/*
* Copyright 2010-2016 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.resolve.calls.results
import org.jetbrains.kotlin.descriptors.CallableDescriptor
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall
import org.jetbrains.kotlin.resolve.calls.results.OverloadResolutionResults.Code
abstract class AbstractOverloadResolutionResults<D : CallableDescriptor> : OverloadResolutionResults<D> {
override fun isSuccess() = resultCode.isSuccess
override fun isSingleResult() = resultingCalls.size == 1 && resultCode != OverloadResolutionResults.Code.CANDIDATES_WITH_WRONG_RECEIVER
override fun isNothing() = resultCode == OverloadResolutionResults.Code.NAME_NOT_FOUND
override fun isAmbiguity() = resultCode == OverloadResolutionResults.Code.AMBIGUITY
override fun isIncomplete() = resultCode == OverloadResolutionResults.Code.INCOMPLETE_TYPE_INFERENCE
}
class SingleOverloadResolutionResult<D : CallableDescriptor>(val result: ResolvedCall<D>) : AbstractOverloadResolutionResults<D>() {
override fun getAllCandidates(): Collection<ResolvedCall<D>>? = null
override fun getResultingCalls(): Collection<ResolvedCall<D>> = listOf(result)
override fun getResultingCall() = result
override fun getResultingDescriptor(): D = result.resultingDescriptor
override fun getResultCode(): Code = when (result.status) {
ResolutionStatus.SUCCESS -> Code.SUCCESS
ResolutionStatus.RECEIVER_TYPE_ERROR -> Code.CANDIDATES_WITH_WRONG_RECEIVER
ResolutionStatus.INCOMPLETE_TYPE_INFERENCE -> Code.INCOMPLETE_TYPE_INFERENCE
else -> Code.SINGLE_CANDIDATE_ARGUMENT_MISMATCH
}
}
open class NameNotFoundResolutionResult<D : CallableDescriptor> : AbstractOverloadResolutionResults<D>() {
override fun getAllCandidates(): Collection<ResolvedCall<D>>? = null
override fun getResultingCalls(): Collection<ResolvedCall<D>> = emptyList()
override fun getResultingCall() = error("No candidates")
override fun getResultingDescriptor() = error("No candidates")
override fun getResultCode() = Code.NAME_NOT_FOUND
}
class ManyCandidates<D : CallableDescriptor>(
val candidates: Collection<ResolvedCall<D>>
) : AbstractOverloadResolutionResults<D>() {
override fun getAllCandidates(): Collection<ResolvedCall<D>>? = null
override fun getResultingCalls(): Collection<ResolvedCall<D>> = candidates
override fun getResultingCall() = error("Many candidates")
override fun getResultingDescriptor() = error("Many candidates")
override fun getResultCode() =
when (candidates.first().status) {
ResolutionStatus.RECEIVER_TYPE_ERROR -> Code.CANDIDATES_WITH_WRONG_RECEIVER
ResolutionStatus.SUCCESS -> Code.AMBIGUITY
ResolutionStatus.INCOMPLETE_TYPE_INFERENCE -> Code.INCOMPLETE_TYPE_INFERENCE
else -> Code.MANY_FAILED_CANDIDATES
}
}
class AllCandidates<D : CallableDescriptor>(private val allCandidates: Collection<ResolvedCall<D>>) : NameNotFoundResolutionResult<D>() {
override fun getAllCandidates() = allCandidates
}