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Stackoverflow fix (#1742)

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* executive tracer builds flat traces without intermediate struct

* temporarilt commented out tests for traces

* fixed new way of building trace address

* fixed new way of building trace address

* updating state tests with flat tracing in progress

* fixed flat tracing tests

* fixed compiling ethcore-rpc with new flat traces

* removed warnings from ethcore module

* remove unused data structures
This commit is contained in:
Marek Kotewicz
2016-07-28 20:31:29 +02:00
committed by Gav Wood
parent f33cd60dc2
commit 9746b944f1
19 changed files with 475 additions and 666 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
ethcore/src/trace/block.rs
View File

@@ -1,58 +0,0 @@
// 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/>.
use util::rlp::*;
use basic_types::LogBloom;
use super::Trace;
/// Traces created by transactions from the same block.
#[derive(Clone)]
pub struct BlockTraces(Vec<Trace>);
impl From<Vec<Trace>> for BlockTraces {
fn from(traces: Vec<Trace>) -> Self {
BlockTraces(traces)
}
}
impl Into<Vec<Trace>> for BlockTraces {
fn into(self) -> Vec<Trace> {
self.0
}
}
impl Decodable for BlockTraces {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
let traces = try!(Decodable::decode(decoder));
let block_traces = BlockTraces(traces);
Ok(block_traces)
}
}
impl Encodable for BlockTraces {
fn rlp_append(&self, s: &mut RlpStream) {
Encodable::rlp_append(&self.0, s)
}
}
impl BlockTraces {
/// Returns bloom of all traces in given block.
pub fn bloom(&self) -> LogBloom {
self.0.iter()
.fold(LogBloom::default(), |acc, trace| acc | trace.bloom())
}
}

32
ethcore/src/trace/db.rs
View File

@@ -197,7 +197,7 @@ impl<T> TraceDB<T> where T: DatabaseExtras {
action: trace.action,
result: trace.result,
subtraces: trace.subtraces,
trace_address: trace.trace_address,
trace_address: trace.trace_address.into_iter().collect(),
transaction_number: tx_number,
transaction_hash: tx_hash.clone(),
block_number: block_number,
@@ -230,7 +230,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
let mut traces = self.traces.write();
// it's important to use overwrite here,
// cause this value might be queried by hash later
batch.write_with_cache(traces.deref_mut(), request.block_hash, request.traces.into(), CacheUpdatePolicy::Overwrite);
batch.write_with_cache(traces.deref_mut(), request.block_hash, request.traces, CacheUpdatePolicy::Overwrite);
}
// now let's rebuild the blooms
@@ -263,12 +263,13 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
}
fn trace(&self, block_number: BlockNumber, tx_position: usize, trace_position: Vec<usize>) -> Option<LocalizedTrace> {
