michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: /**
michael@0:    File Name:          15.4.1.2.js
michael@0:    ECMA Section:       15.4.1.2 Array(len)
michael@0: 
michael@0:    Description:        When Array is called as a function rather than as a
michael@0:    constructor, it creates and initializes a new array
michael@0:    object.  Thus, the function call Array(...) is
michael@0:    equivalent to the object creationi new Array(...) with
michael@0:    the same arguments.
michael@0: 
michael@0:    An array is created and returned as if by the
michael@0:    expression new Array(len).
michael@0: 
michael@0:    Author:             christine@netscape.com
michael@0:    Date:               7 october 1997
michael@0: */
michael@0: var SECTION = "15.4.1.2";
michael@0: var VERSION = "ECMA_1";
michael@0: startTest();
michael@0: var TITLE   = "Array Constructor Called as a Function:  Array(len)";
michael@0: 
michael@0: writeHeaderToLog( SECTION + " "+ TITLE);
michael@0: 
michael@0: new TestCase( SECTION, 
michael@0: 	      "(Array()).length",            
michael@0: 	      0,                             
michael@0: 	      (Array()).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(0)).length",           
michael@0: 	      0,                             
michael@0: 	      (Array(0)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(1)).length",           
michael@0: 	      1,                             
michael@0: 	      (Array(1)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(10)).length",          
michael@0: 	      10,                            
michael@0: 	      (Array(10)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array('1')).length",         
michael@0: 	      1,                             
michael@0: 	      (Array('1')).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(1000)).length",        
michael@0: 	      1000,                          
michael@0: 	      (Array(1000)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array('1000')).length",      
michael@0: 	      1,                             
michael@0: 	      (Array('1000')).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(4294967295)).length",  
michael@0: 	      ToUint32(4294967295),          
michael@0: 	      (Array(4294967295)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(Math.pow(2,31)-1)).length",    
michael@0: 	      ToUint32(Math.pow(2,31)-1),    
michael@0: 	      (Array(Math.pow(2,31)-1)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(Math.pow(2,31))).length",      
michael@0: 	      ToUint32(Math.pow(2,31)),      
michael@0: 	      (Array(Math.pow(2,31))).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(Math.pow(2,31)+1)).length",    
michael@0: 	      ToUint32(Math.pow(2,31)+1),    
michael@0: 	      (Array(Math.pow(2,31)+1)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array('8589934592')).length",
michael@0: 	      1,                             
michael@0: 	      (Array("8589934592")).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array('4294967296')).length",
michael@0: 	      1,                             
michael@0: 	      (Array("4294967296")).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(1073741823)).length",  
michael@0: 	      ToUint32(1073741823),          
michael@0: 	      (Array(1073741823)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array(1073741824)).length",  
michael@0: 	      ToUint32(1073741824),	       
michael@0: 	      (Array(1073741824)).length );
michael@0: 
michael@0: new TestCase( SECTION,
michael@0: 	      "(Array('a string')).length",  
michael@0: 	      1,                             
michael@0: 	      (Array("a string")).length );
michael@0: 
michael@0: test();
michael@0: 
michael@0: function ToUint32( n ) {
michael@0:   n = Number( n );
michael@0:   var sign = ( n < 0 ) ? -1 : 1;
michael@0: 
michael@0:   if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
michael@0:     return 0;
michael@0:   }
michael@0:   n = sign * Math.floor( Math.abs(n) )
michael@0: 
michael@0:     n = n % Math.pow(2,32);
michael@0: 
michael@0:   if ( n < 0 ){
michael@0:     n += Math.pow(2,32);
michael@0:   }
michael@0: 
michael@0:   return ( n );
michael@0: }