Feature/keyed enum

build.gradle

@@ -1,7 +1,7 @@
 buildscript {
     ext {
         // App version
-        versionName = '2.2.1'
+        versionName = '2.2.2'
         versionCode = 1
 
         // SDK and tools

maven-publish-helper.gradle

@@ -56,9 +56,11 @@ afterEvaluate {
                 version = android.defaultConfig.versionName // or just '1.0'
 
                 pom {
-                    signing {
-                        sign publishing.publications.release
-                        sign configurations.archives
+                    if (!project.hasProperty('skip.signing')) {
+                        signing {
+                            sign publishing.publications.release
+                            sign configurations.archives
+                        }
                     }
                     name = "substrate-sdk-android"
                     description = "Nova Substrate SDK is a native Android library to help developers build native mobile apps for Substrate-based networks, e.g. Polkadot, Kusama & parachains"

sr25519-java/Cargo.toml

@@ -2,7 +2,7 @@
 name = "sr25519java"
 version = "0.1.0"
 authors = ['Novasama Technologies']
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 zeroize = { version="<=1.1.1" }

substrate-sdk-android/build.gradle

@@ -16,6 +16,8 @@ publishing {
 android {
     compileSdkVersion rootProject.compileVersion
 
+    ndkVersion "26.1.10909125"
+
     defaultConfig {
         minSdkVersion rootProject.minVersion
         targetSdkVersion rootProject.targetVersion

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/definitions/types/composite/DictEnum.kt

@@ -8,7 +8,6 @@ import io.novasama.substrate_sdk_android.runtime.definitions.types.TypeReference
 import io.novasama.substrate_sdk_android.runtime.definitions.types.errors.EncodeDecodeException
 import io.novasama.substrate_sdk_android.runtime.definitions.types.skipAliasesOrNull
 
-@OptIn(ExperimentalUnsignedTypes::class)
 open class DictEnum(
     name: String,
     val elements: Map<Int, Entry<TypeReference>>

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/v14/RuntimeMetadataSchemaV14.kt

@@ -1,5 +1,3 @@
-@file:OptIn(ExperimentalUnsignedTypes::class)
-
 package io.novasama.substrate_sdk_android.runtime.metadata.v14
 
 import io.novasama.substrate_sdk_android.runtime.metadata.StorageEntryModifier
@@ -19,11 +17,11 @@ import io.novasama.substrate_sdk_android.scale.vector
 
 abstract class PostV14MetadataSchema<S : PostV14MetadataSchema<S>> : Schema<S>() {
 
-    abstract val lookup: Field<EncodableStruct<LookupSchema>>
+    abstract val lookup: Field<out EncodableStruct<LookupSchema>>
 
-    abstract val pallets: Field<List<EncodableStruct<PostV14PalletMetadataSchema<*>>>>
+    abstract val pallets: Field<out List<EncodableStruct<PostV14PalletMetadataSchema<*>>>>
 
-    abstract val extrinsic: Field<EncodableStruct<PostV14ExtrinsicMetadataSchema<*>>>
+    abstract val extrinsic: Field<out EncodableStruct<PostV14ExtrinsicMetadataSchema<*>>>
 }
 
 abstract class PostV14ExtrinsicMetadataSchema<S : PostV14ExtrinsicMetadataSchema<S>> : Schema<S>() {

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/runtime/metadata/v14/RuntimeMetadataSchemaV15.kt

@@ -1,5 +1,3 @@
-@file:OptIn(ExperimentalUnsignedTypes::class)
-
 package io.novasama.substrate_sdk_android.runtime.metadata.v14
 
 import io.novasama.substrate_sdk_android.scale.compactInt

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/scale/Dsl.kt

@@ -9,6 +9,7 @@ import io.novasama.substrate_sdk_android.scale.dataType.byte
 import io.novasama.substrate_sdk_android.scale.dataType.byteArray
 import io.novasama.substrate_sdk_android.scale.dataType.byteArraySized
 import io.novasama.substrate_sdk_android.scale.dataType.compactInt
+import io.novasama.substrate_sdk_android.scale.dataType.keyedUnion
 import io.novasama.substrate_sdk_android.scale.dataType.list
 import io.novasama.substrate_sdk_android.scale.dataType.long
 import io.novasama.substrate_sdk_android.scale.dataType.scalable
@@ -84,8 +85,18 @@ fun <S : Schema<S>> S.byteArray(default: ByteArray? = null): NonNullFieldDelegat
 
 fun <S : Schema<S>> S.long(default: Long? = null) = NonNullFieldDelegate(long, this, default)
 
+@Deprecated(
+    message = "Use keyedEnum instead. Check API changes",
+    replaceWith = ReplaceWith("keyedEnum(*types)")
+)
 fun <S : Schema<S>> S.enum(vararg types: DataType<*>, default: Any? = null) = NonNullFieldDelegate(union(types), this, default)
 
+fun <S : Schema<S>> S.keyedEnum(vararg types: DataType<*>, default: Pair<Int, Any?>? = null) = NonNullFieldDelegate(
+    keyedUnion(types.withIndex().associate { (index, dataType) -> index to dataType }),
+    this,
+    default
+)
+
 fun <S : Schema<S>, E : Enum<E>> S.enum(enumClass: KClass<E>, default: E? = null) = NonNullFieldDelegate(EnumType(enumClass.java), this, default)
 
 fun <S : Schema<S>, T> S.custom(type: DataType<T>, default: T? = null) = NonNullFieldDelegate(type, this, default)

