Package com.viaversion.viarewind.legacysupport.util

Class ReflectionUtil

java.lang.Object

com.viaversion.viarewind.legacysupport.util.ReflectionUtil

public class ReflectionUtil
extends Object

Common reflection utilities for Java 8 and newer.

Constructor Summary

Constructors

Constructor	Description
ReflectionUtil()

Method Summary

Modifier and Type	Method	Description
static Class<?>	failSafeGetClass(String name)
static Field	failSafeGetField(Class<?> clazz, String fieldName)	Get a field from a class, and print an error message if it fails.
static void	failSafeSetValue(Class<?> clazz, Object object, String name, Object value)	Set a field value, and print an error message if it fails.
static Method	findMethod(Class<?> clazz, String[] methodNames, Class<?>... parameterTypes)
static Field	getFieldAccessible(Class<?> clazz, String fieldName)	Gets and field from the fieldCache or directly and makes it accessible.
static Field	getFieldAndCache(Class<?> clazz, String fieldName)
static Method	getMethod(Class<?> clazz, String methodName, Class<?>... parameterTypes)	Recursively search for a method in the class and its superclasses.
static void	removeFinal(Field field)	Remove the final modifier from a field.
static void	setValue(Class<?> clazz, Object object, String name, Object value)	Unsafe wrapper for value setting which bypasses final checks.
static void	setValue(Class<?> clazz, Object object, String name, Object value, boolean isFinal)

Methods inherited from class java.lang.Object

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

Constructor Details

ReflectionUtil

public ReflectionUtil()

Method Details

findMethod

public static Method findMethod(Class<?> clazz,
 String[] methodNames,
 Class<?>... parameterTypes)

getMethod

public static Method getMethod(Class<?> clazz,
 String methodName,
 Class<?>... parameterTypes)

Recursively search for a method in the class and its superclasses. Returns null if the method is not found.

Parameters:

clazz - The class to search in

methodName - The name of the method

parameterTypes - The parameter types of the method

Returns:

The method if found, otherwise null

getFieldAndCache

public static Field getFieldAndCache(Class<?> clazz,
 String fieldName)

getFieldAccessible

public static Field getFieldAccessible(Class<?> clazz,
 String fieldName)

Gets and field from the fieldCache or directly and makes it accessible.

Parameters:

clazz - The class

fieldName - The field name

Returns:

The field

failSafeGetField

public static Field failSafeGetField(Class<?> clazz,
 String fieldName)

Get a field from a class, and print an error message if it fails.

Parameters:

clazz - The class

fieldName - The field name

Returns:

The field, or null if it fails

setValue

public static void setValue(Class<?> clazz,
 Object object,
 String name,
 Object value,
 boolean isFinal)
                     throws IllegalAccessException

Throws:

IllegalAccessException

removeFinal

public static void removeFinal(Field field)

Remove the final modifier from a field.

Parameters:

field - The field

setValue

public static void setValue(Class<?> clazz,
 Object object,
 String name,
 Object value)
                     throws IllegalAccessException

Unsafe wrapper for value setting which bypasses final checks.

Parameters:

clazz - The class

object - The object

name - The field name

value - The value

Throws:

IllegalAccessException - If the field cannot be accessed

failSafeSetValue

public static void failSafeSetValue(Class<?> clazz,
 Object object,
 String name,
 Object value)

Set a field value, and print an error message if it fails.

Parameters:

clazz - The class

object - The object

name - The field name

value - The value

failSafeGetClass

public static Class<?> failSafeGetClass(String name)