polyglot.visit
Class TypeBuilder

java.lang.Object
  polyglot.visit.NodeVisitor
      polyglot.visit.HaltingVisitor
          polyglot.visit.TypeBuilder

All Implemented Interfaces:

java.lang.Cloneable, Copy

public class TypeBuilder
extends HaltingVisitor

Visitor which traverses the AST constructing type objects.

Field Summary

protected boolean	global
protected ImportTable	importTable
protected boolean	inCode
protected Job	job
protected NodeFactory	nf
protected TypeBuilder	outer
protected TypeSystem	ts
protected ParsedClassType	type

Constructor Summary

TypeBuilder(Job job, TypeSystem ts, NodeFactory nf)

Method Summary

NodeVisitor	begin() The begin method is called before the entire tree is visited.
ParsedClassType	currentClass()
Package	currentPackage()
NodeVisitor	enter(Node n) Begin normal traversal of a subtree rooted at n.
ErrorQueue	errorQueue()
ImportTable	importTable()
Job	job()
Node	leave(Node old, Node n, NodeVisitor v) This method is called after all of the children of n have been visited.
protected ParsedClassType	newClass(Position pos, Flags flags, java.lang.String name)
NodeFactory	nodeFactory()
TypeBuilder	pop()
TypeBuilder	push()
TypeBuilder	pushAnonClass(Position pos)
protected TypeBuilder	pushClass(ParsedClassType type)
TypeBuilder	pushClass(Position pos, Flags flags, java.lang.String name)
TypeBuilder	pushCode()
void	setImportTable(ImportTable it)
java.lang.String	toString()
TypeSystem	typeSystem()

Methods inherited from class polyglot.visit.HaltingVisitor

bypass, bypass, bypassChildren, copy, override, visitChildren

Methods inherited from class polyglot.visit.NodeVisitor

enter, finish, finish, leave, override, visitEdge

Methods inherited from class java.lang.Object

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

Field Detail

importTable

protected ImportTable importTable

job

protected Job job

ts

protected TypeSystem ts

nf

protected NodeFactory nf

outer

protected TypeBuilder outer

inCode

protected boolean inCode

global

protected boolean global

type

protected ParsedClassType type

Constructor Detail

TypeBuilder

public TypeBuilder(Job job,
                   TypeSystem ts,
                   NodeFactory nf)

Method Detail

push

public TypeBuilder push()

pop

public TypeBuilder pop()

job

public Job job()

errorQueue

public ErrorQueue errorQueue()

nodeFactory

public NodeFactory nodeFactory()

typeSystem

public TypeSystem typeSystem()

begin

public NodeVisitor begin()

Description copied from class: NodeVisitor

The begin method is called before the entire tree is visited. This method allows the visitor to perform any initialization that cannot be done when the visitor is created. If null is returned, the ast is not traversed.

Overrides:

begin in class NodeVisitor

Returns:

the NodeVisitor to traverse the ast with. If null is returned, the ast is not traversed.

enter

public NodeVisitor enter(Node n)

Description copied from class: NodeVisitor

Begin normal traversal of a subtree rooted at n. This gives the visitor the option of changing internal state or returning a new visitor which will be used to visit the children of n.

This method is typically called by the method enter(parent, n). If a subclass overrides the method enter(parent, n) then this method may not be called.

Overrides:

enter in class NodeVisitor

Parameters:

n - The root of the subtree to be traversed.

Returns:

The NodeVisitor which should be used to visit the children of n.

leave

public Node leave(Node old,
                  Node n,
                  NodeVisitor v)

Description copied from class: NodeVisitor

This method is called after all of the children of n have been visited. In this case, these children were visited by the visitor v. This is the last chance for the visitor to modify the tree rooted at n. This method will be called exactly the same number of times as entry is called. That is, for each node that is not overriden, enter and leave are each called exactly once.

Note that if old == n then the vistior should make a copy of n before modifying it. It should then return the modified copy.

This method is typically called by the method leave(parent, old, n v). If a subclass overrides the method leave(parent, old, n v) then this method may not be called.

Overrides:

leave in class NodeVisitor

Parameters:

old - The original state of root of the current subtree.

n - The current state of the root of the current subtree.

v - The NodeVisitor object used to visit the children.

Returns:

The final result of the traversal of the tree rooted at n.

pushCode

public TypeBuilder pushCode()

pushClass

protected TypeBuilder pushClass(ParsedClassType type)
                         throws SemanticException

Throws:

SemanticException

newClass

protected ParsedClassType newClass(Position pos,
                                   Flags flags,
                                   java.lang.String name)
                            throws SemanticException

Throws:

SemanticException

pushAnonClass

public TypeBuilder pushAnonClass(Position pos)
                          throws SemanticException

Throws:

SemanticException

pushClass

public TypeBuilder pushClass(Position pos,
                             Flags flags,
                             java.lang.String name)
                      throws SemanticException

Throws:

SemanticException

currentClass

public ParsedClassType currentClass()

currentPackage

public Package currentPackage()

importTable

public ImportTable importTable()

setImportTable

public void setImportTable(ImportTable it)

toString

public java.lang.String toString()

Overrides:

toString in class NodeVisitor