Remove in-tree max-encoded-len and use the new SCALE codec crate instead

Cargo.toml

@@ -204,9 +204,6 @@ members = [
 	"utils/frame/rpc/system",
 	"utils/prometheus",
 	"utils/wasm-builder",
-	# temp deps
-	"max-encoded-len",
-	"max-encoded-len/derive",
 ]
 
 # The list of dependencies below (which can be both direct and indirect dependencies) are crates

bin/node/runtime/Cargo.toml

@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 [dependencies]
 
 # third-party dependencies
-codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 static_assertions = "1.1.0"
 hex-literal = { version = "0.3.1", optional = true }
 log = { version = "0.4.14", default-features = false }
@@ -90,8 +90,6 @@ pallet-transaction-storage = { version = "3.0.0", default-features = false, path
 pallet-uniques = { version = "3.0.0", default-features = false, path = "../../../frame/uniques" }
 pallet-vesting = { version = "3.0.0", default-features = false, path = "../../../frame/vesting" }
 
-max-encoded-len = { version = "3.0.0", default-features = false, path = "../../../max-encoded-len", features = [ "derive" ] }
-
 [build-dependencies]
 substrate-wasm-builder = { version = "4.0.0", path = "../../../utils/wasm-builder" }
 
@@ -166,7 +164,6 @@ std = [
 	"log/std",
 	"frame-try-runtime/std",
 	"sp-npos-elections/std",
-	"max-encoded-len/std",
 ]
 runtime-benchmarks = [
 	"frame-benchmarking",

bin/node/runtime/src/lib.rs

@@ -33,15 +33,15 @@ use frame_support::{
 	},
 	traits::{
 		Currency, Imbalance, KeyOwnerProofSystem, OnUnbalanced, LockIdentifier,
-		U128CurrencyToVote, MaxEncodedLen,
+		U128CurrencyToVote,
 	},
 };
 use frame_system::{
 	EnsureRoot, EnsureOneOf,
 	limits::{BlockWeights, BlockLength}
 };
 use frame_support::{traits::InstanceFilter, PalletId};
-use codec::{Encode, Decode};
+use codec::{Encode, Decode, MaxEncodedLen};
 use sp_core::{
 	crypto::KeyTypeId,
 	u32_trait::{_1, _2, _3, _4, _5},

frame/assets/Cargo.toml

@@ -22,7 +22,6 @@ frame-support = { version = "3.0.0", default-features = false, path = "../suppor
 # `system` module provides us with all sorts of useful stuff and macros depend on it being around.
 frame-system = { version = "3.0.0", default-features = false, path = "../system" }
 frame-benchmarking = { version = "3.1.0", default-features = false, path = "../benchmarking", optional = true }
-max-encoded-len = { version = "3.0.0", default-features = false, path = "../../max-encoded-len", features = [ "derive" ] }
 
 [dev-dependencies]
 sp-core = { version = "3.0.0", path = "../../primitives/core" }
@@ -39,7 +38,6 @@ std = [
 	"frame-support/std",
 	"frame-system/std",
 	"frame-benchmarking/std",
-	"max-encoded-len/std",
 ]
 runtime-benchmarks = [
 	"frame-benchmarking",

frame/balances/Cargo.toml

@@ -13,14 +13,13 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 sp-std = { version = "3.0.0", default-features = false, path = "../../primitives/std" }
 sp-runtime = { version = "3.0.0", default-features = false, path = "../../primitives/runtime" }
 frame-benchmarking = { version = "3.1.0", default-features = false, path = "../benchmarking", optional = true }
 frame-support = { version = "3.0.0", default-features = false, path = "../support" }
 frame-system = { version = "3.0.0", default-features = false, path = "../system" }
 log = { version = "0.4.14", default-features = false }
-max-encoded-len = { version = "3.0.0", default-features = false, path = "../../max-encoded-len", features = [ "derive" ] }
 
