298 lines
10 KiB
Java
298 lines
10 KiB
Java
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0
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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 Rhino code, released
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* May 6, 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) 1997-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Norris Boyd
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* Igor Bukanov
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* Brendan Eich
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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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* the GNU General Public License Version 2 or later (the "GPL"), in which
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* case the provisions of the GPL are applicable instead of those above. If
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* you wish to allow use of your version of this file only under the terms of
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* the GPL and not to allow others to use your version of this file under the
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* MPL, indicate your decision by deleting the provisions above and replacing
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* them with the notice and other provisions required by the GPL. If you do
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* not delete the provisions above, a recipient may use your version of this
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* file under either the MPL or the GPL.
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*
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* ***** END LICENSE BLOCK ***** */
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package org.mozilla.javascript.regexp;
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import org.mozilla.javascript.*;
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/**
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* This class implements the RegExp constructor native object.
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*
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* Revision History:
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* Implementation in C by Brendan Eich
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* Initial port to Java by Norris Boyd from jsregexp.c version 1.36
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* Merged up to version 1.38, which included Unicode support.
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* Merged bug fixes in version 1.39.
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* Merged JSFUN13_BRANCH changes up to 1.32.2.11
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*
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* @author Brendan Eich
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* @author Norris Boyd
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*/
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class NativeRegExpCtor extends BaseFunction
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{
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static final long serialVersionUID = -5733330028285400526L;
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NativeRegExpCtor()
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{
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}
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@Override
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public String getFunctionName()
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{
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return "RegExp";
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}
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@Override
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public Object call(Context cx, Scriptable scope, Scriptable thisObj,
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Object[] args)
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{
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if (args.length > 0 && args[0] instanceof NativeRegExp &&
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(args.length == 1 || args[1] == Undefined.instance))
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{
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return args[0];
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}
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return construct(cx, scope, args);
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}
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@Override
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public Scriptable construct(Context cx, Scriptable scope, Object[] args)
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{
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NativeRegExp re = new NativeRegExp();
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re.compile(cx, scope, args);
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ScriptRuntime.setObjectProtoAndParent(re, scope);
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return re;
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}
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private static RegExpImpl getImpl()
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{
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Context cx = Context.getCurrentContext();
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return (RegExpImpl) ScriptRuntime.getRegExpProxy(cx);
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}
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// #string_id_map#
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private static final int
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Id_multiline = 1,
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Id_STAR = 2, // #string=$*#
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Id_input = 3,
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Id_UNDERSCORE = 4, // #string=$_#
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Id_lastMatch = 5,
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Id_AMPERSAND = 6, // #string=$&#
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Id_lastParen = 7,
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Id_PLUS = 8, // #string=$+#
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Id_leftContext = 9,
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Id_BACK_QUOTE = 10, // #string=$`#
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Id_rightContext = 11,
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Id_QUOTE = 12, // #string=$'#
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DOLLAR_ID_BASE = 12;
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private static final int
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Id_DOLLAR_1 = DOLLAR_ID_BASE + 1, // #string=$1#
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Id_DOLLAR_2 = DOLLAR_ID_BASE + 2, // #string=$2#
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Id_DOLLAR_3 = DOLLAR_ID_BASE + 3, // #string=$3#
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Id_DOLLAR_4 = DOLLAR_ID_BASE + 4, // #string=$4#
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Id_DOLLAR_5 = DOLLAR_ID_BASE + 5, // #string=$5#
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Id_DOLLAR_6 = DOLLAR_ID_BASE + 6, // #string=$6#
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Id_DOLLAR_7 = DOLLAR_ID_BASE + 7, // #string=$7#
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Id_DOLLAR_8 = DOLLAR_ID_BASE + 8, // #string=$8#
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Id_DOLLAR_9 = DOLLAR_ID_BASE + 9, // #string=$9#
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MAX_INSTANCE_ID = DOLLAR_ID_BASE + 9;
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@Override
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protected int getMaxInstanceId()
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{
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return super.getMaxInstanceId() + MAX_INSTANCE_ID;
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}
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@Override
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protected int findInstanceIdInfo(String s) {
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int id;
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// #generated# Last update: 2001-05-24 16:09:31 GMT+02:00
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L0: { id = 0; String X = null; int c;
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L: switch (s.length()) {
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case 2: switch (s.charAt(1)) {
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case '&': if (s.charAt(0)=='$') {id=Id_AMPERSAND; break L0;} break L;
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case '\'': if (s.charAt(0)=='$') {id=Id_QUOTE; break L0;} break L;
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case '*': if (s.charAt(0)=='$') {id=Id_STAR; break L0;} break L;
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case '+': if (s.charAt(0)=='$') {id=Id_PLUS; break L0;} break L;
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case '1': if (s.charAt(0)=='$') {id=Id_DOLLAR_1; break L0;} break L;
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case '2': if (s.charAt(0)=='$') {id=Id_DOLLAR_2; break L0;} break L;
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case '3': if (s.charAt(0)=='$') {id=Id_DOLLAR_3; break L0;} break L;
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case '4': if (s.charAt(0)=='$') {id=Id_DOLLAR_4; break L0;} break L;
