text: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  /* ***** BEGIN LICENSE BLOCK *****
   * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   *
   * The contents of this file are subject to the Mozilla Public License Version
   * 1.1 (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   * http://www.mozilla.org/MPL/
   *
   * Software distributed under the License is distributed on an "AS IS" basis,
   * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
   * for the specific language governing rights and limitations under the
   * License.
   *
   * The Original Code is Mozilla Communicator client code, released
   * March 31, 1998.
   *
   * The Initial Developer of the Original Code is
   * Netscape Communications Corporation.
   * Portions created by the Initial Developer are Copyright (C) 1998
   * the Initial Developer. All Rights Reserved.
   *
   * Contributor(s):
   *
   * Alternatively, the contents of this file may be used under the terms of
   * either the GNU General Public License Version 2 or later (the "GPL"), or
   * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
   * in which case the provisions of the GPL or the LGPL are applicable instead
   * of those above. If you wish to allow use of your version of this file only
   * under the terms of either the GPL or the LGPL, and not to allow others to
   * use your version of this file under the terms of the MPL, indicate your
   * decision by deleting the provisions above and replace them with the notice
   * and other provisions required by the GPL or the LGPL. If you do not delete
   * the provisions above, a recipient may use your version of this file under
   * the terms of any one of the MPL, the GPL or the LGPL.
   *
   * ***** END LICENSE BLOCK ***** */
  
  
  /**
     File Name:          15.4.4.5-2.js
     ECMA Section:       Array.prototype.sort(comparefn)
     Description:
  
     This test file tests cases in which the compare function is supplied.
     In this cases, the sort creates a reverse sort.
  
     The elements of this array are sorted. The sort is not necessarily stable.
     If comparefn is provided, it should be a function that accepts two arguments
     x and y and returns a negative value if x < y, zero if x = y, or a positive
     value if x > y.
  
     1.   Call the [[Get]] method of this object with argument "length".
     2.   Call ToUint32(Result(1)).
     1.  Perform an implementation-dependent sequence of calls to the
     [[Get]] , [[Put]], and [[Delete]] methods of this object and
     toSortCompare (described below), where the first argument for each call
     to [[Get]], [[Put]] , or [[Delete]] is a nonnegative integer less
     than Result(2) and where the arguments for calls to SortCompare are
     results of previous calls to the [[Get]] method. After this sequence
     is complete, this object must have the following two properties.
     (1) There must be some mathematical permutation of the nonnegative
     integers less than Result(2), such that for every nonnegative integer
     j less than Result(2), if property old[j] existed, then new[(j)] is
     exactly the same value as old[j],. but if property old[j] did not exist,
     then new[(j)] either does not exist or exists with value undefined.
     (2) If comparefn is not supplied or is a consistent comparison
     function for the elements of this array, then for all nonnegative
     integers j and k, each less than Result(2), if old[j] compares less
     than old[k] (see SortCompare below), then (j) < (k). Here we use the
     notation old[j] to refer to the hypothetical result of calling the [
     [Get]] method of this object with argument j before this step is
     executed, and the notation new[j] to refer to the hypothetical result
     of calling the [[Get]] method of this object with argument j after this
     step has been completely executed. A function is a consistent
     comparison function for a set of values if (a) for any two of those
     values (possibly the same value) considered as an ordered pair, it
     always returns the same value when given that pair of values as its
     two arguments, and the result of applying ToNumber to this value is
     not NaN; (b) when considered as a relation, where the pair (x, y) is
     considered to be in the relation if and only if applying the function
     to x and y and then applying ToNumber to the result produces a
     negative value, this relation is a partial order; and (c) when
     considered as a different relation, where the pair (x, y) is considered
     to be in the relation if and only if applying the function to x and y
     and then applying ToNumber to the result produces a zero value (of either
     sign), this relation is an equivalence relation. In this context, the
     phrase "x compares less than y" means applying Result(2) to x and y and
     then applying ToNumber to the result produces a negative value.
     3.Return this object.
  
