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/*
* Copyright 2020 Google LLC
* Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
*
* 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 com.google.devtools.ksp.symbol.impl.binary
import com.google.devtools.ksp.IdKeyTriple
import com.google.devtools.ksp.KSObjectCache
import com.google.devtools.ksp.symbol.KSAnnotation
import com.google.devtools.ksp.symbol.KSNode
import com.google.devtools.ksp.symbol.KSTypeReference
import com.google.devtools.ksp.symbol.Location
import com.google.devtools.ksp.symbol.NonExistLocation
import com.google.devtools.ksp.symbol.Origin
import com.google.devtools.ksp.symbol.Variance
import com.google.devtools.ksp.symbol.impl.kotlin.KSTypeArgumentImpl
import org.jetbrains.kotlin.types.TypeProjection
class KSTypeArgumentDescriptorImpl private constructor(
val descriptor: TypeProjection,
override val origin: Origin,
override val parent: KSNode?
) : KSTypeArgumentImpl() {
companion object : KSObjectCache<IdKeyTriple<TypeProjection, Origin, KSNode?>, KSTypeArgumentDescriptorImpl>() {
fun getCached(descriptor: TypeProjection, origin: Origin, parent: KSNode?) = cache
.getOrPut(IdKeyTriple(descriptor, origin, parent)) {
KSTypeArgumentDescriptorImpl(descriptor, origin, parent)
}
}
override val location: Location = NonExistLocation
override val type: KSTypeReference by lazy {
KSTypeReferenceDescriptorImpl.getCached(descriptor.type, origin, if (parent != null) this else null)
}
override val variance: Variance by lazy {
if (descriptor.isStarProjection)
Variance.STAR
else {
when (descriptor.projectionKind) {
org.jetbrains.kotlin.types.Variance.IN_VARIANCE -> Variance.CONTRAVARIANT
org.jetbrains.kotlin.types.Variance.OUT_VARIANCE -> Variance.COVARIANT
else -> Variance.INVARIANT
}
}
}
override val annotations: Sequence<KSAnnotation> by lazy {
descriptor.type.annotations.asSequence().map { KSAnnotationDescriptorImpl.getCached(it, this) }
}
}
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