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@day.com, pschwartau@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//----------------------------------------------------------------------------- 46var UBound = 0; 47var bug = 181834; 48var summary = 'Testing scope'; 49var status = ''; 50var statusitems = []; 51var actual = ''; 52var actualvalues = []; 53var expect= ''; 54var 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 */ 68function 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 */ 88setDynamicScope(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 */ 94var s = outer.toString(); 95eval(s); 96 97status = inSection(1); 98actual = outer(-5); 99expect = 1; 100addThis(); 101 102status = inSection(2); 103actual = outer(0); 104expect = 1; 105addThis(); 106 107status = inSection(3); 108actual = outer(5); 109expect = 6; 110addThis(); 111 112 113/* 114 * Sanity check: do same steps with the dynamic flag off 115 */ 116setDynamicScope(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 */ 122eval(s); 123 124status = inSection(4); 125actual = outer(-5); 126expect = 1; 127addThis(); 128 129status = inSection(5); 130actual = outer(0); 131expect = 1; 132addThis(); 133 134status = inSection(6); 135actual = outer(5); 136expect = 6; 137addThis(); 138 139 140 141//----------------------------------------------------------------------------- 142test(); 143//----------------------------------------------------------------------------- 144 145 146 147function 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 157function addThis() 158{ 159 statusitems[UBound] = status; 160 actualvalues[UBound] = actual; 161 expectedvalues[UBound] = expect; 162 UBound++; 163} 164 165 166function 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