org.jetbrains.kotlin.codegen.intrinsics.CompareTo.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.comparisonOperandType
import org.jetbrains.kotlin.codegen.Callable
import org.jetbrains.kotlin.codegen.CallableMethod
import org.jetbrains.org.objectweb.asm.Type
import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter
class CompareTo : IntrinsicMethod() {
private fun genInvoke(type: Type?, v: InstructionAdapter) {
when (type) {
Type.INT_TYPE, Type.CHAR_TYPE -> v.invokestatic(IntrinsicMethods.INTRINSICS_CLASS_NAME, "compare", "(II)I", false)
Type.LONG_TYPE -> v.lcmp()
Type.FLOAT_TYPE -> v.invokestatic("java/lang/Float", "compare", "(FF)I", false)
Type.DOUBLE_TYPE -> v.invokestatic("java/lang/Double", "compare", "(DD)I", false)
else -> throw UnsupportedOperationException()
}
}
override fun toCallable(method: CallableMethod): Callable {
val parameterType = comparisonOperandType(
method.dispatchReceiverType ?: method.extensionReceiverType,
method.parameterTypes.single()
)
return createBinaryIntrinsicCallable(method.returnType, parameterType, parameterType, null) {
genInvoke(parameterType, it)
}
}
}