lolo.scans
Class SetMN

java.lang.Object
  |
  +--lolo.Scan
        |
        +--lolo.scans.Scan
              |
              +--lolo.scans.Set
                    |
                    +--lolo.scans.SetMN

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

Int

public class SetMN

extends Set

A recognizer class to scan for many characters from a set of characters.

Author:

Bernd Kühl (bernd@informatik.uni-osnabrueck.de)

See Also:

Serialized Form

Inner classes inherited from class lolo.Scan

Scan.Action, Scan.State

Field Summary

protected int	jog Counts the current number of recognized characters.
protected int	m The lower limit.
protected int	n The upper limit.

Fields inherited from class lolo.scans.Set

inside, set

Fields inherited from class lolo.scans.Scan

reset, stateObject

Fields inherited from class lolo.Scan

action, ignore

Constructor Summary

SetMN(java.lang.String set, boolean inside, int m, int n)
Constructs a recognizer which scans at least m and at most n characters.

Method Summary

boolean	equals(java.lang.Object o) Indicates whether some other object is "equal to" this one.
int	hashCode() Returns a hash code value for this object.
Scan.State	nextChar(char ch) Called by a Scanner for every new character.
void	reset() Resets this instance.
java.lang.String	toString() Returns a string representation of the object.

Methods inherited from class lolo.Scan

action, getAction, getIgnore, setAction, setIgnore

Methods inherited from class java.lang.Object

, clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

m

protected final int m

The lower limit.

n

protected final int n

The upper limit.

jog

protected transient int jog

Counts the current number of recognized characters.

Constructor Detail

SetMN

public SetMN(java.lang.String set,
             boolean inside,
             int m,
             int n)
      throws java.lang.IllegalArgumentException

Constructs a recognizer which scans at least m and at most n characters. If inside is true the characters have to be inside set, else they have to be oustide of set.

Parameters:

set - the set of characters.

inside - marks if the symbol characters have to be inside or outside set.

m - the minimal number of characters.

n - the maximum number of characters.

Method Detail

reset

public void reset()

Description copied from class: Scan

Resets this instance.

Overrides:

reset in class Set

nextChar

public Scan.State nextChar(char ch)

Description copied from class: Scan

Called by a Scanner for every new character.

Overrides:

nextChar in class Set

Following copied from class: lolo.Scan

Returns:

a State object to signal whether more characters are wanted and whether a symbol is found.

See Also:

Scan.State, Scanner

equals

public boolean equals(java.lang.Object o)

Indicates whether some other object is "equal to" this one.

Overrides:

equals in class Set

Returns:

whether some other object is "equal to" this one.

hashCode

public int hashCode()

Returns a hash code value for this object.

Overrides:

hashCode in class Set

Returns:

a hash code value for this object.

toString

public java.lang.String toString()

Returns a string representation of the object.

Overrides:

toString in class Set

Returns:

a string representation of the object.