org.jetbrains.kotlin.codegen.intrinsics.HashCode.kt Maven / Gradle / Ivy
/*
* 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.codegen.intrinsics
import org.jetbrains.kotlin.codegen.AsmUtil
import org.jetbrains.kotlin.codegen.Callable
import org.jetbrains.kotlin.codegen.CallableMethod
import org.jetbrains.kotlin.config.JvmTarget
import org.jetbrains.kotlin.resolve.jvm.AsmTypes
import org.jetbrains.org.objectweb.asm.Opcodes
import org.jetbrains.org.objectweb.asm.Type
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter
class HashCode(private val jvmTarget: JvmTarget) : IntrinsicMethod() {
override fun toCallable(method: CallableMethod): Callable {
val receiverType = method.dispatchReceiverType ?: method.extensionReceiverType ?: error("No receiver for callable: $method")
val useObjectHashCode = JvmTarget.JVM_1_6 == jvmTarget || !AsmUtil.isPrimitive(receiverType)
return object : IntrinsicCallable(
Type.INT_TYPE,
emptyList(),
if (useObjectHashCode) nullOrObject(method.dispatchReceiverType) else method.dispatchReceiverType,
if (useObjectHashCode) nullOrObject(method.extensionReceiverType) else method.extensionReceiverType
) {
override fun invokeIntrinsic(v: InstructionAdapter) {
v.invokeHashCode(if (useObjectHashCode) AsmTypes.OBJECT_TYPE else receiverType)
}
}
}
companion object {
fun InstructionAdapter.invokeHashCode(type: Type) {
if (AsmUtil.isPrimitive(type)) {
val boxedType = AsmUtil.boxType(type)
visitMethodInsn(Opcodes.INVOKESTATIC, boxedType.internalName, "hashCode", Type.getMethodDescriptor(Type.INT_TYPE, type), false)
}
else {
visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Object", "hashCode", "()I", false)
}
}
}
}