dk.brics.grammar.ast
Class Node

java.lang.Object
  dk.brics.grammar.ast.Node

Direct Known Subclasses:

BranchNode, LeafNode

public abstract class Node
extends Object

Superclass of AST nodes.

Constructor Summary

protected

Node(int i, int j) Constructs a new node.

Method Summary

int	getFromIndex() Returns index in original string corresponding to the start of this node.
String	getString(String x) Returns the substring represented by this node.
int	getToIndex() Returns index in original string corresponding to the end (exclusive) of this node.
abstract void	print(String x, StringBuilder b) Prints this node.
abstract void	visitBy(NodeVisitor v) Visits this node.

Methods inherited from class java.lang.Object

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

Constructor Detail

Node

protected Node(int i,
               int j)

Constructs a new node.

Parameters:

i - from index

j - to index

Method Detail

getFromIndex

public int getFromIndex()

Returns index in original string corresponding to the start of this node.

Returns:

index

getString

public String getString(String x)

Returns the substring represented by this node.

Parameters:

x - original string

Returns:

substring

getToIndex

public int getToIndex()

Returns index in original string corresponding to the end (exclusive) of this node.

Returns:

index

print

public abstract void print(String x,
                           StringBuilder b)

Prints this node.

Parameters:

x - original string

b - string buffer for output

visitBy

public abstract void visitBy(NodeVisitor v)

Visits this node.

Parameters:

v - visitor