1 /* 2 * The contents of this file are subject to the Netscape Public 3 * License Version 1.1 (the "License"); you may not use this file 4 * except in compliance with the License. You may obtain a copy of 5 * the License at http://www.mozilla.org/NPL/ 6 * 7 * Software distributed under the License is distributed on an "AS 8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 9 * implied. See the License for the specific language governing 10 * rights and limitations under the License. 11 * 12 * The Original Code is mozilla.org code. 13 * 14 * The Initial Developer of the Original Code is Netscape 15 * Communications Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): brendan (at) mozilla.org, pschwartau (at) netscape.com 20 * Date: 15 Feb 2001 21 * 22 * SUMMARY: self.eval(str) inside a function 23 * NOTE: 'self' is just a variable used to capture the global JS object. 24 * 25 * See http://bugzilla.mozilla.org/show_bug.cgi?id=68498 26 * See http://bugzilla.mozilla.org/showattachment.cgi?attach_id=25251 27 * See http://bugzilla.mozilla.org/show_bug.cgi?id=69441 (!!!) 28 * 29 * Brendan: 30 * 31 * "ECMA-262 Edition 3, 10.1.3 requires a FunctionDeclaration parsed as part 32 * of a Program by eval to create a property of eval's caller's variable object. 33 * This test evals in the body of a with statement, whose scope chain *is* 34 * relevant to the effect of parsing the FunctionDeclaration." 35 */ 36 //------------------------------------------------------------------------------------------------- 37 var bug = 68498; 38 var summary = 'Testing self.eval(str) inside a function'; 39 var statprefix = '; currently at expect['; 40 var statsuffix = '] within test -'; 41 var sToEval=''; 42 var actual=[ ]; 43 var expect=[ ]; 44 45 46 // Capture a reference to the global object - 47 var self = this; 48 49 // You shouldn't see this global variable's value in any printout - 50 var x = 'outer'; 51 52 // This function is the heart of the test - 53 function f(o,s,x) {with(o) eval(s); return z;}; 54 55 // Run-time statements to pass to the eval inside f 56 sToEval += 'actual[0] = typeof g;' 57 sToEval += 'function g(){actual[1]=(typeof w == "undefined" || w); return x};' 58 sToEval += 'actual[2] = w;' 59 sToEval += 'actual[3] = typeof g;' 60 sToEval += 'var z=g();' 61 62 // Set the actual-results array. The next line will set actual[0] - actual[4] in one shot 63 actual[4] = f({w:44}, sToEval, 'inner'); 64 actual[5] = 'z' in self && z; 65 66 67 /* Set the expected-results array. 68 * 69 * Sample issue: why do we set expect[4] = 'inner'? Look at actual[4]... 70 * 1. The return value of f equals z, which is not defined at compile-time 71 * 2. At run-time (via with(o) eval(s) inside f), z is defined as the return value of g 72 * 3. At run-time (via with(o) eval(s) inside f), g is defined to return x 73 * 4. In the scope of with(o), x is undefined 74 * 5. Farther up the scope chain, x can be located as an argument of f 75 * 6. The value of this argument at run-time is 'inner' 76 * 7. Even farther up the scope chain, the name x can be found as a global variable 77 * 8. The value of this global variable is 'outer', but we should NOT have gone 78 * this far up the scope chain to find x...therefore we expect 'inner' 79 */ 80 expect[0] = 'function'; 81 expect[1] = 44; 82 expect[2] = 44; 83 expect[3] = 'function'; 84 expect[4] = 'inner'; 85 expect[5] = false; 86 87 88 89 //------------------------------------------------------------------------------------------------ 90 test(); 91 //------------------------------------------------------------------------------------------------- 92 93 94 function test() 95 { 96 enterFunc ('test'); 97 printBugNumber (bug); 98 printStatus (summary); 99 100 for (var i in expect) 101 { 102 reportCompare(expect[i], actual[i], getStatus(i)); 103 } 104 105 exitFunc ('test'); 106 } 107 108 109 function getStatus(i) 110 { 111 return (summary + statprefix + i + statsuffix); 112 } 113