let trace_position_deq = trace_position.into_iter().collect();
self.extras.block_hash(block_number)
.and_then(|block_hash| self.transactions_traces(&block_hash)
.and_then(|traces| traces.into_iter().nth(tx_position))
.map(Into::<Vec<FlatTrace>>::into)
// this may and should be optimized
.and_then(|traces| traces.into_iter().find(|trace| trace.trace_address == trace_position))
.and_then(|traces| traces.into_iter().find(|trace| trace.trace_address == trace_position_deq))
.map(|trace| {
let tx_hash = self.extras.transaction_hash(block_number, tx_position)
.expect("Expected to find transaction hash. Database is probably corrupted");
@@ -277,7 +278,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
action: trace.action,
result: trace.result,
subtraces: trace.subtraces,
trace_address: trace.trace_address,
trace_address: trace.trace_address.into_iter().collect(),
transaction_number: tx_position,
transaction_hash: tx_hash,
block_number: block_number,
@@ -301,7 +302,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
action: trace.action,
result: trace.result,
subtraces: trace.subtraces,
trace_address: trace.trace_address,
trace_address: trace.trace_address.into_iter().collect(),
transaction_number: tx_position,
transaction_hash: tx_hash.clone(),
block_number: block_number,
@@ -328,7 +329,7 @@ impl<T> TraceDatabase for TraceDB<T> where T: DatabaseExtras {
action: trace.action,
result: trace.result,
subtraces: trace.subtraces,
trace_address: trace.trace_address,
trace_address: trace.trace_address.into_iter().collect(),
transaction_number: tx_position,
transaction_hash: tx_hash.clone(),
block_number: block_number,
@@ -365,8 +366,9 @@ mod tests {
use devtools::RandomTempPath;
use header::BlockNumber;
use trace::{Config, Switch, TraceDB, Database, DatabaseExtras, ImportRequest};
use trace::{BlockTraces, Trace, Filter, LocalizedTrace, AddressesFilter};
use trace::{Filter, LocalizedTrace, AddressesFilter};
use trace::trace::{Call, Action, Res};
use trace::flat::{FlatTrace, FlatBlockTraces, FlatTransactionTraces};
use types::executed::CallType;
struct NoopExtras;
@@ -485,19 +487,19 @@ mod tests {
fn create_simple_import_request(block_number: BlockNumber, block_hash: H256) -> ImportRequest {
ImportRequest {
traces: BlockTraces::from(vec![Trace {
depth: 0,
traces: FlatBlockTraces::from(vec![FlatTransactionTraces::from(vec![FlatTrace {
trace_address: Default::default(),
subtraces: 0,
action: Action::Call(Call {
from: Address::from(1),
to: Address::from(2),
value: U256::from(3),
gas: U256::from(4),
from: 1.into(),
to: 2.into(),
value: 3.into(),
gas: 4.into(),
input: vec![],
call_type: CallType::Call,
}),
result: Res::FailedCall,
subs: vec![],
}]),
}])]),
block_hash: block_hash.clone(),
block_number: block_number,
enacted: vec![block_hash],

