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/* -*- 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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* 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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* 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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* The Original Code is Mozilla Communicator client code, released
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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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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* ***** END LICENSE BLOCK ***** */
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File Name: 15.5.4.11-2.js
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ECMA Section: 15.5.4.11 String.prototype.toLowerCase()
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Returns a string equal in length to the length of the result of converting
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this object to a string. The result is a string value, not a String object.
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Every character of the result is equal to the corresponding character of the
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string, unless that character has a Unicode 2.0 uppercase equivalent, in which
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case the uppercase equivalent is used instead. (The canonical Unicode 2.0 case
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mapping shall be used, which does not depend on implementation or locale.)
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Note that the toLowerCase function is intentionally generic; it does not require
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that its this value be a String object. Therefore it can be transferred to other
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kinds of objects for use as a method.
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Author: christine@netscape.com
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Date: 12 november 1997
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var SECTION = "15.5.4.11-2";
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var VERSION = "ECMA_1";
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var TITLE = "String.prototype.toLowerCase()";
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writeHeaderToLog( SECTION + " "+ TITLE);
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// Range: U+10A0 to U+10FF
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for ( var i = 0x10A0; i <= 0x10FF; i++ ) {
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var U = new Unicode( i );
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new TestCase( SECTION,
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"var s = new String( String.fromCharCode("+i+") ); s.toLowerCase()",
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String.fromCharCode(U.lower),
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eval("var s = new String( String.fromCharCode("+i+") ); s.toLowerCase()") );
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new TestCase( SECTION,
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"var s = new String( String.fromCharCode("+i+") ); s.toLowerCase().charCodeAt(0)",
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eval("var s = new String( String.fromCharCode(i) ); s.toLowerCase().charCodeAt(0)") );
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function MyObject( value ) {
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this.substring = String.prototype.substring;
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this.toString = new Function ( "return this.value+''" );
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function Unicode( c ) {
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u = GetUnicodeValues( c );
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function GetUnicodeValues( c ) {
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// upper case Basic Latin
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if ( c >= 0x0041 && c <= 0x005A) {
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// lower case Basic Latin
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if ( c >= 0x0061 && c <= 0x007a ) {
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// upper case Latin-1 Supplement
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if ( (c >= 0x00C0 && c <= 0x00D6) || (c >= 0x00D8 && c<=0x00DE) ) {
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// lower case Latin-1 Supplement
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if ( (c >= 0x00E0 && c <= 0x00F6) || (c >= 0x00F8 && c <= 0x00FE) ) {
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if ( (c >= 0x0100 && c < 0x0138) || (c > 0x0149 && c < 0x0178) ) {
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// special case for capital I
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// if it's even, it's a capital and the lower case is c +1
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// if it's odd, it's a lower case and upper case is c-1
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if ( (c >= 0x0139 && c < 0x0149) || (c > 0x0178 && c < 0x017F) ) {
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// if it's odd, it's a capital and the lower case is c +1
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// if it's even, it's a lower case and upper case is c-1
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// need to improve this set
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if ( c >= 0x0200 && c <= 0x0217 ) {
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// Latin Extended Additional
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// Range: U+1E00 to U+1EFF
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// http://www.unicode.org/Unicode.charts/glyphless/U1E00.html
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// Spacing Modifier Leters
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// Range: U+02B0 to U+02FF
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// Combining Diacritical Marks
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// Range: U+0300 to U+036F
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// skip Greek for now
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// Range: U+0370 to U+03FF
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// Range: U+0400 to U+04FF
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if ( (c >= 0x0401 && c <= 0x040C) || ( c>= 0x040E && c <= 0x040F ) ) {
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if ( c >= 0x0410 && c <= 0x042F ) {
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if ( c >= 0x0430 && c<= 0x044F ) {
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if ( (c >= 0x0451 && c <= 0x045C) || (c >=0x045E && c<= 0x045F) ) {
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if ( c >= 0x0460 && c <= 0x047F ) {
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// Range: U+0530 to U+058F
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if ( c >= 0x0531 && c <= 0x0556 ) {
