feat: improved Patch Options

Removed a lot of the type mess. There's still some duplicated code PatchOption.kt, but I'm afraid there's nothing I can do about that. It's not a big deal anyway.

src/main/kotlin/app/revanced/patcher/patch/Patch.kt

@@ -27,7 +27,7 @@ abstract class OptionsContainer {
     @Suppress("MemberVisibilityCanBePrivate")
     val options = PatchOptions()
 
-    protected fun option(opt: PatchOption<*>): PatchOption<*> {
+    protected fun <T> option(opt: PatchOption<T>): PatchOption<T> {
         options.register(opt)
         return opt
     }

src/main/kotlin/app/revanced/patcher/patch/PatchOption.kt

@@ -33,8 +33,22 @@ class PatchOptions(vararg options: PatchOption<*>) : Iterable<PatchOption<*>> {
      * Get a [PatchOption] by its key.
      * @param key The key of the [PatchOption].
      */
+    @JvmName("getUntyped")
     operator fun get(key: String) = register[key] ?: throw NoSuchOptionException(key)
 
+    /**
+     * Get a [PatchOption] by its key.
+     * @param key The key of the [PatchOption].
+     */
+    inline operator fun <reified T> get(key: String): PatchOption<T> {
+        val opt = get(key)
+        if (opt.value !is T) throw InvalidTypeException(
+            opt.value?.let { it::class.java.canonicalName } ?: "null",
+            T::class.java.canonicalName
+        )
+        return opt as PatchOption<T>
+    }
+
     /**
      * Set the value of a [PatchOption].
      * @param key The key of the [PatchOption].
@@ -42,7 +56,7 @@ class PatchOptions(vararg options: PatchOption<*>) : Iterable<PatchOption<*>> {
      * Please note that using the wrong value type results in a runtime error.
      */
     inline operator fun <reified T> set(key: String, value: T) {
-        @Suppress("UNCHECKED_CAST") val opt = get(key) as PatchOption<T>
+        val opt = get<T>(key)
         if (opt.value !is T) throw InvalidTypeException(
             T::class.java.canonicalName,
             opt.value?.let { it::class.java.canonicalName } ?: "null"
@@ -99,7 +113,8 @@ sealed class PatchOption<T>(
      * Gets the value of the option.
      * Please note that using the wrong value type results in a runtime error.
      */
-    inline operator fun <reified V> getValue(thisRef: Any?, property: KProperty<*>): V? {
+    @JvmName("getValueTyped")
+    inline operator fun <reified V> getValue(thisRef: Nothing?, property: KProperty<*>): V? {
         if (value !is V?) throw InvalidTypeException(
             V::class.java.canonicalName,
             value?.let { it::class.java.canonicalName } ?: "null"
@@ -107,11 +122,14 @@ sealed class PatchOption<T>(
         return value as? V?
     }
 
+    operator fun getValue(thisRef: Any?, property: KProperty<*>) = value
+
     /**
      * Gets the value of the option.
      * Please note that using the wrong value type results in a runtime error.
      */
-    inline operator fun <reified V> setValue(thisRef: Any?, property: KProperty<*>, new: V) {
+    @JvmName("setValueTyped")
+    inline operator fun <reified V> setValue(thisRef: Nothing?, property: KProperty<*>, new: V) {
         if (value !is V) throw InvalidTypeException(
             V::class.java.canonicalName,
             value?.let { it::class.java.canonicalName } ?: "null"
@@ -119,6 +137,10 @@ sealed class PatchOption<T>(
         value = new as T
     }
 
+    operator fun setValue(thisRef: Any?, property: KProperty<*>, new: T?) {
+        value = new
+    }
+
     /**
      * A [PatchOption] representing a [String].
      * @see PatchOption

src/test/kotlin/app/revanced/patcher/patch/PatchOptionsTest.kt

@@ -35,7 +35,9 @@ internal class PatchOptionsTest {
                 }
             }
         }
-        val option = options["key1"]
+        val option = options.get<String>("key1")
+        // or: val option: String? by options["key1"]
+        // then you won't need `.value` every time
         println(option.value)
         options["key1"] = "Hello, world!"
         println(option.value)
@@ -55,6 +57,9 @@ internal class PatchOptionsTest {
         // > options["key2"] = null
         // is not possible because Kotlin
         // cannot reify the type "Nothing?".
+        // So we have to do this instead:
+        options["key2"] = null as Any?
+        // This is a cleaner replacement for the above:
         options.nullify("key2")
     }
 
@@ -66,12 +71,19 @@ internal class PatchOptionsTest {
     }
 
     @Test
-    fun `should fail because of invalid value type`() {
+    fun `should fail because of invalid value type when setting an option`() {
         assertThrows<InvalidTypeException> {
             options["key1"] = 123
         }
     }
 
+    @Test
+    fun `should fail because of invalid value type when getting an option`() {
+        assertThrows<InvalidTypeException> {
+            options.get<Int>("key1")
+        }
+    }
+
     @Test
     fun `should fail because of an illegal value`() {
         assertThrows<IllegalValueException> {

src/test/kotlin/app/revanced/patcher/usage/bytecode/ExampleBytecodePatch.kt

@@ -169,27 +169,27 @@ class ExampleBytecodePatch : BytecodePatch(listOf(ExampleFingerprint)) {
     }
 
     companion object : OptionsContainer() {
-        private var key1: String? by option(
+        private var key1 by option(
             PatchOption.StringOption(
                 "key1", "default", "title", "description", true
             )
         )
-        private var key2: Boolean? by option(
+        private var key2 by option(
             PatchOption.BooleanOption(
                 "key2", true, "title", "description" // required defaults to false
             )
         )
-        private var key3: String? by option(
+        private var key3 by option(
             PatchOption.StringListOption(
                 "key3", "TEST", listOf("TEST", "TEST1", "TEST2"), "title", "description"
             )
         )
-        private var key4: Int? by option(
+        private var key4 by option(
             PatchOption.IntListOption(
                 "key4", 1, listOf(1, 2, 3), "title", "description"
             )
         )
-        private var key5: String? by option(
+        private var key5 by option(
             PatchOption.StringOption(
                 "key5", null, "title", "description", true
             )