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+/* -*- tab-width: 2; 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/. */
+
+
+/**
+ 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 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(
+ 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(
+ "A["+i+ "].toString()",
+ E[i] +"",
+ A[i] +"");
+
+ if ( A[i] == void 0 && typeof A[i] == "undefined" ) {
+ new TestCase(
+ "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;
+}