org.snt.inmemantlr.tree

Class AstNode

java.lang.Object

org.snt.inmemantlr.tree.AstNode

public class AstNode
extends Object

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AstNode(Ast tree, AstNode nod) deep copy constructor
protected	AstNode(Ast tree, AstNode parent, String nt, String label) constructor

Method Summary

Modifier and Type	Method and Description
void	addChild(AstNode n) append child node
void	delChild(AstNode n) delete child node
boolean	equals(Object o)
AstNode	getChild(int i) get child with index i
List<AstNode>	getChildren() get List of children
String	getEscapedLabel() get label where special chars are escaped
AstNode	getFirstChild() get first child (note that nodes are ordered in their appearance)
int	getId() gt identifier
String	getLabel() get label
AstNode	getLastChild() get last child (note that nodes are ordered in their appearance)
AstNode	getParent() get parent node
String	getRule() get non-terminal rule of that node
boolean	hasChildren() check if node has children
int	hashCode()
boolean	hasParent() check if node has parent
boolean	isLeaf() check whether this node is a leaf node
void	replaceChild(AstNode oldNode, AstNode newNode) replace child
void	setParent(AstNode par) set parent node
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

AstNode

protected AstNode(Ast tree,
                  AstNode parent,
                  String nt,
                  String label)

constructor

Parameters:

tree - tree to whom the node belongs to

parent - parent node

nt - non terminal id

label - label

AstNode

protected AstNode(Ast tree,
                  AstNode nod)

deep copy constructor

Parameters:

tree - tree to whom the node belongs to

nod - node to duplication

Method Detail

getChild

public AstNode getChild(int i)

get child with index i

Parameters:

i - the index of the child

Returns:

child with index i

getLastChild

public AstNode getLastChild()

get last child (note that nodes are ordered in their appearance)

Returns:

last child

getFirstChild

public AstNode getFirstChild()

get first child (note that nodes are ordered in their appearance)

Returns:

first child

setParent

public void setParent(AstNode par)

set parent node

Parameters:

par - parent node

hasParent

public boolean hasParent()

check if node has parent

Returns:

true if node has parent, false otherwise

getParent

public AstNode getParent()

get parent node

Returns:

parent node

hasChildren

public boolean hasChildren()

check if node has children

Returns:

true if node has children, false otherwise

getChildren

public List<AstNode> getChildren()

get List of children

Returns:

list of children

addChild

public void addChild(AstNode n)

append child node

Parameters:

n - child node to be added

delChild

public void delChild(AstNode n)

delete child node

Parameters:

n - child node to be deleted

replaceChild

public void replaceChild(AstNode oldNode,
                         AstNode newNode)

replace child

Parameters:

oldNode - child to be replaced

newNode - replacement

getId

public int getId()

gt identifier

Returns:

id which identifies node uniquely

getRule

public String getRule()

get non-terminal rule of that node

Returns:

non-terminal rule

getEscapedLabel

public String getEscapedLabel()

get label where special chars are escaped

Returns:

escaped label

getLabel

public String getLabel()

get label

Returns:

unescaped label

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

isLeaf

public boolean isLeaf()

check whether this node is a leaf node

Returns:

true if node has no children, false otherwise