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227 lines
6.4 KiB
JavaScript
227 lines
6.4 KiB
JavaScript
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is JavaScript Engine testing utilities.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corp.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* rogerl@netscape.com, pschwartau@netscape.com
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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*
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* Date: 15 July 2002
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* SUMMARY: Testing functions with double-byte names
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* See http://bugzilla.mozilla.org/show_bug.cgi?id=58274
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*
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* Here is a sample of the problem:
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*
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* js> function f\u02B1 () {}
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*
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* js> f\u02B1.toSource();
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* function f<>() {}
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*
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* js> f\u02B1.toSource().toSource();
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* (new String("function f\xB1() {}"))
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*
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*
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* See how the high-byte information (the 02) has been lost?
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* The same thing was happening with the toString() method:
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*
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* js> f\u02B1.toString();
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*
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* function f<>() {
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* }
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*
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* js> f\u02B1.toString().toSource();
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* (new String("\nfunction f\xB1() {\n}\n"))
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*
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*/
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//-----------------------------------------------------------------------------
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var gTestfile = 'regress-58274.js';
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var UBound = 0;
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var BUGNUMBER = 58274;
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var summary = 'Testing functions with double-byte names';
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var ERR = 'UNEXPECTED ERROR! \n';
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var ERR_MALFORMED_NAME = ERR + 'Could not find function name in: \n\n';
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var status = '';
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var statusitems = [];
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var actual = '';
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var actualvalues = [];
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var expect= '';
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var expectedvalues = [];
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var sEval;
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var sName;
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sEval = "function f\u02B2() {return 42;}";
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eval(sEval);
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sName = getFunctionName(f\u02B2);
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// Test function call -
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status = inSection(1);
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actual = f\u02B2();
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expect = 42;
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addThis();
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// Test both characters of function name -
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status = inSection(2);
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actual = sName[0];
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expect = sEval[9];
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addThis();
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status = inSection(3);
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actual = sName[1];
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expect = sEval[10];
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addThis();
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sEval = "function f\u02B2\u0AAA () {return 84;}";
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eval(sEval);
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sName = getFunctionName(f\u02B2\u0AAA);
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// Test function call -
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status = inSection(4);
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actual = f\u02B2\u0AAA();
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expect = 84;
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addThis();
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// Test all three characters of function name -
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status = inSection(5);
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actual = sName[0];
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expect = sEval[9];
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addThis();
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status = inSection(6);
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actual = sName[1];
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expect = sEval[10];
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addThis();
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status = inSection(7);
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actual = sName[2];
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expect = sEval[11];
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addThis();
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//-----------------------------------------------------------------------------
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test();
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//-----------------------------------------------------------------------------
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/*
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* Goal: test that f.toString() contains the proper function name.
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*
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* Note, however, f.toString() is implementation-independent. For example,
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* it may begin with '\nfunction' instead of 'function'. Therefore we use
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* a regexp to make sure we extract the name properly.
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*
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* Here we assume that f has been defined by means of a function statement,
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* and not a function expression (where it wouldn't have to have a name).
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*
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* Rhino uses a Unicode representation for f.toString(); whereas
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* SpiderMonkey uses an ASCII representation, putting escape sequences
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* for non-ASCII characters. For example, if a function is called f\u02B1,
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* then in Rhino the toString() method will present a 2-character Unicode
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* string for its name, whereas SpiderMonkey will present a 7-character
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* ASCII string for its name: the string literal 'f\u02B1'.
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*
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* So we force the lexer to condense the string before using it.
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* This will give uniform results in Rhino and SpiderMonkey.
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*/
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function getFunctionName(f)
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{
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var s = condenseStr(f.toString());
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var re = /\s*function\s+(\S+)\s*\(/;
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var arr = s.match(re);
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if (!(arr && arr[1]))
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return ERR_MALFORMED_NAME + s;
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return arr[1];
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}
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/*
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* This function is the opposite of functions like escape(), which take
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* Unicode characters and return escape sequences for them. Here, we force
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* the lexer to turn escape sequences back into single characters.
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*
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* Note we can't simply do |eval(str)|, since in practice |str| will be an
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* identifier somewhere in the program (e.g. a function name); thus |eval(str)|
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* would return the object that the identifier represents: not what we want.
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*
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* So we surround |str| lexicographically with quotes to force the lexer to
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* evaluate it as a string. Have to strip out any linefeeds first, however -
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*/
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function condenseStr(str)
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{
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/*
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* You won't be able to do the next step if |str| has
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* any carriage returns or linefeeds in it. For example:
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*
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* js> eval("'" + '\nHello' + "'");
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* 1: SyntaxError: unterminated string literal:
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* 1: '
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* 1: ^
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*
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* So replace them with the empty string -
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*/
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str = str.replace(/[\r\n]/g, '')
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return eval("'" + str + "'");
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}
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function addThis()
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{
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statusitems[UBound] = status;
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actualvalues[UBound] = actual;
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expectedvalues[UBound] = expect;
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UBound++;
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}
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function test()
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{
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enterFunc('test');
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printBugNumber(BUGNUMBER);
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printStatus(summary);
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for (var i=0; i<UBound; i++)
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{
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reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
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}
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exitFunc ('test');
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}
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