Package com.intellij.util

Class ReflectionUtil

java.lang.Object

com.intellij.util.ReflectionUtil

public final class ReflectionUtil
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static java.lang.Class<?>	boxType(java.lang.Class<?> type)
static java.util.List<java.lang.reflect.Field>	collectFields(java.lang.Class<?> clazz)
static <T> boolean	compareFields(T defaultSettings, T newSettings, Predicate<? super java.lang.reflect.Field> useField)
static <T> boolean	comparePublicNonFinalFields(T first, T second)
static void	copyFields(java.lang.reflect.Field [] fields, java.lang.Object from, java.lang.Object to)
static boolean	copyFields(java.lang.reflect.Field [] fields, java.lang.Object from, java.lang.Object to, DifferenceFilter<?> diffFilter)
static void	copyFieldValue(java.lang.Object from, java.lang.Object to, java.lang.reflect.Field field)
static <T> T	createInstance(java.lang.reflect.Constructor<T> constructor, java.lang.Object... args)
static java.lang.String	declarationToString(java.lang.reflect.GenericDeclaration anInterface)
static java.lang.reflect.Field	findAssignableField(java.lang.Class<?> clazz, java.lang.Class<?> fieldType, java.lang.String fieldName)
static java.lang.Class<?>	findCallerClass(int framesToSkip) Returns the class this method was called 'framesToSkip' frames up the caller hierarchy.
static java.lang.reflect.Field	findField(java.lang.Class<?> clazz, java.lang.Class<?> type, java.lang.String name)
static java.lang.reflect.Field	findFieldInHierarchy(java.lang.Class<?> rootClass, java.util.function.Predicate<? super java.lang.reflect.Field> checker)
static java.lang.reflect.Method	findMethod(java.util.Collection<java.lang.reflect.Method> methods, java.lang.String name, java.lang.Class<?>... parameters)
static java.lang.Class<?>	forName(java.lang.String fqn)
static java.lang.reflect.Type []	getActualTypeArguments(java.lang.reflect.ParameterizedType parameterizedType)
static java.lang.Class<?>	getCallerClass(int stackFrameCount)
static java.util.List<java.lang.reflect.Field>	getClassDeclaredFields(java.lang.Class<?> aClass)
static java.util.List<java.lang.reflect.Method>	getClassDeclaredMethods(java.lang.Class<?> aClass)
static java.util.List<java.lang.reflect.Method>	getClassDeclaredMethods(java.lang.Class<?> aClass, boolean includeSynthetic)
static java.util.List<java.lang.reflect.Method>	getClassPublicMethods(java.lang.Class<?> aClass)
static java.util.List<java.lang.reflect.Method>	getClassPublicMethods(java.lang.Class<?> aClass, boolean includeSynthetic)
static java.lang.reflect.Field	getDeclaredField(java.lang.Class<?> aClass, java.lang.String name)
static java.lang.reflect.Method	getDeclaredMethod(java.lang.Class<?> aClass, java.lang.String name, java.lang.Class<?>... parameters)
static <T> java.lang.reflect.Constructor<T>	getDefaultConstructor(java.lang.Class<T> aClass)
static <T> T	getField(java.lang.Class<?> objectClass, java.lang.Object object, java.lang.Class<T> fieldType, java.lang.String fieldName)
static <T> T	getFieldValue(java.lang.reflect.Field field, java.lang.Object object)
static java.lang.Class<?>	getGrandCallerClass()
static java.lang.reflect.Method	getMethod(java.lang.Class<?> aClass, java.lang.String name, java.lang.Class<?>... parameters)
static java.lang.Class<?>	getMethodDeclaringClass(java.lang.Class<?> instanceClass, java.lang.String methodName, java.lang.Class<?>... parameters)
static java.lang.Class<?>	getRawType(java.lang.reflect.Type type)
static <T> T	getStaticFieldValue(java.lang.Class<?> objectClass, java.lang.Class<T> fieldType, java.lang.String fieldName)
static <T,V> java.lang.reflect.Field	getTheOnlyVolatileInstanceFieldOfClass(java.lang.Class<T> ownerClass, java.lang.Class<V> fieldType)
static boolean	isAssignable(java.lang.Class<?> ancestor, java.lang.Class<?> descendant)
static boolean	isInstanceField(java.lang.reflect.Field field)
static <T> T	newInstance(java.lang.Class<T> aClass) Like Class.newInstance() but also handles private classes
static <T> T	newInstance(java.lang.Class<T> aClass, boolean isKotlinDataClassesSupported)
static void	resetField(java.lang.Class<?> clazz, java.lang.Class<?> type, java.lang.String name)
static void	resetField(java.lang.Object object, java.lang.Class<?> type, java.lang.String name)
static void	resetField(java.lang.Object object, java.lang.reflect.Field field)
static void	resetField(java.lang.Object object, java.lang.String name)
static java.lang.reflect.Type	resolveVariable(java.lang.reflect.TypeVariable<?> variable, java.lang.Class<?> classType)
static java.lang.reflect.Type	resolveVariable(java.lang.reflect.TypeVariable<?> variable, java.lang.Class<?> classType, boolean resolveInInterfacesOnly)
static java.lang.reflect.Type	resolveVariableInHierarchy(java.lang.reflect.TypeVariable<?> variable, java.lang.Class<?> aClass)
static <T> boolean	setField(java.lang.Class<?> objectClass, java.lang.Object object, java.lang.Class<T> fieldType, java.lang.String fieldName, T value)
static java.lang.Class<?>	substituteGenericType(java.lang.reflect.Type genericType, java.lang.reflect.Type classType)

