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:  * Date: 07 February 2001
michael@0:  *
michael@0:  * Functionality common to Array testing -
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: var CHAR_LBRACKET = '[';
michael@0: var CHAR_RBRACKET = ']';
michael@0: var CHAR_QT_DBL = '"';
michael@0: var CHAR_QT = "'";
michael@0: var CHAR_NL = '\n';
michael@0: var CHAR_COMMA = ',';
michael@0: var CHAR_SPACE = ' ';
michael@0: var TYPE_STRING = typeof 'abc';
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * If available, arr.toSource() gives more detail than arr.toString()
michael@0:  *
michael@0:  * var arr = Array(1,2,'3');
michael@0:  *
michael@0:  * arr.toSource()
michael@0:  * [1, 2, "3"]
michael@0:  *
michael@0:  * arr.toString()
michael@0:  * 1,2,3
michael@0:  *
michael@0:  * But toSource() doesn't exist in Rhino, so use our own imitation, below -
michael@0:  *
michael@0:  */
michael@0: function formatArray(arr)
michael@0: {
michael@0:   try
michael@0:   {
michael@0:     return arr.toSource();
michael@0:   }
michael@0:   catch(e)
michael@0:   {
michael@0:     return toSource(arr);
michael@0:   }
michael@0: }
michael@0: 
michael@0: 
michael@0: 
michael@0: /*
michael@0:  * Imitate SpiderMonkey's arr.toSource() method:
michael@0:  *
michael@0:  * a) Double-quote each array element that is of string type
michael@0:  * b) Represent |undefined| and |null| by empty strings
michael@0:  * c) Delimit elements by a comma + single space
michael@0:  * d) Do not add delimiter at the end UNLESS the last element is |undefined|
michael@0:  * e) Add square brackets to the beginning and end of the string
michael@0:  */
michael@0: function toSource(arr)
michael@0: {
michael@0:   var delim = CHAR_COMMA + CHAR_SPACE;
michael@0:   var elt = '';
michael@0:   var ret = '';
michael@0:   var len = arr.length;
michael@0: 
michael@0:   for (i=0; i<len; i++)
michael@0:   {
michael@0:     elt = arr[i];
michael@0: 
michael@0:     switch(true)
michael@0:     {
michael@0:     case (typeof elt === TYPE_STRING) :
michael@0:       ret += doubleQuote(elt);
michael@0:       break;
michael@0: 
michael@0:     case (elt === undefined || elt === null) :
michael@0:       break; // add nothing but the delimiter, below -
michael@0: 
michael@0:     default:
michael@0:       ret += elt.toString();
michael@0:     }
michael@0: 
michael@0:     if ((i < len-1) || (elt === undefined))
michael@0:       ret += delim;
michael@0:   }
michael@0: 
michael@0:   return  CHAR_LBRACKET + ret + CHAR_RBRACKET;
michael@0: }
michael@0: 
michael@0: 
michael@0: function doubleQuote(text)
michael@0: {
michael@0:   return CHAR_QT_DBL + text + CHAR_QT_DBL;
michael@0: }
michael@0: 
michael@0: 
michael@0: function singleQuote(text)
michael@0: {
michael@0:   return CHAR_QT + text + CHAR_QT;
michael@0: }
michael@0: