LightJason - AgentSpeak(L++)
CIsEmpty.java
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1 /*
2  * @cond LICENSE
3  * ######################################################################################
4  * # LGPL License #
5  * # #
6  * # This file is part of the LightJason AgentSpeak(L++) #
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8  * # This program is free software: you can redistribute it and/or modify #
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16  * # GNU Lesser General Public License for more details. #
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22  */
23 
24 package org.lightjason.agentspeak.action.builtin.collection;
25 
26 import com.google.common.collect.Multimap;
34 
35 import javax.annotation.Nonnegative;
36 import javax.annotation.Nonnull;
37 import java.util.Collection;
38 import java.util.List;
39 import java.util.Map;
40 
41 
50 public final class CIsEmpty extends IBuiltinAction
51 {
55  private static final long serialVersionUID = -3479069391247895544L;
56 
57  @Nonnegative
58  @Override
59  public final int minimalArgumentNumber()
60  {
61  return 1;
62  }
63 
64  @Nonnull
65  @Override
66  public final IFuzzyValue<Boolean> execute( final boolean p_parallel, @Nonnull final IContext p_context,
67  @Nonnull final List<ITerm> p_argument, @Nonnull final List<ITerm> p_return
68  )
69  {
70  p_argument.stream()
71  .map( CIsEmpty::empty )
72  .map( CRawTerm::from )
73  .forEach( p_return::add );
74 
75  return CFuzzyValue.from( true );
76  }
77 
78 
85  private static boolean empty( @Nonnull final ITerm p_term )
86  {
87  if ( CCommon.rawvalueAssignableTo( p_term, Collection.class ) )
88  return p_term.<Collection<?>>raw().isEmpty();
89 
90  if ( CCommon.rawvalueAssignableTo( p_term, Map.class ) )
91  return p_term.<Map<?, ?>>raw().isEmpty();
92 
93  return CCommon.rawvalueAssignableTo( p_term, Multimap.class ) && p_term.<Multimap<?, ?>>raw().isEmpty();
94 
95  }
96 
97 }
base class of build-in actions for setting name by package/classname (without prefix character) ...
static< N > IFuzzyValue< N > from( @Nonnull final N p_value)
factory
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)
defines a plan-body operation
Definition: CIsEmpty.java:66
common structure for execution definition
final int minimalArgumentNumber()
minimum number of arguments
Definition: CIsEmpty.java:59
execution context with local data
Definition: IContext.java:42
static< T > boolean rawvalueAssignableTo( @Nonnull final T p_value, @Nonnull final Class<?>... p_class)
checks a term value for assignable class
result for an immutable fuzzy value
static< N > CRawTerm< N > from(final N p_value)
factory for a raw term
Definition: CRawTerm.java:104
static boolean empty( @Nonnull final ITerm p_term)
checks a collection is empty
Definition: CIsEmpty.java:85
term structure for simple datatypes
Definition: CRawTerm.java:45