1 /*
2 * #%L
3 * prolobjectlink-jpi
4 * %%
5 * Copyright (C) 2019 Prolobjectlink Project
6 * %%
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 * #L%
25 */
26 package io.github.prolobjectlink.prolog;
27
28 import java.util.Set;
29
30 /**
31 * A collection that contains no duplicate Prolog operators. Extends from
32 * {@link Set} and add {@link #currentOp(String)} method to check if in the
33 * operator set is defined some particular operator specified by your string
34 * symbol.
35 *
36 * @author Jose Zalacain
37 * @since 1.0
38 */
39 public interface PrologOperatorSet extends Set<PrologOperator> {
40
41 /**
42 * Check if in the operator set is defined some particular operator specified by
43 * your string symbol. If the operator is defined in the operator set return
44 * true or false in other case.
45 *
46 * @param operator operator to be checked
47 * @return true if the operator is defined in the operator set or false in other
48 * case.
49 * @since 1.0
50 */
51 public boolean currentOp(String operator);
52
53 }