001/*
002 * (C) Copyright 2015-2016 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Thierry Delprat <tdelprat@nuxeo.com>
018 */
019package org.nuxeo.automation.scripting.internals;
020
021import java.util.ArrayList;
022import java.util.Calendar;
023import java.util.HashMap;
024import java.util.List;
025import java.util.Map;
026
027import jdk.nashorn.api.scripting.ScriptObjectMirror;
028
029/**
030 * @since 7.2
031 */
032public class ScriptObjectMirrors {
033
034    private static final String JAVASCRIPT_MAP_CLASS_TYPE = "Object";
035
036    private static final String JAVASCRIPT_DATE_CLASS_TYPE = "Date";
037
038    private ScriptObjectMirrors() {
039        // empty
040    }
041
042    public static Object unwrap(ScriptObjectMirror jso) {
043        if (jso.isArray()) {
044            return unwrapList(jso);
045        } else if (JAVASCRIPT_MAP_CLASS_TYPE.equals(jso.getClassName())) {
046            return unwrapMap(jso);
047        } else if (JAVASCRIPT_DATE_CLASS_TYPE.equals(jso.getClassName())) {
048            return unwrapDate(jso);
049        } else {
050            throw new UnsupportedOperationException(jso.getClassName() + " is not supported!");
051        }
052    }
053
054    /**
055     * @since 8.4
056     */
057    public static List<Object> unwrapList(ScriptObjectMirror jso) {
058        if (!jso.isArray()) {
059            throw new IllegalArgumentException("JavaScript input is not an Array!");
060        }
061        List<Object> l = new ArrayList<>();
062        for (Object o : jso.values()) {
063            if (o instanceof ScriptObjectMirror) {
064                l.add(unwrap((ScriptObjectMirror) o));
065            } else {
066                l.add(o);
067            }
068        }
069        return l;
070    }
071
072    public static Map<String, Object> unwrapMap(ScriptObjectMirror jso) {
073        if (!JAVASCRIPT_MAP_CLASS_TYPE.equals(jso.getClassName())) {
074            throw new IllegalArgumentException("JavaScript input is not an Object!");
075        }
076        Map<String, Object> result = new HashMap<>();
077        for (String k : jso.keySet()) {
078            Object o = jso.get(k);
079            if (o instanceof ScriptObjectMirror) {
080                result.put(k, unwrap((ScriptObjectMirror) o));
081            } else {
082                result.put(k, o);
083            }
084        }
085        return result;
086    }
087
088    /**
089     * @since 8.4
090     */
091    public static Calendar unwrapDate(ScriptObjectMirror jso) {
092        if (!JAVASCRIPT_DATE_CLASS_TYPE.equals(jso.getClassName())) {
093            throw new IllegalArgumentException("JavaScript input is not a Date!");
094        }
095        Calendar cal = Calendar.getInstance();
096        cal.setTimeInMillis(((Double) jso.callMember("getTime")).longValue());
097        return cal;
098    }
099
100    public static Object wrap(Map<String, Object> map) {
101        return ScriptObjectMirror.wrap(map, null);
102    }
103
104}