EIP-1702: Generalized Account Versioning Scheme (#10771)

* EIP-1702: Generalized Account Versioning Scheme

* Fix pWASM's `create` and `create2` contract creation version

* Update ethcore/src/snapshot/account.rs

Co-Authored-By: Andronik Ordian <write@reusable.software>

* Update ethcore/src/factory.rs

Co-Authored-By: Andronik Ordian <write@reusable.software>

* Add pWasm frontend config

* Add snapshot testing with version

* Fix merge conflict

ethcore/vm/src/action_params.rs

@@ -84,6 +84,8 @@ pub struct ActionParams {
 	pub value: ActionValue,
 	/// Code being executed.
 	pub code: Option<Arc<Bytes>>,
+	/// Code version being executed.
+	pub code_version: U256,
 	/// Input data.
 	pub data: Option<Bytes>,
 	/// Type of call
@@ -105,6 +107,7 @@ impl Default for ActionParams {
 			gas_price: U256::zero(),
 			value: ActionValue::Transfer(U256::zero()),
 			code: None,
+			code_version: U256::zero(),
 			data: None,
 			call_type: CallType::None,
 			params_type: ParamsType::Separate,
@@ -122,6 +125,7 @@ impl From<ethjson::vm::Transaction> for ActionParams {
 			sender: t.sender.into(),
 			origin: t.origin.into(),
 			code: Some(Arc::new(t.code.into())),
+			code_version: t.code_version.into(),
 			data: Some(t.data.into()),
 			gas: t.gas.into(),
 			gas_price: t.gas_price.into(),

ethcore/vm/src/ext.rs

@@ -97,6 +97,7 @@ pub trait Ext {
 		gas: &U256,
 		value: &U256,
 		code: &[u8],
+		parent_version: &U256,
 		address: CreateContractAddress,
 		trap: bool,
 	) -> ::std::result::Result<ContractCreateResult, TrapKind>;

ethcore/vm/src/lib.rs

@@ -36,7 +36,7 @@ pub mod tests;
 pub use action_params::{ActionParams, ActionValue, ParamsType};
 pub use call_type::CallType;
 pub use env_info::{EnvInfo, LastHashes};
-pub use schedule::{Schedule, CleanDustMode, WasmCosts};
+pub use schedule::{Schedule, VersionedSchedule, CleanDustMode, WasmCosts};
 pub use ext::{Ext, MessageCallResult, ContractCreateResult, CreateContractAddress};
 pub use return_data::{ReturnData, GasLeft};
 pub use error::{Error, Result, TrapResult, TrapError, TrapKind, ExecTrapResult, ExecTrapError};

ethcore/vm/src/schedule.rs

@@ -15,6 +15,13 @@
 // along with Parity Ethereum.  If not, see <http://www.gnu.org/licenses/>.
 
 //! Cost schedule and other parameterisations for the EVM.
+use std::collections::HashMap;
+use ethereum_types::U256;
+
+/// Definition of schedules that can be applied to a version.
+pub enum VersionedSchedule {
+	PWasm,
+}
 
 /// Definition of the cost schedule and other parameterisations for the EVM.
 pub struct Schedule {
@@ -121,6 +128,10 @@ pub struct Schedule {
 	pub eip1283: bool,
 	/// VM execution does not increase null signed address nonce if this field is true.
 	pub keep_unsigned_nonce: bool,
+	/// Latest VM version for contract creation transaction.
+	pub latest_version: U256,
+	/// All supported non-legacy VM versions.
+	pub versions: HashMap<U256, VersionedSchedule>,
 	/// Wasm extra schedule settings, if wasm activated
 	pub wasm: Option<WasmCosts>,
 }
@@ -254,6 +265,8 @@ impl Schedule {
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
 			keep_unsigned_nonce: false,
+			latest_version: U256::zero(),
+			versions: HashMap::new(),
 			wasm: None,
 		}
 	}
@@ -328,6 +341,8 @@ impl Schedule {
 			kill_dust: CleanDustMode::Off,
 			eip1283: false,
 			keep_unsigned_nonce: false,
+			latest_version: U256::zero(),
+			versions: HashMap::new(),
 			wasm: None,
 		}
 	}

ethcore/vm/src/tests.rs

@@ -144,6 +144,7 @@ impl Ext for FakeExt {
 		gas: &U256,
 		value: &U256,
 		code: &[u8],
+		_parent_version: &U256,
 		address: CreateContractAddress,
 		_trap: bool,
 	) -> ::std::result::Result<ContractCreateResult, TrapKind> {