543965411e
* Revamping evmbin to support spec files, json format and subcalls. * Fix formatting of usage.
73 lines
1.9 KiB
Rust
73 lines
1.9 KiB
Rust
// Copyright 2015-2017 Parity Technologies (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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//! VM runner.
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use std::time::{Instant, Duration};
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use util::U256;
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use ethcore::{trace, spec};
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use ethcore::client::{EvmTestClient, EvmTestError};
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use ethcore::action_params::ActionParams;
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/// VM execution informant
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pub trait Informant: trace::VMTracer {
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/// Display final result.
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fn finish(&mut self, result: Result<Success, Failure>);
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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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pub gas_used: U256,
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/// Output as bytes
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pub output: Vec<u8>,
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/// Time Taken
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pub time: Duration,
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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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pub error: EvmTestError,
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/// Duration
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pub time: Duration,
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}
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/// Execute VM with given `ActionParams`
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pub fn run<T: trace::VMTracer>(vm_tracer: &mut T, spec: spec::Spec, params: ActionParams) -> Result<Success, Failure> {
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let mut test_client = EvmTestClient::new(spec).map_err(|error| Failure {
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error,
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time: Duration::from_secs(0)
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})?;
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let initial_gas = params.gas;
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let start = Instant::now();
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let result = test_client.call(params, vm_tracer);
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let duration = start.elapsed();
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match result {
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Ok((gas_left, output)) => Ok(Success {
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gas_used: initial_gas - gas_left,
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output: output,
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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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