org.jetbrains.kotlin.descriptors.annotations.Annotations.kt Maven / Gradle / Ivy

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/*
 * Copyright 2010-2015 JetBrains s.r.o.
 *
 * 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
 *
 * 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 org.jetbrains.kotlin.descriptors.annotations

import org.jetbrains.annotations.Nullable
import org.jetbrains.kotlin.name.FqName
import java.util.Collections

public trait Annotations : Iterable {

    public fun isEmpty(): Boolean

    public fun findAnnotation(fqName: FqName): AnnotationDescriptor?

    class object {
        public val EMPTY: Annotations = object : Annotations {
            override fun isEmpty() = true

            override fun findAnnotation(fqName: FqName) = null

            override fun iterator() = Collections.emptyList().iterator()
        }
    }
}