All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class lib.Node 

java.lang.Object
   |
   +----lib.Node
public class Node
extends Object
The class Node is used to represent the syntex tree. Every node consists of an ID, a type, a list of children, a reference to its parent and some further data corresponding to its type. The types a node can have are defined in class Types.

Variable Index

o access
how to access a variable or method
o children
the children of the node are stored here
o classNode
pointer to the associated ClassNode
o data
any data to be stored in the node
o decl
a reference to the declaration
o etype
if this node is part of an expression, the type is store here
o id
the node's ID
o limitLocals
the number of local variables in a method; only valid for T_METHDEC nodes
o limitStack
the maximum number of stack cells needed while executing the method; only valid for T_METHDEC nodes
o lineNo
line number in source program
o nextID
next usable free ID
o offset
address of local variable relative to stack frame
o parent
the parent
o type
the type of the node as defines in Types

Constructor Index

o Node(int)
The constructor creates a new instance of the object Node of type type and initializes some fields.
o Node(int, int)
The constructor creates a new instance of the object Node of type type and initializes some fields.
o Node(int, Object)
The constructor creates a new instance of the object Node of type type and initializes some fields, especially the data-member is set to data.
o Node(int, Object, int)
The constructor creates a new instance of the object Node of type type and initializes some fields, especially the data-member is set to data.

Method Index

o addEdge(Node)
This method adds an edge from this node to dest.
o getChild(int)
Returns idxth child of the node.
o getChildren()
Returns an enumeration for the children.
o getChildrenCount()
Returns the number of children.
o getID()
Returns the unique ID of the node.

Variables

o nextID 
 protected static int nextID
next usable free ID

o id 
 protected int id
the node's ID

o children 
 protected Vector children
the children of the node are stored here

o parent 
 public Node parent
the parent

o classNode 
 public ClassNode classNode
pointer to the associated ClassNode

o data 
 public Object data
any data to be stored in the node

o type 
 public int type
the type of the node as defines in Types

o offset 
 public int offset
address of local variable relative to stack frame

o access 
 public int access
how to access a variable or method

o decl 
 public Node decl
a reference to the declaration

o etype 
 public String etype
if this node is part of an expression, the type is store here

o lineNo 
 public int lineNo
line number in source program

o limitLocals 
 public int limitLocals
the number of local variables in a method; only valid for T_METHDEC nodes

o limitStack 
 public int limitStack
the maximum number of stack cells needed while executing the method; only valid for T_METHDEC nodes

Constructors

o Node 
 public Node(int type)
The constructor creates a new instance of the object Node of type type and initializes some fields.

Parameters:
type - the type of the node
o Node 
 public Node(int type,
             int lineNo)
The constructor creates a new instance of the object Node of type type and initializes some fields.

Parameters:
type - the type of the node
lineNo - line number associated with this node
o Node 
 public Node(int type,
             Object data)
The constructor creates a new instance of the object Node of type type and initializes some fields, especially the data-member is set to data.

Parameters:
type - the type of the node
data - the object to be stored in the node's data-member
o Node 
 public Node(int type,
             Object data,
             int lineNo)
The constructor creates a new instance of the object Node of type type and initializes some fields, especially the data-member is set to data.

Parameters:
type - the type of the node
data - the object to be stored in the node's data-member
lineNo - line number associated with this node

Methods

o addEdge 
 public int addEdge(Node dest)
This method adds an edge from this node to dest. NOTE: The order in which the edges are added is significant.

Parameters:
dest - the destination node the edge leads to
Returns:
the index of the edge/child, or -1 if an error occured
o getID 
 public int getID()
Returns the unique ID of the node.

Returns:
the node's ID
o getChildrenCount 
 public int getChildrenCount()
Returns the number of children.

Returns:
number of children
o getChild 
 public Node getChild(int idx)
Returns idxth child of the node.

Parameters:
idx - index in children list
Returns:
the desired child
o getChildren 
 public Enumeration getChildren()
Returns an enumeration for the children.

Returns:
an Enumeration object 
All Packages  Class Hierarchy  This Package  Previous  Next  Index