Source Code Cross Referenced for XMLWithScope.java in  » Scripting » rhino » org » mozilla » javascript » xml » impl » xmlbeans » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » rhino » org.mozilla.javascript.xml.impl.xmlbeans 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
002:         *
003:         * ***** BEGIN LICENSE BLOCK *****
004:         * Version: MPL 1.1/GPL 2.0
005:         *
006:         * The contents of this file are subject to the Mozilla Public License Version
007:         * 1.1 (the "License"); you may not use this file except in compliance with
008:         * the License. You may obtain a copy of the License at
009:         * http://www.mozilla.org/MPL/
010:         *
011:         * Software distributed under the License is distributed on an "AS IS" basis,
012:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013:         * for the specific language governing rights and limitations under the
014:         * License.
015:         *
016:         * The Original Code is Rhino code, released
017:         * May 6, 1999.
018:         *
019:         * The Initial Developer of the Original Code is
020:         * Netscape Communications Corporation.
021:         * Portions created by the Initial Developer are Copyright (C) 1997-1999
022:         * the Initial Developer. All Rights Reserved.
023:         *
024:         * Contributor(s):
025:         *   Norris Boyd
026:         *   Ethan Hugg
027:         *   Terry Lucas
028:         *   Milen Nankov
029:         *
030:         * Alternatively, the contents of this file may be used under the terms of
031:         * the GNU General Public License Version 2 or later (the "GPL"), in which
032:         * case the provisions of the GPL are applicable instead of those above. If
033:         * you wish to allow use of your version of this file only under the terms of
034:         * the GPL and not to allow others to use your version of this file under the
035:         * MPL, indicate your decision by deleting the provisions above and replacing
036:         * them with the notice and other provisions required by the GPL. If you do
037:         * not delete the provisions above, a recipient may use your version of this
038:         * file under either the MPL or the GPL.
039:         *
040:         * ***** END LICENSE BLOCK ***** */
041:
042:        package org.mozilla.javascript.xml.impl.xmlbeans;
043:
044:        import org.mozilla.javascript.*;
045:        import org.mozilla.javascript.xml.*;
046:
047:        final class XMLWithScope extends NativeWith {
048:            private static final long serialVersionUID = -696429282095170887L;
049:
050:            private XMLLibImpl lib;
051:            private int _currIndex;
052:            private XMLList _xmlList;
053:            private XMLObject _dqPrototype;
054:
055:            XMLWithScope(XMLLibImpl lib, Scriptable parent, XMLObject prototype) {
056:                super (parent, prototype);
057:                this .lib = lib;
058:            }
059:
060:            void initAsDotQuery() {
061:                XMLObject prototype = (XMLObject) getPrototype();
062:                // XMLWithScope also handles the .(xxx) DotQuery for XML
063:                // basically DotQuery is a for/in/with statement and in
064:                // the following 3 statements we setup to signal it's
065:                // DotQuery,
066:                // the index and the object being looped over.  The
067:                // xws.setPrototype is the scope of the object which is
068:                // is a element of the lhs (XMLList).
069:                _currIndex = 0;
070:                _dqPrototype = prototype;
071:                if (prototype instanceof  XMLList) {
072:                    XMLList xl = (XMLList) prototype;
073:                    if (xl.length() > 0) {
074:                        setPrototype((Scriptable) (xl.get(0, null)));
075:                    }
076:                }
077:                // Always return the outer-most type of XML lValue of
078:                // XML to left of dotQuery.
079:                _xmlList = new XMLList(lib);
080:            }
081:
082:            protected Object updateDotQuery(boolean value) {
083:                // Return null to continue looping
084:
085:                XMLObject seed = _dqPrototype;
086:                XMLList xmlL = _xmlList;
087:
088:                if (seed instanceof  XMLList) {
089:                    // We're a list so keep testing each element of the list if the
090:                    // result on the top of stack is true then that element is added
091:                    // to our result list.  If false, we try the next element.
092:                    XMLList orgXmlL = (XMLList) seed;
093:
094:                    int idx = _currIndex;
095:
096:                    if (value) {
097:                        xmlL.addToList(orgXmlL.get(idx, null));
098:                    }
099:
100:                    // More elements to test?
101:                    if (++idx < orgXmlL.length()) {
102:                        // Yes, set our new index, get the next element and
103:                        // reset the expression to run with this object as
104:                        // the WITH selector.
105:                        _currIndex = idx;
106:                        setPrototype((Scriptable) (orgXmlL.get(idx, null)));
107:
108:                        // continue looping
109:                        return null;
110:                    }
111:                } else {
112:                    // If we're not a XMLList then there's no looping
113:                    // just return DQPrototype if the result is true.
114:                    if (value) {
115:                        xmlL.addToList(seed);
116:                    }
117:                }
118:
119:                return xmlL;
120:            }
121:        }
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