jadex.bytecode

Class SASM

java.lang.Object

jadex.bytecode.SASM

public class SASM
extends java.lang.Object

Static ASM helper methods.

Field Summary

Fields

Modifier and Type	Field and Description
protected static WeakKeyValueMap<java.lang.ClassLoader,IByteCodeClassLoader>	SHARED_CLASSLOADERS Shared ClassLoader cache.
static boolean	SHARED_LOADERS_MODE Enables the shared bytecode classloader mode.

Constructor Summary

Constructors

Constructor and Description
SASM()

Method Summary

Modifier and Type	Method and Description
static IByteCodeClassLoader	createByteCodeClassLoader(java.lang.ClassLoader... parents) Creates a byte code ClassLoader.
static IByteCodeClassLoader	getByteCodeClassLoader(java.lang.ClassLoader parent) Generates a ByteCodeClassLoader for loading a generated class.
static IByteCodeClassLoader	getByteCodeClassLoader(java.lang.ClassLoader parent, boolean sharedloaders) Generates a ByteCodeClassLoader for loading a generated class.
static ClassNode	getClassNode(java.lang.Class<?> clazz, java.lang.ClassLoader classloader) Get a class node for a class.
static void	makeBasicType(InsnList nl, Type type) Make a value a basic type.
static void	makeObject(InsnList nl, Type type) Make a value to an object.
static int	makeObject(InsnList nl, Type arg, int pos) Make a value to an object.
static void	makeReturn(InsnList nl, Type type) Make a suitable return statement.
static void	pushImmediate(InsnList nl, int immediate) Push an immediate (constant) integer value onto the stack with the best set of instructions.
static void	pushImmediate(InsnList nl, long immediate) Push an immediate (constant) long value onto the stack with the best set of instructions.
static java.lang.Class<?>	toClass(java.lang.String name, byte[] data, java.lang.ClassLoader loader, java.security.ProtectionDomain domain) Transform byte Array into Class and define it in classloader.

Methods inherited from class java.lang.Object

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

Field Detail

SHARED_LOADERS_MODE

public static boolean SHARED_LOADERS_MODE

Enables the shared bytecode classloader mode. If false, a new classloader is generated for each generated class for easier unloading, but potentially wastes more memory.

SHARED_CLASSLOADERS

protected static final WeakKeyValueMap<java.lang.ClassLoader,IByteCodeClassLoader> SHARED_CLASSLOADERS

Shared ClassLoader cache.

Constructor Detail

SASM

public SASM()

Method Detail

pushImmediate

public static void pushImmediate(InsnList nl,
                                 int immediate)

Push an immediate (constant) integer value onto the stack with the best set of instructions.

Parameters:

nl - The instruction list.

immediate - The immediate value.

pushImmediate

public static void pushImmediate(InsnList nl,
                                 long immediate)

Push an immediate (constant) long value onto the stack with the best set of instructions.

Parameters:

nl - The instruction list.

immediate - The immediate value.

makeObject

public static void makeObject(InsnList nl,
                              Type type)

Make a value to an object.

Parameters:

nl - The instruction list.

type - The value type.

makeObject

public static int makeObject(InsnList nl,
                             Type arg,
                             int pos)

Make a value to an object.

Parameters:

nl - The instruction list.

type - The value type.

pos - The position of the value on the registers (default=1, 0 is this).

Returns:

The updated position value.

makeBasicType

public static void makeBasicType(InsnList nl,
                                 Type type)

Make a value a basic type.

Parameters:

nl - The instruction list.

type - The value type.

makeReturn

public static void makeReturn(InsnList nl,
                              Type type)

Make a suitable return statement.

Parameters:

nl - The instruction list.

type - The value type.

toClass

public static java.lang.Class<?> toClass(java.lang.String name,
                                         byte[] data,
                                         java.lang.ClassLoader loader,
                                         java.security.ProtectionDomain domain)

Transform byte Array into Class and define it in classloader.

Returns:

the loaded class or null, if the class is not valid, such as Map.entry "inner Classes".

getClassNode

public static ClassNode getClassNode(java.lang.Class<?> clazz,
                                     java.lang.ClassLoader classloader)

Get a class node for a class.

Parameters:

clazz - The clazz.

Returns:

The class node.

getByteCodeClassLoader

public static IByteCodeClassLoader getByteCodeClassLoader(java.lang.ClassLoader parent)

Generates a ByteCodeClassLoader for loading a generated class.

Parameters:

parent - Parent ClassLoader.

sharedloader - Set true, to use shared loaders.

Returns:

The ByteCodeClassLoader.

getByteCodeClassLoader

public static IByteCodeClassLoader getByteCodeClassLoader(java.lang.ClassLoader parent,
                                                          boolean sharedloaders)

Generates a ByteCodeClassLoader for loading a generated class.

Parameters:

parent - Parent ClassLoader.

sharedloader - Set true, to use shared loaders.

Returns:

The ByteCodeClassLoader.

createByteCodeClassLoader

public static final IByteCodeClassLoader createByteCodeClassLoader(java.lang.ClassLoader... parents)

Creates a byte code ClassLoader.

Parameters:

parents - ClassLoader parents, first parameters is the getParent() ClassLoader.

Returns:

The loader.