1 /* ***** BEGIN LICENSE BLOCK ***** 2 * Version: NPL 1.1/GPL 2.0/LGPL 2.1 3 * 4 * The contents of this file are subject to the Netscape Public License 5 * Version 1.1 (the "License"); you may not use this file except in 6 * compliance with the License. You may obtain a copy of the License at 7 * http://www.mozilla.org/NPL/ 8 * 9 * Software distributed under the License is distributed on an "AS IS" basis, 10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 11 * for the specific language governing rights and limitations under the 12 * License. 13 * 14 * The Original Code is JavaScript Engine testing utilities. 15 * 16 * The Initial Developer of the Original Code is Netscape Communications Corp. 17 * Portions created by the Initial Developer are Copyright (C) 2002 18 * the Initial Developer. All Rights Reserved. 19 * 20 * Contributor(s): felix.meschberger (at) day.com, pschwartau (at) netscape.com 21 * 22 * Alternatively, the contents of this file may be used under the terms of 23 * either the GNU General Public License Version 2 or later (the "GPL"), or 24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 25 * in which case the provisions of the GPL or the LGPL are applicable instead 26 * of those above. If you wish to allow use of your version of this file only 27 * under the terms of either the GPL or the LGPL, and not to allow others to 28 * use your version of this file under the terms of the NPL, indicate your 29 * decision by deleting the provisions above and replace them with the notice 30 * and other provisions required by the GPL or the LGPL. If you do not delete 31 * the provisions above, a recipient may use your version of this file under 32 * the terms of any one of the NPL, the GPL or the LGPL. 33 * 34 * ***** END LICENSE BLOCK ***** 35 * 36 * 37 * Date: 25 November 2002 38 * SUMMARY: Testing scope 39 * See http://bugzilla.mozilla.org/show_bug.cgi?id=181834 40 * 41 * This bug only bit in Rhino interpreted mode, when the 42 * 'compile functions with dynamic scope' feature was set. 43 * 44 */ 45 //----------------------------------------------------------------------------- 46 var UBound = 0; 47 var bug = 181834; 48 var summary = 'Testing scope'; 49 var status = ''; 50 var statusitems = []; 51 var actual = ''; 52 var actualvalues = []; 53 var expect= ''; 54 var expectedvalues = []; 55 56 57 /* 58 * If N<=0, |outer_d| just gets incremented once, 59 * so the return value should be 1 in this case. 60 * 61 * If N>0, we end up calling inner() N+1 times: 62 * inner(N), inner(N-1), ... , inner(0). 63 * 64 * Each call to inner() increments |outer_d| by 1. 65 * The last call, inner(0), returns the final value 66 * of |outer_d|, which should be N+1. 67 */ 68 function outer(N) 69 { 70 var outer_d = 0; 71 return inner(N); 72 73 function inner(level) 74 { 75 outer_d++; 76 77 if (level > 0) 78 return inner(level - 1); 79 else 80 return outer_d; 81 } 82 } 83 84 85 /* 86 * This only has meaning in Rhino - 87 */ 88 setDynamicScope(true); 89 90 /* 91 * Recompile the function |outer| via eval() in order to 92 * feel the effect of the dynamic scope mode we have set. 93 */ 94 var s = outer.toString(); 95 eval(s); 96 97 status = inSection(1); 98 actual = outer(-5); 99 expect = 1; 100 addThis(); 101 102 status = inSection(2); 103 actual = outer(0); 104 expect = 1; 105 addThis(); 106 107 status = inSection(3); 108 actual = outer(5); 109 expect = 6; 110 addThis(); 111 112 113 /* 114 * Sanity check: do same steps with the dynamic flag off 115 */ 116 setDynamicScope(false); 117 118 /* 119 * Recompile the function |outer| via eval() in order to 120 * feel the effect of the dynamic scope mode we have set. 121 */ 122 eval(s); 123 124 status = inSection(4); 125 actual = outer(-5); 126 expect = 1; 127 addThis(); 128 129 status = inSection(5); 130 actual = outer(0); 131 expect = 1; 132 addThis(); 133 134 status = inSection(6); 135 actual = outer(5); 136 expect = 6; 137 addThis(); 138 139 140 141 //----------------------------------------------------------------------------- 142 test(); 143 //----------------------------------------------------------------------------- 144 145 146 147 function setDynamicScope(flag) 148 { 149 if (this.Packages) 150 { 151 var cx = this.Packages.org.mozilla.javascript.Context.getCurrentContext(); 152 cx.setCompileFunctionsWithDynamicScope(flag); 153 } 154 } 155 156 157 function addThis() 158 { 159 statusitems[UBound] = status; 160 actualvalues[UBound] = actual; 161 expectedvalues[UBound] = expect; 162 UBound++; 163 } 164 165 166 function test() 167 { 168 enterFunc('test'); 169 printBugNumber(bug); 170 printStatus(summary); 171 172 for (var i=0; i<UBound; i++) 173 { 174 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); 175 } 176 177 exitFunc ('test'); 178 } 179