org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedTypeParameterDescriptor.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.serialization.deserialization.descriptors

import org.jetbrains.kotlin.descriptors.SourceElement
import org.jetbrains.kotlin.descriptors.SupertypeLoopChecker
import org.jetbrains.kotlin.descriptors.annotations.AnnotationWithTarget
import org.jetbrains.kotlin.descriptors.annotations.Annotations
import org.jetbrains.kotlin.descriptors.impl.AbstractLazyTypeParameterDescriptor
import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
import org.jetbrains.kotlin.serialization.ProtoBuf
import org.jetbrains.kotlin.serialization.deserialization.Deserialization
import org.jetbrains.kotlin.serialization.deserialization.DeserializationContext
import org.jetbrains.kotlin.serialization.deserialization.upperBounds
import org.jetbrains.kotlin.types.KotlinType

class DeserializedTypeParameterDescriptor(
        private val c: DeserializationContext,
        private val proto: ProtoBuf.TypeParameter,
        index: Int
) : AbstractLazyTypeParameterDescriptor(
        c.storageManager, c.containingDeclaration, c.nameResolver.getName(proto.name),
        Deserialization.variance(proto.variance), proto.reified, index, SourceElement.NO_SOURCE
) {
    private val annotations = DeserializedAnnotationsWithPossibleTargets(c.storageManager) {
        c.components.annotationAndConstantLoader
                .loadTypeParameterAnnotations(proto, c.nameResolver)
                .map { AnnotationWithTarget(it, null) }
    }

    override fun getAnnotations(): Annotations = annotations

    override fun resolveUpperBounds(): List {
        val upperBounds = proto.upperBounds(c.typeTable)
        if (upperBounds.isEmpty()) {
            return listOf(this.builtIns.defaultBound)
        }
        return upperBounds.map {
            c.typeDeserializer.type(it, Annotations.EMPTY)
        }
    }

    override fun getSupertypeLoopChecker() = SupertypeLoopChecker.EMPTY

    override fun reportCycleError(type: KotlinType) = throw IllegalStateException(
            "There should be no cycles for deserialized type parameters, but found for: $this")
}