viewer.Json.java Source code

Introduction

Here is the source code for viewer.Json.java

Source

// This file is part of Droopy.
// Copyright (C) 2011  Benoit Sigoure.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.  This program is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
// General Public License for more details.  You should have received a copy
// of the GNU Lesser General Public License along with this program.  If not,
// see <http://www.gnu.org/licenses/>.
package viewer;

import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONObject;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;

public final class Json {

    private final JSONValue root; // Either a JSONObject or a JSONArray.

    /** Private ctor, must use factory methods instead.  */
    private Json(final JSONValue root) {
        this.root = root;
    }

    public static Json object() {
        return new Json(new JSONObject());
    }

    public static Json object(final String field, final String value) {
        return object().add(field, value);
    }

    public static Json object(final String field, final long value) {
        return object().add(field, value);
    }

    public static Json object(final String field, final double value) {
        return object().add(field, value);
    }

    public static Json object(final String field, final Json value) {
        return object().add(field, value.root);
    }

    public static Json array() {
        return new Json(new JSONArray());
    }

    private Json add(final String field, final JSONValue value) {
        JSONObject obj;
        if ((obj = root.isObject()) != null) {
            obj.put(field, value);
        } else {
            final JSONArray array = root.isArray();
            obj = new JSONObject();
            obj.put(field, value);
            array.set(array.size(), obj);
        }
        return this;
    }

    public Json add(final String field, final Json value) {
        return add(field, value.root);
    }

    public Json add(final String field, final long value) {
        return add(field, new JSONNumber(value));
    }

    public Json add(final String field, final double value) {
        return add(field, new JSONNumber(value));
    }

    public Json add(final String field, final String value) {
        return add(field, new JSONString(value));
    }

    public String toString() {
        return root.toString();
    }

}