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fix #1? Dynamically cast KGP classes if necessary
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123 changes: 123 additions & 0 deletions
123
modules/bcv-gradle-plugin/src/main/kotlin/internal/Dynamic.kt
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,123 @@ | ||
| package dev.adamko.kotlin.binary_compatibility_validator.internal | ||
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| import java.lang.reflect.InvocationHandler | ||
| import java.lang.reflect.Method | ||
| import java.lang.reflect.Proxy | ||
| import kotlin.properties.ReadOnlyProperty | ||
| import kotlin.reflect.KClass | ||
| import kotlin.reflect.KProperty | ||
| import org.gradle.api.Named | ||
| import org.gradle.api.NamedDomainObjectCollection | ||
| import org.gradle.api.NamedDomainObjectContainer | ||
| import org.gradle.api.file.ConfigurableFileCollection | ||
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| /** | ||
| * Wrap a [target] instance, allowing dynamic calls. | ||
| */ | ||
| internal class Dynamic<out T : Any> private constructor( | ||
| private val cls: KClass<T>, | ||
| private val target: Any, | ||
| ) : InvocationHandler, ReadOnlyProperty<Any?, T> { | ||
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| private val targetName: String = target.javaClass.name | ||
| private val targetMethods: List<Method> = target.javaClass.methods.asList() | ||
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| private val proxy: T by lazy { | ||
| val proxy = Proxy.newProxyInstance( | ||
| target.javaClass.classLoader, | ||
| arrayOf(cls.java), | ||
| this, | ||
| ) | ||
| @Suppress("UNCHECKED_CAST") | ||
| proxy as T | ||
| } | ||
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| override fun invoke( | ||
| proxy: Any, | ||
| method: Method, | ||
| args: Array<out Any?>? | ||
| ): Any? { | ||
| for (delegateMethod in targetMethods) { | ||
| if (method matches delegateMethod) { | ||
| return if (args == null) | ||
| delegateMethod.invoke(target) | ||
| else | ||
| delegateMethod.invoke(target, *args) | ||
| } | ||
| } | ||
| throw UnsupportedOperationException("$targetName : $method args:[${args?.joinToString()}]") | ||
| } | ||
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| /** Delegated value provider */ | ||
| override operator fun getValue(thisRef: Any?, property: KProperty<*>): T = proxy | ||
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| companion object { | ||
| private infix fun Method.matches(other: Method): Boolean = | ||
| this.name == other.name && this.parameterTypes.contentEquals(other.parameterTypes) | ||
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| internal inline fun <reified T : Any> Dynamic(target: Any): Dynamic<T> = | ||
| Dynamic(T::class, target) | ||
| } | ||
| } | ||
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| //private class A { | ||
| // val name: String = "Team A" | ||
| // fun shout() = println("go team A!") | ||
| // fun echo(input: String) = input.repeat(5) | ||
| //} | ||
| // | ||
| //private class B { | ||
| // val name: String = "Team B" | ||
| // fun shout() = println("go team B!") | ||
| // fun echo(call: String) = call.repeat(2) | ||
| //} | ||
| // | ||
| //private interface Shoutable { | ||
| // val name: String | ||
| // fun shout() | ||
| // fun echo(call: String): String | ||
| //} | ||
| // | ||
| // | ||
| //private fun main() { | ||
| // val a = A() | ||
| // val b = B() | ||
| // | ||
| // val sa by DuckTyper<Shoutable>(a) | ||
| // val sb: Shoutable? by DuckTyper(b) | ||
| // | ||
| // sa?.shout() | ||
| // sb?.shout() | ||
| // println(sa?.echo("hello...")) | ||
| // println(sb?.echo("hello...")) | ||
| // println(sa?.name) | ||
| // println(sb?.name) | ||
| //} | ||
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| /** Wrap [org.jetbrains.kotlin.gradle.plugin.KotlinTargetsContainer] */ | ||
| internal interface KotlinTargetsContainerWrapped { | ||
| val targets: NamedDomainObjectCollection<Any> | ||
| } | ||
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| /** Wrap [org.jetbrains.kotlin.gradle.plugin.KotlinTarget] */ | ||
| internal interface KotlinTargetWrapped { | ||
| val platformType: Any | ||
| val targetName: String | ||
| val compilations: NamedDomainObjectContainer<Named> | ||
| } | ||
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| /** Wrap [org.jetbrains.kotlin.gradle.plugin.KotlinPlatformType] */ | ||
| internal interface KotlinPlatformTypeWrapped : Named | ||
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| /** Wrap [org.jetbrains.kotlin.gradle.plugin.KotlinCompilation] */ | ||
| internal interface KotlinCompilationWrapped { | ||
| val output: Any | ||
| } | ||
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| /** Wrap [org.jetbrains.kotlin.gradle.plugin.KotlinCompilationOutput] */ | ||
| internal interface KotlinCompilationOutputWrapped { | ||
| val classesDirs: ConfigurableFileCollection | ||
| } |