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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.KSAnnotated
import com.google.devtools.ksp.symbol.KSClassDeclaration
import com.google.devtools.ksp.symbol.KSFunctionDeclaration
import com.google.devtools.ksp.symbol.KSNode
import com.google.devtools.ksp.symbol.KSTypeReference
import com.google.devtools.ksp.symbol.Nullability
import com.google.devtools.ksp.symbol.Origin
import com.google.devtools.ksp.symbol.Variance
import com.google.devtools.ksp.visitor.KSTopDownVisitor
class ResolveJavaTypeProcessor : AbstractTestProcessor() {
val results = mutableListOf<String>()
val visitor = ResolveJavaTypeVisitor()
override fun toResult(): List<String> {
return results
}
override fun process(resolver: Resolver): List<KSAnnotated> {
val symbol = resolver.getClassDeclarationByName(resolver.getKSNameFromString("C"))
val symbolTypeParameter = resolver.getClassDeclarationByName(resolver.getKSNameFromString("Base"))
val another = resolver.getClassDeclarationByName(resolver.getKSNameFromString("Another"))
val javaEnum = resolver.getClassDeclarationByName(resolver.getKSNameFromString("JavaEnum"))
assert(symbol?.origin == Origin.JAVA)
symbol!!.accept(visitor, Unit)
symbolTypeParameter!!.accept(visitor, Unit)
another!!.accept(visitor, Unit)
javaEnum!!.accept(visitor, Unit)
return emptyList()
}
inner class ResolveJavaTypeVisitor : KSTopDownVisitor<Unit, Unit>() {
override fun defaultHandler(node: KSNode, data: Unit) {
}
override fun visitClassDeclaration(classDeclaration: KSClassDeclaration, data: Unit) {
classDeclaration.declarations.forEach { it.accept(this, Unit) }
}
override fun visitFunctionDeclaration(function: KSFunctionDeclaration, data: Unit) {
function.parameters.forEach {
it.type.accept(this, Unit)
}
function.returnType?.accept(this, Unit)
}
override fun visitTypeReference(typeReference: KSTypeReference, data: Unit) {
if (typeReference.origin == Origin.JAVA) {
results.add(typeReference.render())
}
}
}
fun KSTypeReference.render(): String {
val sb = StringBuilder(this.resolve().declaration.qualifiedName?.asString() ?: "<ERROR>")
if (this.resolve().arguments.toList().isNotEmpty()) {
sb.append(
"<${this.resolve().arguments.map {
when (it.variance) {
Variance.STAR -> "*"
Variance.INVARIANT -> ""
Variance.CONTRAVARIANT -> "in "
Variance.COVARIANT -> "out "
} + it.type?.render()
}.joinToString(", ")}>"
)
}
if (this.resolve().nullability != Nullability.NOT_NULL) {
sb.append("?")
}
return sb.toString()
}
}
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