Files
openethereum/ethcore/vm/src/lib.rs
André Silva 804ddfe31e [Beta] Backports (#7945)
* ECIP 1041 - Remove Difficulty Bomb (#7905)

Enable difficulty bomb defusion at block:
 - 5900000 on Ethereum Classic mainnet,
 - 2300000 on morden testnet.

Reference:
https://github.com/ethereumproject/ECIPs/blob/master/ECIPs/ECIP-1041.md

* spec: Validate required divisor fields are not 0 (#7933)

* Add validate_non_zero function

It's used to validate that a Spec's uint field used as a divisor is not zero.

* Add deserialize_with to gas_limit_bound_divisor

Prevents panics due to divide-by-zero on the gas_limit_bound_divisor
field.

* Add deserialize_with to difficulty_bound_divisor

Prevents panics due to divide-by-zero on the difficulty_bound_divisor
field.

* Add validate_optional_non_zero function

Used to validate Option<Uint> divisor fields.

* Use deserialize_with on optional divisor fields.

* Add #[serde(default)] attribute to divisor fields

When using `#[serde(deserialize_with)]`, `#[serde(default)]` must be specified so that missing
fields can be deserialized with the deserializer for `None`.

* Kovan WASM fork code (#7849)

* kovan fork code

* introduce ethcore level vm_factory and let it fail

* fix json tests

* wasmcosts as option

* review changes

* wasm costs in parser

* fix evm tests

* review fixes

* fix test

* remove redundant json field
2018-02-19 16:05:21 +01:00

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1.7 KiB
Rust

// Copyright 2015-2017 Parity Technologies (UK) Ltd.
// This file is part of Parity.
// Parity is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Parity is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Parity. If not, see <http://www.gnu.org/licenses/>.
//! Virtual machines support library
extern crate ethcore_util as util;
extern crate ethcore_bigint as bigint;
extern crate ethcore_bytes as bytes;
extern crate common_types as types;
extern crate ethjson;
extern crate rlp;
extern crate keccak_hash as hash;
extern crate patricia_trie as trie;
mod action_params;
mod call_type;
mod env_info;
mod schedule;
mod ext;
mod return_data;
mod error;
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 ext::{Ext, MessageCallResult, ContractCreateResult, CreateContractAddress};
pub use return_data::{ReturnData, GasLeft};
pub use error::{Error, Result};
/// Virtual Machine interface
pub trait Vm {
/// This function should be used to execute transaction.
/// It returns either an error, a known amount of gas left, or parameters to be used
/// to compute the final gas left.
fn exec(&mut self, params: ActionParams, ext: &mut Ext) -> Result<GasLeft>;
}