openethereum/ethcore/src/trace/trace.rs
2016-04-06 21:23:52 +02:00

119 lines
3.7 KiB
Rust

// Copyright 2015, 2016 Ethcore (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/>.
//! Tracing datatypes.
use common::*;
/// TraceCall result.
#[derive(Debug, Clone, PartialEq, Default)]
pub struct TraceCallResult {
/// Gas used by call.
pub gas_used: U256,
/// Call Output.
pub output: Bytes,
}
/// TraceCreate result.
#[derive(Debug, Clone, PartialEq)]
pub struct TraceCreateResult {
/// Gas used by create.
pub gas_used: U256,
/// Code of the newly created contract.
pub code: Bytes,
/// Address of the newly created contract.
pub address: Address,
}
/// Description of a _call_ action, either a `CALL` operation or a message transction.
#[derive(Debug, Clone, PartialEq)]
pub struct TraceCall {
/// The sending account.
pub from: Address,
/// The destination account.
pub to: Address,
/// The value transferred to the destination account.
pub value: U256,
/// The gas available for executing the call.
pub gas: U256,
/// The input data provided to the call.
pub input: Bytes,
/// The result of the operation; the gas used and the output data of the call.
pub result: Option<TraceCallResult>,
}
/// Description of a _create_ action, either a `CREATE` operation or a create transction.
#[derive(Debug, Clone, PartialEq)]
pub struct TraceCreate {
/// The address of the creator.
pub from: Address,
/// The value with which the new account is endowed.
pub value: U256,
/// The gas available for the creation init code.
pub gas: U256,
/// The init code.
pub init: Bytes,
/// The result of the operation; tuple of the gas used, the address of the newly created account and its code.
/// NOTE: Presently failed operations are not reported so this will always be `Some`.
pub result: Option<TraceCreateResult>,
}
/// Description of an action that we trace; will be either a call or a create.
#[derive(Debug, Clone, PartialEq)]
pub enum TraceAction {
/// It's a call action.
Call(TraceCall),
/// It's a create action.
Create(TraceCreate),
}
#[derive(Debug, Clone, PartialEq)]
/// A trace; includes a description of the action being traced and sub traces of each interior action.
pub struct Trace {
/// The number of EVM execution environments active when this action happened; 0 if it's
/// the outer action of the transaction.
pub depth: usize,
/// The action being performed.
pub action: TraceAction,
/// The sub traces for each interior action performed as part of this call.
pub subs: Vec<Trace>,
}
impl TraceAction {
/// Compose a `TraceAction` from an `ActionParams`, knowing that the action is a call.
pub fn from_call(p: &ActionParams) -> TraceAction {
TraceAction::Call(TraceCall {
from: p.sender.clone(),
to: p.address.clone(),
value: p.value.value(),
gas: p.gas,
input: p.data.clone().unwrap_or_else(Vec::new),
result: None,
})
}
/// Compose a `TraceAction` from an `ActionParams`, knowing that the action is a create.
pub fn from_create(p: &ActionParams) -> TraceAction {
TraceAction::Create(TraceCreate {
from: p.sender.clone(),
value: p.value.value(),
gas: p.gas,
init: p.code.clone().unwrap_or_else(Vec::new),
result: None,
})
}
}