Substrate EVM (#3927)

* srml-evm: init the basic structures

* srml-evm: finish executor implementation

* srml-evm: implement balance deposit and withdraw

* srml-evm: implement the actuall call/create

* srml-evm: use crates.io version of evm

* srml-evm: fix no-std compile

* Remove dependency patch

* Update to evm 0.14

* Use double map for account storage

* Add precompiles support

* Add some basic docs

* Use runtime_io::chain_id()

* Update srml/evm/src/lib.rs

Co-Authored-By: Xiliang Chen <xlchen1291@gmail.com>

* Update srml/evm/src/lib.rs

Co-Authored-By: Xiliang Chen <xlchen1291@gmail.com>

* Fix WithdrawReason

* Unique saturate balance to u128

* Unique saturate withdraw to u128

* Remove extern crate alloc

* Move account code to a separate storage and use ref for convert_account_id

* More match cause for error message

* Fix potential interger overflow

* Use decode_len for fetching code length

Cargo.toml

@@ -93,6 +93,7 @@ members = [
 	"srml/transaction-payment",
 	"srml/transaction-payment/rpc",
 	"srml/utility",
+	"srml/evm",
 	"node/cli",
 	"node/executor",
 	"node/primitives",

core/externalities/Cargo.toml

@@ -6,7 +6,7 @@ authors = ["Parity Technologies <admin@parity.io>"]
 edition = "2018"
 
 [dependencies]
-primitive-types = { version = "0.5.1", features = ["codec"] }
+primitive-types = { version = "0.6", features = ["codec"] }
 primitives-storage = { package = "substrate-primitives-storage", path = "../primitives/storage" }
 rstd = { package = "sr-std", path = "../sr-std" }
 environmental = { version = "1.0.2" }

core/primitives/Cargo.toml

@@ -12,7 +12,7 @@ log = { version = "0.4.8", default-features = false }
 serde = { version = "1.0.101", optional = true, features = ["derive"] }
 twox-hash = { version = "1.5.0", optional = true }
 byteorder = { version = "1.3.2", default-features = false }
-primitive-types = { version = "0.5.1", default-features = false, features = ["codec"] }
+primitive-types = { version = "0.6", default-features = false, features = ["codec"] }
 impl-serde = { version = "0.2.3", optional = true }
 wasmi = { version = "0.5.1", optional = true }
 hash-db = { version = "0.15.2", default-features = false }

srml/evm/Cargo.toml

@@ -0,0 +1,40 @@
+[package]
+name = "srml-evm"
+version = "2.0.0"
+authors = ["Parity Technologies <admin@parity.io>"]
+edition = "2018"
+
+[dependencies]
+serde = { version = "1.0.101", optional = true, features = ["derive"] }
+codec = { package = "parity-scale-codec", version = "1.0.0", default-features = false }
+support = { package = "srml-support", path = "../support", default-features = false }
+system = { package = "srml-system", path = "../system", default-features = false }
+timestamp = { package = "srml-timestamp", path = "../timestamp", default-features = false }
+balances = { package = "srml-balances", path = "../balances", default-features = false }
+primitives = { package = "substrate-primitives", path = "../../core/primitives", default-features = false }
+sr-primitives = { path = "../../core/sr-primitives", default-features = false }
+rstd = { package = "sr-std", path = "../../core/sr-std", default-features = false }
+runtime-io = { package = "sr-io", path = "../../core/sr-io", default-features = false }
+primitive-types = { version = "0.6", default-features = false, features = ["rlp"] }
+rlp = { version = "0.4", default-features = false }
+evm = { version = "0.14", default-features = false }
+sha3 = { version = "0.8", default-features = false }
+
+[features]
+default = ["std"]
+std = [
+	"serde",
+	"codec/std",
+	"primitives/std",
+	"sr-primitives/std",
+	"support/std",
+	"system/std",
+	"balances/std",
+	"runtime-io/std",
+	"rstd/std",
+	"sha3/std",
+	"rlp/std",
+	"primitive-types/std",
+	"evm/std",
+	"timestamp/std",
+]