1 /*
2 * Copyright 2014 - 2020 Rafael Winterhalter
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package net.bytebuddy.implementation.bind;
17
18 import net.bytebuddy.description.method.MethodDescription;
19
20 /**
21 * This {@link net.bytebuddy.implementation.bind.MethodDelegationBinder.AmbiguityResolver} selects
22 * the method with more arguments. If two methods have equally many arguments, the resolution is ambiguous.
23 */
24 public enum ParameterLengthResolver implements MethodDelegationBinder.AmbiguityResolver {
25
26 /**
27 * The singleton instance.
28 */
29 INSTANCE;
30
31 /**
32 * {@inheritDoc}
33 */
34 public Resolution resolve(MethodDescription source,
35 MethodDelegationBinder.MethodBinding left,
36 MethodDelegationBinder.MethodBinding right) {
37 int leftLength = left.getTarget().getParameters().size();
38 int rightLength = right.getTarget().getParameters().size();
39 if (leftLength == rightLength) {
40 return Resolution.AMBIGUOUS;
41 } else if (leftLength < rightLength) {
42 return Resolution.RIGHT;
43 } else {
44 return Resolution.LEFT;
45 }
46 }
47 }
48