org.jetbrains.kotlin.codegen.intrinsics.LateinitIntrinsics.kt Maven / Gradle / Ivy
/*
* Copyright 2010-2017 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.codegen.intrinsics
import org.jetbrains.kotlin.codegen.ExpressionCodegen
import org.jetbrains.kotlin.codegen.StackValue
import org.jetbrains.kotlin.descriptors.PropertyDescriptor
import org.jetbrains.kotlin.psi.KtCallableReferenceExpression
import org.jetbrains.kotlin.resolve.calls.callUtil.getResolvedCallWithAssert
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.resolve.scopes.receivers.ExpressionReceiver
import org.jetbrains.org.objectweb.asm.Opcodes
import org.jetbrains.org.objectweb.asm.Type
object LateinitIsInitialized : IntrinsicPropertyGetter() {
override fun generate(resolvedCall: ResolvedCall<*>?, codegen: ExpressionCodegen, returnType: Type, receiver: StackValue): StackValue? {
val value = getStackValue(resolvedCall ?: return null, codegen) ?: return null
return StackValue.compareWithNull(value, Opcodes.IFNULL)
}
}
private fun getStackValue(resolvedCall: ResolvedCall<*>, codegen: ExpressionCodegen): StackValue? {
val expression =
(resolvedCall.extensionReceiver as? ExpressionReceiver)?.expression as? KtCallableReferenceExpression ?: return null
val referenceResolvedCall = expression.callableReference.getResolvedCallWithAssert(codegen.bindingContext)
val receiver = codegen.generateCallableReferenceReceiver(referenceResolvedCall) ?: StackValue.none()
val target = referenceResolvedCall.resultingDescriptor as PropertyDescriptor
return codegen.intermediateValueForProperty(target, true, false, null, false, receiver, null, true)
}