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
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11//       with the distribution.
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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 debug/mirrors.js.
46var ScopeType = { Global: 0,
47                  Local: 1,
48                  With: 2,
49                  Closure: 3,
50                  Catch: 4,
51                  Block: 5,
52                  Script: 6};
53
54var f1 = (function F1(x) {
55  function F2(y) {
56    var z = x + y;
57    with ({w: 5, v: "Capybara"}) {
58      var F3 = function(a, b) {
59        function F4(p) {
60          return p + a + b + z + w + v.length;
61        }
62        return F4;
63      }
64      return F3(4, 5);
65    }
66  }
67  return F2(17);
68})(5);
69
70var mirror = Debug.MakeMirror(f1);
71
72assertEquals(6, mirror.scopeCount());
73
74CheckScope(mirror.scope(0), { a: 4, b: 5 }, ScopeType.Closure);
75CheckScope(mirror.scope(1), { w: 5, v: "Capybara" }, ScopeType.With);
76CheckScope(mirror.scope(2), { y: 17, z: 22 }, ScopeType.Closure);
77CheckScope(mirror.scope(3), { x: 5 }, ScopeType.Closure);
78CheckScope(mirror.scope(4), {}, ScopeType.Script);
79CheckScope(mirror.scope(5), {}, ScopeType.Global);
80
81var f2 = function() { return 5; }
82
83var mirror = Debug.MakeMirror(f2);
84
85assertEquals(2, mirror.scopeCount());
86
87CheckScope(mirror.scope(0), {}, ScopeType.Script);
88CheckScope(mirror.scope(1), {}, ScopeType.Global);
89
90var f3 = (function F1(invisible_parameter) {
91  var invisible1 = 1;
92  var visible1 = 10;
93  return (function F2() {
94    var invisible2 = 2;
95    return (function F3() {
96      var visible2 = 20;
97      var invisible2 = 3;
98      return (function () {return visible1 + visible2 + visible1a;});
99    })();
100  })();
101})(5);
102
103var mirror = Debug.MakeMirror(f3);
104
105assertEquals(4, mirror.scopeCount());
106
107CheckScope(mirror.scope(0), { visible2: 20 }, ScopeType.Closure);
108CheckScope(mirror.scope(1), { visible1: 10 }, ScopeType.Closure);
109CheckScope(mirror.scope(2), {}, ScopeType.Script);
110CheckScope(mirror.scope(3), {}, ScopeType.Global);
111
112
113var f4 = (function One() {
114  try {
115    throw "I'm error 1";
116  } catch (e1) {
117    try {
118      throw "I'm error 2";
119    } catch (e2) {
120      return function GetError() {
121        return e1 + e2;
122      };
123    }
124  }
125})();
126
127var mirror = Debug.MakeMirror(f4);
128
129assertEquals(4, mirror.scopeCount());
130
131CheckScope(mirror.scope(0), { e2: "I'm error 2" }, ScopeType.Catch);
132CheckScope(mirror.scope(1), { e1: "I'm error 1" }, ScopeType.Catch);
133CheckScope(mirror.scope(2), {}, ScopeType.Script);
134CheckScope(mirror.scope(3), {}, ScopeType.Global);
135
136
137var f5 = (function Raz(p1, p2) {
138  var p3 = p1 + p2;
139  return (function() {
140    var p4 = 20;
141    var p5 = 21;
142    var p6 = 22;
143    return eval("(function(p7){return p1 + p4 + p6 + p7})");
144  })();
145})(1,2);
146
147var mirror = Debug.MakeMirror(f5);
148
149assertEquals(4, mirror.scopeCount());
150
151CheckScope(mirror.scope(0), { p4: 20, p6: 22 }, ScopeType.Closure);
152CheckScope(mirror.scope(1), { p1: 1 }, ScopeType.Closure);
153CheckScope(mirror.scope(2), {}, ScopeType.Script);
154CheckScope(mirror.scope(3), {}, ScopeType.Global);
155
156
157function CheckNoScopeVisible(f) {
158  var mirror = Debug.MakeMirror(f);
159  assertEquals(0, mirror.scopeCount());
160}
161
162CheckNoScopeVisible(Number);
163
164CheckNoScopeVisible(Function.toString);
165
166// This getter is known to be implemented as closure.
167CheckNoScopeVisible(new Error().__lookupGetter__("stack"));
168