net.lenni0451.reflect.accessor

Class MethodAccessor

java.lang.Object

net.lenni0451.reflect.accessor.MethodAccessor

public class MethodAccessor
extends java.lang.Object

Generate an invoker interface instance for a method.
This can be used to call private methods without having to resort to reflection.
The implementation is generated at runtime using the internal ASM.

Constructor Summary

Constructors

Constructor and Description
MethodAccessor()

Method Summary

Modifier and Type	Method and Description
static <R> java.util.function.Function<java.lang.Object[],R>	makeArrayInvoker(java.lang.Object instance, java.lang.reflect.Method method) Create a new array invoker instance for the given method.
static <I,R> java.util.function.BiFunction<I,java.lang.Object[],R>	makeDynamicArrayInvoker(java.lang.reflect.Method method) Create a new dynamic array invoker instance for the given method.
static <I> I	makeDynamicInvoker(java.lang.Class<I> invokerClass, java.lang.reflect.Method method) Create a new dynamic invoker instance for the given method.
static <I> I	makeInvoker(java.lang.Class<I> invokerClass, java.lang.Object instance, java.lang.reflect.Method method) Create a new invoker instance for the given method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MethodAccessor

public MethodAccessor()

Method Detail

makeInvoker

public static <I> I makeInvoker(@Nonnull
                                java.lang.Class<I> invokerClass,
                                java.lang.Object instance,
                                @Nonnull
                                java.lang.reflect.Method method)

Create a new invoker instance for the given method.
The invoker class must have a method with the right amount of parameters and right return type.
Super types of the parameter types/return type are also allowed.
The instance parameter is only used if the method is not static.

Type Parameters:

I - The invoker interface type

Parameters:

invokerClass - The invoker interface class

instance - The instance of the class the method is in

method - The method to invoke

Returns:

The invoker instance implementation

makeArrayInvoker

public static <R> java.util.function.Function<java.lang.Object[],R> makeArrayInvoker(java.lang.Object instance,
                                                                                     @Nonnull
                                                                                     java.lang.reflect.Method method)

Create a new array invoker instance for the given method.
The method parameters are passed as an array. Make sure the types are correct (e.g. Double instead of double) and the order is correct.
The instance parameter is only used if the method is not static.

Type Parameters:

R - The return type

Parameters:

instance - The instance of the class the method is in

method - The method to invoke

Returns:

The invoker instance implementation

makeDynamicInvoker

public static <I> I makeDynamicInvoker(@Nonnull
                                       java.lang.Class<I> invokerClass,
                                       @Nonnull
                                       java.lang.reflect.Method method)

Create a new dynamic invoker instance for the given method.
The invoker class must have a method with the right amount of parameters and right return type. An instance parameter is required at the beginning of the parameter list.
Super types of the parameter types/return type are also allowed.
Only non-static methods can be used.

Type Parameters:

I - The invoker interface type

Parameters:

invokerClass - The invoker interface class

method - The method to invoke

Returns:

The invoker instance implementation

makeDynamicArrayInvoker

public static <I,R> java.util.function.BiFunction<I,java.lang.Object[],R> makeDynamicArrayInvoker(@Nonnull
                                                                                                  java.lang.reflect.Method method)

Create a new dynamic array invoker instance for the given method.
The first parameter is the instance of the class the method is in.
The second parameter is an array of the method parameters. Make sure the types are correct (e.g. Double instead of double) and the order is correct.
Only non-static methods can be used.

Type Parameters:

I - The instance type

R - The return type

Parameters:

method - The method to invoke

Returns:

The invoker instance implementation