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1   /*
2    * #%L
3    * prolobjectlink-jpi-jpl7
4    * %%
5    * Copyright (C) 2019 Prolobjectlink Project
6    * %%
7    * Redistribution and use in source and binary forms, with or without
8    * modification, are permitted provided that the following conditions are met:
9    * 
10   * 1. Redistributions of source code must retain the above copyright notice,
11   *    this list of conditions and the following disclaimer.
12   * 2. Redistributions in binary form must reproduce the above copyright notice,
13   *    this list of conditions and the following disclaimer in the documentation
14   *    and/or other materials provided with the distribution.
15   * 
16   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19   * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
20   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26   * POSSIBILITY OF SUCH DAMAGE.
27   * #L%
28   */
29  package io.github.prolobjectlink.prolog.jpl7;
30  
31  import static io.github.prolobjectlink.prolog.PrologTermType.NIL_TYPE;
32  
33  import org.jpl7.Atom;
34  
35  import io.github.prolobjectlink.prolog.PrologProvider;
36  import io.github.prolobjectlink.prolog.PrologTerm;
37  
38  /**
39   * 
40   * @author Jose Zalacain
41   * @since 1.0
42   */
43  final class JplNil extends JplTerm implements PrologTerm {
44  
45  	JplNil(PrologProvider provider) {
46  		super(NIL_TYPE, provider, new Atom("nil"));
47  	}
48  
49  	public PrologTerm[] getArguments() {
50  		return new PrologTerm[0];
51  	}
52  
53  	public int getArity() {
54  		return 0;
55  	}
56  
57  	public String getFunctor() {
58  		return "" + value + "";
59  	}
60  
61  }