Implementors of serializable lambdas, such as compilers or language - * runtime libraries, are expected to ensure that instances deserialize properly. - * One means to do so is to ensure that the {@code writeReplace} method returns - * an instance of {@code SerializedLambda}, rather than allowing default - * serialization to proceed. - * - *
{@code SerializedLambda} has a {@code readResolve} method that looks for
- * a (possibly private) static method called
- * {@code $deserializeLambda$(SerializedLambda)} in the capturing class, invokes
- * that with itself as the first argument, and returns the result. Lambda classes
- * implementing {@code $deserializeLambda$} are responsible for validating
- * that the properties of the {@code SerializedLambda} are consistent with a
- * lambda actually captured by that class.
- *
- * @see LambdaMetafactory
- */
-public final class SerializedLambda implements Serializable {
- private static final long serialVersionUID = 8025925345765570181L;
- private final Class capturingClass;
- private final String functionalInterfaceClass;
- private final String functionalInterfaceMethodName;
- private final String functionalInterfaceMethodSignature;
- private final String implClass;
- private final String implMethodName;
- private final String implMethodSignature;
- private final int implMethodKind;
- private final String instantiatedMethodType;
- private final Object[] capturedArgs;
-
- /**
- * Create a {@code SerializedLambda} from the low-level information present
- * at the lambda factory site.
- *
- * @param capturingClass The class in which the lambda expression appears
- * @param functionalInterfaceClass Name, in slash-delimited form, of static
- * type of the returned lambda object
- * @param functionalInterfaceMethodName Name of the functional interface
- * method for the present at the
- * lambda factory site
- * @param functionalInterfaceMethodSignature Signature of the functional
- * interface method present at
- * the lambda factory site
- * @param implMethodKind Method handle kind for the implementation method
- * @param implClass Name, in slash-delimited form, for the class holding
- * the implementation method
- * @param implMethodName Name of the implementation method
- * @param implMethodSignature Signature of the implementation method
- * @param instantiatedMethodType The signature of the primary functional
- * interface method after type variables
- * are substituted with their instantiation
- * from the capture site
- * @param capturedArgs The dynamic arguments to the lambda factory site,
- * which represent variables captured by
- * the lambda
- */
- public SerializedLambda(Class capturingClass,
- String functionalInterfaceClass,
- String functionalInterfaceMethodName,
- String functionalInterfaceMethodSignature,
- int implMethodKind,
- String implClass,
- String implMethodName,
- String implMethodSignature,
- String instantiatedMethodType,
- Object[] capturedArgs) {
- this.capturingClass = capturingClass;
- this.functionalInterfaceClass = functionalInterfaceClass;
- this.functionalInterfaceMethodName = functionalInterfaceMethodName;
- this.functionalInterfaceMethodSignature = functionalInterfaceMethodSignature;
- this.implMethodKind = implMethodKind;
- this.implClass = implClass;
- this.implMethodName = implMethodName;
- this.implMethodSignature = implMethodSignature;
- this.instantiatedMethodType = instantiatedMethodType;
- this.capturedArgs = Objects.requireNonNull(capturedArgs).clone();
- }
-
- /**
- * Get the name of the class that captured this lambda.
- * @return the name of the class that captured this lambda
- */
- public String getCapturingClass() {
- return capturingClass.getName().replace('.', '/');
- }
-
- /**
- * Get the name of the invoked type to which this
- * lambda has been converted
- * @return the name of the functional interface class to which
- * this lambda has been converted
- */
- public String getFunctionalInterfaceClass() {
- return functionalInterfaceClass;
- }
-
- /**
- * Get the name of the primary method for the functional interface
- * to which this lambda has been converted.
- * @return the name of the primary methods of the functional interface
- */
- public String getFunctionalInterfaceMethodName() {
- return functionalInterfaceMethodName;
- }
-
- /**
- * Get the signature of the primary method for the functional
- * interface to which this lambda has been converted.
- * @return the signature of the primary method of the functional
- * interface
- */
- public String getFunctionalInterfaceMethodSignature() {
- return functionalInterfaceMethodSignature;
- }
-
- /**
- * Get the name of the class containing the implementation
- * method.
- * @return the name of the class containing the implementation
- * method
- */
- public String getImplClass() {
- return implClass;
- }
-
- /**
- * Get the name of the implementation method.
- * @return the name of the implementation method
- */
- public String getImplMethodName() {
- return implMethodName;
- }
-
- /**
- * Get the signature of the implementation method.
- * @return the signature of the implementation method
- */
- public String getImplMethodSignature() {
- return implMethodSignature;
- }
-
- /**
- * Get the method handle kind (see {@link MethodHandleInfo}) of
- * the implementation method.
- * @return the method handle kind of the implementation method
- */
- public int getImplMethodKind() {
- return implMethodKind;
- }
-
- /**
- * Get the signature of the primary functional interface method
- * after type variables are substituted with their instantiation
- * from the capture site.
- * @return the signature of the primary functional interface method
- * after type variable processing
- */
- public final String getInstantiatedMethodType() {
- return instantiatedMethodType;
- }
-
- /**
- * Get the count of dynamic arguments to the lambda capture site.
- * @return the count of dynamic arguments to the lambda capture site
- */
- public int getCapturedArgCount() {
- return capturedArgs.length;
- }
-
- /**
- * Get a dynamic argument to the lambda capture site.
- * @param i the argument to capture
- * @return a dynamic argument to the lambda capture site
- */
- public Object getCapturedArg(int i) {
- return capturedArgs[i];
- }
-
- private Object readResolve() throws ReflectiveOperationException {
- try {
- Method deserialize = AccessController.doPrivileged(new PrivilegedExceptionAction