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/*
* Copyright 2022 Google LLC
* Copyright 2010-2022 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.impl.symbol.kotlin
import com.google.devtools.ksp.IdKeyPair
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.KSTypeArgument
import com.google.devtools.ksp.symbol.KSTypeReference
import com.google.devtools.ksp.symbol.KSVisitor
import com.google.devtools.ksp.symbol.Location
import com.google.devtools.ksp.symbol.Origin
import com.google.devtools.ksp.symbol.Variance
import org.jetbrains.kotlin.analysis.api.KtStarTypeProjection
import org.jetbrains.kotlin.analysis.api.KtTypeArgumentWithVariance
import org.jetbrains.kotlin.analysis.api.KtTypeProjection
class KSTypeArgumentImpl private constructor(
private val ktTypeProjection: KtTypeProjection,
override val parent: KSNode?
) : KSTypeArgument {
companion object : KSObjectCache<IdKeyPair<KtTypeProjection, KSNode?>, KSTypeArgumentImpl>() {
fun getCached(ktTypeProjection: KtTypeProjection, parent: KSNode? = null) =
cache.getOrPut(IdKeyPair(ktTypeProjection, parent)) { KSTypeArgumentImpl(ktTypeProjection, parent) }
}
override val variance: Variance by lazy {
when (ktTypeProjection) {
is KtStarTypeProjection -> Variance.STAR
is KtTypeArgumentWithVariance -> {
when (ktTypeProjection.variance) {
org.jetbrains.kotlin.types.Variance.INVARIANT -> Variance.INVARIANT
org.jetbrains.kotlin.types.Variance.IN_VARIANCE -> Variance.CONTRAVARIANT
org.jetbrains.kotlin.types.Variance.OUT_VARIANCE -> Variance.COVARIANT
else -> throw IllegalStateException("Unexpected variance")
}
}
}
}
override val type: KSTypeReference? by lazy {
ktTypeProjection.type?.let { KSTypeReferenceImpl.getCached(it, this@KSTypeArgumentImpl) }
}
override val annotations: Sequence<KSAnnotation> by lazy {
ktTypeProjection.type?.annotations() ?: emptySequence()
}
override val origin: Origin = parent?.origin ?: Origin.SYNTHETIC
override val location: Location
get() = TODO("Not yet implemented")
override fun <D, R> accept(visitor: KSVisitor<D, R>, data: D): R {
return visitor.visitTypeArgument(this, data)
}
override fun toString(): String {
return "$variance $type"
}
}
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