compiler-plugin/src/main/kotlin/com/google/devtools/ksp/processor/FunctionTypeProcessor.kt

/*
 * 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 FunctionTypeProcessor : AbstractTestProcessor() {
    val results = mutableListOf<String>()
    val typeCollector = TypeCollector()
    val types = mutableSetOf<KSType>()

    override fun process(resolver: Resolver): List<KSAnnotated> {
        val files = resolver.getNewFiles()
        val ignoredNames = mutableSetOf<String>()

        files.forEach {
            it.accept(
                object : KSTopDownVisitor<Unit, Unit>() {
                    override fun defaultHandler(node: KSNode, data: Unit) = Unit

                    override fun visitPropertyDeclaration(property: KSPropertyDeclaration, data: Unit) {
                        val type = property.type.resolve()
                        val propertyName = property.simpleName.asString()
                        val typeName = type.declaration.simpleName.asString()
                        results.add("$propertyName: $typeName : ${type.isFunctionType}, ${type.isSuspendFunctionType}")
                    }
                }, Unit
            )
        }

        return emptyList()
    }

    override fun toResult(): List<String> {
        return results.sorted()
    }

}