AdderInstanceReference.java

/*
 * Copyright 2023 Terminal Utils Authors
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package net.morimekta.terminal.args.reference;

import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collection;

/**
 * Adder reference that adds values directly to an existing collection instance.
 */
public class AdderInstanceReference implements AdderReference {
    private final String             name;
    private final Class<?>           itemType;
    private final Collection<Object> collection;
    private final Reference          annotationRef;

    public AdderInstanceReference(
            String name,
            Class<?> itemType,
            Collection<Object> collection,
            Reference annotationRef) {
        this.name = name;
        this.itemType = itemType;
        this.collection = collection;
        this.annotationRef = annotationRef;
    }

    @Override
    public Class<?> getItemType() {
        return itemType;
    }

    @Override
    public void add(Object o) {
        collection.add(o);
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public String getUsage() {
        return "Add value to " + getName() + ".";
    }

    @Override
    public Object get() {
        return collection;
    }

    @Override
    public boolean isAnnotationPresent(Class<? extends Annotation> annotation) {
        return annotationRef.isAnnotationPresent(annotation);
    }

    @Override
    public <A extends Annotation> A getAnnotation(Class<A> annotation) {
        return annotationRef.getAnnotation(annotation);
    }

    @Override
    public Class<?> getType() {
        return collection.getClass();
    }

    @Override
    public Type getGenericType() {
        return new ReferenceParameterizedType(collection.getClass(), itemType);
    }
}