org.siphon.common.js.JSON.java Source code

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Here is the source code for org.siphon.common.js.JSON.java

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/*******************************************************************************
 * The MIT License (MIT)
 * Copyright  2015 Inshua,inshua@gmail.com, All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
 * associated documentation files (the Software?), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED AS IS?, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *******************************************************************************/
package org.siphon.common.js;

import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptException;

import jdk.nashorn.api.scripting.NashornScriptEngine;
import jdk.nashorn.api.scripting.ScriptObjectMirror;
import jdk.nashorn.internal.objects.NativeError;
import jdk.nashorn.internal.objects.NativeEvalError;
import jdk.nashorn.internal.objects.NativeObject;
import jdk.nashorn.internal.objects.NativeRangeError;
import jdk.nashorn.internal.objects.NativeReferenceError;
import jdk.nashorn.internal.objects.NativeSyntaxError;
import jdk.nashorn.internal.objects.NativeTypeError;
import jdk.nashorn.internal.objects.NativeURIError;
import jdk.nashorn.internal.runtime.ConsString;

import org.apache.commons.lang3.ObjectUtils;

public class JSON {

    private ScriptObjectMirror json;

    public JSON(ScriptEngine jsEngine) {
        try {
            this.json = (ScriptObjectMirror) jsEngine.eval("JSON");
        } catch (ScriptException e) {
        }
    }

    public JSON(ScriptObjectMirror json) {
        this.json = json;
    }

    public String stringify(Object obj) throws UnsupportedConversionException {
        if (obj instanceof ScriptObjectMirror) {
            return this.stringify(((ScriptObjectMirror) obj).to(Object.class));
        }
        try {
            return (String) json.callMember("stringify", obj);
        } catch (Exception e) {
            throw new UnsupportedConversionException("json stringify failed", e);
        }
    }

    public String tryStringify(Object obj) {
        if (obj instanceof ScriptObjectMirror) {
            return this.tryStringify(((ScriptObjectMirror) obj).to(Object.class));
        }
        try {
            return (String) json.callMember("stringify", obj);
        } catch (Exception e) {
            return obj.toString();
        }
    }

    public Object parse(String jsonStr) throws Exception {
        try {
            return this.json.callMember("parse", jsonStr);
        } catch (Exception e) {
            throw new Exception(json + " cannot parsed", e);
        } finally {
        }
    }

}