Class ParseTree

java.lang.Object

ParseTree

public class ParseTree
extends Object

Represents a parse tree node for YaLCC. It can be a leaf or an internal node with children. Each node has a label (Symbol) and a rule number.

Field Summary

Fields

Modifier and Type	Field	Description
private final List<ParseTree>	children	The list of child nodes
private final Symbol	label	The label symbol for this node
private int	ruleNumber	The rule number used to create this node

Constructor Summary

Constructors

Constructor	Description
ParseTree(Symbol lbl)	Creates a leaf node with a given symbol.
ParseTree(Symbol lbl, List<ParseTree> chdn, int ruleNum)	Creates a node with a symbol, a list of children and a rule number.

Method Summary

Modifier and Type	Method	Description
void	addChild(ParseTree child)	Adds a child node to this node.
List<ParseTree>	getChildren()	Returns the list of child nodes
Symbol	getLabel()	Returns the label symbol
int	getRuleNumber()	Returns the rule number
void	setRuleNumber(int ruleNumber)	Sets the rule number
String	toForestPicture()	Writes the tree as a forest picture.
String	toLaTeX()	Writes the tree as a LaTeX document which can be compiled using PDFLaTeX.
String	toLaTexTree()	Writes the tree in LaTeX forest format.
String	toTikZ()	Writes the tree as TikZ code.
String	toTikZPicture()	Writes the tree as a TikZ picture.

Methods inherited from class java.lang.Object

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

Field Details

label

private final Symbol label

The label symbol for this node

children

private final List<ParseTree> children

The list of child nodes

ruleNumber

private int ruleNumber

The rule number used to create this node

Constructor Details

ParseTree

public ParseTree(Symbol lbl)

Creates a leaf node with a given symbol. This node has no children, and rule number is set to -1.

Parameters:

lbl - the symbol labeling this node

ParseTree

public ParseTree(Symbol lbl,
 List<ParseTree> chdn,
 int ruleNum)

Creates a node with a symbol, a list of children and a rule number.

Parameters:

lbl - the symbol labeling this node

chdn - the list of child nodes

ruleNum - the rule number used to create this node

Method Details

addChild

public void addChild(ParseTree child)

Adds a child node to this node.

Parameters:

child - the child node to add

getChildren

public List<ParseTree> getChildren()

Returns the list of child nodes

Returns:

the list of child nodes

getRuleNumber

public int getRuleNumber()

Returns the rule number

Returns:

the rule number

setRuleNumber

public void setRuleNumber(int ruleNumber)

Sets the rule number

Parameters:

ruleNumber - the rule number to set

getLabel

public Symbol getLabel()

Returns the label symbol

Returns:

the label symbol

toLaTexTree

public String toLaTexTree()

Writes the tree in LaTeX forest format.

Returns:

the tree in LaTeX forest format

toTikZ

public String toTikZ()

Writes the tree as TikZ code.

Returns:

the tree as TikZ code

toTikZPicture

public String toTikZPicture()

Writes the tree as a TikZ picture. TiKz picture can be used in LaTeX documents.

Returns:

the tree as a TikZ picture

toForestPicture

public String toForestPicture()

Writes the tree as a forest picture. Returns the tree in forest enviroment using the latex code of the tree

Returns:

the tree as a forest picture

toLaTeX

public String toLaTeX()

Writes the tree as a LaTeX document which can be compiled using PDFLaTeX.

The result can be used with the command:

 pdflatex some-file.tex
 

Returns:

the tree as a LaTeX document