Methods inherited from class java.lang.Object

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

Method Detail

resolveVariable

public static java.lang.reflect.Type resolveVariable(java.lang.reflect.TypeVariable<?> variable,
                                                     java.lang.Class<?> classType)

resolveVariable

public static java.lang.reflect.Type resolveVariable(java.lang.reflect.TypeVariable<?> variable,
                                                     java.lang.Class<?> classType,
                                                     boolean resolveInInterfacesOnly)

declarationToString

public static java.lang.String declarationToString(java.lang.reflect.GenericDeclaration anInterface)

getRawType

public static java.lang.Class<?> getRawType(java.lang.reflect.Type type)

getActualTypeArguments

public static java.lang.reflect.Type [] getActualTypeArguments(java.lang.reflect.ParameterizedType parameterizedType)

substituteGenericType

public static java.lang.Class<?> substituteGenericType(java.lang.reflect.Type genericType,
                                                       java.lang.reflect.Type classType)

collectFields

public static java.util.List<java.lang.reflect.Field> collectFields(java.lang.Class<?> clazz)

findField

public static java.lang.reflect.Field findField(java.lang.Class<?> clazz,
                                                java.lang.Class<?> type,
                                                java.lang.String name)
                                         throws java.lang.NoSuchFieldException

Throws:

java.lang.NoSuchFieldException

findAssignableField

public static java.lang.reflect.Field findAssignableField(java.lang.Class<?> clazz,
                                                          java.lang.Class<?> fieldType,
                                                          java.lang.String fieldName)
                                                   throws java.lang.NoSuchFieldException

Throws:

java.lang.NoSuchFieldException

findFieldInHierarchy

public static java.lang.reflect.Field findFieldInHierarchy(java.lang.Class<?> rootClass,
                                                           java.util.function.Predicate<? super java.lang.reflect.Field> checker)

resetField

public static void resetField(java.lang.Class<?> clazz,
                              java.lang.Class<?> type,
                              java.lang.String name)

resetField

public static void resetField(java.lang.Object object,
                              java.lang.Class<?> type,
                              java.lang.String name)

resetField

public static void resetField(java.lang.Object object,
                              java.lang.String name)

resetField

public static void resetField(java.lang.Object object,
                              java.lang.reflect.Field field)

findMethod

public static java.lang.reflect.Method findMethod(java.util.Collection<java.lang.reflect.Method> methods,
                                                  java.lang.String name,
                                                  java.lang.Class<?>... parameters)

getMethod

public static java.lang.reflect.Method getMethod(java.lang.Class<?> aClass,
                                                 java.lang.String name,
                                                 java.lang.Class<?>... parameters)

getDeclaredMethod

public static java.lang.reflect.Method getDeclaredMethod(java.lang.Class<?> aClass,
                                                         java.lang.String name,
                                                         java.lang.Class<?>... parameters)

getDeclaredField

public static java.lang.reflect.Field getDeclaredField(java.lang.Class<?> aClass,
                                                       java.lang.String name)