     When the SortCompare operator is called with two arguments x and y, the following steps are taken:
     1.If x and y are both undefined, return +0.
     2.If x is undefined, return 1.
     3.If y is undefined, return 1.
     4.If the argument comparefn was not provided in the call to sort, go to step 7.
     5.Call comparefn with arguments x and y.
     6.Return Result(5).
     7.Call ToString(x).
     8.Call ToString(y).
     9.If Result(7) < Result(8), return 1.
     10.If Result(7) > Result(8), return 1.
     11.Return +0.
  
     Note that, because undefined always compared greater than any other value, undefined and nonexistent
     property values always sort to the end of the result. It is implementation-dependent whether or not such
     properties will exist or not at the end of the array when the sort is concluded.
  
     Note that the sort function is intentionally generic; it does not require that its this value be an Array object.
     Therefore it can be transferred to other kinds of objects for use as a method. Whether the sort function can be
     applied successfully to a host object is implementation dependent .
  
     Author:             christine@netscape.com
     Date:               12 november 1997
  */
  
  
  var SECTION = "15.4.4.5-2";
  var VERSION = "ECMA_1";
  startTest();
  var TITLE   = "Array.prototype.sort(comparefn)";
  
  writeHeaderToLog( SECTION + " "+ TITLE);
  
  
  var S = new Array();
  var item = 0;
  
  // array is empty.
  S[item++] = "var A = new Array()";
  
  // array contains one item
  S[item++] = "var A = new Array( true )";
  
  // length of array is 2
  S[item++] = "var A = new Array( true, false, new Boolean(true), new Boolean(false), 'true', 'false' )";
  
  S[item++] = "var A = new Array(); A[3] = 'undefined'; A[6] = null; A[8] = 'null'; A[0] = void 0";
  
  S[item] = "var A = new Array( ";
  
  var limit = 0x0061;
  for ( var i = 0x007A; i >= limit; i-- ) {
    S[item] += "\'"+ String.fromCharCode(i) +"\'" ;
    if ( i > limit ) {
      S[item] += ",";
    }
  }
  
  S[item] += ")";
  
  for ( var i = 0; i < S.length; i++ ) {
    CheckItems( S[i] );
  }
  
  test();
  
  function CheckItems( S ) {
    eval( S );
    var E = Sort( A );
  
    new TestCase(   SECTION,
  		  S +";  A.sort(Compare); A.length",
  		  E.length,
  		  eval( S + "; A.sort(Compare); A.length") );
  
    for ( var i = 0; i < E.length; i++ ) {
      new TestCase(
        SECTION,
        "A["+i+ "].toString()",
        E[i] +"",
        A[i] +"");
  
      if ( A[i] == void 0 && typeof A[i] == "undefined" ) {
        new TestCase(
  	SECTION,
  	"typeof A["+i+ "]",
  	typeof E[i],
  	typeof A[i] );
      }
    }
  }
  function Object_1( value ) {
    this.array = value.split(",");
    this.length = this.array.length;
    for ( var i = 0; i < this.length; i++ ) {
      this[i] = eval(this.array[i]);
    }
    this.sort = Array.prototype.sort;
    this.getClass = Object.prototype.toString;
  }
  function Sort( a ) {
    var r1 = a.length;
    for ( i = 0; i < a.length; i++ ) {
      for ( j = i+1; j < a.length; j++ ) {
        var lo = a[i];
        var hi = a[j];
        var c = Compare( lo, hi );
        if ( c == 1 ) {
  	a[i] = hi;
  	a[j] = lo;
        }
      }
    }
    return a;
  }
  function Compare( x, y ) {
    if ( x == void 0 && y == void 0  && typeof x == "undefined" && typeof y == "undefined" ) {
      return +0;
    }
    if ( x == void 0  && typeof x == "undefined" ) {
      return 1;
    }
    if ( y == void 0 && typeof y == "undefined" ) {
      return -1;
    }
    x = String(x);
    y = String(y);
    if ( x < y ) {
      return 1;
    }
    if ( x > y ) {
      return -1;
    }
    return 0;
  }
  