107 lines
2.9 KiB
Kotlin

@file:Suppress("MemberVisibilityCanBePrivate")
package app.revanced.patcher.patch
import app.revanced.patcher.PatchClass
import app.revanced.patcher.Patcher
import app.revanced.patcher.data.Context
import app.revanced.patcher.patch.options.PatchOptions
import java.io.Closeable
import kotlin.reflect.full.findAnnotation
/**
* A ReVanced patch.
* If an implementation of [Patch] also implements [Closeable]
* it will be closed in reverse execution order of patches executed by ReVanced [Patcher].
*
* @param T The [Context] type this patch will work on.
*/
sealed class Patch<out T : Context<*>> {
/**
* The name of the patch.
*/
var name: String? = null
private set
/**
* The description of the patch.
*/
var description: String? = null
private set
/**
* The packages the patch is compatible with.
*/
var compatiblePackages: Set<CompatiblePackage>? = null
private set
/**
* Other patches this patch depends on.
*/
var dependencies: Set<PatchClass>? = null
private set
/**
* Weather or not the patch should be used.
*/
var use = true
private set
// TODO: Remove this property, once integrations are coupled with patches.
/**
* Weather or not the patch requires integrations.
*/
var requiresIntegrations = false
private set
/**
* The options of the patch associated by the options key.
*/
val options = PatchOptions()
init {
this::class.findAnnotation<app.revanced.patcher.patch.annotation.Patch>()?.let { annotation ->
name = annotation.name.ifEmpty { null }
description = annotation.description.ifEmpty { null }
compatiblePackages = annotation.compatiblePackages
.map { CompatiblePackage(it.name, it.versions.toSet().ifEmpty { null }) }
.toSet().ifEmpty { null }
dependencies = annotation.dependencies.toSet().ifEmpty { null }
use = annotation.use
requiresIntegrations = annotation.requiresIntegrations
}
}
/**
* The execution function of the patch.
*
* @param context The [Context] the patch will work on.
* @return The result of executing the patch.
*/
abstract fun execute(context: @UnsafeVariance T)
override fun hashCode() = name.hashCode()
override fun toString() = name ?: this::class.simpleName ?: "Unnamed patch"
override fun equals(other: Any?): Boolean {
if (this === other) return true
if (javaClass != other?.javaClass) return false
other as Patch<*>
return name == other.name
}
/**
* A package a [Patch] is compatible with.
*
* @param name The name of the package.
* @param versions The versions of the package.
*/
class CompatiblePackage(
val name: String,
val versions: Set<String>? = null,
)
}