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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.*
open class TypeAliasProcessor : AbstractTestProcessor() {
val results = mutableListOf<String>()
val typeCollector = TypeCollectorNoAccessor()
val types = mutableListOf<KSType>()
override fun process(resolver: Resolver): List<KSAnnotated> {
val files = resolver.getNewFiles()
files.forEach {
it.accept(typeCollector, types)
}
val sortedTypes = types.sortedBy { it.declaration.simpleName.asString() }
val byFinalSignature = mutableMapOf<String, MutableList<KSType>>()
for (i in sortedTypes) {
val r = mutableListOf<String>()
var a: KSType? = i
while(a != null) {
r.add(a.toSignature())
a = (a.declaration as? KSTypeAlias)?.type?.resolve()
}
results.add(r.joinToString(" = "))
byFinalSignature.getOrPut(r.last()) {
mutableListOf()
}.add(i)
}
byFinalSignature.forEach { (signature, sameTypeAliases) ->
for (i in sameTypeAliases) {
for (j in sameTypeAliases) {
assert(i == j) {
"$i and $j both map to $signature, equals should return true"
}
}
}
assert(sameTypeAliases.map { it.hashCode() }.distinct().size == 1) {
"different hashcodes for members of $signature"
}
}
return emptyList()
}
private fun KSType.toSignature(): String = buildString {
append(declaration.simpleName.asString())
if (arguments.isNotEmpty()) {
append("<")
arguments.map {
it.type?.resolve()?.toSignature() ?: "<error>"
}.forEach(this::append)
append(">")
}
}
override fun toResult(): List<String> {
return results
}
}
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