org.rstudio.studio.client.common.JSONArrayBuilder.java Source code

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Here is the source code for org.rstudio.studio.client.common.JSONArrayBuilder.java

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/*
 * JSONArrayBuilder.java
 *
 * Copyright (C) 2009-17 by RStudio, Inc.
 *
 * Unless you have received this program directly from RStudio pursuant
 * to the terms of a commercial license agreement with RStudio, then
 * this program is licensed to you under the terms of version 3 of the
 * GNU Affero General Public License. This program is distributed WITHOUT
 * ANY EXPRESS OR IMPLIED WARRANTY, INCLUDING THOSE OF NON-INFRINGEMENT,
 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Please refer to the
 * AGPL (http://www.gnu.org/licenses/agpl-3.0.txt) for more details.
 *
 */
package org.rstudio.studio.client.common;

import com.google.gwt.core.client.JsArrayString;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONBoolean;
import com.google.gwt.json.client.JSONNull;
import com.google.gwt.json.client.JSONNumber;
import com.google.gwt.json.client.JSONString;
import com.google.gwt.json.client.JSONValue;

public class JSONArrayBuilder {
    public JSONArrayBuilder() {
        array_ = new JSONArray();
        index_ = 0;
    }

    public final JSONArray get() {
        return array_;
    }

    public final JSONArrayBuilder add(String value) {
        append(fromString(value));
        return this;
    }

    public final JSONArrayBuilder add(boolean value) {
        append(JSONBoolean.getInstance(value));
        return this;
    }

    public final JSONArrayBuilder add(int value) {
        append(new JSONNumber(value));
        return this;
    }

    public final JSONArrayBuilder add(double value) {
        append(new JSONNumber(value));
        return this;
    }

    public final JSONArrayBuilder add(JsArrayString value) {
        JSONArray array = new JSONArray();
        for (int i = 0, n = value.length(); i < n; i++)
            array.set(i, fromString(value.get(i)));
        append(array);
        return this;
    }

    private final JSONValue fromString(String value) {
        return (value == null) ? JSONNull.getInstance() : new JSONString(value);
    }

    private final void append(JSONValue value) {
        array_.set(index_++, value);
    }

    private final JSONArray array_;
    private int index_;
}