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/*
 * Copyright 2017-2020 original authors
 *
 * Licensed 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
 *
 * https://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 io.micronaut.inject.annotation.internal;

import io.micronaut.core.annotation.AnnotationUtil;
import io.micronaut.core.annotation.AnnotationValue;
import io.micronaut.core.annotation.Internal;
import io.micronaut.core.naming.NameUtils;
import io.micronaut.inject.annotation.AnnotationRemapper;
import io.micronaut.inject.visitor.VisitorContext;

import io.micronaut.core.annotation.NonNull;
import java.util.Collections;
import java.util.List;

/**
 * A remapper that remaps findbugs annotations to javax.annotation which are represented internally.
 *
 * @author graemerocher
 * @since 1.2.0
 */
@Internal
public final class FindBugsRemapper implements AnnotationRemapper {

    @Override
    @NonNull public String getPackageName() {
        return "edu.umd.cs.findbugs.annotations";
    }

    @Override
    @NonNull public List> remap(AnnotationValue annotation, VisitorContext visitorContext) {
        String simpleName = NameUtils.getSimpleName(annotation.getAnnotationName());
        if ("nullable".equalsIgnoreCase(simpleName)) {
            return Collections.singletonList(
                    AnnotationValue.builder(AnnotationUtil.NULLABLE).build()
            );
        } else if ("nonnull".equalsIgnoreCase(simpleName)) {
            return Collections.singletonList(
                    AnnotationValue.builder(AnnotationUtil.NON_NULL).build()
            );
        }
        return Collections.singletonList(annotation);
    }
}