tests/mozilla/js1_5/Expressions/shell.js

   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@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 }