wyal.heap

Class AbstractSyntacticHeap

java.lang.Object

wyal.heap.AbstractSyntacticHeap

All Implemented Interfaces:

SyntacticHeap

Direct Known Subclasses:

StructurallyEquivalentHeap, WyalFile

public abstract class AbstractSyntacticHeap
extends Object
implements SyntacticHeap

Field Summary

Fields

Modifier and Type	Field and Description
protected ArrayList<SyntacticItem>	syntacticItems

Constructor Summary

Constructors

Constructor and Description
AbstractSyntacticHeap()

Method Summary

Modifier and Type	Method and Description
<T extends SyntacticItem> T	allocate(T item) Allocate a given syntactic item into this heap.
int	getIndexOf(SyntacticItem item) Determine the index of a given syntactic item in this heap.
SyntacticItem	getSyntacticItem(int index) Return the ith syntactic item in this heap.
<T extends SyntacticItem> List<T>	getSyntacticItems(Class<T> kind)
void	print(PrintWriter out)
int	size() Get the number of items in the heap.

Methods inherited from class java.lang.Object

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

Field Detail

syntacticItems

protected final ArrayList<SyntacticItem> syntacticItems

Constructor Detail

AbstractSyntacticHeap

public AbstractSyntacticHeap()

Method Detail

size

public int size()

Description copied from interface: SyntacticHeap

Get the number of items in the heap.

Specified by:

size in interface SyntacticHeap

Returns:

getSyntacticItem

public SyntacticItem getSyntacticItem(int index)

Description copied from interface: SyntacticHeap

Return the ith syntactic item in this heap. This may return null if the item in question has been garbage collected.

Specified by:

getSyntacticItem in interface SyntacticHeap

Returns:

getIndexOf

public int getIndexOf(SyntacticItem item)

Description copied from interface: SyntacticHeap

Determine the index of a given syntactic item in this heap.

Specified by:

getIndexOf in interface SyntacticHeap

Returns:

getSyntacticItems

public <T extends SyntacticItem> List<T> getSyntacticItems(Class<T> kind)

allocate

public <T extends SyntacticItem> T allocate(T item)

Description copied from interface: SyntacticHeap

Allocate a given syntactic item into this heap. The item must not already be allocated to another heap. This will recursively allocate children not already allocated to this heap. Observe that the item returned is the actual object allocated into this heap. One should not assume that the item given is that which is actually allocated.

This method will not permit mixed allocation items. That is, when it encounters an item already allocated to another heap it will simple throw an exception.

Specified by:

allocate in interface SyntacticHeap

Returns:

print

public void print(PrintWriter out)