Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 | assertEquals(void 0, eval()); |
| 29 | assertEquals(4, eval(4)); |
| 30 | |
| 31 | function f() { return 'The f function'; }; |
| 32 | assertTrue(f === eval(f)); |
| 33 | |
| 34 | function g(x, y) { return 4; }; |
| 35 | |
| 36 | count = 0; |
| 37 | assertEquals(4, eval('2 + 2', count++)); |
| 38 | assertEquals(1, count); |
| 39 | |
| 40 | try { |
| 41 | eval('hest 7 &*^*&^'); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 42 | assertUnreachable('Did not throw on syntax error.'); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 43 | } catch (e) { |
| 44 | assertEquals('SyntaxError', e.name); |
| 45 | } |
| 46 | |
| 47 | |
| 48 | // eval has special evaluation order for consistency with other browsers. |
| 49 | global_eval = eval; |
| 50 | assertEquals(void 0, eval(eval("var eval = function f(x) { return 'hest';}"))) |
| 51 | eval = global_eval; |
| 52 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 53 | // Test eval with different number of parameters. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 54 | global_eval = eval; |
| 55 | eval = function(x, y) { return x + y; }; |
| 56 | assertEquals(4, eval(2, 2)); |
| 57 | eval = global_eval; |
| 58 | |
| 59 | // Test that un-aliased eval reads from local context. |
| 60 | foo = 0; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 61 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 62 | (function() { |
| 63 | var foo = 2; |
| 64 | return eval('foo'); |
| 65 | })(); |
| 66 | assertEquals(2, result); |
| 67 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 68 | // Test that un-aliased eval writes to local context. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 69 | foo = 0; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 70 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 71 | (function() { |
| 72 | var foo = 1; |
| 73 | eval('foo = 2'); |
| 74 | return foo; |
| 75 | })(); |
| 76 | assertEquals(2, result); |
| 77 | assertEquals(0, foo); |
| 78 | |
| 79 | // Test that un-aliased eval has right receiver. |
| 80 | function MyObject() { this.self = eval('this'); } |
| 81 | var o = new MyObject(); |
| 82 | assertTrue(o === o.self); |
| 83 | |
| 84 | // Test that aliased eval reads from global context. |
| 85 | var e = eval; |
| 86 | foo = 0; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 87 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 88 | (function() { |
| 89 | var foo = 2; |
| 90 | return e('foo'); |
| 91 | })(); |
| 92 | assertEquals(0, result); |
| 93 | |
| 94 | // Test that aliased eval writes to global context. |
| 95 | var e = eval; |
| 96 | foo = 0; |
| 97 | (function() { e('var foo = 2;'); })(); |
| 98 | assertEquals(2, foo); |
| 99 | |
| 100 | // Test that aliased eval has right receiver. |
| 101 | function MyOtherObject() { this.self = e('this'); } |
| 102 | var o = new MyOtherObject(); |
| 103 | assertTrue(this === o.self); |
| 104 | |
| 105 | // Try to cheat the 'aliased eval' detection. |
| 106 | var x = this; |
| 107 | foo = 0; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 108 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 109 | (function() { |
| 110 | var foo = 2; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 111 | // Should be non-direct call. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 112 | return x.eval('foo'); |
| 113 | })(); |
| 114 | assertEquals(0, result); |
| 115 | |
| 116 | foo = 0; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 117 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 118 | (function() { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 119 | var foo = 2; |
| 120 | // Should be non-direct call. |
| 121 | return (1,eval)('foo'); |
| 122 | })(); |
| 123 | assertEquals(0, result); |
| 124 | |
| 125 | foo = 0; |
| 126 | result = |
| 127 | (function() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 128 | var eval = function(x) { return x; }; |
| 129 | var foo = eval(2); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 130 | // Should be non-direct call. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 131 | return e('foo'); |
| 132 | })(); |
| 133 | assertEquals(0, result); |
| 134 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 135 | foo = 0; |
| 136 | result = |
| 137 | (function() { |
| 138 | var foo = 2; |
| 139 | // Should be direct call. |
| 140 | with ({ eval : e }) { |
| 141 | return eval('foo'); |
| 142 | } |
| 143 | })(); |
| 144 | assertEquals(2, result); |
| 145 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 146 | result = |
| 147 | (function() { |
| 148 | var eval = function(x) { return 2 * x; }; |
| 149 | return (function() { return eval(2); })(); |
| 150 | })(); |
| 151 | assertEquals(4, result); |
| 152 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 153 | result = |
| 154 | (function() { |
| 155 | eval("var eval = function(s) { return this; }"); |
| 156 | return eval("42"); // Should return the global object |
| 157 | })(); |
| 158 | assertEquals(this, result); |
| 159 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 160 | (function() { |
| 161 | var obj = { f: function(eval) { return eval("this"); } }; |
| 162 | result = obj.f(eval); |
| 163 | assertEquals(obj, result); |
| 164 | })(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 165 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 166 | (function() { |
| 167 | var obj = { f: function(eval) { arguments; return eval("this"); } }; |
| 168 | result = obj.f(eval); |
| 169 | assertEquals(obj, result); |
| 170 | })(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 171 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 172 | eval = function(x) { return 2 * x; }; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 173 | result = |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 174 | (function() { |
| 175 | return (function() { return eval(2); })(); |
| 176 | })(); |
| 177 | assertEquals(4, result); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 178 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 179 | |
| 180 | |
| 181 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 182 | // Regression test: calling a function named eval found in a context that is |
| 183 | // not the global context should get the global object as receiver. |
| 184 | result = |
| 185 | (function () { |
| 186 | var eval = function (x) { return this; }; |
| 187 | with ({}) { return eval('ignore'); } |
| 188 | })(); |
| 189 | assertEquals(this, result); |