.With);
75CheckScope(mirror.scope(2), { y: 17, z: 22 }, ScopeType.Closure);
76CheckScope(mirror.scope(3), { x: 5 }, ScopeType.Closure);
77CheckScope(mirror.scope(4), {}, ScopeType.Global);
78
79var f2 = function() { return 5; }
80
81var mirror = Debug.MakeMirror(f2);
82
83assertEquals(1, mirror.scopeCount());
84
85CheckScope(mirror.scope(0), {}, ScopeType.Global);
86
87var f3 = (function F1(invisible_parameter) {
88  var invisible1 = 1;
89  var visible1 = 10;
90  return (function F2() {
91    var invisible2 = 2;
92    return (function F3() {
93      var visible2 = 20;
94      var invisible2 = 3;
95      return (function () {return visible1 + visible2 + visible1a;});
96    })();
97  })();
98})(5);
99
100var mirror = Debug.MakeMirror(f3);
101
102assertEquals(3, mirror.scopeCount());
103
104CheckScope(mirror.scope(0), { visible2: 20 }, ScopeType.Closure);
105CheckScope(mirror.scope(1), { visible1: 10 }, ScopeType.Closure);
106CheckScope(mirror.scope(2), {}, ScopeType.Global);
107
108
109var f4 = (function One() {
110  try {
111    throw "I'm error 1";
112  } catch (e1) {
113    try {
114      throw "I'm error 2";
115    } catch (e2) {
116      return function GetError() {
117        return e1 + e2;
118      };
119    }
120  }
121})();
122
123var mirror = Debug.MakeMirror(f4);
124
125assertEquals(3, mirror.scopeCount());
126
127CheckScope(mirror.scope(0), { e2: "I'm error 2" }, ScopeType.Catch);
128CheckScope(mirror.scope(1), { e1: "I'm error 1" }, ScopeType.Catch);
129CheckScope(mirror.scope(2), {}, ScopeType.Global);
130
131
132var f5 = (function Raz(p1, p2) {
133  var p3 = p1 + p2;
134  return (function() {
135    var p4 = 20;
136    var p5 = 21;
137    var p6 = 22;
138    return eval("(function(p7){return p1 + p4 + p6 + p7})");
139  })();
140})(1,2);
141
142var mirror = Debug.MakeMirror(f5);
143
144assertEquals(3, mirror.scopeCount());
145
146CheckScope(mirror.scope(0), { p4: 20, p6: 22 }, ScopeType.Closure);
147CheckScope(mirror.scope(1), { p1: 1 }, ScopeType.Closure);
148CheckScope(mirror.scope(2), {}, ScopeType.Global);
149
150
151function CheckNoScopeVisible(f) {
152  var mirror = Debug.MakeMirror(f);
153  assertEquals(0, mirror.scopeCount());
154}
155
156CheckNoScopeVisible(Number);
157
158CheckNoScopeVisible(Function.toString);
159
160// This getter is known to be implemented as closure.
161CheckNoScopeVisible(new Error().__lookupGetter__("stack"));
162