 [dev-dependencies]
 sp-io = { version = "3.0.0", path = "../../primitives/io" }
@@ -37,7 +36,6 @@ std = [
 	"frame-support/std",
 	"frame-system/std",
 	"log/std",
-	"max-encoded-len/std",
 ]
 runtime-benchmarks = ["frame-benchmarking"]
 try-runtime = ["frame-support/try-runtime"]

frame/balances/src/lib.rs

@@ -158,11 +158,11 @@ pub mod weights;
 
 use sp_std::prelude::*;
 use sp_std::{cmp, result, mem, fmt::Debug, ops::BitOr};
-use codec::{Codec, Encode, Decode};
+use codec::{Codec, Encode, Decode, MaxEncodedLen};
 use frame_support::{
 	ensure, WeakBoundedVec,
 	traits::{
-		Currency, OnUnbalanced, TryDrop, StoredMap, MaxEncodedLen,
+		Currency, OnUnbalanced, TryDrop, StoredMap,
 		WithdrawReasons, LockIdentifier, LockableCurrency, ExistenceRequirement,
 		Imbalance, SignedImbalance, ReservableCurrency, Get, ExistenceRequirement::{AllowDeath, KeepAlive},
 		NamedReservableCurrency,

frame/contracts/Cargo.toml

@@ -14,7 +14,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 bitflags = "1.0"
-codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 log = { version = "0.4", default-features = false }
 pwasm-utils = { version = "0.18", default-features = false }
 serde = { version = "1", optional = true, features = ["derive"] }

frame/contracts/src/chain_extension.rs

@@ -58,8 +58,8 @@ use crate::{
 	Error,
 	wasm::{Runtime, RuntimeCosts},
 };
-use codec::Decode;
-use frame_support::{weights::Weight, traits::MaxEncodedLen};
+use codec::{Decode, MaxEncodedLen};
+use frame_support::weights::Weight;
 use sp_runtime::DispatchError;
 use sp_std::{
 	marker::PhantomData,

frame/contracts/src/wasm/runtime.rs

@@ -26,9 +26,9 @@ use crate::{
 };
 use bitflags::bitflags;
 use pwasm_utils::parity_wasm::elements::ValueType;
-use frame_support::{dispatch::DispatchError, ensure, weights::Weight, traits::MaxEncodedLen};
+use frame_support::{dispatch::DispatchError, ensure, weights::Weight};
 use sp_std::prelude::*;
-use codec::{Decode, DecodeAll, Encode};
+use codec::{Decode, DecodeAll, Encode, MaxEncodedLen};
 use sp_core::{Bytes, crypto::UncheckedFrom};
 use sp_io::hashing::{
 	keccak_256,

frame/proxy/Cargo.toml

@@ -13,14 +13,13 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-codec = { package = "parity-scale-codec", version = "2.0.0", default-features = false }
+codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["max-encoded-len"] }
 frame-support = { version = "3.0.0", default-features = false, path = "../support" }
 frame-system = { version = "3.0.0", default-features = false, path = "../system" }
 sp-core = { version = "3.0.0", default-features = false, path = "../../primitives/core" }
 sp-io = { version = "3.0.0", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "3.0.0", default-features = false, path = "../../primitives/runtime" }
 sp-std = { version = "3.0.0", default-features = false, path = "../../primitives/std" }
-max-encoded-len = { version = "3.0.0", default-features = false, path = "../../max-encoded-len", features = [ "derive" ] }
 
 frame-benchmarking = { version = "3.1.0", default-features = false, path = "../benchmarking", optional = true }
 
@@ -38,7 +37,6 @@ std = [
 	"frame-system/std",
 	"sp-std/std",
 	"sp-io/std",
-	"max-encoded-len/std",
 ]
 runtime-benchmarks = [
 	"frame-benchmarking",

frame/proxy/src/lib.rs

@@ -34,7 +34,7 @@ mod benchmarking;
 pub mod weights;
 
