JFlex
Class NFA
public final class NFA
extends java.lang.Object
NFA representation in JFlex.
Contains algorithms RegExp -> NFA and NFA -> DFA.
NFA
public NFA(int numInput,
int estSize)
addEpsilonTransition
public void addEpsilonTransition(int start,
int dest)
addRegExp
public void addRegExp(int regExpNum)
addStandaloneRule
public void addStandaloneRule()
addTransition
public void addTransition(int start,
int input,
int dest)
dotFormat
public String dotFormat()
dumpTable
public void dumpTable()
getDFA
public DFA getDFA()
Returns an DFA that accepts the same language as this NFA.
This DFA is usualy not minimal.
insertNFA
public IntPair insertNFA(RegExp regExp)
Constructs an NFA for regExp such that the NFA has
exactly one start state,
exactly one end state,
no transitions leading out of the end state
no transitions leading into the start state
regExp
- the regular expression to construct the
NFA for
- a pair of integers denoting the index of start
and end state of the NFA.
toString
public String toString()
writeDot
public void writeDot(File file)