org.stekikun.dolmen.automaton

Class DFA.TagAction

java.lang.Object

org.stekikun.dolmen.automaton.DFA.TagAction

Enclosing class:

DFA

public static final class DFA.TagAction
extends Object

Describes a tag action, i.e. commands which are performed as part of the finisher set corresponding to some final action. There are two kinds of tag actions:

• SetTag(n, m) which describes setting the value of tag n from the contents of memory cell m
• EraseTag(n) which describes setting the value of tag n to -1, i.e. the conventional uninitialized tag value.

Author:

Stéphane Lescuyer

Field Summary

Fields

Modifier and Type	Field and Description
int	from The cell to copy from, if >= 0
int	tag The memory cell to act on

Method Summary

Modifier and Type	Method and Description
static DFA.TagAction	EraseTag(int tag)
static DFA.TagAction	SetTag(int tag, int from)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

tag

public final int tag

The memory cell to act on

from

public final int from

The cell to copy from, if >= 0

Method Detail

toString

public String toString()

Overrides:

toString in class Object

SetTag

public static DFA.TagAction SetTag(int tag,
                                   int from)

Parameters:

tag -

from -

Returns:

the tag action setting tag from the specified memory cell

EraseTag

public static DFA.TagAction EraseTag(int tag)

Parameters:

tag -

Returns:

the tag action erasing tag