1// Copyright 2008 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: --allow-natives-syntax --es52_globals
29
30// Make sure that we can introduce global variables (using
31// both var and const) that shadow even READ_ONLY variables
32// in the prototype chain.
33const NONE = 0;
34const READ_ONLY = 1;
35
36// Use DeclareGlobal...
37%AddNamedProperty(this.__proto__, "a", 1234, NONE);
38assertEquals(1234, a);
39eval("var a = 5678;");
40assertEquals(5678, a);
41
42%AddNamedProperty(this.__proto__, "b", 1234, NONE);
43assertEquals(1234, b);
44eval("const b = 5678;");
45assertEquals(5678, b);
46
47%AddNamedProperty(this.__proto__, "c", 1234, READ_ONLY);
48assertEquals(1234, c);
49eval("var c = 5678;");
50assertEquals(5678, c);
51
52%AddNamedProperty(this.__proto__, "d", 1234, READ_ONLY);
53assertEquals(1234, d);
54eval("const d = 5678;");
55assertEquals(5678, d);
56
57// Use DeclareContextSlot...
58%AddNamedProperty(this.__proto__, "x", 1234, NONE);
59assertEquals(1234, x);
60eval("with({}) { var x = 5678; }");
61assertEquals(5678, x);
62
63%AddNamedProperty(this.__proto__, "y", 1234, NONE);
64assertEquals(1234, y);
65eval("with({}) { const y = 5678; }");
66assertEquals(5678, y);
67
68%AddNamedProperty(this.__proto__, "z", 1234, READ_ONLY);
69assertEquals(1234, z);
70eval("with({}) { var z = 5678; }");
71assertEquals(5678, z);
72
73%AddNamedProperty(this.__proto__, "w", 1234, READ_ONLY);
74assertEquals(1234, w);
75eval("with({}) { const w = 5678; }");
76assertEquals(5678, w);
77