163 lines
4.0 KiB
Rust
163 lines
4.0 KiB
Rust
// Copyright 2015, 2016 Ethcore (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! Parity EVM interpreter binary.
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#![warn(missing_docs)]
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#![allow(dead_code)]
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extern crate ethcore;
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extern crate rustc_serialize;
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extern crate docopt;
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#[macro_use]
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extern crate ethcore_util as util;
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mod ext;
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use std::sync::Arc;
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use std::time::{Instant, Duration};
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use std::fmt;
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use std::str::FromStr;
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use docopt::Docopt;
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use util::{U256, FromHex, Uint, Bytes};
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use ethcore::evm::{self, Factory, VMType, Finalize};
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use ethcore::action_params::ActionParams;
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const USAGE: &'static str = r#"
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EVM implementation for Parity.
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Copyright 2016 Ethcore (UK) Limited
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Usage:
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evmbin stats [options]
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evmbin [-h | --help]
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Transaction options:
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--code CODE Contract code as hex (without 0x)
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--input DATA Input data as hex (without 0x)
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--gas GAS Supplied gas as hex (without 0x)
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General options:
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-h, --help Display this message and exit.
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"#;
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fn main() {
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let args: Args = Docopt::new(USAGE).and_then(|d| d.decode()).unwrap_or_else(|e| e.exit());
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let mut params = ActionParams::default();
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params.gas = args.gas();
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params.code = Some(Arc::new(args.code()));
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params.data = args.data();
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let result = run_vm(params);
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match result {
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Ok(success) => println!("{}", success),
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Err(failure) => println!("{}", failure),
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}
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}
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/// Execute VM with given `ActionParams`
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pub fn run_vm(params: ActionParams) -> Result<Success, Failure> {
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let initial_gas = params.gas;
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let factory = Factory::new(VMType::Interpreter, 1024);
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let mut vm = factory.create(params.gas);
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let mut ext = ext::FakeExt::default();
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let start = Instant::now();
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let gas_left = vm.exec(params, &mut ext).finalize(ext);
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let duration = start.elapsed();
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match gas_left {
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Ok(gas_left) => Ok(Success {
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gas_used: initial_gas - gas_left,
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// TODO [ToDr] get output from ext
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output: Vec::new(),
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time: duration,
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}),
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Err(e) => Err(Failure {
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error: e,
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time: duration,
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}),
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}
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}
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/// Execution finished correctly
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pub struct Success {
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/// Used gas
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gas_used: U256,
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/// Output as bytes
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output: Vec<u8>,
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/// Time Taken
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time: Duration,
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}
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impl fmt::Display for Success {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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try!(writeln!(f, "Gas used: {:?}", self.gas_used));
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try!(writeln!(f, "Output: {:?}", self.output));
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try!(writeln!(f, "Time: {}.{:.9}s", self.time.as_secs(), self.time.subsec_nanos()));
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Ok(())
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}
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}
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/// Execution failed
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pub struct Failure {
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/// Internal error
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error: evm::Error,
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/// Duration
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time: Duration,
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}
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impl fmt::Display for Failure {
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fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
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try!(writeln!(f, "Error: {:?}", self.error));
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try!(writeln!(f, "Time: {}.{:.9}s", self.time.as_secs(), self.time.subsec_nanos()));
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Ok(())
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}
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}
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#[derive(Debug, RustcDecodable)]
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struct Args {
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cmd_stats: bool,
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flag_code: Option<String>,
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flag_gas: Option<String>,
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flag_input: Option<String>,
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}
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impl Args {
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pub fn gas(&self) -> U256 {
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self.flag_gas
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.clone()
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.and_then(|g| U256::from_str(&g).ok())
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.unwrap_or_else(|| !U256::zero())
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}
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pub fn code(&self) -> Bytes {
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self.flag_code
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.clone()
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.and_then(|c| c.from_hex().ok())
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.unwrap_or_else(|| die("Code is required."))
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}
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pub fn data(&self) -> Option<Bytes> {
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self.flag_input
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.clone()
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.and_then(|d| d.from_hex().ok())
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}
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}
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fn die(msg: &'static str) -> ! {
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println!("{}", msg);
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::std::process::exit(-1)
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}
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