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case '5': if (s.charAt(0)=='$') {id=Id_DOLLAR_5; break L0;} break L;
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case '6': if (s.charAt(0)=='$') {id=Id_DOLLAR_6; break L0;} break L;
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case '7': if (s.charAt(0)=='$') {id=Id_DOLLAR_7; break L0;} break L;
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case '8': if (s.charAt(0)=='$') {id=Id_DOLLAR_8; break L0;} break L;
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case '9': if (s.charAt(0)=='$') {id=Id_DOLLAR_9; break L0;} break L;
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case '_': if (s.charAt(0)=='$') {id=Id_UNDERSCORE; break L0;} break L;
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case '`': if (s.charAt(0)=='$') {id=Id_BACK_QUOTE; break L0;} break L;
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} break L;
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case 5: X="input";id=Id_input; break L;
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case 9: c=s.charAt(4);
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if (c=='M') { X="lastMatch";id=Id_lastMatch; }
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else if (c=='P') { X="lastParen";id=Id_lastParen; }
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else if (c=='i') { X="multiline";id=Id_multiline; }
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break L;
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case 11: X="leftContext";id=Id_leftContext; break L;
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case 12: X="rightContext";id=Id_rightContext; break L;
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}
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if (X!=null && X!=s && !X.equals(s)) id = 0;
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}
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// #/generated#
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if (id == 0) return super.findInstanceIdInfo(s);
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int attr;
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switch (id) {
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case Id_multiline:
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case Id_STAR:
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case Id_input:
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case Id_UNDERSCORE:
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attr = PERMANENT;
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break;
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default:
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attr = PERMANENT | READONLY;
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break;
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}
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return instanceIdInfo(attr, super.getMaxInstanceId() + id);
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}
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// #/string_id_map#
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@Override
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protected String getInstanceIdName(int id)
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{
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int shifted = id - super.getMaxInstanceId();
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if (1 <= shifted && shifted <= MAX_INSTANCE_ID) {
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switch (shifted) {
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case Id_multiline: return "multiline";
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case Id_STAR: return "$*";
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case Id_input: return "input";
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case Id_UNDERSCORE: return "$_";
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case Id_lastMatch: return "lastMatch";
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case Id_AMPERSAND: return "$&";
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case Id_lastParen: return "lastParen";
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case Id_PLUS: return "$+";
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case Id_leftContext: return "leftContext";
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case Id_BACK_QUOTE: return "$`";
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case Id_rightContext: return "rightContext";
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case Id_QUOTE: return "$'";
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}
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// Must be one of $1..$9, convert to 0..8
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int substring_number = shifted - DOLLAR_ID_BASE - 1;
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char[] buf = { '$', (char)('1' + substring_number) };
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return new String(buf);
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}
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return super.getInstanceIdName(id);
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}
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@Override
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protected Object getInstanceIdValue(int id)
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{
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int shifted = id - super.getMaxInstanceId();
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if (1 <= shifted && shifted <= MAX_INSTANCE_ID) {
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RegExpImpl impl = getImpl();
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Object stringResult;
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switch (shifted) {
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case Id_multiline:
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case Id_STAR:
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return ScriptRuntime.wrapBoolean(impl.multiline);
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case Id_input:
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case Id_UNDERSCORE:
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stringResult = impl.input;
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break;
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case Id_lastMatch:
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case Id_AMPERSAND:
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stringResult = impl.lastMatch;
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break;
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case Id_lastParen:
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case Id_PLUS:
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stringResult = impl.lastParen;
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break;
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case Id_leftContext:
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case Id_BACK_QUOTE:
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stringResult = impl.leftContext;
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break;
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case Id_rightContext:
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case Id_QUOTE:
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stringResult = impl.rightContext;
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break;
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default:
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{
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// Must be one of $1..$9, convert to 0..8
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int substring_number = shifted - DOLLAR_ID_BASE - 1;
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stringResult = impl.getParenSubString(substring_number);
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break;
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}
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}
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return (stringResult == null) ? "" : stringResult.toString();
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}
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return super.getInstanceIdValue(id);
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}
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@Override
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protected void setInstanceIdValue(int id, Object value)
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{
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int shifted = id - super.getMaxInstanceId();
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switch (shifted) {
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case Id_multiline:
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case Id_STAR:
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getImpl().multiline = ScriptRuntime.toBoolean(value);
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return;
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case Id_input:
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case Id_UNDERSCORE:
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getImpl().input = ScriptRuntime.toString(value);
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return;
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}
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super.setInstanceIdValue(id, value);
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}
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}
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