getClassPublicMethods

public static java.util.List<java.lang.reflect.Method> getClassPublicMethods(java.lang.Class<?> aClass)

getClassPublicMethods

public static java.util.List<java.lang.reflect.Method> getClassPublicMethods(java.lang.Class<?> aClass,
                                                                             boolean includeSynthetic)

getClassDeclaredMethods

public static java.util.List<java.lang.reflect.Method> getClassDeclaredMethods(java.lang.Class<?> aClass)

getClassDeclaredMethods

public static java.util.List<java.lang.reflect.Method> getClassDeclaredMethods(java.lang.Class<?> aClass,
                                                                               boolean includeSynthetic)

getClassDeclaredFields

public static java.util.List<java.lang.reflect.Field> getClassDeclaredFields(java.lang.Class<?> aClass)

getMethodDeclaringClass

public static java.lang.Class<?> getMethodDeclaringClass(java.lang.Class<?> instanceClass,
                                                         java.lang.String methodName,
                                                         java.lang.Class<?>... parameters)

getField

public static <T> T getField(java.lang.Class<?> objectClass,
                             java.lang.Object object,
                             java.lang.Class<T> fieldType,
                             java.lang.String fieldName)

getStaticFieldValue

public static <T> T getStaticFieldValue(java.lang.Class<?> objectClass,
                                        java.lang.Class<T> fieldType,
                                        java.lang.String fieldName)

getFieldValue

public static <T> T getFieldValue(java.lang.reflect.Field field,
                                  java.lang.Object object)

isInstanceField

public static boolean isInstanceField(java.lang.reflect.Field field)

setField

public static <T> boolean setField(java.lang.Class<?> objectClass,
                                   java.lang.Object object,
                                   java.lang.Class<T> fieldType,
                                   java.lang.String fieldName,
                                   T value)

resolveVariableInHierarchy

public static java.lang.reflect.Type resolveVariableInHierarchy(java.lang.reflect.TypeVariable<?> variable,
                                                                java.lang.Class<?> aClass)

getDefaultConstructor

public static <T> java.lang.reflect.Constructor<T> getDefaultConstructor(java.lang.Class<T> aClass)

newInstance

public static <T> T newInstance(java.lang.Class<T> aClass)

Like Class.newInstance() but also handles private classes

newInstance

public static <T> T newInstance(java.lang.Class<T> aClass,
                                boolean isKotlinDataClassesSupported)

createInstance

public static <T> T createInstance(java.lang.reflect.Constructor<T> constructor,
                                   java.lang.Object... args)

getGrandCallerClass

public static java.lang.Class<?> getGrandCallerClass()

getCallerClass

public static java.lang.Class<?> getCallerClass(int stackFrameCount)

copyFields

public static void copyFields(java.lang.reflect.Field [] fields,
                              java.lang.Object from,
                              java.lang.Object to)

copyFields

public static boolean copyFields(java.lang.reflect.Field [] fields,
                                 java.lang.Object from,
                                 java.lang.Object to,
                                 DifferenceFilter<?> diffFilter)

comparePublicNonFinalFields

public static <T> boolean comparePublicNonFinalFields(T first,
                                                      T second)

compareFields

public static <T> boolean compareFields(T defaultSettings,
                                        T newSettings,
                                        Predicate<? super java.lang.reflect.Field> useField)

copyFieldValue

public static void copyFieldValue(java.lang.Object from,
                                  java.lang.Object to,
                                  java.lang.reflect.Field field)
                           throws java.lang.IllegalAccessException

Throws:

java.lang.IllegalAccessException

forName

public static java.lang.Class<?> forName(java.lang.String fqn)

boxType

public static java.lang.Class<?> boxType(java.lang.Class<?> type)

getTheOnlyVolatileInstanceFieldOfClass

public static <T,V> java.lang.reflect.Field getTheOnlyVolatileInstanceFieldOfClass(java.lang.Class<T> ownerClass,
                                                                                   java.lang.Class<V> fieldType)

findCallerClass

public static java.lang.Class<?> findCallerClass(int framesToSkip)

Returns the class this method was called 'framesToSkip' frames up the caller hierarchy. NOTE: Extremely expensive! Please consider not using it. These aren't the droids you're looking for!

isAssignable

public static boolean isAssignable(java.lang.Class<?> ancestor,
                                   java.lang.Class<?> descendant)