зеркало из https://github.com/mozilla/pjs.git
153 строки
5.7 KiB
JavaScript
153 строки
5.7 KiB
JavaScript
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/**
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File Name: 15.5.4.6-1.js
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ECMA Section: 15.5.4.6 String.prototype.indexOf( searchString, pos)
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Description: If the given searchString appears as a substring of the
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result of converting this object to a string, at one or
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more positions that are at or to the right of the
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specified position, then the index of the leftmost such
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position is returned; otherwise -1 is returned. If
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positionis undefined or not supplied, 0 is assumed, so
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as to search all of the string.
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When the indexOf method is called with two arguments,
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searchString and pos, the following steps are taken:
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1. Call ToString, giving it the this value as its
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argument.
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2. Call ToString(searchString).
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3. Call ToInteger(position). (If position is undefined
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or not supplied, this step produces the value 0).
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4. Compute the number of characters in Result(1).
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5. Compute min(max(Result(3), 0), Result(4)).
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6. Compute the number of characters in the string that
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is Result(2).
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7. Compute the smallest possible integer k not smaller
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than Result(5) such that k+Result(6) is not greater
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than Result(4), and for all nonnegative integers j
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less than Result(6), the character at position k+j
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of Result(1) is the same as the character at position
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j of Result(2); but if there is no such integer k,
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then compute the value -1.
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8. Return Result(7).
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Note that the indexOf function is intentionally generic;
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it does not require that its this value be a String object.
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Therefore it can be transferred to other kinds of objects
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for use as a method.
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Author: christine@netscape.com
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Date: 2 october 1997
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*/
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var SECTION = "15.5.4.6-1";
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var VERSION = "ECMA_1";
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startTest();
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var TITLE = "String.protoype.indexOf";
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var TEST_STRING = new String( " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~" );
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writeHeaderToLog( SECTION + " "+ TITLE);
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var j = 0;
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for ( k = 0, i = 0x0020; i < 0x007e; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf(" +String.fromCharCode(i)+ ", 0)",
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k,
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TEST_STRING.indexOf( String.fromCharCode(i), 0 ) );
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}
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for ( k = 0, i = 0x0020; i < 0x007e; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf("+String.fromCharCode(i)+ ", "+ k +")",
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k,
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TEST_STRING.indexOf( String.fromCharCode(i), k ) );
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}
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for ( k = 0, i = 0x0020; i < 0x007e; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf("+String.fromCharCode(i)+ ", "+k+1+")",
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-1,
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TEST_STRING.indexOf( String.fromCharCode(i), k+1 ) );
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}
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for ( k = 0, i = 0x0020; i < 0x007d; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf("+(String.fromCharCode(i) +
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)) +", "+0+")",
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k,
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TEST_STRING.indexOf( (String.fromCharCode(i)+
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)),
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0 ) );
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}
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for ( k = 0, i = 0x0020; i < 0x007d; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf("+(String.fromCharCode(i) +
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)) +", "+ k +")",
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k,
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TEST_STRING.indexOf( (String.fromCharCode(i)+
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)),
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k ) );
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}
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for ( k = 0, i = 0x0020; i < 0x007d; i++, j++, k++ ) {
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new TestCase( SECTION,
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"String.indexOf("+(String.fromCharCode(i) +
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)) +", "+ k+1 +")",
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-1,
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TEST_STRING.indexOf( (String.fromCharCode(i)+
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String.fromCharCode(i+1)+
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String.fromCharCode(i+2)),
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k+1 ) );
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}
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new TestCase( SECTION, "String.indexOf(" +TEST_STRING + ", 0 )", 0, TEST_STRING.indexOf( TEST_STRING, 0 ) );
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new TestCase( SECTION, "String.indexOf(" +TEST_STRING + ", 1 )", -1, TEST_STRING.indexOf( TEST_STRING, 1 ));
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writeLineToLog( "TEST_STRING = new String(\" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\")" );
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test();
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