96
ethcore/src/trace/executive_tracer.rs
View File

@@ -18,13 +18,53 @@
use util::{Bytes, Address, U256};
use action_params::ActionParams;
use trace::trace::{Trace, Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, Suicide};
use trace::{Tracer, VMTracer};
use trace::trace::{Call, Create, Action, Res, CreateResult, CallResult, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff, Suicide};
use trace::{Tracer, VMTracer, FlatTrace};
/// Simple executive tracer. Traces all calls and creates. Ignores delegatecalls.
#[derive(Default)]
pub struct ExecutiveTracer {
traces: Vec<Trace>,
traces: Vec<FlatTrace>,
}
fn top_level_subtraces(traces: &[FlatTrace]) -> usize {
traces.iter().filter(|t| t.trace_address.is_empty()).count()
}
fn update_trace_address(traces: Vec<FlatTrace>) -> Vec<FlatTrace> {
// input traces are expected to be ordered like
// []
// [0]
// [0, 0]
// [0, 1]
// []
// [0]
//
// so they can be transformed to
//
// [0]
// [0, 0]
// [0, 0, 0]
// [0, 0, 1]
// [1]
// [1, 0]
let mut top_subtrace_index = 0;
let mut subtrace_subtraces_left = 0;
traces.into_iter().map(|mut trace| {
let is_top_subtrace = trace.trace_address.is_empty();
trace.trace_address.push_front(top_subtrace_index);
if is_top_subtrace {
subtrace_subtraces_left = trace.subtraces;
} else {
subtrace_subtraces_left -= 1;
}
if subtrace_subtraces_left == 0 {
top_subtrace_index += 1;
}
trace
}).collect()
}
impl Tracer for ExecutiveTracer {
@@ -40,67 +80,71 @@ impl Tracer for ExecutiveTracer {
Some(vec![])
}
fn trace_call(&mut self, call: Option<Call>, gas_used: U256, output: Option<Bytes>, depth: usize, subs: Vec<Trace>) {
let trace = Trace {
depth: depth,
subs: subs,
fn trace_call(&mut self, call: Option<Call>, gas_used: U256, output: Option<Bytes>, subs: Vec<FlatTrace>) {
let trace = FlatTrace {
trace_address: Default::default(),
subtraces: top_level_subtraces(&subs),
action: Action::Call(call.expect("self.prepare_trace_call().is_some(): so we must be tracing: qed")),
result: Res::Call(CallResult {
gas_used: gas_used,
output: output.expect("self.prepare_trace_output().is_some(): so we must be tracing: qed")
})
}),
};
debug!(target: "trace", "Traced call {:?}", trace);
self.traces.push(trace);
self.traces.extend(update_trace_address(subs));
}
fn trace_create(&mut self, create: Option<Create>, gas_used: U256, code: Option<Bytes>, address: Address, depth: usize, subs: Vec<Trace>) {
let trace = Trace {
depth: depth,
subs: subs,
fn trace_create(&mut self, create: Option<Create>, gas_used: U256, code: Option<Bytes>, address: Address, subs: Vec<FlatTrace>) {
let trace = FlatTrace {
subtraces: top_level_subtraces(&subs),
action: Action::Create(create.expect("self.prepare_trace_create().is_some(): so we must be tracing: qed")),
result: Res::Create(CreateResult {
gas_used: gas_used,
code: code.expect("self.prepare_trace_output.is_some(): so we must be tracing: qed"),
address: address
})
}),
trace_address: Default::default(),
};
debug!(target: "trace", "Traced create {:?}", trace);
self.traces.push(trace);
self.traces.extend(update_trace_address(subs));
}
fn trace_failed_call(&mut self, call: Option<Call>, depth: usize, subs: Vec<Trace>) {
let trace = Trace {
depth: depth,
subs: subs,
fn trace_failed_call(&mut self, call: Option<Call>, subs: Vec<FlatTrace>) {
let trace = FlatTrace {
trace_address: Default::default(),
subtraces: top_level_subtraces(&subs),
action: Action::Call(call.expect("self.prepare_trace_call().is_some(): so we must be tracing: qed")),
result: Res::FailedCall,
};
debug!(target: "trace", "Traced failed call {:?}", trace);
self.traces.push(trace);
self.traces.extend(update_trace_address(subs));
}
fn trace_failed_create(&mut self, create: Option<Create>, depth: usize, subs: Vec<Trace>) {
let trace = Trace {
depth: depth,
subs: subs,
fn trace_failed_create(&mut self, create: Option<Create>, subs: Vec<FlatTrace>) {
let trace = FlatTrace {
subtraces: top_level_subtraces(&subs),
action: Action::Create(create.expect("self.prepare_trace_create().is_some(): so we must be tracing: qed")),
result: Res::FailedCreate,
trace_address: Default::default(),
};
debug!(target: "trace", "Traced failed create {:?}", trace);
self.traces.push(trace);
self.traces.extend(update_trace_address(subs));
}
fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address, depth: usize) {
let trace = Trace {
depth: depth,
subs: vec![],
fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address) {
let trace = FlatTrace {
subtraces: 0,
action: Action::Suicide(Suicide {
address: address,
refund_address: refund_address,
balance: balance,
}),
result: Res::None,
trace_address: Default::default(),
};
debug!(target: "trace", "Traced failed suicide {:?}", trace);
self.traces.push(trace);
@@ -110,7 +154,7 @@ impl Tracer for ExecutiveTracer {
ExecutiveTracer::default()
}
fn traces(self) -> Vec<Trace> {
fn traces(self) -> Vec<FlatTrace> {
self.traces
}
}

