1// Copyright 2011 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
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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,
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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: --harmony-scoping
29
30// Test that we throw early syntax errors in harmony mode
31// when using an immutable binding in an assigment or with
32// prefix/postfix decrement/increment operators.
33
34"use strict";
35
36// Function local const.
37function constDecl0(use) {
38  return "(function() { const constvar = 1; " + use + "; });";
39}
40
41
42function constDecl1(use) {
43  return "(function() { " + use + "; const constvar = 1; });";
44}
45
46
47// Function local const, assign from eval.
48function constDecl2(use) {
49  use = "eval('(function() { " + use + " })')";
50  return "(function() { const constvar = 1; " + use + "; })();";
51}
52
53
54function constDecl3(use) {
55  use = "eval('(function() { " + use + " })')";
56  return "(function() { " + use + "; const constvar = 1; })();";
57}
58
59
60// Block local const.
61function constDecl4(use) {
62  return "(function() { { const constvar = 1; " + use + "; } });";
63}
64
65
66function constDecl5(use) {
67  return "(function() { { " + use + "; const constvar = 1; } });";
68}
69
70
71// Block local const, assign from eval.
72function constDecl6(use) {
73  use = "eval('(function() {" + use + "})')";
74  return "(function() { { const constvar = 1; " + use + "; } })();";
75}
76
77
78function constDecl7(use) {
79  use = "eval('(function() {" + use + "})')";
80  return "(function() { { " + use + "; const constvar = 1; } })();";
81}
82
83
84// Function expression name.
85function constDecl8(use) {
86  return "(function constvar() { " + use + "; });";
87}
88
89
90// Function expression name, assign from eval.
91function constDecl9(use) {
92  use = "eval('(function(){" + use + "})')";
93  return "(function constvar() { " + use + "; })();";
94}
95
96let decls = [ constDecl0,
97              constDecl1,
98              constDecl2,
99              constDecl3,
100              constDecl4,
101              constDecl5,
102              constDecl6,
103              constDecl7,
104              constDecl8,
105              constDecl9
106              ];
107let uses = [ 'constvar = 1;',
108             'constvar += 1;',
109             '++constvar;',
110             'constvar++;'
111             ];
112
113function Test(d,u) {
114  'use strict';
115  try {
116    print(d(u));
117    eval(d(u));
118  } catch (e) {
119    assertInstanceof(e, SyntaxError);
120    assertTrue(e.toString().indexOf("Assignment to constant variable") >= 0);
121    return;
122  }
123  assertUnreachable();
124}
125
126for (var d = 0; d < decls.length; ++d) {
127  for (var u = 0; u < uses.length; ++u) {
128    Test(decls[d], uses[u]);
129  }
130}
131