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/scale/ScaleStruct.kt

@@ -2,8 +2,9 @@ package io.novasama.substrate_sdk_android.scale
 
 import io.novasama.substrate_sdk_android.scale.dataType.DataType
 import io.novasama.substrate_sdk_android.scale.dataType.optional
+import io.novasama.substrate_sdk_android.scale.dataType.string
 
-class Field<out T>(val dataType: DataType<out T>, val defaultValue: T? = null)
+class Field<T>(val dataType: DataType<T>, val defaultValue: T? = null)
 
 @Suppress("UNCHECKED_CAST", "unused")
 class EncodableStruct<out S : Schema<out S>>(val schema: S) {
@@ -41,4 +42,4 @@ class EncodableStruct<out S : Schema<out S>>(val schema: S) {
 
 fun <S : Schema<S>> EncodableStruct<S>.toHexString() = schema.toHexString(this)
 
-fun <S : Schema<S>> EncodableStruct<S>.toByteArray() = schema.toByteArray(this)
+fun <S : Schema<S>> EncodableStruct<S>.toByteArray() = schema.toByteArray(this)

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/scale/Schema.kt

@@ -57,7 +57,7 @@ abstract class Schema<S : Schema<S>> :
 
         for (field in fields) {
             val value = field.dataType.read(reader)
-            struct[field] = value
+            struct[field as Field<Any?>] = value
         }
 
         return struct

substrate-sdk-android/src/main/java/io/novasama/substrate_sdk_android/scale/dataType/Compound.kt

@@ -139,6 +139,7 @@ class CollectionEnumType(
     }
 }
 
+@Deprecated("Use keyedUnion instead")
 class union(val dataTypes: Array<out DataType<*>>) : DataType<Any?>() {
     override fun read(reader: ScaleCodecReader): Any? {
         val typeIndex = reader.readByte()
@@ -170,3 +171,26 @@ class union(val dataTypes: Array<out DataType<*>>) : DataType<Any?>() {
         return dataTypes.any { it.conformsType(value) }
     }
 }
+
+class keyedUnion(val dataTypes: Map<Int, DataType<*>>) : DataType<Pair<Int, Any?>>() {
+    override fun conformsType(value: Any?): Boolean {
+        val (index, originalValue) = value as Pair<Int, Any?>
+        return dataTypes.getValue(index).conformsType(originalValue)
+    }
+
+    override fun read(reader: ScaleCodecReader): Pair<Int, Any?> {
+        val typeIndex = reader.readByte().toInt()
+        val type = dataTypes.getValue(typeIndex)
+
+        return typeIndex to type.read(reader)
+    }
+
+    override fun write(writer: ScaleCodecWriter, value: Pair<Int, Any?>) {
+        val (typeIndex, originalValue) = value
+
+        val type = dataTypes[typeIndex] as DataType<Any?>
+
+        writer.write(uint8, typeIndex.toUByte())
+        writer.write(type, originalValue)
+    }
+}

substrate-sdk-android/src/test/java/io/novasama/substrate_sdk_android/scale/ScaleStructTest.kt

@@ -21,6 +21,7 @@ import io.novasama.substrate_sdk_android.scale.DefaultValues.bytes
 import io.novasama.substrate_sdk_android.scale.DefaultValues.text
 import io.novasama.substrate_sdk_android.scale.Vector.numbers
 import io.novasama.substrate_sdk_android.scale.dataType.DataType
+import io.novasama.substrate_sdk_android.scale.dataType.byteArraySized
 import io.novasama.substrate_sdk_android.scale.dataType.compactInt
 import io.novasama.substrate_sdk_android.scale.dataType.scalable
 import io.novasama.substrate_sdk_android.scale.dataType.string
@@ -129,6 +130,18 @@ object DefaultValues : Schema<DefaultValues>() {
     val bigInteger by uint128(default = BIG_INT_DEFAULT)
 }
 
+object KeyedEnumSameTypeTest : Schema<KeyedEnumSameTypeTest>() {
+    const val FIRST_VALUE_INDEX = 0
+
+    val value by keyedEnum(byteArraySized(3), byteArraySized(2))
+}
+
+object KeyedEnumDifferentTypeTest : Schema<KeyedEnumDifferentTypeTest>() {
+    const val SECOND_VALUE_INDEX = 1
+
+    val value by keyedEnum(Bool, byteArraySized(2))
+}
+
 @RunWith(MockitoJUnitRunner::class)
 class ScaleStructTest {
     @Test
@@ -264,6 +277,19 @@ class ScaleStructTest {
         assertEquals(enum2.toHexString(), "0x002a")
     }
 
+    @Test
+    fun `should handle keyed enum`() {
+        val sameTypeEnum = KeyedEnumSameTypeTest {
+            it[KeyedEnumSameTypeTest.value] = KeyedEnumSameTypeTest.FIRST_VALUE_INDEX to byteArrayOf(1, 2, 3)
+        }
+        assertEquals(sameTypeEnum.toHexString(), "0x00010203")
+
+        val differentTypeEnum = KeyedEnumDifferentTypeTest {
+            it[KeyedEnumDifferentTypeTest.value] = KeyedEnumDifferentTypeTest.SECOND_VALUE_INDEX to byteArrayOf(1, 2)
+        }
+        assertEquals(differentTypeEnum.toHexString(), "0x010102")
+    }
+
     @Test
     fun `should handle enum with structs`() {
         val enum1 = EnumTest2 {