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): rogerl (at) netscape.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: 15 July 2002 38 * SUMMARY: Testing functions with double-byte names 39 * See http://bugzilla.mozilla.org/show_bug.cgi?id=58274 40 * 41 * Here is a sample of the problem: 42 * 43 * js> function f\u02B1 () {} 44 * 45 * js> f\u02B1.toSource(); 46 * function f() {} 47 * 48 * js> f\u02B1.toSource().toSource(); 49 * (new String("function f\xB1() {}")) 50 * 51 * 52 * See how the high-byte information (the 02) has been lost? 53 * The same thing was happening with the toString() method: 54 * 55 * js> f\u02B1.toString(); 56 * 57 * function f() { 58 * } 59 * 60 * js> f\u02B1.toString().toSource(); 61 * (new String("\nfunction f\xB1() {\n}\n")) 62 * 63 */ 64 //----------------------------------------------------------------------------- 65 var UBound = 0; 66 var bug = 58274; 67 var summary = 'Testing functions with double-byte names'; 68 var ERR = 'UNEXPECTED ERROR! \n'; 69 var ERR_MALFORMED_NAME = ERR + 'Could not find function name in: \n\n'; 70 var status = ''; 71 var statusitems = []; 72 var actual = ''; 73 var actualvalues = []; 74 var expect= ''; 75 var expectedvalues = []; 76 var sEval; 77 var sName; 78 79 80 sEval = "function f\u02B2() {return 42;}"; 81 eval(sEval); 82 sName = getFunctionName(f\u02B2); 83 84 // Test function call - 85 status = inSection(1); 86 actual = f\u02B2(); 87 expect = 42; 88 addThis(); 89 90 // Test both characters of function name - 91 status = inSection(2); 92 actual = sName[0]; 93 expect = sEval[9]; 94 addThis(); 95 96 status = inSection(3); 97 actual = sName[1]; 98 expect = sEval[10]; 99 addThis(); 100 101 102 103 sEval = "function f\u02B2\u0AAA () {return 84;}"; 104 eval(sEval); 105 sName = getFunctionName(f\u02B2\u0AAA); 106 107 // Test function call - 108 status = inSection(4); 109 actual = f\u02B2\u0AAA(); 110 expect = 84; 111 addThis(); 112 113 // Test all three characters of function name - 114 status = inSection(5); 115 actual = sName[0]; 116 expect = sEval[9]; 117 addThis(); 118 119 status = inSection(6); 120 actual = sName[1]; 121 expect = sEval[10]; 122 addThis(); 123 124 status = inSection(7); 125 actual = sName[2]; 126 expect = sEval[11]; 127 addThis(); 128 129 130 131 132 //----------------------------------------------------------------------------- 133 test(); 134 //----------------------------------------------------------------------------- 135 136 137 138 /* 139 * Goal: test that f.toString() contains the proper function name. 140 * 141 * Note, however, f.toString() is implementation-independent. For example, 142 * it may begin with '\nfunction' instead of 'function'. Therefore we use 143 * a regexp to make sure we extract the name properly. 144 * 145 * Here we assume that f has been defined by means of a function statement, 146 * and not a function expression (where it wouldn't have to have a name). 147 * 148 * Rhino uses a Unicode representation for f.toString(); whereas 149 * SpiderMonkey uses an ASCII representation, putting escape sequences 150 * for non-ASCII characters. For example, if a function is called f\u02B1, 151 * then in Rhino the toString() method will present a 2-character Unicode 152 * string for its name, whereas SpiderMonkey will present a 7-character 153 * ASCII string for its name: the string literal 'f\u02B1'. 154 * 155 * So we force the lexer to condense the string before using it. 156 * This will give uniform results in Rhino and SpiderMonkey. 157 */ 158 function getFunctionName(f) 159 { 160 var s = condenseStr(f.toString()); 161 var re = /\s*function\s+(\S+)\s*\(/; 162 var arr = s.match(re); 163 164 if (!(arr && arr[1])) 165 return ERR_MALFORMED_NAME + s; 166 return arr[1]; 167 } 168 169 170 /* 171 * This function is the opposite of functions like escape(), which take 172 * Unicode characters and return escape sequences for them. Here, we force 173 * the lexer to turn escape sequences back into single characters. 174 * 175 * Note we can't simply do |eval(str)|, since in practice |str| will be an 176 * identifier somewhere in the program (e.g. a function name); thus |eval(str)| 177 * would return the object that the identifier represents: not what we want. 178 * 179 * So we surround |str| lexicographically with quotes to force the lexer to 180 * evaluate it as a string. Have to strip out any linefeeds first, however - 181 */ 182 function condenseStr(str) 183 { 184 /* 185 * You won't be able to do the next step if |str| has 186 * any carriage returns or linefeeds in it. For example: 187 * 188 * js> eval("'" + '\nHello' + "'"); 189 * 1: SyntaxError: unterminated string literal: 190 * 1: ' 191 * 1: ^ 192 * 193 * So replace them with the empty string - 194 */ 195 str = str.replace(/[\r\n]/g, '') 196 return eval("'" + str + "'"); 197 } 198 199 200 function addThis() 201 { 202 statusitems[UBound] = status; 203 actualvalues[UBound] = actual; 204 expectedvalues[UBound] = expect; 205 UBound++; 206 } 207 208 209 function test() 210 { 211 enterFunc('test'); 212 printBugNumber(bug); 213 printStatus(summary); 214 215 for (var i=0; i<UBound; i++) 216 { 217 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); 218 } 219 220 exitFunc ('test'); 221 } 222
