tom.library.sl
Class OneId

java.lang.Object
  tom.library.sl.AbstractStrategy
      tom.library.sl.OneId

All Implemented Interfaces:

Strategy, Visitable

public class OneId
extends AbstractStrategy

T(t1,...,ti,...,tN).accept(OneId(v)) = T(t1,...,ti.accept(v),...,tN) if ti is the first child that is modified.

Basic visitor combinator with one visitor argument, that applies this visitor to exactly one child. If no children are visited successfully, then OneId(v) fails.

Note that side-effects of failing visits to children are not undone.

Field Summary

static int

ARG

Fields inherited from class tom.library.sl.AbstractStrategy

environment, visitors

Constructor Summary

OneId(Strategy v)

Method Summary

int	visit() Visits the current subject (found in the environment) and place its result in the environment.
Visitable	visitLight(Visitable any) Visits the subject any in a light way (without environment)

Methods inherited from class tom.library.sl.AbstractStrategy

accept, getChildAt, getChildCount, getChildren, getEnvironment, getRoot, getSubject, init, init, initSubterm, initSubterm, initSubterm, initSubterm, initSubterm, setChildAt, setChildren, setEnvironment, setRoot, setSubject, visit, visit

Methods inherited from class java.lang.Object

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

Field Detail

ARG

public static final int ARG

See Also:

Constant Field Values

Constructor Detail

OneId

public OneId(Strategy v)

Method Detail

visitLight

public Visitable visitLight(Visitable any)
                     throws VisitFailure

Description copied from interface: Strategy

Visits the subject any in a light way (without environment)

Parameters:

any - the subject to visit.

Throws:

VisitFailure - in case of failure.

visit

public int visit()

Visits the current subject (found in the environment) and place its result in the environment. Sets the environment flag to Environment.FAILURE in case of failure