net.oneandone.mork.reflect

Class Composition

java.lang.Object

net.oneandone.mork.reflect.Function

net.oneandone.mork.reflect.Composition

All Implemented Interfaces:

Serializable

public class Composition
extends Function

Composition of two functions. Invokation first invokes the so-called parameter Function. The result is used for the so-called computed argument to the so-called base Function. The arguments of the Composition is the argument list of the base Function with the computed argument sustituted by the arguments of the parameter Function.

See Also:

Serialized Form

Field Summary

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

NO_CLASSES

Constructor Summary

Constructors

Constructor and Description
Composition(Function baseInit, int idxInit, Function paraInit) Create a Composition.

Method Summary

Modifier and Type	Method and Description
static Composition	create(Function baseInit, int idxInit, Function paraInit)
Class[]	getExceptionTypes()
String	getName() Gets the Function name.
Class[]	getParameterTypes() Gets the argument count.
Class	getReturnType() Gets the result type.
Object	invoke(Object[] allVals) Invokes the composed Functions.
void	translate(Code dest) 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

Composition

public Composition(Function baseInit,
                   int idxInit,
                   Function paraInit)

Create a Composition.

Parameters:

baseInit - base Function for this Composition

idxInit - computed argument for this Composition

paraInit - parameter Function for this Composition

Method Detail

create

public static Composition create(Function baseInit,
                                 int idxInit,
                                 Function paraInit)

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. The result type is the result type of the base Function.

Specified by:

getReturnType in class Function

Returns:

the result type

getParameterTypes

public Class[] getParameterTypes()

Gets the argument count. The parameter function takes away 1 argument from the base function, but it adds its own arguments.

Specified by:

getParameterTypes in class Function

Returns:

the argument count

getExceptionTypes

public Class[] getExceptionTypes()

Specified by:

getExceptionTypes in class Function

invoke

public Object invoke(Object[] allVals)
              throws InvocationTargetException

Invokes the composed Functions. The computed argument is computed by a call to the parameter Function.

Specified by:

invoke in class Function

Parameters:

allVals - arguments to call the Function with; length and types must conform the argument count and the argument types of the Function

Returns:

the result returned by the base Function.

Throws:

InvocationTargetException

translate

public void translate(Code dest)

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