subprojects/logic/src/main/java/tools/refinery/logic/term/int_/IntSumAggregator.java


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40

/*
 * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
 *
 * SPDX-License-Identifier: EPL-2.0
 */
package tools.refinery.logic.term.int_;

import tools.refinery.logic.term.StatelessAggregator;

public final class IntSumAggregator implements StatelessAggregator<Integer, Integer> {
	public static final IntSumAggregator INSTANCE = new IntSumAggregator();

	private IntSumAggregator() {
	}

	@Override
	public Class<Integer> getResultType() {
		return Integer.class;
	}

	@Override
	public Class<Integer> getInputType() {
		return Integer.class;
	}

	@Override
	public Integer getEmptyResult() {
		return 0;
	}

	@Override
	public Integer add(Integer current, Integer value) {
		return current + value;
	}

	@Override
	public Integer remove(Integer current, Integer value) {
		return current - value;
	}
}