de.intarsys.tools.functor
Class EmptyDeclarationBlock

java.lang.Object
  de.intarsys.tools.functor.EmptyDeclarationBlock

All Implemented Interfaces:

IDeclaration, IDeclarationBlock

public class EmptyDeclarationBlock
extends Object
implements IDeclarationBlock

Helper implementation for an empty declaration block.

Constructor Summary

EmptyDeclarationBlock()

Method Summary

void	addDeclarationElement(IDeclarationElement declaration) Add an IDeclarationElement to this block;
void	clear() Remove all IDeclarationElement instances from this block;
IDeclaration	copy() Create a copy of this.
Object	getDeclarationContext() An optional declaration context.
IDeclarationElement	getDeclarationElement(String name) The IDeclarationElement for the given name.
IDeclarationElement[]	getDeclarationElements() The array of IDeclarationElement instances in this block.
boolean	isBlock() true if this declaration has child elements itself.
void	moveDown(IDeclarationElement declaration) Move element to the position after its current position.
void	moveUp(IDeclarationElement declaration) Move element to the position before its current position.
boolean	removeDeclarationElement(IDeclarationElement declaration) Remove an IDeclarationElement from this block;
int	size() The number of declarations in this block.

Methods inherited from class java.lang.Object

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

Constructor Detail

EmptyDeclarationBlock

public EmptyDeclarationBlock()

Method Detail

addDeclarationElement

public void addDeclarationElement(IDeclarationElement declaration)

Description copied from interface: IDeclarationBlock

Add an IDeclarationElement to this block;

Specified by:

addDeclarationElement in interface IDeclarationBlock

clear

public void clear()

Description copied from interface: IDeclarationBlock

Remove all IDeclarationElement instances from this block;

Specified by:

clear in interface IDeclarationBlock

copy

public IDeclaration copy()

Description copied from interface: IDeclaration

Create a copy of this.

Specified by:

copy in interface IDeclaration

Returns:

A copy of this.

getDeclarationContext

public Object getDeclarationContext()

Description copied from interface: IDeclaration

An optional declaration context. This may be for example the object that will launch the IFunctorCall later and has parsed some declarations on startup.

Specified by:

getDeclarationContext in interface IDeclaration

Returns:

An optional declaration context.

getDeclarationElement

public IDeclarationElement getDeclarationElement(String name)

Description copied from interface: IDeclarationBlock

The IDeclarationElement for the given name.

Specified by:

getDeclarationElement in interface IDeclarationBlock

Returns:

The IDeclarationElement for the given name.

getDeclarationElements

public IDeclarationElement[] getDeclarationElements()

Description copied from interface: IDeclarationBlock

The array of IDeclarationElement instances in this block.

Specified by:

getDeclarationElements in interface IDeclarationBlock

Returns:

The array of IDeclarationElement instances in this block.

isBlock

public boolean isBlock()

Description copied from interface: IDeclaration

true if this declaration has child elements itself.

A IDeclarationElement may be a IDeclarationBlock, supporting nested declarations. You should not use "instanceof IDeclarationBlock" to check this behavior but this method.

Specified by:

isBlock in interface IDeclaration

Returns:

true if this declaration has child elements itself.

moveDown

public void moveDown(IDeclarationElement declaration)

Description copied from interface: IDeclarationBlock

Move element to the position after its current position. This means that the element declaration will be performed later.

If the element is the last declaration or not contained in the block this method does nothing.

Specified by:

moveDown in interface IDeclarationBlock

moveUp

public void moveUp(IDeclarationElement declaration)

Description copied from interface: IDeclarationBlock

Move element to the position before its current position. This means that the element declaration will be performed earlier.

If the element is the first declaration or not contained in the block this method does nothing.

Specified by:

moveUp in interface IDeclarationBlock

removeDeclarationElement

public boolean removeDeclarationElement(IDeclarationElement declaration)

Description copied from interface: IDeclarationBlock

Remove an IDeclarationElement from this block;

Specified by:

removeDeclarationElement in interface IDeclarationBlock

Returns:

true if declaration was removed

size

public int size()

Description copied from interface: IDeclarationBlock

The number of declarations in this block.

Specified by:

size in interface IDeclarationBlock

Returns:

The number of declarations in this block.