287
ethcore/src/trace/flat.rs
View File

@@ -1,287 +0,0 @@
// 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/>.
//! Flat trace module
use util::rlp::*;
use trace::BlockTraces;
use basic_types::LogBloom;
use super::trace::{Trace, Action, Res};
/// Trace localized in vector of traces produced by a single transaction.
///
/// Parent and children indexes refer to positions in this vector.
#[derive(Debug, PartialEq, Clone)]
pub struct FlatTrace {
/// Type of action performed by a transaction.
pub action: Action,
/// Result of this action.
pub result: Res,
/// Number of subtraces.
pub subtraces: usize,
/// Exact location of trace.
///
/// [index in root, index in first CALL, index in second CALL, ...]
pub trace_address: Vec<usize>,
}
impl FlatTrace {
/// Returns bloom of the trace.
pub fn bloom(&self) -> LogBloom {
self.action.bloom() | self.result.bloom()
}
}
impl Encodable for FlatTrace {
fn rlp_append(&self, s: &mut RlpStream) {
s.begin_list(4);
s.append(&self.action);
s.append(&self.result);
s.append(&self.subtraces);
s.append(&self.trace_address);
}
}
impl Decodable for FlatTrace {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
let d = decoder.as_rlp();
let res = FlatTrace {
action: try!(d.val_at(0)),
result: try!(d.val_at(1)),
subtraces: try!(d.val_at(2)),
trace_address: try!(d.val_at(3)),
};
Ok(res)
}
}
/// Represents all traces produced by a single transaction.
#[derive(Debug, PartialEq, Clone)]
pub struct FlatTransactionTraces(Vec<FlatTrace>);
impl FlatTransactionTraces {
/// Returns bloom of all traces in the collection.
pub fn bloom(&self) -> LogBloom {
self.0.iter().fold(Default::default(), | bloom, trace | bloom | trace.bloom())
}
}
impl Encodable for FlatTransactionTraces {
fn rlp_append(&self, s: &mut RlpStream) {
s.append(&self.0);
}
}
impl Decodable for FlatTransactionTraces {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
Ok(FlatTransactionTraces(try!(Decodable::decode(decoder))))
}
}
impl Into<Vec<FlatTrace>> for FlatTransactionTraces {
fn into(self) -> Vec<FlatTrace> {
self.0
}
}
/// Represents all traces produced by transactions in a single block.
#[derive(Debug, PartialEq, Clone)]
pub struct FlatBlockTraces(Vec<FlatTransactionTraces>);
impl FlatBlockTraces {
/// Returns bloom of all traces in the block.
pub fn bloom(&self) -> LogBloom {
self.0.iter().fold(Default::default(), | bloom, tx_traces | bloom | tx_traces.bloom())
}
}
impl Encodable for FlatBlockTraces {
fn rlp_append(&self, s: &mut RlpStream) {
s.append(&self.0);
}
}
impl Decodable for FlatBlockTraces {
fn decode<D>(decoder: &D) -> Result<Self, DecoderError> where D: Decoder {
Ok(FlatBlockTraces(try!(Decodable::decode(decoder))))
}
}
impl From<BlockTraces> for FlatBlockTraces {
fn from(block_traces: BlockTraces) -> Self {
let traces: Vec<Trace> = block_traces.into();
let ordered = traces.into_iter()
.map(|trace| FlatBlockTraces::flatten(vec![], trace))
.map(FlatTransactionTraces)
.collect();
FlatBlockTraces(ordered)
}
}
impl Into<Vec<FlatTransactionTraces>> for FlatBlockTraces {
fn into(self) -> Vec<FlatTransactionTraces> {
self.0
}
}
impl FlatBlockTraces {
/// Helper function flattening nested tree structure to vector of ordered traces.
