/**
* Get the enum value associated with an index.
*
* @param clazz The type of enum to retrieve.
* @param index The index must be between 0 and length() - 1.
* @return The enum value at the index location
* @throws JSONException if the key is not found or if the value cannot be converted to an enum.
*/
public <E extends Enum<E>> E getEnum(Class<E> clazz, int index) throws JSONException {
E val = optEnum(clazz, index);
if (val == null) {
// JSONException should really take a throwable argument.
// If it did, I would re-implement this with the Enum.valueOf
// method and place any thrown exception in the JSONException
throw new JSONException(
"JSONObject["
+ JSONObject.quote(Integer.toString(index))
+ "] is not an enum of type "
+ JSONObject.quote(clazz.getSimpleName())
+ ".");
}
return val;
}
public String toJSONString() {
return "{"
+ JSONObject.quote(this.aString)
+ ":"
+ JSONObject.doubleToString(this.aNumber)
+ "}";
}
static final Writer writeValue(Writer writer, Object value, int indentFactor, int indent)
throws JSONException, IOException {
if (value == null || value.equals(null)) {
writer.write("null");
} else if (value instanceof JSONObject) {
((JSONObject) value).write(writer, indentFactor, indent);
} else if (value instanceof JSONArray) {
((JSONArray) value).write(writer, indentFactor, indent);
} else if (value instanceof Map) {
new JSONObject((Map) value).write(writer, indentFactor, indent);
} else if (value instanceof Collection) {
new JSONArray((Collection) value).write(writer, indentFactor, indent);
} else if (value.getClass().isArray()) {
new JSONArray(value).write(writer, indentFactor, indent);
} else if (value instanceof Number) {
writer.write(numberToString((Number) value));
} else if (value instanceof Boolean) {
writer.write(value.toString());
} else if (value instanceof JSONString) {
Object o;
try {
o = ((JSONString) value).toJSONString();
} catch (Exception e) {
throw new JSONException(e);
}
writer.write(o != null ? o.toString() : quote(value.toString()));
} else {
quote(value.toString(), writer);
}
return writer;
}
/**
* Append a key. The key will be associated with the next value. In an object, every value must be
* preceded by a key.
*
* @param s A key string.
* @return this
* @throws JSONException If the key is out of place. For example, keys do not belong in arrays or
* if the key is null.
*/
public JSONWriter key(String s) throws JSONException {
if (s == null) {
throw new JSONException("Null key.");
}
if (this.mode == 'k') {
try {
if (this.comma) {
this.writer.write(',');
}
this.writer.write(JSONObject.quote(s));
this.writer.write(':');
this.comma = false;
this.mode = 'o';
return this;
} catch (IOException e) {
throw new JSONException(e);
}
}
throw new JSONException("Misplaced key.");
}
/**
* Append a key. The key will be associated with the next value. In an object, every value must be
* preceded by a key.
*
* @param string A key string.
* @return this
* @throws JSONException If the key is out of place. For example, keys do not belong in arrays or
* if the key is null.
*/
public JSONWriter key(String string) throws JSONException {
if (string == null) {
throw new JSONException("Null key.");
}
if (mode == 'k') {
try {
stack[top - 1].putOnce(string, Boolean.TRUE);
if (comma) {
writer.write(',');
}
writer.write(JSONObject.quote(string));
writer.write(':');
comma = false;
mode = 'o';
return this;
} catch (IOException e) {
throw new JSONException(e);
}
}
throw new JSONException("Misplaced key.");
}
