/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /** * File Name: String/match-003.js * ECMA Section: 15.6.4.9 * Description: Based on ECMA 2 Draft 7 February 1999 * * Author: christine@netscape.com * Date: 19 February 1999 */ /* * String.match( regexp ) * * If regexp is not an object of type RegExp, it is replaced with result * of the expression new RegExp(regexp). Let string denote the result of * converting the this value to a string. If regexp.global is false, * return the result obtained by invoking RegExp.prototype.exec (see * section 15.7.5.3) on regexp with string as parameter. * * Otherwise, set the regexp.lastIndex property to 0 and invoke * RegExp.prototype.exec repeatedly until there is no match. If there is a * match with an empty string (in other words, if the value of * regexp.lastIndex is left unchanged) increment regexp.lastIndex by 1. * The value returned is an array with the properties 0 through n-1 * corresponding to the first element of the result of each matching * invocation of RegExp.prototype.exec. * * Note that the match function is intentionally generic; it does not * require that its this value be a string object. Therefore, it can be * transferred to other kinds of objects for use as a method. */ var SECTION = "String/match-003.js"; var VERSION = "ECMA_2"; var TITLE = "String.prototype.match( regexp )"; startTest(); // the regexp argument is not a RegExp object // this is not a string object // [if regexp.global is true] set the regexp.lastIndex property to 0 and // invoke RegExp.prototype.exec repeatedly until there is no match. If // there is a match with an empty string (in other words, if the value of // regexp.lastIndex is left unchanged) increment regexp.lastIndex by 1. // The value returned is an array with the properties 0 through n-1 // corresponding to the first element of the result of each matching invocation // of RegExp.prototype.exec. // set the value of lastIndex re = /([\d]{5})([-\ ]?[\d]{4})?$/g; s = "Boston, MA 02134"; AddGlobalRegExpCases( re, "re = " + re, s, ["02134" ]); re.lastIndex = 0; AddGlobalRegExpCases( re, "re = " + re + "; re.lastIndex = 0 ", s, ["02134"]); re.lastIndex = s.length; AddGlobalRegExpCases( re, "re = " + re + "; re.lastIndex = " + s.length, s, ["02134"] ); re.lastIndex = s.lastIndexOf("0"); AddGlobalRegExpCases( re, "re = "+ re +"; re.lastIndex = " + s.lastIndexOf("0"), s, ["02134"]); re.lastIndex = s.lastIndexOf("0") + 1; AddGlobalRegExpCases( re, "re = " +re+ "; re.lastIndex = " + (s.lastIndexOf("0") +1), s, ["02134"]); test(); function AddGlobalRegExpCases( regexp, str_regexp, string, matches_array ) { // prevent a runtime error if ( string.match(regexp) == null || matches_array == null ) { AddTestCase( string + ".match(" + str_regexp +")", matches_array, string.match(regexp) ); return; } AddTestCase( "( " + string + " ).match(" + str_regexp +").length", matches_array.length, string.match(regexp).length ); var limit = matches_array.length > string.match(regexp).length ? matches_array.length : string.match(regexp).length; for ( var matches = 0; matches < limit; matches++ ) { AddTestCase( "( " + string + " ).match(" + str_regexp +")[" + matches +"]", matches_array[matches], string.match(regexp)[matches] ); } }