fn flatten(address: Vec<usize>, trace: Trace) -> Vec<FlatTrace> {
let subtraces = trace.subs.len();
let all_subs = trace.subs
.into_iter()
.enumerate()
.flat_map(|(index, subtrace)| {
let mut subtrace_address = address.clone();
subtrace_address.push(index);
FlatBlockTraces::flatten(subtrace_address, subtrace)
})
.collect::<Vec<_>>();
let ordered = FlatTrace {
action: trace.action,
result: trace.result,
subtraces: subtraces,
trace_address: address,
};
let mut result = vec![ordered];
result.extend(all_subs);
result
}
}
#[cfg(test)]
mod tests {
use super::{FlatBlockTraces, FlatTransactionTraces, FlatTrace};
use util::{U256, Address};
use trace::trace::{Action, Res, CallResult, Call, Create, Trace};
use trace::BlockTraces;
use types::executed::CallType;
#[test]
fn test_block_from() {
let trace = Trace {
depth: 2,
action: Action::Call(Call {
from: Address::from(1),
to: Address::from(2),
value: U256::from(3),
gas: U256::from(4),
input: vec![0x5],
call_type: CallType::Call,
}),
subs: vec![
Trace {
depth: 3,
action: Action::Create(Create {
from: Address::from(6),
value: U256::from(7),
gas: U256::from(8),
init: vec![0x9]
}),
subs: vec![
Trace {
depth: 3,
action: Action::Create(Create {
from: Address::from(6),
value: U256::from(7),
gas: U256::from(8),
init: vec![0x9]
}),
subs: vec![
],
result: Res::FailedCreate
},
Trace {
depth: 3,
action: Action::Create(Create {
from: Address::from(6),
value: U256::from(7),
gas: U256::from(8),
init: vec![0x9]
}),
subs: vec![
],
result: Res::FailedCreate
}
],
result: Res::FailedCreate
},
Trace {
depth: 3,
action: Action::Create(Create {
from: Address::from(6),
value: U256::from(7),
gas: U256::from(8),
init: vec![0x9]
}),
subs: vec![],
result: Res::FailedCreate,
}
],
result: Res::Call(CallResult {
gas_used: U256::from(10),
output: vec![0x11, 0x12]
})
};
let block_traces = FlatBlockTraces::from(BlockTraces::from(vec![trace]));
let transaction_traces: Vec<FlatTransactionTraces> = block_traces.into();
assert_eq!(transaction_traces.len(), 1);
let ordered_traces: Vec<FlatTrace> = transaction_traces.into_iter().nth(0).unwrap().into();
assert_eq!(ordered_traces.len(), 5);
assert_eq!(ordered_traces[0].trace_address, vec![]);
assert_eq!(ordered_traces[0].subtraces, 2);
assert_eq!(ordered_traces[1].trace_address, vec![0]);
assert_eq!(ordered_traces[1].subtraces, 2);
assert_eq!(ordered_traces[2].trace_address, vec![0, 0]);
assert_eq!(ordered_traces[2].subtraces, 0);
assert_eq!(ordered_traces[3].trace_address, vec![0, 1]);
assert_eq!(ordered_traces[3].subtraces, 0);
assert_eq!(ordered_traces[4].trace_address, vec![1]);
assert_eq!(ordered_traces[4].subtraces, 0);
}
#[test]
fn test_trace_serialization() {
use util::rlp;
let flat_trace = FlatTrace {
action: Action::Call(Call {
from: 1.into(),
to: 2.into(),
value: 3.into(),
gas: 4.into(),
input: vec![0x5],
call_type: CallType::Call,
}),
result: Res::Call(CallResult {
gas_used: 10.into(),
output: vec![0x11, 0x12]
}),
trace_address: Vec::new(),
subtraces: 0,
};
let block_traces = FlatBlockTraces(vec![FlatTransactionTraces(vec![flat_trace])]);
let encoded = rlp::encode(&block_traces);
let decoded = rlp::decode(&encoded);
assert_eq!(block_traces, decoded);
}
}

