fr.umlv.tatoo.runtime.parser
Class ShiftAction<T,P,V>

java.lang.Object
  fr.umlv.tatoo.runtime.parser.Action<T,P,V>
      fr.umlv.tatoo.runtime.parser.ShiftAction<T,P,V>

Type Parameters:

T - type of terminals.

P - type of productions.

V - type of versions.

public class ShiftAction<T,P,V>
extends Action<T,P,V>

Shift action class.

Author:

Julien Cervelle

Constructor Summary

ShiftAction(int shift)
Constructs a shift action.

Method Summary

<N> ActionReturn	doPerform(Parser<T,N,P,V> parser, T terminal) Performs necessary computations required by the action.
boolean	isShift(V version) Indicates if the action is a shift.
String	toString()

Methods inherited from class fr.umlv.tatoo.runtime.parser.Action

isError

Methods inherited from class java.lang.Object

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

Constructor Detail

ShiftAction

public ShiftAction(int shift)

Constructs a shift action.

Parameters:

shift - state reached by this shift action.

Method Detail

doPerform

public <N> ActionReturn doPerform(Parser<T,N,P,V> parser,
                                  T terminal)

Description copied from class: Action

Performs necessary computations required by the action.

Specified by:

doPerform in class Action<T,P,V>

Type Parameters:

N - type of non-terminals.

Parameters:

parser - the parser object.

terminal - terminal on which the shift is performed.

Returns:

NEXT if action consumed terminal, and KEEP else.

isShift

public boolean isShift(V version)

Description copied from class: Action

Indicates if the action is a shift.

Overrides:

isShift in class Action<T,P,V>

Parameters:

version - version of the action to consider, see VersionedAction.

Returns:

true if the action is an shift.

toString

public String toString()

Overrides:

toString in class Object