org.stekikun.dolmen.automaton

Class DFA.MemAction

java.lang.Object

org.stekikun.dolmen.automaton.DFA.MemAction

Direct Known Subclasses:

DFA.MemAction.Copy, DFA.MemAction.Set

Enclosing class:

DFA

public abstract static class DFA.MemAction
extends Object

Action on memory cells to take when following a DFA transition

Actions are of two kinds: either setting some memory cell to the current position input, or copying one memory cell's contents into another.

Author:

Stéphane Lescuyer

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DFA.MemAction.Copy Represents a memory action where some memory cell DFA.MemAction.Copy.src must be copied into another cell DFA.MemAction.Copy.dst
static class	DFA.MemAction.Set Represents a memory action where some memory cell DFA.MemAction.Set.dst must be set to the current position input

Method Summary

Modifier and Type	Method and Description
static DFA.MemAction.Copy	copy(int src, int dst)
abstract int	getDest()
abstract int	getSrc()
static DFA.MemAction.Set	set(int dst)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

getDest

public abstract int getDest()

Returns:

the destination of this memory action

getSrc

public abstract int getSrc()

Returns:

the source of this memory action, or -1 if it is a set action and not a copy

toString

public final String toString()

Overrides:

toString in class Object

set

public static DFA.MemAction.Set set(int dst)

Parameters:

dst -

Returns:

the memory action which sets the memory cell dst

copy

public static DFA.MemAction.Copy copy(int src,
                                      int dst)

Parameters:

src -

dst -

Returns:

the memory action which copies the contents of src to memory cell dst