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@mozilla.org, pschwartau@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//------------------------------------------------------------------------------------------------- 37var bug = 68498; 38var summary = 'Testing self.eval(str) inside a function'; 39var statprefix = '; currently at expect['; 40var statsuffix = '] within test -'; 41var sToEval=''; 42var actual=[ ]; 43var expect=[ ]; 44 45 46// Capture a reference to the global object - 47var self = this; 48 49// You shouldn't see this global variable's value in any printout - 50var x = 'outer'; 51 52// This function is the heart of the test - 53function f(o,s,x) {with(o) eval(s); return z;}; 54 55// Run-time statements to pass to the eval inside f 56sToEval += 'actual[0] = typeof g;' 57sToEval += 'function g(){actual[1]=(typeof w == "undefined" || w); return x};' 58sToEval += 'actual[2] = w;' 59sToEval += 'actual[3] = typeof g;' 60sToEval += 'var z=g();' 61 62// Set the actual-results array. The next line will set actual[0] - actual[4] in one shot 63actual[4] = f({w:44}, sToEval, 'inner'); 64actual[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*/ 80expect[0] = 'function'; 81expect[1] = 44; 82expect[2] = 44; 83expect[3] = 'function'; 84expect[4] = 'inner'; 85expect[5] = false; 86 87 88 89//------------------------------------------------------------------------------------------------ 90test(); 91//------------------------------------------------------------------------------------------------- 92 93 94function 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 109function getStatus(i) 110{ 111 return (summary + statprefix + i + statsuffix); 112} 113