Trait ethcore::trace::Tracer

pub trait Tracer: Send {
    type Output;
    fn prepare_trace_call(&self, params: &ActionParams) -> Option<Call>;
    fn prepare_trace_create(&self, params: &ActionParams) -> Option<Create>;
    fn prepare_trace_output(&self) -> Option<Bytes>;
    fn trace_call(
        &mut self, 
        call: Option<Call>, 
        gas_used: U256, 
        output: Option<Bytes>, 
        subs: Vec<Self::Output>
    );
    fn trace_create(
        &mut self, 
        create: Option<Create>, 
        gas_used: U256, 
        code: Option<Bytes>, 
        address: Address, 
        subs: Vec<Self::Output>
    );
    fn trace_failed_call(
        &mut self, 
        call: Option<Call>, 
        subs: Vec<Self::Output>, 
        error: TraceError
    );
    fn trace_failed_create(
        &mut self, 
        create: Option<Create>, 
        subs: Vec<Self::Output>, 
        error: TraceError
    );
    fn trace_suicide(
        &mut self, 
        address: Address, 
        balance: U256, 
        refund_address: Address
    );
    fn trace_reward(
        &mut self, 
        author: Address, 
        value: U256, 
        reward_type: RewardType
    );
    fn subtracer(&self) -> Self
    where
        Self: Sized;
    fn drain(self) -> Vec<Self::Output>;
}

This trait is used by executive to build traces.

Associated Types

type Output

Data returned when draining the Tracer.

Required Methods

fn prepare_trace_call(&self, params: &ActionParams) -> Option<Call>

Prepares call trace for given params. Noop tracer should return None.

fn prepare_trace_create(&self, params: &ActionParams) -> Option<Create>

Prepares create trace for given params. Noop tracer should return None.

fn prepare_trace_output(&self) -> Option<Bytes>

Prepare trace output. Noop tracer should return None.

fn trace_call(
    &mut self,
    call: Option<Call>,
    gas_used: U256,
    output: Option<Bytes>,
    subs: Vec<Self::Output>
)

Stores trace call info.

fn trace_create(
    &mut self,
    create: Option<Create>,
    gas_used: U256,
    code: Option<Bytes>,
    address: Address,
    subs: Vec<Self::Output>
)

Stores trace create info.

fn trace_failed_call(
    &mut self,
    call: Option<Call>,
    subs: Vec<Self::Output>,
    error: TraceError
)

Stores failed call trace.

fn trace_failed_create(
    &mut self,
    create: Option<Create>,
    subs: Vec<Self::Output>,
    error: TraceError
)

Stores failed create trace.

fn trace_suicide(
    &mut self,
    address: Address,
    balance: U256,
    refund_address: Address
)

Stores suicide info.

fn trace_reward(
    &mut self,
    author: Address,
    value: U256,
    reward_type: RewardType
)

Stores reward info.

fn subtracer(&self) -> Self where
    Self: Sized, 

Spawn subtracer which will be used to trace deeper levels of execution.

Important traits for Vec<u8>

impl Write for Vec<u8>

fn drain(self) -> Vec<Self::Output>

Consumes self and returns all traces.

Implementors

• impl Tracer for ExecutiveTracer type Output = FlatTrace;

• impl Tracer for NoopTracer type Output = FlatTrace;