coins.sym
Class SymNestIteratorImpl

java.lang.Object
  coins.sym.SymNestIteratorImpl

All Implemented Interfaces:

SymNestIterator

public class SymNestIteratorImpl

extends java.lang.Object

implements SymNestIterator

SymNestIteratorImpl class

Field Summary

protected int	fStackDepth
protected Sym	fSymNext
protected java.util.ArrayList	fSymTableStack

Constructor Summary

SymNestIteratorImpl(SymTable pSymTable)

Method Summary

boolean	hasNext() hasNext True if there are symbols remaining in the specified symbol table or its children, false otherwise.
Sym	next() next Get next symbol in the specified symbol table and its children.
Var	nextVar() nextVar Get the next symbol in the specified symbol table and its children skipping symbols that are not a Var symbol.

Methods inherited from class java.lang.Object

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

Field Detail

fStackDepth

protected int fStackDepth

fSymTableStack

protected java.util.ArrayList fSymTableStack

fSymNext

protected Sym fSymNext

Constructor Detail

SymNestIteratorImpl

public SymNestIteratorImpl(SymTable pSymTable)

Method Detail

next

public Sym next()

Description copied from interface: SymNestIterator

next Get next symbol in the specified symbol table and its children. If all symbols are traversed in the specified symbol table, then symbols in the first child symbol table and then its brothers are traversed, that is, traversing in the order: this, 1st child of this, 1st child of 1st child of this, ... 2nd child of 1st child of this, ... ... 2nd child of this, 1st child of 2nd child of this, ... ... ... recursively.

Specified by:

next in interface SymNestIterator

nextVar

public Var nextVar()

Description copied from interface: SymNestIterator

nextVar Get the next symbol in the specified symbol table and its children skipping symbols that are not a Var symbol. If the last symbol is not a variable, then null will be returned as the last symbol.

Specified by:

nextVar in interface SymNestIterator

hasNext

public boolean hasNext()

Description copied from interface: SymNestIterator

hasNext True if there are symbols remaining in the specified symbol table or its children, false otherwise.

Specified by:

hasNext in interface SymNestIterator