Struct TapeHeader 

pub struct TapeHeader {
    pub version: u32,
    pub harn_version: String,
    pub started_at_unix_ms: Option<i64>,
    pub script_path: Option<String>,
    pub argv: Vec<String>,
}

Header line written first in every tape file. Captures the metadata a fidelity-checker needs to interpret the records that follow.

Fields

version: u32

harn_version: String

Crate version of the producer (harn-vm CARGO_PKG_VERSION). Surfaced so a fidelity report can attribute divergences across runtime upgrades.

started_at_unix_ms: Option<i64>

UNIX-epoch milliseconds the script was launched at — i.e. the initial value of the testbench’s paused clock. null when the run used the real clock.

script_path: Option<String>

Path passed to harn test-bench run. Informational only; replays resolve scripts via the CLI argument, not this field.

argv: Vec<String>

Positional arguments forwarded to the script (post --). Captured so two re-runs that differ only in argv are distinguishable.

Implementations

impl TapeHeader

pub fn current( started_at_unix_ms: Option<i64>, script_path: Option<String>, argv: Vec<String>, ) -> Self

Trait Implementations

impl Clone for TapeHeader

fn clone(&self) -> TapeHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TapeHeader

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TapeHeader

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for TapeHeader

impl PartialEq for TapeHeader

fn eq(&self, other: &TapeHeader) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for TapeHeader

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TapeHeader