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      1 /*
      2 * The contents of this file are subject to the Netscape Public
      3 * License Version 1.1 (the "License"); you may not use this file
      4 * except in compliance with the License. You may obtain a copy of
      5 * the License at http://www.mozilla.org/NPL/
      6 *
      7 * Software distributed under the License is distributed on an "AS  IS"
      8 * basis, WITHOUT WARRANTY OF ANY KIND, either expressed
      9 * or implied. See the License for the specific language governing
     10 * rights and limitations under the License.
     11 *
     12 * The Original Code is mozilla.org code.
     13 *
     14 * The Initial Developer of the Original Code is Netscape
     15 * Communications Corporation.  Portions created by Netscape are
     16 * Copyright (C) 1998 Netscape Communications Corporation.
     17 * All Rights Reserved.
     18 *
     19 * Contributor(s): pschwartau (at) netscape.com
     20 * Date: 07 February 2001
     21 *
     22 * Functionality common to Array testing -
     23 */
     24 //-------------------------------------------------------------------------------------------------
     25 var CHAR_LBRACKET = '[';
     26 var CHAR_RBRACKET = ']';
     27 var CHAR_QT_DBL = '"';
     28 var CHAR_QT = "'";
     29 var CHAR_NL = '\n';
     30 var CHAR_COMMA = ',';
     31 var CHAR_SPACE = ' ';
     32 var TYPE_STRING = typeof 'abc';
     33 
     34 
     35 /*
     36  * If available, arr.toSource() gives more detail than arr.toString()
     37  *
     38  * var arr = Array(1,2,'3');
     39  *
     40  * arr.toSource()
     41  * [1, 2, "3"]
     42  *
     43  * arr.toString()
     44  * 1,2,3
     45  *
     46  * But toSource() doesn't exist in Rhino, so use our own imitation, below -
     47  *
     48  */
     49 function formatArray(arr)
     50 {
     51   try
     52   {
     53     return arr.toSource();
     54   }
     55   catch(e)
     56   {
     57     return toSource(arr);
     58   }
     59 }
     60 
     61 
     62 
     63 /*
     64  * Imitate SpiderMonkey's arr.toSource() method:
     65  *
     66  * a) Double-quote each array element that is of string type
     67  * b) Represent |undefined| and |null| by empty strings
     68  * c) Delimit elements by a comma + single space
     69  * d) Do not add delimiter at the end UNLESS the last element is |undefined|
     70  * e) Add square brackets to the beginning and end of the string
     71  */
     72 function toSource(arr)
     73 {
     74   var delim = CHAR_COMMA + CHAR_SPACE;
     75   var elt = '';
     76   var ret = '';
     77   var len = arr.length;
     78 
     79   for (i=0; i<len; i++)
     80   {
     81     elt = arr[i];
     82 
     83     switch(true)
     84     {
     85       case (typeof elt === TYPE_STRING) :
     86         ret += doubleQuote(elt);
     87         break;
     88 
     89       case (elt === undefined || elt === null) :
     90         break; // add nothing but the delimiter, below -
     91 
     92       default:
     93         ret += elt.toString();
     94     }
     95 
     96     if ((i < len-1) || (elt === undefined))
     97       ret += delim;
     98   }
     99 
    100   return  CHAR_LBRACKET + ret + CHAR_RBRACKET;
    101 }
    102 
    103 
    104 function doubleQuote(text)
    105 {
    106   return CHAR_QT_DBL + text + CHAR_QT_DBL;
    107 }
    108 
    109 
    110 function singleQuote(text)
    111 {
    112   return CHAR_QT + text + CHAR_QT;
    113 }
    114