60 lines
2.1 KiB
Java
60 lines
2.1 KiB
Java
package org.json;
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/*
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Public Domain.
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*/
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import java.io.StringWriter;
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/**
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* JSONStringer provides a quick and convenient way of producing JSON text.
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* The texts produced strictly conform to JSON syntax rules. No whitespace is
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* added, so the results are ready for transmission or storage. Each instance of
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* JSONStringer can produce one JSON text.
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* <p>
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* A JSONStringer instance provides a <code>value</code> method for appending
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* values to the
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* text, and a <code>key</code>
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* method for adding keys before values in objects. There are <code>array</code>
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* and <code>endArray</code> methods that make and bound array values, and
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* <code>object</code> and <code>endObject</code> methods which make and bound
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* object values. All of these methods return the JSONWriter instance,
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* permitting cascade style. For example, <pre>
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* myString = new JSONStringer()
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* .object()
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* .key("JSON")
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* .value("Hello, World!")
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* .endObject()
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* .toString();</pre> which produces the string <pre>
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* {"JSON":"Hello, World!"}</pre>
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* <p>
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* The first method called must be <code>array</code> or <code>object</code>.
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* There are no methods for adding commas or colons. JSONStringer adds them for
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* you. Objects and arrays can be nested up to 200 levels deep.
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* <p>
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* This can sometimes be easier than using a JSONObject to build a string.
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* @author JSON.org
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* @version 2015-12-09
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*/
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public class JSONStringer extends JSONWriter {
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/**
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* Make a fresh JSONStringer. It can be used to build one JSON text.
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*/
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public JSONStringer() {
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super(new StringWriter());
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}
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/**
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* Return the JSON text. This method is used to obtain the product of the
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* JSONStringer instance. It will return <code>null</code> if there was a
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* problem in the construction of the JSON text (such as the calls to
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* <code>array</code> were not properly balanced with calls to
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* <code>endArray</code>).
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* @return The JSON text.
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*/
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@Override
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public String toString() {
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return this.mode == 'd' ? this.writer.toString() : null;
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}
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}
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