openethereum/crates/ethcore/src/trace/noop_tracer.rs

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// Copyright 2015-2020 Parity Technologies (UK) Ltd.
// This file is part of OpenEthereum.
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// OpenEthereum 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.
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// OpenEthereum 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
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// along with OpenEthereum. If not, see <http://www.gnu.org/licenses/>.
//! Nonoperative tracer.
use ethereum_types::{Address, U256};
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use trace::{
trace::{RewardType, VMTrace},
FlatTrace, Tracer, VMTracer,
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};
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use vm::{ActionParams, Error as VmError};
/// Nonoperative tracer. Does not trace anything.
pub struct NoopTracer;
impl Tracer for NoopTracer {
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type Output = FlatTrace;
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fn prepare_trace_call(&mut self, _: &ActionParams, _: usize, _: bool) {}
fn prepare_trace_create(&mut self, _: &ActionParams) {}
fn done_trace_call(&mut self, _: U256, _: &[u8]) {}
fn done_trace_create(&mut self, _: U256, _: &[u8], _: Address) {}
fn done_trace_failed(&mut self, _: &VmError) {}
fn trace_suicide(&mut self, _: Address, _: U256, _: Address) {}
fn trace_reward(&mut self, _: Address, _: U256, _: RewardType) {}
fn drain(self) -> Vec<FlatTrace> {
vec![]
}
}
/// Nonoperative VM tracer. Does not trace anything.
pub struct NoopVMTracer;
impl VMTracer for NoopVMTracer {
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type Output = VMTrace;
fn drain(self) -> Option<VMTrace> {
None
}
}