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/*
 * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
 * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
 */

package kotlin.reflect.jvm.internal.impl.resolve.sam

import kotlin.reflect.jvm.internal.impl.container.DefaultImplementation
import kotlin.reflect.jvm.internal.impl.descriptors.CallableDescriptor
import kotlin.reflect.jvm.internal.impl.descriptors.ClassDescriptor
import kotlin.reflect.jvm.internal.impl.types.KotlinType

@DefaultImplementation(impl = SamConversionOracleDefault::class)
interface SamConversionOracle {
    fun shouldRunSamConversionForFunction(candidate: CallableDescriptor): Boolean
    fun isPossibleSamType(samType: KotlinType): Boolean
    fun isJavaApplicableCandidate(candidate: CallableDescriptor): Boolean
}

class SamConversionOracleDefault : SamConversionOracle {
    override fun shouldRunSamConversionForFunction(candidate: CallableDescriptor): Boolean = true

    override fun isPossibleSamType(samType: KotlinType): Boolean {
        val descriptor = samType.constructor.declarationDescriptor
        return descriptor is ClassDescriptor && descriptor.isFun
    }

    override fun isJavaApplicableCandidate(candidate: CallableDescriptor): Boolean = false
}




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