Struct CallTrace 

pub struct CallTrace {

    pub call_type: CallType,
    pub from: String,
    pub to: String,
    pub value: String,
    pub gas_used: u64,
    pub input: String,
    pub output: String,
    pub function_selector: Option<String>,
    pub depth: u32,
    pub block_number: u64,
    pub tx_hash: String,
    pub tx_index: u32,
    pub trace_index: u32,
    pub error: Option<String>,
    pub reverted: bool,
}

A single call trace (internal transaction).

Represents one node in the call tree of a transaction. Top-level external calls have depth = 0; internal calls increment the depth.

Fields

call_type: CallType

The type of call (CALL, DELEGATECALL, CREATE, etc.).

from: String

Sender address (0x…).

to: String

Recipient/target address (0x…). For CREATE, this is the new contract.

value: String

Value transferred in wei (decimal string, e.g. "1000000000000000000").

gas_used: u64

Gas consumed by this call.

input: String

Input data (hex-encoded with 0x prefix).

output: String

Output/return data (hex-encoded with 0x prefix).

function_selector: Option<String>

First 4 bytes of input — the function selector (e.g. "0xa9059cbb"). None if input is too short (< 4 bytes after 0x prefix).

depth: u32

Call depth: 0 for top-level, increments for nested calls.

block_number: u64

Block number containing the transaction.

tx_hash: String

Transaction hash.

tx_index: u32

Transaction index within the block.

trace_index: u32

Trace index within the transaction (sequential ordering).

error: Option<String>

Error message if the call failed.

reverted: bool

Whether this call (or a parent call) was reverted.

Implementations

impl CallTrace

pub fn extract_selector(input: &str) -> Option<String>

Extract the function selector (first 4 bytes) from hex-encoded input.

Returns None if input is "0x" or shorter than 10 characters (i.e., 0x + 8 hex chars = 4 bytes).

Trait Implementations

impl Clone for CallTrace

fn clone(&self) -> CallTrace

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CallTrace

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CallTrace

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CallTrace

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.