kotlin.reflect.jvm.internal.KCallableContainerImpl.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 kotlin.reflect.jvm.internal

import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.load.java.structure.reflect.desc
import org.jetbrains.kotlin.name.Name
import org.jetbrains.kotlin.resolve.scopes.JetScope
import kotlin.reflect.KotlinReflectionInternalError

abstract class KCallableContainerImpl {
    abstract val jClass: Class<*>

    abstract val scope: JetScope

    protected fun findPropertyDescriptor(name: String, receiverParameterClass: Class<*>? = null): () -> PropertyDescriptor = {
        val receiverDesc = receiverParameterClass?.desc

        val properties = scope
                .getProperties(Name.identifier(name))
                .filter { descriptor ->
                    descriptor is PropertyDescriptor &&
                    descriptor.getName().asString() == name &&
                    with(descriptor.getExtensionReceiverParameter()) {
                        (this == null && receiverDesc == null) ||
                        (this != null && RuntimeTypeMapper.mapTypeToJvmDesc(getType()) == receiverDesc)
                    }
                }

        if (properties.size() != 1) {
            val debugText = if (receiverParameterClass == null) name else "${receiverParameterClass.getSimpleName()}.$name"
            throw KotlinReflectionInternalError(
                    if (properties.isEmpty()) "Property '$debugText' not resolved in $this"
                    else "${properties.size()} properties '$debugText' resolved in $this"
            )
        }

        properties.single() as PropertyDescriptor
    }
}