openethereum/ethcore/vm/src/lib.rs
Wei Tang 9c595aff95
Allow single opcode stepping for EVM (#9051)
* Feed in ActionParams on VM creation

* Fix ethcore after Vm interface change

* Move informant inside Interpreter struct

* Move do_trace to Interpreter struct

* Move all remaining exec variables to Interpreter struct

* Refactor VM to allow single opcode step

* Fix all EVM tests

* Fix all wasm tests

* Fix wasm runner tests

* Fix a check case where code length is zero

* Fix jsontests compile

* Fix cargo lock

* Use match instead of expect

* Use cheaper check reader.len() == 0 for the initial special case

* Get rid of try_and_done! macro by using Result<(), ReturnType>

* Use Never instead of ()

* Fix parity-bytes path

* Bypass gasometer lifetime problem by borrow only for a instance

* typo: missing {

* Fix ethcore test compile

* Fix evm tests
2018-08-14 04:06:15 +08:00

53 lines
1.7 KiB
Rust

// Copyright 2015-2018 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 ethereum_types;
extern crate parity_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_ethereum as ethtrie;
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, ext: &mut Ext) -> Result<GasLeft>;
}