[contracts] Derive useful traits for public types (#14723)

* Types in the pallet

* Primitives

frame/contracts/primitives/src/lib.rs

@@ -20,7 +20,7 @@
 #![cfg_attr(not(feature = "std"), no_std)]
 
 use bitflags::bitflags;
-use codec::{Decode, Encode};
+use codec::{Decode, Encode, MaxEncodedLen};
 use scale_info::TypeInfo;
 use sp_runtime::{
 	traits::{Saturating, Zero},
@@ -39,7 +39,7 @@ use sp_weights::Weight;
 /// It has been extended to include `events` at the end of the struct while not bumping the
 /// `ContractsApi` version. Therefore when SCALE decoding a `ContractResult` its trailing data
 /// should be ignored to avoid any potential compatibility issues.
-#[derive(Eq, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Clone, Eq, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
 pub struct ContractResult<R, Balance, EventRecord> {
 	/// How much weight was consumed during execution.
 	pub gas_consumed: Weight,
@@ -99,7 +99,7 @@ pub type CodeUploadResult<CodeHash, Balance> =
 pub type GetStorageResult = Result<Option<Vec<u8>>, ContractAccessError>;
 
 /// The possible errors that can happen querying the storage of a contract.
-#[derive(Eq, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Copy, Clone, Eq, PartialEq, Encode, Decode, MaxEncodedLen, RuntimeDebug, TypeInfo)]
 pub enum ContractAccessError {
 	/// The given address doesn't point to a contract.
 	DoesntExist,
@@ -119,7 +119,7 @@ bitflags! {
 }
 
 /// Output of a contract call or instantiation which ran to completion.
-#[derive(PartialEq, Eq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Clone, PartialEq, Eq, Encode, Decode, RuntimeDebug, TypeInfo)]
 pub struct ExecReturnValue {
 	/// Flags passed along by `seal_return`. Empty when `seal_return` was never called.
 	pub flags: ReturnFlags,
@@ -135,7 +135,7 @@ impl ExecReturnValue {
 }
 
 /// The result of a successful contract instantiation.
-#[derive(PartialEq, Eq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Clone, PartialEq, Eq, Encode, Decode, RuntimeDebug, TypeInfo)]
 pub struct InstantiateReturnValue<AccountId> {
 	/// The output of the called constructor.
 	pub result: ExecReturnValue,
@@ -144,7 +144,7 @@ pub struct InstantiateReturnValue<AccountId> {
 }
 
 /// The result of successfully uploading a contract.
-#[derive(PartialEq, Eq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Clone, PartialEq, Eq, Encode, Decode, MaxEncodedLen, RuntimeDebug, TypeInfo)]
 pub struct CodeUploadReturnValue<CodeHash, Balance> {
 	/// The key under which the new code is stored.
 	pub code_hash: CodeHash,
@@ -153,7 +153,7 @@ pub struct CodeUploadReturnValue<CodeHash, Balance> {
 }
 
 /// Reference to an existing code hash or a new wasm module.
-#[derive(Eq, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
+#[derive(Clone, Eq, PartialEq, Encode, Decode, RuntimeDebug, TypeInfo)]
 pub enum Code<Hash> {
 	/// A wasm module as raw bytes.
 	Upload(Vec<u8>),
@@ -162,7 +162,9 @@ pub enum Code<Hash> {
 }
 
 /// The amount of balance that was either charged or refunded in order to pay for storage.
-#[derive(Eq, PartialEq, Ord, PartialOrd, Encode, Decode, RuntimeDebug, Clone, TypeInfo)]
+#[derive(
+	Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, MaxEncodedLen, RuntimeDebug, TypeInfo,
+)]
 pub enum StorageDeposit<Balance> {
 	/// The transaction reduced storage consumption.
 	///

frame/contracts/src/exec.rs

@@ -346,7 +346,17 @@ pub trait Ext: sealing::Sealed {
 }
 
 /// Describes the different functions that can be exported by an [`Executable`].
-#[derive(Clone, Copy, PartialEq, Eq, Debug)]
+#[derive(
+	Copy,
+	Clone,
+	PartialEq,
+	Eq,
+	sp_core::RuntimeDebug,
+	codec::Decode,
+	codec::Encode,
+	codec::MaxEncodedLen,
+	scale_info::TypeInfo,
+)]
 pub enum ExportedFunction {
 	/// The constructor function which is executed on deployment of a contract.
 	Constructor,

frame/contracts/src/lib.rs

@@ -108,7 +108,7 @@ use crate::{
 	storage::{meter::Meter as StorageMeter, ContractInfo, DeletionQueueManager},
 	wasm::{CodeInfo, WasmBlob},
 };
-use codec::{Codec, Decode, Encode, HasCompact};
+use codec::{Codec, Decode, Encode, HasCompact, MaxEncodedLen};
 use environmental::*;
 use frame_support::{
 	dispatch::{
@@ -122,7 +122,7 @@ use frame_support::{
 		ConstU32, Contains, Get, Randomness, Time,
 	},
 	weights::Weight,
-	BoundedVec, RuntimeDebugNoBound,
+	BoundedVec, RuntimeDebug, RuntimeDebugNoBound,
 };
 use frame_system::{ensure_signed, pallet_prelude::OriginFor, EventRecord, Pallet as System};
 use pallet_contracts_primitives::{
@@ -1119,7 +1119,9 @@ struct InstantiateInput<T: Config> {
 }
 
 /// Determines whether events should be collected during execution.
-#[derive(PartialEq)]
+#[derive(
+	Copy, Clone, PartialEq, Eq, RuntimeDebug, Decode, Encode, MaxEncodedLen, scale_info::TypeInfo,
+)]
 pub enum CollectEvents {
 	/// Collect events.
 	///
@@ -1135,7 +1137,9 @@ pub enum CollectEvents {
 }
 
 /// Determines whether debug messages will be collected.
-#[derive(PartialEq)]
+#[derive(
+	Copy, Clone, PartialEq, Eq, RuntimeDebug, Decode, Encode, MaxEncodedLen, scale_info::TypeInfo,
+)]
 pub enum DebugInfo {
 	/// Collect debug messages.
 	/// # Note