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RuntimePropertyResolver.kt
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RuntimePropertyResolver.kt
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/*
* Copyright 2023 the original author or authors.
*
* 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 org.gradle.internal.declarativedsl.mappingToJvm
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.ReadResolution
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.ReadResolution.ResolvedRead
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.ReadResolution.UnresolvedRead
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.WriteResolution
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.WriteResolution.ResolvedWrite
import org.gradle.internal.declarativedsl.mappingToJvm.RuntimePropertyResolver.WriteResolution.UnresolvedWrite
import java.lang.reflect.Modifier
import kotlin.reflect.KClass
import kotlin.reflect.KMutableProperty
import kotlin.reflect.KProperty
import kotlin.reflect.KVisibility
import kotlin.reflect.full.memberFunctions
import kotlin.reflect.full.memberProperties
interface RuntimePropertyResolver {
fun resolvePropertyRead(receiverClass: KClass<*>, name: String): ReadResolution
fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): WriteResolution
sealed interface ReadResolution {
data class ResolvedRead(val getter: DeclarativeRuntimePropertyGetter) : ReadResolution
data object UnresolvedRead : ReadResolution
}
sealed interface WriteResolution {
data class ResolvedWrite(val setter: DeclarativeRuntimePropertySetter) : WriteResolution
data object UnresolvedWrite : WriteResolution
}
}
object ReflectionRuntimePropertyResolver : RuntimePropertyResolver {
override fun resolvePropertyRead(receiverClass: KClass<*>, name: String): ReadResolution {
val getter = findKotlinProperty(receiverClass, name)?.let(::kotlinPropertyGetter)
?: findKotlinFunctionGetter(receiverClass, name)
?: findJavaGetter(receiverClass, name)
return getter?.let(::ResolvedRead) ?: UnresolvedRead
}
override fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): WriteResolution {
val setter = (findKotlinProperty(receiverClass, name) as? KMutableProperty<*>)?.let(::kotlinPropertySetter)
?: findKotlinFunctionSetter(receiverClass, name)
?: findJavaSetter(receiverClass, name)
return setter?.let(::ResolvedWrite) ?: UnresolvedWrite
}
private
fun findKotlinProperty(receiverClass: KClass<*>, name: String) =
receiverClass.memberProperties.find { it.name == name && it.visibility == KVisibility.PUBLIC }
private
fun kotlinPropertyGetter(property: KProperty<*>) =
DeclarativeRuntimePropertyGetter { property.call(it) }
private
fun kotlinPropertySetter(property: KMutableProperty<*>) =
DeclarativeRuntimePropertySetter { receiver, value -> property.setter.call(receiver, value) }
private
fun findKotlinFunctionGetter(receiverClass: KClass<*>, name: String) =
receiverClass.memberFunctions.find { it.name == getterName(name) && it.parameters.size == 1 && it.visibility == KVisibility.PUBLIC }
?.let { property -> DeclarativeRuntimePropertyGetter { property.call(it) } }
private
fun findKotlinFunctionSetter(receiverClass: KClass<*>, name: String) =
receiverClass.memberFunctions.find { it.name == setterName(name) && it.visibility == KVisibility.PUBLIC }
?.let { function -> DeclarativeRuntimePropertySetter { receiver: Any, value: Any? -> function.call(receiver, value) } }
private
fun findJavaGetter(receiverClass: KClass<*>, name: String) =
receiverClass.java.methods.find { it.name == getterName(name) && it.parameters.isEmpty() && it.modifiers.and(Modifier.PUBLIC) != 0 }
?.let { method -> DeclarativeRuntimePropertyGetter { method.invoke(it) } }
private
fun findJavaSetter(receiverClass: KClass<*>, name: String) =
receiverClass.java.methods.find { it.name == setterName(name) && it.parameters.size == 1 && it.modifiers.and(Modifier.PUBLIC) != 0 }
?.let { method -> DeclarativeRuntimePropertySetter { receiver: Any, value: Any? -> method.invoke(receiver, value) } }
private
fun getterName(propertyName: String) = "get" + capitalize(propertyName)
private
fun setterName(propertyName: String) = "set" + capitalize(propertyName)
private
fun capitalize(propertyName: String) = propertyName.replaceFirstChar {
if (it.isLowerCase()) it.uppercaseChar() else it
}
}
class CompositePropertyResolver(private val resolvers: List<RuntimePropertyResolver>) : RuntimePropertyResolver {
override fun resolvePropertyRead(receiverClass: KClass<*>, name: String): ReadResolution {
resolvers.forEach {
val resolution = it.resolvePropertyRead(receiverClass, name)
if (resolution !is UnresolvedRead)
return resolution
}
return UnresolvedRead
}
override fun resolvePropertyWrite(receiverClass: KClass<*>, name: String): WriteResolution {
resolvers.forEach {
val resolution = it.resolvePropertyWrite(receiverClass, name)
if (resolution !is UnresolvedWrite)
return resolution
}
return UnresolvedWrite
}
}