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if ( c >= 0x0561 && c < 0x0587 ) {
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// Range: U+0590 to U+05FF
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// Range: U+0600 to U+06FF
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// Range: U+0900 to U+097F
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// Range: U+0980 to U+09FF
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// Range: U+0A00 to U+0A7F
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// Range: U+0A80 to U+0AFF
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// Range: U+0B00 to U+0B7F
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// no capital / lower case
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// Range: U+0B80 to U+0BFF
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// no capital / lower case
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// Range: U+0C00 to U+0C7F
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// no capital / lower case
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// Range: U+0C80 to U+0CFF
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// no capital / lower case
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// Range: U+0D00 to U+0D7F
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// Range: U+0E00 to U+0E7F
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// Range: U+0E80 to U+0EFF
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// Range: U+0F00 to U+0FBF
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// Range: U+10A0 to U+10F0
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if ( c >= 0x10A0 && c <= 0x10C5 ) {
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if ( c >= 0x10D0 && c <= 0x10F5 ) {
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// Range: U+1100 to U+11FF
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// Range: U+1F00 to U+1FFF
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// General Punctuation
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// Range: U+2000 to U+206F
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// Superscripts and Subscripts
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// Range: U+2070 to U+209F
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// Range: U+20A0 to U+20CF
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// Combining Diacritical Marks for Symbols
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// Range: U+20D0 to U+20FF
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// Range: U+2150 to U+218F
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// Range: U+2190 to U+21FF
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// Mathematical Operators
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// Range: U+2200 to U+22FF
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// Miscellaneous Technical
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// Range: U+2300 to U+23FF
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// Range: U+2400 to U+243F
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// Optical Character Recognition
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// Range: U+2440 to U+245F
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// Enclosed Alphanumerics
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// Range: U+2460 to U+24FF
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// Range: U+2500 to U+257F
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// Range: U+2580 to U+259F
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// Range: U+25A0 to U+25FF
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// Miscellaneous Symbols
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// Range: U+2600 to U+26FF
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// Range: U+2700 to U+27BF
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// CJK Symbols and Punctuation
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// Range: U+3000 to U+303F
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// Range: U+3040 to U+309F
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// Range: U+30A0 to U+30FF
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// Range: U+3100 to U+312F
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// Hangul Compatibility Jamo
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// Range: U+3130 to U+318F
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// Range: U+3190 to U+319F
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// Enclosed CJK Letters and Months
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// Range: U+3200 to U+32FF
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// Range: U+3300 to U+33FF
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// Range: U+AC00 to U+D7A3
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// Range: U+D800 to U+DB7F
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// Private Use High Surrogates
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// Range: U+DB80 to U+DBFF
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// Range: U+DC00 to U+DFFF
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// Range: U+E000 to U+F8FF
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// CJK Compatibility Ideographs
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// Range: U+F900 to U+FAFF
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// Alphabetic Presentation Forms
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// Range: U+FB00 to U+FB4F
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// Arabic Presentation Forms-A
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// Range: U+FB50 to U+FDFF
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// Combining Half Marks
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// Range: U+FE20 to U+FE2F
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// CJK Compatibility Forms
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// Range: U+FE30 to U+FE4F
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// Small Form Variants
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// Range: U+FE50 to U+FE6F
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// Arabic Presentation Forms-B
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// Range: U+FE70 to U+FEFF
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// Halfwidth and Fullwidth Forms
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// Range: U+FF00 to U+FFEF
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if ( c >= 0xFF21 && c <= 0xFF3A ) {
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if ( c >= 0xFF41 && c <= 0xFF5A ) {
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// Range: U+FFF0 to U+FFFF
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function DecimalToHexString( n ) {
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for ( var i = 3; i >= 0; i-- ) {
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if ( n >= Math.pow(16, i) ){
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var t = Math.floor( n / Math.pow(16, i));
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n -= t * Math.pow(16, i);