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package me.bush.illnamethislater
import java.lang.reflect.Modifier
import java.util.concurrent.atomic.AtomicInteger
import java.util.concurrent.atomic.AtomicLong
import kotlin.reflect.KCallable
import kotlin.reflect.KClass
import kotlin.reflect.KProperty
import kotlin.reflect.full.allSuperclasses
import kotlin.reflect.full.declaredMembers
import kotlin.reflect.full.starProjectedType
import kotlin.reflect.jvm.javaField
import kotlin.reflect.jvm.javaGetter
// author bush
// since 1.0.0
/*
* Using [KClass.members] only returns public members, and
* using [KClass.declaredMembers] doesn't return inherited
* members. This returns all members, private and inherited.
*/
internal val <T : Any> KClass<T>.allMembers
get() = declaredMembers + allSuperclasses.flatMap { it.declaredMembers }
/*
* Checks if a [KCallable] is static on the jvm, and handles invocation accordingly.
*
* I am not aware of a better alternative that works with `object` classes.
*/
internal fun <R> KCallable<R>.handleCall(receiver: Any) = if (static) call() else call(receiver)
/*
* Checks if the calling [KCallable] is a static java field.
*
* Because kotlin likes to be funny, properties belonging to
* `object` classes are static, but their getters are not.
*
* If there is a getter (the property is not private),
* we will be accessing it through that, so we can stop checking.
*
* Otherwise, we check if the field is static with java reflection.
*/
internal val KCallable<*>.static
get() = if (this !is KProperty<*> || javaGetter != null) false
else javaField?.let { Modifier.isStatic(it.modifiers) } ?: false
/*
* Finds all listeners in a class. (properties and methods)
*/
@Suppress("UNCHECKED_CAST") // This cannot fail
internal inline val KClass<*>.listeners
get() = allMembers.asSequence().filter {
it.returnType == Listener::class.starProjectedType
} as Sequence<KCallable<Listener>>
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