Struct Header 

pub struct Header {

    pub section_length: u64,
    pub start_time: u64,
    pub end_time: u64,
    pub memory_used: u64,
    pub scope_count: u64,
    pub var_count: u64,
    pub max_handle: u64,
    pub vc_section_count: u64,
    pub timescale_exponent: i8,
    pub version: String,
    pub date: String,
    pub file_type: u8,
    pub time_zero: u64,
}

In-memory representation of the FST header block.

Fields

section_length: u64

Length of the header section (should remain 329 bytes for compatibility).

start_time: u64

Earliest simulation timestamp recorded in the trace.

end_time: u64

Latest simulation timestamp recorded in the trace.

memory_used: u64

Writer memory usage hint captured during dump generation.

scope_count: u64

Number of scopes written by the producer.

var_count: u64

Number of variables written by the producer.

max_handle: u64

Highest variable handle emitted (1-based index).

vc_section_count: u64

Number of value-change sections present in the file.

timescale_exponent: i8

Base-10 exponent describing the simulation time unit (10^exponent seconds).

version: String

Producer version string (null terminated within the 128-byte buffer).

date: String

Producer supplied date string (null terminated within the 119-byte buffer).

file_type: u8

File type marker (e.g. Verilog, VHDL, mixed).

time_zero: u64

Simulation time zero offset stored in the header.

Implementations

impl Header

pub fn read<R: Read + Seek>(reader: &mut R) -> Result<Self>

Reads and parses the header block from the provided reader.

pub fn timescale_factor(&self) -> f64

Returns the timescale as 10^exponent seconds.

Trait Implementations

impl Clone for Header

fn clone(&self) -> Header

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Header

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

Formats the value using the given formatter.

impl Default for Header

fn default() -> Self

Returns the “default value” for a type.