 use sp_std::{prelude::*, convert::TryInto};
-use codec::{Encode, Decode};
+use codec::{Encode, Decode, MaxEncodedLen};
 use sp_io::hashing::blake2_256;
 use sp_runtime::{
 	DispatchResult,
@@ -45,7 +45,7 @@ use frame_support::{
 		dispatch::{DispatchResultWithPostInfo, PostDispatchInfo},
 		traits::{
 			Get, ReservableCurrency, Currency, InstanceFilter, OriginTrait,
-			IsType, IsSubType, MaxEncodedLen,
+			IsType, IsSubType,
 		},
 		weights::GetDispatchInfo,
 };

frame/proxy/src/tests.rs

@@ -102,10 +102,7 @@ parameter_types! {
 	pub const AnnouncementDepositBase: u64 = 1;
 	pub const AnnouncementDepositFactor: u64 = 1;
 }
-#[derive(
-	Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, RuntimeDebug,
-	max_encoded_len::MaxEncodedLen,
-)]
+#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Encode, Decode, RuntimeDebug, MaxEncodedLen)]
 pub enum ProxyType {
 	Any,
 	JustTransfer,

frame/support/Cargo.toml

@@ -14,9 +14,8 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
-codec = { package = "parity-scale-codec", version = "2.1.0", default-features = false, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "2.2.0", default-features = false, features = ["derive", "max-encoded-len"] }
 frame-metadata = { version = "13.0.0", default-features = false, path = "../metadata" }
-max-encoded-len = { version = "3.0.0", default-features = false, path = "../../max-encoded-len", features = [ "derive" ] }
 sp-std = { version = "3.0.0", default-features = false, path = "../../primitives/std" }
 sp-io = { version = "3.0.0", default-features = false, path = "../../primitives/io" }
 sp-runtime = { version = "3.0.0", default-features = false, path = "../../primitives/runtime" }
@@ -56,7 +55,6 @@ std = [
 	"sp-state-machine",
 	"frame-support-procedural/std",
 	"log/std",
-	"max-encoded-len/std",
 ]
 runtime-benchmarks = []
 try-runtime = []

frame/support/procedural/src/storage/storage_struct.rs

@@ -267,7 +267,7 @@ pub fn decl_and_impl(def: &DeclStorageDefExt) -> TokenStream {
 								use #scrate::sp_runtime::SaturatedConversion;
 
 								let max_size = <
-									#value_type as #scrate::traits::MaxEncodedLen
+									#value_type as #scrate::codec::MaxEncodedLen
 								>::max_encoded_len()
 									.saturated_into();
 
@@ -301,7 +301,7 @@ pub fn decl_and_impl(def: &DeclStorageDefExt) -> TokenStream {
 								>::Hasher::max_len::<#key>();
 
 								let max_size = <
-									#value_type as #scrate::traits::MaxEncodedLen
+									#value_type as #scrate::codec::MaxEncodedLen
 								>::max_encoded_len()
 									.saturating_add(key_max_size)
 									.saturated_into();
@@ -342,7 +342,7 @@ pub fn decl_and_impl(def: &DeclStorageDefExt) -> TokenStream {
 								>::Hasher2::max_len::<#key2>();
 
 								let max_size = <
-									#value_type as #scrate::traits::MaxEncodedLen
+									#value_type as #scrate::codec::MaxEncodedLen
 								>::max_encoded_len()
 									.saturating_add(key1_max_size)
 									.saturating_add(key2_max_size)
@@ -378,7 +378,7 @@ pub fn decl_and_impl(def: &DeclStorageDefExt) -> TokenStream {
 								>::key_max_encoded_len();
 
 								let max_size = <
-									#value_type as #scrate::traits::MaxEncodedLen
+									#value_type as #scrate::codec::MaxEncodedLen
 								>::max_encoded_len()
 									.saturating_add(key_max_size)
 									.saturated_into();

frame/support/src/hash.rs

@@ -17,10 +17,9 @@
 
 //! Hash utilities.
 
-use codec::Codec;
+use codec::{Codec, MaxEncodedLen};
 use sp_std::prelude::Vec;
 use sp_io::hashing::{blake2_128, blake2_256, twox_64, twox_128, twox_256};
-use crate::traits::MaxEncodedLen;
 
 // This trait must be kept coherent with frame-support-procedural HasherKind usage
 pub trait Hashable: Sized {