Package jflex.core

Class RegExps

java.lang.Object

jflex.core.RegExps

public class RegExps
extends Object

Stores all rules of the specification for later access in the RegExp to NFA conversion.

Version:

JFlex 1.8.1

Author:

Gerwin Klein

Constructor Summary

Constructors

Constructor	Description
RegExps()	Constructor for RegExps.

Method Summary

Modifier and Type	Method	Description
void	addStates(int regNum, List<Integer> newStates)	addStates.
void	checkActions()	checkActions.
void	checkLookAheads()	checkLookAheads.
void	dump()	Print the list of regExps to Out.dump
Action	getAction(int num)	getAction.
int	getLine(int num)	getLine.
RegExp	getLookAhead(int num)	getLookAhead.
int	getLookEntry(int num)	getLookEntry.
int	getNum()	getNum.
RegExp	getRegExp(int num)	getRegExp.
List<Integer>	getStates(int num)	Getter for the field states.
int	insert(int line, List<Integer> stateList, RegExp regExp, Action action, Boolean isBOL, RegExp lookAhead)	insert.
int	insert(List<Integer> stateList, Action action)	insert.
boolean	isBOL(int num)	isBOL.
boolean	isEOF(int num)	isEOF.
void	makeCCLs(CharClasses classes, boolean caseless)	Make character class partitions for all classes mentioned in the spec.
int	NFASize(Macros macros)	NFASize.
void	normalise(Macros m)	Normalise all character class expressions in regexp and lookahead rules.

Methods inherited from class java.lang.Object

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

Constructor Detail

RegExps

public RegExps()

Constructor for RegExps.

Method Detail

insert

public int insert(int line,
                  List<Integer> stateList,
                  RegExp regExp,
                  Action action,
                  Boolean isBOL,
                  RegExp lookAhead)

insert.

Parameters:

line - a int.

stateList - a List object.

regExp - a RegExp object.

action - a Action object.

isBOL - a Boolean object.

lookAhead - a RegExp object.

Returns:

a int.

insert

public int insert(List<Integer> stateList,
                  Action action)

insert.

Parameters:

stateList - a List object.

action - a Action object.

Returns:

a int.

addStates

public void addStates(int regNum,
                      List<Integer> newStates)

addStates.

Parameters:

regNum - a int.

newStates - a List object.

getNum

public int getNum()

getNum.

Returns:

a int.

isBOL

public boolean isBOL(int num)

isBOL.

Parameters:

num - a int.

Returns:

a boolean.

getLookAhead

public RegExp getLookAhead(int num)

getLookAhead.

Parameters:

num - a int.

Returns:

a RegExp object.

isEOF

public boolean isEOF(int num)

isEOF.

Parameters:

num - a int.

Returns:

a boolean.

getStates

public List<Integer> getStates(int num)

Getter for the field states.

Parameters:

num - a int.

Returns:

a List object.

getRegExp

public RegExp getRegExp(int num)

getRegExp.

Parameters:

num - a int.

Returns:

a RegExp object.

getLine

public int getLine(int num)

getLine.

Parameters:

num - a int.

Returns:

a int.

getLookEntry

public int getLookEntry(int num)

getLookEntry.

Parameters:

num - a int.

Returns:

a int.

checkActions

public void checkActions()

checkActions.

getAction

public Action getAction(int num)

getAction.

Parameters:

num - a int.

Returns:

a Action object.

NFASize

public int NFASize(Macros macros)

NFASize.

Parameters:

macros - a Macros object.

Returns:

a int.

checkLookAheads

public void checkLookAheads()

checkLookAheads.

normalise

public void normalise(Macros m)

Normalise all character class expressions in regexp and lookahead rules.

dump

public void dump()

Print the list of regExps to Out.dump

makeCCLs

public void makeCCLs(CharClasses classes,
                     boolean caseless)

Make character class partitions for all classes mentioned in the spec.

Assumes that single characters and strings have already been handled.

Assumes normalised expressions.