4
ethcore/src/trace/import.rs
View File

@@ -17,12 +17,12 @@
//! Traces import request.
use util::H256;
use header::BlockNumber;
use trace::BlockTraces;
use trace::FlatBlockTraces;
/// Traces import request.
pub struct ImportRequest {
/// Traces to import.
pub traces: BlockTraces,
pub traces: FlatBlockTraces,
/// Hash of traces block.
pub block_hash: H256,
/// Number of traces block.

20
ethcore/src/trace/mod.rs
View File

@@ -16,22 +16,20 @@
//! Tracing
mod block;
mod bloom;
mod config;
mod db;
mod error;
mod executive_tracer;
pub mod flat;
mod import;
mod noop_tracer;
pub use types::trace_types::*;
pub use self::block::BlockTraces;
pub use self::config::{Config, Switch};
pub use self::db::TraceDB;
pub use self::error::Error;
pub use types::trace_types::trace::{Trace, VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff};
pub use types::trace_types::trace::{VMTrace, VMOperation, VMExecutedOperation, MemoryDiff, StorageDiff};
pub use types::trace_types::flat::{FlatTrace, FlatTransactionTraces, FlatBlockTraces};
pub use self::noop_tracer::{NoopTracer, NoopVMTracer};
pub use self::executive_tracer::{ExecutiveTracer, ExecutiveVMTracer};
pub use types::trace_types::filter::{Filter, AddressesFilter};
@@ -59,8 +57,7 @@ pub trait Tracer: Send {
call: Option<Call>,
gas_used: U256,
output: Option<Bytes>,
depth: usize,
subs: Vec<Trace>
subs: Vec<FlatTrace>,
);
/// Stores trace create info.
@@ -70,24 +67,23 @@ pub trait Tracer: Send {
gas_used: U256,
code: Option<Bytes>,
address: Address,
depth: usize,
subs: Vec<Trace>
subs: Vec<FlatTrace>
);
/// Stores failed call trace.
fn trace_failed_call(&mut self, call: Option<Call>, depth: usize, subs: Vec<Trace>);
fn trace_failed_call(&mut self, call: Option<Call>, subs: Vec<FlatTrace>);
/// Stores failed create trace.
fn trace_failed_create(&mut self, create: Option<Create>, depth: usize, subs: Vec<Trace>);
fn trace_failed_create(&mut self, create: Option<Create>, subs: Vec<FlatTrace>);
/// Stores suicide info.
fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address, depth: usize);
fn trace_suicide(&mut self, address: Address, balance: U256, refund_address: Address);
/// Spawn subtracer which will be used to trace deeper levels of execution.
fn subtracer(&self) -> Self where Self: Sized;
/// Consumes self and returns all traces.
fn traces(self) -> Vec<Trace>;
fn traces(self) -> Vec<FlatTrace>;
}
/// Used by executive to build VM traces.

16
ethcore/src/trace/noop_tracer.rs
View File

@@ -18,8 +18,8 @@
use util::{Bytes, Address, U256};
use action_params::ActionParams;
use trace::{Tracer, VMTracer};
use trace::trace::{Trace, Call, Create, VMTrace};
use trace::{Tracer, VMTracer, FlatTrace};
use trace::trace::{Call, Create, VMTrace};
/// Nonoperative tracer. Does not trace anything.
pub struct NoopTracer;
@@ -37,32 +37,32 @@ impl Tracer for NoopTracer {
None
}
fn trace_call(&mut self, call: Option<Call>, _: U256, output: Option<Bytes>, _: usize, _: Vec<Trace>) {
fn trace_call(&mut self, call: Option<Call>, _: U256, output: Option<Bytes>, _: Vec<FlatTrace>) {
assert!(call.is_none(), "self.prepare_trace_call().is_none(): so we can't be tracing: qed");
assert!(output.is_none(), "self.prepare_trace_output().is_none(): so we can't be tracing: qed");
}
fn trace_create(&mut self, create: Option<Create>, _: U256, code: Option<Bytes>, _: Address, _: usize, _: Vec<Trace>) {
fn trace_create(&mut self, create: Option<Create>, _: U256, code: Option<Bytes>, _: Address, _: Vec<FlatTrace>) {
assert!(create.is_none(), "self.prepare_trace_create().is_none(): so we can't be tracing: qed");
assert!(code.is_none(), "self.prepare_trace_output().is_none(): so we can't be tracing: qed");
}
fn trace_failed_call(&mut self, call: Option<Call>, _: usize, _: Vec<Trace>) {
fn trace_failed_call(&mut self, call: Option<Call>, _: Vec<FlatTrace>) {
assert!(call.is_none(), "self.prepare_trace_call().is_none(): so we can't be tracing: qed");
}
fn trace_failed_create(&mut self, create: Option<Create>, _: usize, _: Vec<Trace>) {
fn trace_failed_create(&mut self, create: Option<Create>, _: Vec<FlatTrace>) {
assert!(create.is_none(), "self.prepare_trace_create().is_none(): so we can't be tracing: qed");
}
fn trace_suicide(&mut self, _address: Address, _balance: U256, _refund_address: Address, _depth: usize) {
fn trace_suicide(&mut self, _address: Address, _balance: U256, _refund_address: Address) {
}
fn subtracer(&self) -> Self {
NoopTracer
}
fn traces(self) -> Vec<Trace> {
fn traces(self) -> Vec<FlatTrace> {
vec![]
}
}