CMaxIndex.java
- /*
- * @cond LICENSE
- * ######################################################################################
- * # LGPL License #
- * # #
- * # This file is part of the LightJason AgentSpeak(L++) #
- * # Copyright (c) 2015-19, LightJason (info@lightjason.org) #
- * # This program is free software: you can redistribute it and/or modify #
- * # it under the terms of the GNU Lesser General Public License as #
- * # published by the Free Software Foundation, either version 3 of the #
- * # License, or (at your option) any later version. #
- * # #
- * # This program is distributed in the hope that it will be useful, #
- * # but WITHOUT ANY WARRANTY; without even the implied warranty of #
- * # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
- * # GNU Lesser General Public License for more details. #
- * # #
- * # You should have received a copy of the GNU Lesser General Public License #
- * # along with this program. If not, see http://www.gnu.org/licenses/ #
- * ######################################################################################
- * @endcond
- */
- package org.lightjason.agentspeak.action.builtin.math;
- import org.lightjason.agentspeak.action.builtin.IBuiltinAction;
- import org.lightjason.agentspeak.error.CRuntimeException;
- import org.lightjason.agentspeak.language.CCommon;
- import org.lightjason.agentspeak.language.CRawTerm;
- import org.lightjason.agentspeak.language.ITerm;
- import org.lightjason.agentspeak.language.execution.IContext;
- import org.lightjason.agentspeak.language.fuzzy.CFuzzyValue;
- import org.lightjason.agentspeak.language.fuzzy.IFuzzyValue;
- import javax.annotation.Nonnegative;
- import javax.annotation.Nonnull;
- import java.util.List;
- import java.util.stream.Collectors;
- import java.util.stream.IntStream;
- /**
- * action for index of maximum.
- * The action takes of the given unflatten input the maximum and
- * returns the index within the unflatten argument list, the
- * action never fails
- *
- * {@code MaxIndex = math/maxindex( 5, 6, [7,8, [1,2,3]] );}
- */
- public final class CMaxIndex extends IBuiltinAction
- {
- /**
- * serial id
- */
- private static final long serialVersionUID = 3532214759609690631L;
- @Nonnegative
- @Override
- public final int minimalArgumentNumber()
- {
- return 1;
- }
- @Nonnull
- @Override
- public final IFuzzyValue<Boolean> execute( final boolean p_parallel, @Nonnull final IContext p_context,
- @Nonnull final List<ITerm> p_argument, @Nonnull final List<ITerm> p_return )
- {
- final List<Double> l_list = CCommon.flatten( p_argument )
- .map( ITerm::<Number>raw )
- .mapToDouble( Number::doubleValue )
- .boxed()
- .collect( Collectors.toList() );
- p_return.add(
- CRawTerm.from(
- (double) IntStream.range( 0, l_list.size() )
- .parallel()
- .reduce( ( i, j ) -> l_list.get( i ) < l_list.get( j ) ? j : i )
- .orElseThrow( () -> new CRuntimeException( p_context ) )
- )
- );
- return CFuzzyValue.from( true );
- }
- }