net.sf.json.JSON Maven / Gradle / Ivy
Show all versions of jsonlib-to-easyjson Show documentation
/*
* Copyright 2019 the original author or authors.
*
* Licensed under the Apache, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at http://www.gnu.org/licenses/lgpl-3.0.html
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.sf.json;
import java.io.Serializable;
import java.io.Writer;
/**
* Marker interface, identifies a valid JSON value.
* A JSON value may be a {@link JSONObject}, a {@link JSONArray} or a
* {@link JSONNull}.
*
* @author Andres Almiray
*/
public interface JSON extends Serializable {
/**
* Returns true if this object is a JSONArray, false otherwise.
*/
boolean isArray();
/**
* Returns true if this object has no elements or keys.
*
* @throws JSONException if called on a 'null' object
*/
boolean isEmpty();
/**
* Returns the number of properties in an object or the size of the array.
*
* @return the size of an json object or array
* @throws JSONException if called on a 'null' object
*/
int size();
/**
* Make a prettyprinted JSON text.
*
* Warning: This method assumes that the data structure is acyclical.
*
* @param indentFactor The number of spaces to add to each level of
* indentation.
* @return a printable, displayable, portable, transmittable representation
* of the object, beginning with {
(left
* brace) and ending with }
(right
* brace).
* @throws JSONException If the object contains an invalid number.
*/
String toString(int indentFactor);
/**
* Make a prettyprinted JSON text.
*
* Warning: This method assumes that the data structure is acyclical.
*
* @param indentFactor The number of spaces to add to each level of
* indentation.
* @param indent The indentation of the top level.
* @return a printable, displayable, transmittable representation of the
* object, beginning with {
(left brace)
* and ending with }
(right brace).
* @throws JSONException If the object contains an invalid number.
*/
String toString(int indentFactor, int indent);
/**
* Write the contents as JSON text to a writer. For compactness, no
* whitespace is added.
*
* Warning: This method assumes that the data structure is acyclical.
*
* @return The writer.
* @throws JSONException
*/
Writer write(Writer writer);
}