joshua.ui.tree_visualizer.Node Class Reference

Collaboration diagram for joshua.ui.tree_visualizer.Node:

List of all members.

Public Member Functions
	Node (String name, boolean isSource)
	Node (String name, Node parent, boolean isSource)
String	toString ()
void	setSourceSpan (int start, int end)
void	setSourceStart (int x)
void	setSourceEnd (int x)
boolean	isSource ()
int	sourceStart ()
int	sourceEnd ()
String	source (String src)
void	setCounterpart (Node n)
Node	getCounterpart ()
boolean	isHighlighted ()
void	setHighlighted (boolean b)
Static Public Attributes
static final String	DELIM = "[\\{\\}\\-]"
Private Attributes
String	name
int	sourceStart
int	sourceEnd
boolean	isSource
Node	counterpart = null
boolean	isHighlighted = false

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Detailed Description

A representation of a node in a derivation tree. The derivation tree class itself is parameterized in terms of this class and the DerivationEdge class. A Node may represent either a non-terminal symbol or one or more terminal symbols of the derivation.

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Constructor & Destructor Documentation

joshua.ui.tree_visualizer.Node.Node	(	String	name,
		boolean	isSource
	)

Constructor used for root nodes or nodes whose parent is not given.

Parameters:

name	a String that represents the symbols at this node
isSource	a boolean saying whether this is a source-side node

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joshua.ui.tree_visualizer.Node.Node	(	String	name,
		Node	parent,
		boolean	isSource
	)

Constructor for nodes whose parent is known.

Parameters:

name	a String that represents the symbols at this node
parent	the parent of this node
isSource	a boolean saying whether this is a source-side node

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Member Function Documentation

Node joshua.ui.tree_visualizer.Node.getCounterpart

(

)

Returns the node that represents that other-side node that has been aligned with this node.

Returns:

this node's counterpart

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boolean joshua.ui.tree_visualizer.Node.isHighlighted

(

)

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boolean joshua.ui.tree_visualizer.Node.isSource

(

)

Returns whether this node is part of a source-side or target-side derivation tree.

Returns:

true if the node is part of a source-side tree, false otherwise

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void joshua.ui.tree_visualizer.Node.setCounterpart

(

Node

n

)

Sets this node's counterpart to the given node.

void joshua.ui.tree_visualizer.Node.setHighlighted

(

boolean

b

)

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void joshua.ui.tree_visualizer.Node.setSourceEnd

(

int

x

)

Sets the index after the last source word that is aligned with this node.

Parameters:

x	the value to set

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void joshua.ui.tree_visualizer.Node.setSourceSpan	(	int	start,
		int	end
	)

Sets the indices of the source sentence that are aligned with this node.

Parameters:

start	the index of the first source word that is aligned
end	the index after the last source word that is aligned

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void joshua.ui.tree_visualizer.Node.setSourceStart

(

int

x

)

Sets the index of the first source word that is aligned with this node.

Parameters:

x	the value to set the index

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String joshua.ui.tree_visualizer.Node.source

(

String

src

)

Returns the complete source phrase that is aligned with this node. We join together all the source words from start to end using one space per join.

Parameters:

src	the source sentence

Returns:

a substring of the source sentence that is aligned with this node

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int joshua.ui.tree_visualizer.Node.sourceEnd

(

)

Returns an index into the source sentence that is one later than the last word that is aligned with this node.

Returns:

one plus the index of the last source word aligned with this node

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int joshua.ui.tree_visualizer.Node.sourceStart

(

)

Returns an index into the source sentence that is the first word aligned with this node.

Returns:

the index of the first source word aligned with this node

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String joshua.ui.tree_visualizer.Node.toString

(

)

Returns a string representation of this node. That is, it returns the name of a non-terminal, or terminals that have been joined with spaces.

Returns:

a String representation of this node

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Member Data Documentation

Node joshua.ui.tree_visualizer.Node.counterpart = null [private]

If this node is a node holding terminal symbols, a pointer to the node that represents symbols that have been aligned with it.

final String joshua.ui.tree_visualizer.Node.DELIM = "[\\{\\}\\-]" [static]

A regex used to extract source-side alignments from annotated non-terminals.

boolean joshua.ui.tree_visualizer.Node.isHighlighted = false [private]

A boolean to let the renderer know whether this vertex is highlighted.

boolean joshua.ui.tree_visualizer.Node.isSource [private]

Indicates whether this node is part of the source-side of target- side derivation tree.

String joshua.ui.tree_visualizer.Node.name [private]

The label to be shown on the node. If the node is a non-terminal symbol, it is the name of the symbol. Otherwise, it is terminal symbols joined with spaces.

int joshua.ui.tree_visualizer.Node.sourceEnd [private]

Index into the source sentence of the last word that is aligned with this node.

int joshua.ui.tree_visualizer.Node.sourceStart [private]

Index into the source sentence of the first word that is aligned with this node.