| /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| /* |
| * |
| * Date: 15 July 2002 |
| * SUMMARY: Testing functions with double-byte names |
| * See http://bugzilla.mozilla.org/show_bug.cgi?id=58274 |
| * |
| * Here is a sample of the problem: |
| * |
| * js> function f\u02B1 () {} |
| * |
| * js> f\u02B1.toSource(); |
| * function f¦() {} |
| * |
| * js> f\u02B1.toSource().toSource(); |
| * (new String("function f\xB1() {}")) |
| * |
| * |
| * See how the high-byte information (the 02) has been lost? |
| * The same thing was happening with the toString() method: |
| * |
| * js> f\u02B1.toString(); |
| * |
| * function f¦() { |
| * } |
| * |
| * js> f\u02B1.toString().toSource(); |
| * (new String("\nfunction f\xB1() {\n}\n")) |
| * |
| */ |
| //----------------------------------------------------------------------------- |
| var UBound = 0; |
| var BUGNUMBER = 58274; |
| var summary = 'Testing functions with double-byte names'; |
| var ERR = 'UNEXPECTED ERROR! \n'; |
| var ERR_MALFORMED_NAME = ERR + 'Could not find function name in: \n\n'; |
| var status = ''; |
| var statusitems = []; |
| var actual = ''; |
| var actualvalues = []; |
| var expect= ''; |
| var expectedvalues = []; |
| var sEval; |
| var sName; |
| |
| |
| sEval = "function f\u02B2() {return 42;}"; |
| eval(sEval); |
| sName = getFunctionName(f\u02B2); |
| |
| // Test function call - |
| status = inSection(1); |
| actual = f\u02B2(); |
| expect = 42; |
| addThis(); |
| |
| // Test both characters of function name - |
| status = inSection(2); |
| actual = sName[0]; |
| expect = sEval[9]; |
| addThis(); |
| |
| status = inSection(3); |
| actual = sName[1]; |
| expect = sEval[10]; |
| addThis(); |
| |
| |
| |
| sEval = "function f\u02B2\u0AAA () {return 84;}"; |
| eval(sEval); |
| sName = getFunctionName(f\u02B2\u0AAA); |
| |
| // Test function call - |
| status = inSection(4); |
| actual = f\u02B2\u0AAA(); |
| expect = 84; |
| addThis(); |
| |
| // Test all three characters of function name - |
| status = inSection(5); |
| actual = sName[0]; |
| expect = sEval[9]; |
| addThis(); |
| |
| status = inSection(6); |
| actual = sName[1]; |
| expect = sEval[10]; |
| addThis(); |
| |
| status = inSection(7); |
| actual = sName[2]; |
| expect = sEval[11]; |
| addThis(); |
| |
| |
| |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| |
| |
| /* |
| * Goal: test that f.toString() contains the proper function name. |
| * |
| * Note, however, f.toString() is implementation-independent. For example, |
| * it may begin with '\nfunction' instead of 'function'. Therefore we use |
| * a regexp to make sure we extract the name properly. |
| * |
| * Here we assume that f has been defined by means of a function statement, |
| * and not a function expression (where it wouldn't have to have a name). |
| * |
| * Rhino uses a Unicode representation for f.toString(); whereas |
| * SpiderMonkey uses an ASCII representation, putting escape sequences |
| * for non-ASCII characters. For example, if a function is called f\u02B1, |
| * then in Rhino the toString() method will present a 2-character Unicode |
| * string for its name, whereas SpiderMonkey will present a 7-character |
| * ASCII string for its name: the string literal 'f\u02B1'. |
| * |
| * So we force the lexer to condense the string before using it. |
| * This will give uniform results in Rhino and SpiderMonkey. |
| */ |
| function getFunctionName(f) |
| { |
| var s = condenseStr(f.toString()); |
| var re = /\s*function\s+(\S+)\s*\(/; |
| var arr = s.match(re); |
| |
| if (!(arr && arr[1])) |
| return ERR_MALFORMED_NAME + s; |
| return arr[1]; |
| } |
| |
| |
| /* |
| * This function is the opposite of functions like escape(), which take |
| * Unicode characters and return escape sequences for them. Here, we force |
| * the lexer to turn escape sequences back into single characters. |
| * |
| * Note we can't simply do |eval(str)|, since in practice |str| will be an |
| * identifier somewhere in the program (e.g. a function name); thus |eval(str)| |
| * would return the object that the identifier represents: not what we want. |
| * |
| * So we surround |str| lexicographically with quotes to force the lexer to |
| * evaluate it as a string. Have to strip out any linefeeds first, however - |
| */ |
| function condenseStr(str) |
| { |
| /* |
| * You won't be able to do the next step if |str| has |
| * any carriage returns or linefeeds in it. For example: |
| * |
| * js> eval("'" + '\nHello' + "'"); |
| * 1: SyntaxError: unterminated string literal: |
| * 1: ' |
| * 1: ^ |
| * |
| * So replace them with the empty string - |
| */ |
| str = str.replace(/[\r\n]/g, '') |
| return eval("'" + str + "'"); |
| } |
| |
| |
| function addThis() |
| { |
| statusitems[UBound] = status; |
| actualvalues[UBound] = actual; |
| expectedvalues[UBound] = expect; |
| UBound++; |
| } |
| |
| |
| function test() |
| { |
| enterFunc('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus(summary); |
| |
| for (var i=0; i<UBound; i++) |
| { |
| reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); |
| } |
| |
| exitFunc ('test'); |
| } |