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      1 /**
      2  *  File Name:          String/match-003.js
      3  *  ECMA Section:       15.6.4.9
      4  *  Description:        Based on ECMA 2 Draft 7 February 1999
      5  *
      6  *  Author:             christine (at) netscape.com
      7  *  Date:               19 February 1999
      8  */
      9 
     10 /*
     11  *  String.match( regexp )
     12  *
     13  *  If regexp is not an object of type RegExp, it is replaced with result
     14  *  of the expression new RegExp(regexp). Let string denote the result of
     15  *  converting the this value to a string.  If regexp.global is false,
     16  *  return the result obtained by invoking RegExp.prototype.exec (see
     17  *  section 15.7.5.3) on regexp with string as parameter.
     18  *
     19  *  Otherwise, set the regexp.lastIndex property to 0 and invoke
     20  *  RegExp.prototype.exec repeatedly until there is no match. If there is a
     21  *  match with an empty string (in other words, if the value of
     22  *  regexp.lastIndex is left unchanged) increment regexp.lastIndex by 1.
     23  *  The value returned is an array with the properties 0 through n-1
     24  *  corresponding to the first element of the result of each matching
     25  *  invocation of RegExp.prototype.exec.
     26  *
     27  *  Note that the match function is intentionally generic; it does not
     28  *  require that its this value be a string object.  Therefore, it can be
     29  *  transferred to other kinds of objects for use as a method.
     30  */
     31 
     32     var SECTION = "String/match-003.js";
     33     var VERSION = "ECMA_2";
     34     var TITLE   = "String.prototype.match( regexp )";
     35 
     36     startTest();
     37 
     38     // the regexp argument is not a RegExp object
     39     // this is not a string object
     40 
     41 
     42 //  [if regexp.global is true] set the regexp.lastIndex property to 0 and
     43 //  invoke RegExp.prototype.exec repeatedly until there is no match. If
     44 //  there is a match with an empty string (in other words, if the value of
     45 //  regexp.lastIndex is left unchanged) increment regexp.lastIndex by 1.
     46 //  The value returned is an array with the properties 0 through n-1
     47 //  corresponding to the first element of the result of each matching invocation
     48 //  of RegExp.prototype.exec.
     49 
     50 
     51     // set the value of lastIndex
     52     re = /([\d]{5})([-\ ]?[\d]{4})?$/g;
     53 
     54 
     55     s = "Boston, MA 02134";
     56 
     57     AddGlobalRegExpCases( re,
     58                           "re = " + re,
     59                           s,
     60                           ["02134" ]);
     61 
     62     re.lastIndex = 0;
     63 
     64     AddGlobalRegExpCases(
     65                      re,
     66                      "re = " + re + "; re.lastIndex = 0 ",
     67                      s,
     68                      ["02134"]);
     69 
     70 
     71     re.lastIndex = s.length;
     72 
     73     AddGlobalRegExpCases(
     74                     re,
     75                     "re = " + re + "; re.lastIndex = " + s.length,
     76                     s,
     77                     ["02134"] );
     78 
     79     re.lastIndex = s.lastIndexOf("0");
     80 
     81     AddGlobalRegExpCases(
     82                     re,
     83                     "re = "+ re +"; re.lastIndex = " + s.lastIndexOf("0"),
     84                     s,
     85                     ["02134"]);
     86 
     87     re.lastIndex = s.lastIndexOf("0") + 1;
     88 
     89     AddGlobalRegExpCases(
     90                     re,
     91                     "re = " +re+ "; re.lastIndex = " + (s.lastIndexOf("0") +1),
     92                     s,
     93                     ["02134"]);
     94 
     95     test();
     96 
     97 function AddGlobalRegExpCases(
     98     regexp, str_regexp, string, matches_array ) {
     99 
    100   // prevent a runtime error
    101 
    102     if ( string.match(regexp) == null || matches_array == null ) {
    103         AddTestCase(
    104           string + ".match(" + str_regexp +")",
    105           matches_array,
    106           string.match(regexp) );
    107 
    108         return;
    109     }
    110 
    111     AddTestCase(
    112         "( " + string  + " ).match(" + str_regexp +").length",
    113         matches_array.length,
    114         string.match(regexp).length );
    115 
    116     var limit = matches_array.length > string.match(regexp).length ?
    117                 matches_array.length :
    118                 string.match(regexp).length;
    119 
    120     for ( var matches = 0; matches < limit; matches++ ) {
    121         AddTestCase(
    122             "( " + string + " ).match(" + str_regexp +")[" + matches +"]",
    123             matches_array[matches],
    124             string.match(regexp)[matches] );
    125     }
    126 }
    127