net.oneandone.mork.reflect

Class Identity

java.lang.Object

net.oneandone.mork.reflect.Function

net.oneandone.mork.reflect.Identity

All Implemented Interfaces:

Serializable

public class Identity
extends Function

Identity function. Invokation takes 1 argument and returns it unchanged. Can be used to case a Value.

See Also:

Serialized Form

Field Summary

Fields inherited from class net.oneandone.mork.reflect.Function

NO_CLASSES

Constructor Summary

Constructors

Constructor and Description
Identity(String nameInit, Class typeInit) Create an Identity.
Identity(String nameInit, Class resultInit, Class argInit) Create an Identity.

Method Summary

Modifier and Type	Method and Description
Class[]	getExceptionTypes()
String	getName() Gets the Function name.
Class[]	getParameterTypes() Gets the parameter types of this function.
Class	getReturnType() Gets the result type.
Object	invoke(Object[] paras) Takes 1 argument and returns it.
void	translate(Code code) Generate bytecode equivalent to invoke().

Methods inherited from class net.oneandone.mork.reflect.Function

invokeN, invokeN, invokeN, invokeN, matches, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Identity

public Identity(String nameInit,
                Class typeInit)

Create an Identity. Without conversion

Parameters:

nameInit - the Function name

typeInit - the argument and result type

Identity

public Identity(String nameInit,
                Class resultInit,
                Class argInit)

Create an Identity. With Conversion.

Parameters:

nameInit - the Function name

resultInit - the result type

argInit - the argument type

Method Detail

getName

public String getName()

Gets the Function name.

Specified by:

getName in class Function

Returns:

the Function name

getReturnType

public Class getReturnType()

Gets the result type.

Specified by:

getReturnType in class Function

Returns:

the result type

getParameterTypes

public Class[] getParameterTypes()

Description copied from class: Function

Gets the parameter types of this function.

Specified by:

getParameterTypes in class Function

Returns:

parameter types

getExceptionTypes

public Class[] getExceptionTypes()

Specified by:

getExceptionTypes in class Function

invoke

public Object invoke(Object[] paras)

Takes 1 argument and returns it. If this Identity is used to case the value, a possible runtime exception is thrown by java.lang.reflect.

Specified by:

invoke in class Function

Parameters:

paras - array of length 1

Returns:

the array element supplied

translate

public void translate(Code code)

Description copied from class: Function

Generate bytecode equivalent to invoke(). The generated code expects arguments and the result on the operand stack.

Specified by:

translate in class Function