net.bytebuddy.dynamic.loading

Class ClassInjector.UsingLookup.Dispatcher.ForJava9CapableVm

java.lang.Object

net.bytebuddy.dynamic.loading.ClassInjector.UsingLookup.Dispatcher.ForJava9CapableVm

All Implemented Interfaces:

ClassInjector.UsingLookup.Dispatcher

Enclosing interface:

ClassInjector.UsingLookup.Dispatcher

@HashCodeAndEqualsPlugin.Enhance
public static class ClassInjector.UsingLookup.Dispatcher.ForJava9CapableVm
extends java.lang.Object
implements ClassInjector.UsingLookup.Dispatcher

A dispatcher for a Java 9 capable VM that supports class definition via method handles.

Nested Class Summary

Nested classes/interfaces inherited from interface net.bytebuddy.dynamic.loading.ClassInjector.UsingLookup.Dispatcher

ClassInjector.UsingLookup.Dispatcher.Creator, ClassInjector.UsingLookup.Dispatcher.ForJava9CapableVm, ClassInjector.UsingLookup.Dispatcher.ForLegacyVm

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.reflect.Method	defineClass The java.lang.invoke.MethodHandles$Lookup#defineClass method.
private java.lang.reflect.Method	dropLookupMode The java.lang.invoke.MethodHandles$Lookup#dropLookupMode method.
private java.lang.reflect.Method	lookupClass The java.lang.invoke.MethodHandles$Lookup#lookupClass method.
private java.lang.reflect.Method	lookupModes The java.lang.invoke.MethodHandles$Lookup#lookupModes method.
private static java.lang.Object[]	NO_ARGUMENTS An empty array that can be used to indicate no arguments to avoid an allocation on a reflective call.
private java.lang.reflect.Method	privateLookupIn The java.lang.invoke.MethodHandles$#privateLookupIn method.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ForJava9CapableVm(java.lang.reflect.Method privateLookupIn, java.lang.reflect.Method lookupClass, java.lang.reflect.Method lookupModes, java.lang.reflect.Method dropLookupMode, java.lang.reflect.Method defineClass) Creates a new dispatcher for a Java 9 capable VM.

Method Summary

Modifier and Type	Method and Description
java.lang.Class<?>	defineClass(java.lang.Object lookup, byte[] binaryRepresentation) Defines a class.
java.lang.Object	dropLookupMode(java.lang.Object lookup, int mode) Drops a given lookup mode from a lookup instance.
boolean	isAlive() Indicates if this dispatcher is available on the current VM.
int	lookupModes(java.lang.Object lookup) Returns a lookup objects lookup types.
java.lang.Class<?>	lookupType(java.lang.Object lookup) Returns the lookup type for a given method handle lookup.
java.lang.Object	resolve(java.lang.Object lookup, java.lang.Class<?> type) Resolves the supplied lookup instance's access scope for the supplied type.

Methods inherited from class java.lang.Object

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

Field Detail

NO_ARGUMENTS

private static final java.lang.Object[] NO_ARGUMENTS

An empty array that can be used to indicate no arguments to avoid an allocation on a reflective call.

privateLookupIn

private final java.lang.reflect.Method privateLookupIn

The java.lang.invoke.MethodHandles$#privateLookupIn method.

lookupClass

private final java.lang.reflect.Method lookupClass

The java.lang.invoke.MethodHandles$Lookup#lookupClass method.

lookupModes

private final java.lang.reflect.Method lookupModes

The java.lang.invoke.MethodHandles$Lookup#lookupModes method.

dropLookupMode

private final java.lang.reflect.Method dropLookupMode

The java.lang.invoke.MethodHandles$Lookup#dropLookupMode method.

defineClass

private final java.lang.reflect.Method defineClass

The java.lang.invoke.MethodHandles$Lookup#defineClass method.

Constructor Detail

ForJava9CapableVm

protected ForJava9CapableVm(java.lang.reflect.Method privateLookupIn,
                            java.lang.reflect.Method lookupClass,
                            java.lang.reflect.Method lookupModes,
                            java.lang.reflect.Method dropLookupMode,
                            java.lang.reflect.Method defineClass)

Creates a new dispatcher for a Java 9 capable VM.

Parameters:

privateLookupIn - The java.lang.invoke.MethodHandles$#privateLookupIn method.

lookupClass - The java.lang.invoke.MethodHandles$Lookup#lookupClass method.

lookupModes - The java.lang.invoke.MethodHandles$Lookup#lookupModes method.

dropLookupMode - The java.lang.invoke.MethodHandles$Lookup#dropLookupMode method.

defineClass - The java.lang.invoke.MethodHandles$Lookup#defineClass method.

Method Detail

isAlive

public boolean isAlive()

Indicates if this dispatcher is available on the current VM.

Specified by:

isAlive in interface ClassInjector.UsingLookup.Dispatcher

Returns:

true if this dispatcher is alive.

lookupType

public java.lang.Class<?> lookupType(java.lang.Object lookup)

Returns the lookup type for a given method handle lookup.

Specified by:

lookupType in interface ClassInjector.UsingLookup.Dispatcher

Parameters:

lookup - The lookup instance.

Returns:

The lookup type.

lookupModes

public int lookupModes(java.lang.Object lookup)

Returns a lookup objects lookup types.

Specified by:

lookupModes in interface ClassInjector.UsingLookup.Dispatcher

Parameters:

lookup - The lookup instance.

Returns:

The modifiers indicating the instance's lookup modes.

dropLookupMode

public java.lang.Object dropLookupMode(java.lang.Object lookup,
                                       int mode)

Drops a given lookup mode from a lookup instance.

Specified by:

dropLookupMode in interface ClassInjector.UsingLookup.Dispatcher

Parameters:

lookup - The lookup instance.

mode - The modes to drop.

Returns:

A new lookup instance where the modes were dropped.

resolve

public java.lang.Object resolve(java.lang.Object lookup,
                                java.lang.Class<?> type)

Resolves the supplied lookup instance's access scope for the supplied type.

Specified by:

resolve in interface ClassInjector.UsingLookup.Dispatcher

Parameters:

lookup - The lookup to use.

type - The type to resolve the scope for.

Returns:

An appropriate lookup instance.

defineClass

public java.lang.Class<?> defineClass(java.lang.Object lookup,
                                      byte[] binaryRepresentation)

Defines a class.

Specified by:

defineClass in interface ClassInjector.UsingLookup.Dispatcher

Parameters:

lookup - The java.lang.invoke.MethodHandles$Lookup instance to use.

binaryRepresentation - The defined class's binary representation.

Returns:

The defined class.