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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.processor
import com.google.devtools.ksp.processing.Resolver
import com.google.devtools.ksp.symbol.*
import com.google.devtools.ksp.visitor.KSTopDownVisitor
open class TypeComposureProcessor : AbstractTestProcessor() {
val results = mutableListOf<String>()
override fun process(resolver: Resolver): List<KSAnnotated> {
val files = resolver.getNewFiles()
val classes = mutableSetOf<KSClassDeclaration>()
val references = mutableSetOf<KSTypeReference>()
files.forEach {
it.accept(
object : KSTopDownVisitor<Unit, Unit>() {
override fun defaultHandler(node: KSNode, data: Unit) = Unit
override fun visitClassDeclaration(classDeclaration: KSClassDeclaration, data: Unit) {
super.visitClassDeclaration(classDeclaration, Unit)
classes.add(classDeclaration)
}
override fun visitTypeReference(typeReference: KSTypeReference, data: Unit) {
super.visitTypeReference(typeReference, data)
references.add(typeReference)
}
},
Unit
)
}
val composed = mutableSetOf<KSType>()
val types = references.filter { it.resolve()!!.arguments.toList().size == 1 }.map { it.resolve()!! }
val refs0Arg = references.filter { it.resolve()!!.arguments.toList().size == 0 }
for (c in classes) {
for (ref in refs0Arg) {
composed.add(c.asType(listOf(resolver.getTypeArgument(ref, Variance.INVARIANT))))
composed.add(c.asType(listOf(resolver.getTypeArgument(ref, Variance.COVARIANT))))
composed.add(c.asType(listOf(resolver.getTypeArgument(ref, Variance.CONTRAVARIANT))))
composed.add(c.asType(listOf(resolver.getTypeArgument(ref, Variance.STAR))))
}
}
for (t in types) {
for (ref in refs0Arg) {
composed.add(t.replace(listOf(resolver.getTypeArgument(ref, Variance.INVARIANT))))
composed.add(t.replace(listOf(resolver.getTypeArgument(ref, Variance.COVARIANT))))
composed.add(t.replace(listOf(resolver.getTypeArgument(ref, Variance.CONTRAVARIANT))))
composed.add(t.starProjection())
}
}
val sorted = composed.sortedBy { it.toString() }
for (i in sorted) {
for (j in sorted) {
results.add("$i ?= $j : ${i.isAssignableFrom(j)}")
}
}
return emptyList()
}
override fun toResult(): List<String> {
return results
}
}
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