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comparison: js/src/tests/js1_5/Scope/regress-181834.js
js/src/tests/js1_5/Scope/regress-181834.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 /* | |
| 7 * | |
| 8 * Date: 25 November 2002 | |
| 9 * SUMMARY: Testing scope | |
| 10 * See http://bugzilla.mozilla.org/show_bug.cgi?id=181834 | |
| 11 * | |
| 12 * This bug only bit in Rhino interpreted mode, when the | |
| 13 * 'compile functions with dynamic scope' feature was set. | |
| 14 * | |
| 15 */ | |
| 16 //----------------------------------------------------------------------------- | |
| 17 var UBound = 0; | |
| 18 var BUGNUMBER = 181834; | |
| 19 var summary = 'Testing scope'; | |
| 20 var status = ''; | |
| 21 var statusitems = []; | |
| 22 var actual = ''; | |
| 23 var actualvalues = []; | |
| 24 var expect= ''; | |
| 25 var expectedvalues = []; | |
| 26 | |
| 27 | |
| 28 /* | |
| 29 * If N<=0, |outer_d| just gets incremented once, | |
| 30 * so the return value should be 1 in this case. | |
| 31 * | |
| 32 * If N>0, we end up calling inner() N+1 times: | |
| 33 * inner(N), inner(N-1), ... , inner(0). | |
| 34 * | |
| 35 * Each call to inner() increments |outer_d| by 1. | |
| 36 * The last call, inner(0), returns the final value | |
| 37 * of |outer_d|, which should be N+1. | |
| 38 */ | |
| 39 function outer(N) | |
| 40 { | |
| 41 var outer_d = 0; | |
| 42 return inner(N); | |
| 43 | |
| 44 function inner(level) | |
| 45 { | |
| 46 outer_d++; | |
| 47 | |
| 48 if (level > 0) | |
| 49 return inner(level - 1); | |
| 50 else | |
| 51 return outer_d; | |
| 52 } | |
| 53 } | |
| 54 | |
| 55 | |
| 56 /* | |
| 57 * This only has meaning in Rhino - | |
| 58 */ | |
| 59 setDynamicScope(true); | |
| 60 | |
| 61 /* | |
| 62 * Recompile the function |outer| via eval() in order to | |
| 63 * feel the effect of the dynamic scope mode we have set. | |
| 64 */ | |
| 65 var s = outer.toString(); | |
| 66 eval(s); | |
| 67 | |
| 68 status = inSection(1); | |
| 69 actual = outer(-5); | |
| 70 expect = 1; | |
| 71 addThis(); | |
| 72 | |
| 73 status = inSection(2); | |
| 74 actual = outer(0); | |
| 75 expect = 1; | |
| 76 addThis(); | |
| 77 | |
| 78 status = inSection(3); | |
| 79 actual = outer(5); | |
| 80 expect = 6; | |
| 81 addThis(); | |
| 82 | |
| 83 | |
| 84 /* | |
| 85 * Sanity check: do same steps with the dynamic flag off | |
| 86 */ | |
| 87 setDynamicScope(false); | |
| 88 | |
| 89 /* | |
| 90 * Recompile the function |outer| via eval() in order to | |
| 91 * feel the effect of the dynamic scope mode we have set. | |
| 92 */ | |
| 93 eval(s); | |
| 94 | |
| 95 status = inSection(4); | |
| 96 actual = outer(-5); | |
| 97 expect = 1; | |
| 98 addThis(); | |
| 99 | |
| 100 status = inSection(5); | |
| 101 actual = outer(0); | |
| 102 expect = 1; | |
| 103 addThis(); | |
| 104 | |
| 105 status = inSection(6); | |
| 106 actual = outer(5); | |
| 107 expect = 6; | |
| 108 addThis(); | |
| 109 | |
| 110 | |
| 111 | |
| 112 //----------------------------------------------------------------------------- | |
| 113 test(); | |
| 114 //----------------------------------------------------------------------------- | |
| 115 | |
| 116 | |
| 117 | |
| 118 function setDynamicScope(flag) | |
| 119 { | |
| 120 if (this.Packages) | |
| 121 { | |
| 122 var cx = this.Packages.org.mozilla.javascript.Context.getCurrentContext(); | |
| 123 cx.setCompileFunctionsWithDynamicScope(flag); | |
| 124 } | |
| 125 } | |
| 126 | |
| 127 | |
| 128 function addThis() | |
| 129 { | |
| 130 statusitems[UBound] = status; | |
| 131 actualvalues[UBound] = actual; | |
| 132 expectedvalues[UBound] = expect; | |
| 133 UBound++; | |
| 134 } | |
| 135 | |
| 136 | |
| 137 function test() | |
| 138 { | |
| 139 enterFunc('test'); | |
| 140 printBugNumber(BUGNUMBER); | |
| 141 printStatus(summary); | |
| 142 | |
| 143 for (var i=0; i<UBound; i++) | |
| 144 { | |
| 145 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); | |
| 146 } | |
| 147 | |
| 148 exitFunc ('test'); | |
| 149 } |
