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| 1 // Copyright 2009 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 // Tests global loads from eval. |
| 29 |
| 30 var x = 27; |
| 31 |
| 32 function test() { |
| 33 function g() { |
| 34 assertEquals(27, eval('x')); |
| 35 function h() { |
| 36 // Shadow with local variable. |
| 37 var x = 22; |
| 38 assertEquals(22, eval('x')); |
| 39 function i(x) { |
| 40 // Shadow with parameter. |
| 41 assertEquals(44, eval('x')); |
| 42 function j() { |
| 43 assertEquals(x, eval('x')); |
| 44 // Shadow with function name. |
| 45 function x() { |
| 46 assertEquals(x, eval('x')); |
| 47 } |
| 48 x(); |
| 49 } |
| 50 j(); |
| 51 } |
| 52 i(44); |
| 53 } |
| 54 h(); |
| 55 } |
| 56 g(); |
| 57 } |
| 58 |
| 59 test(); |
| 60 |
| 61 // Test loading of globals from deeply nested eval. This code is a |
| 62 // bit complicated, but the complication is needed to check that the |
| 63 // code that loads the global variable accounts for the fact that the |
| 64 // global variable becomes shadowed by an eval-introduced variable. |
| 65 var result = 0; |
| 66 function testDeep(source, load, test) { |
| 67 eval(source); |
| 68 function f() { |
| 69 var y = 23; |
| 70 function g() { |
| 71 var z = 25; |
| 72 function h() { |
| 73 eval(load); |
| 74 eval(test); |
| 75 } |
| 76 h(); |
| 77 } |
| 78 g(); |
| 79 } |
| 80 f(); |
| 81 } |
| 82 testDeep('1', 'result = x', 'assertEquals(27, result)'); |
| 83 // Because of the eval-cache, the 'result = x' code gets reused. This |
| 84 // time in a context where the 'x' variable has been shadowed. |
| 85 testDeep('var x = 1', 'result = x', 'assertEquals(1, result)'); |
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