org.antlr.analysis
Class NFA

java.lang.Object
  extended by org.antlr.analysis.NFA

public class NFA
extends java.lang.Object

An NFA (collection of NFAStates) constructed from a grammar. This NFA is one big machine for entire grammar. Decision points are recorded by the Grammar object so we can, for example, convert to DFA or simulate the NFA (interpret a decision).


Field Summary
 boolean complete
           
protected  NFAFactory factory
          Which factory created this NFA?
 Grammar grammar
          This NFA represents which grammar?
static int INVALID_ALT_NUMBER
           
 
Constructor Summary
NFA(Grammar g)
           
 
Method Summary
 void addState(NFAState state)
           
 NFAFactory getFactory()
           
 int getNewNFAStateNumber()
           
 NFAState getState(int s)
           
 void setFactory(NFAFactory factory)
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

INVALID_ALT_NUMBER

public static final int INVALID_ALT_NUMBER
See Also:
Constant Field Values

grammar

public Grammar grammar
This NFA represents which grammar?


factory

protected NFAFactory factory
Which factory created this NFA?


complete

public boolean complete
Constructor Detail

NFA

public NFA(Grammar g)
Method Detail

getNewNFAStateNumber

public int getNewNFAStateNumber()

addState

public void addState(NFAState state)

getState

public NFAState getState(int s)

getFactory

public NFAFactory getFactory()

setFactory

public void setFactory(NFAFactory factory)


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