Struct Header 

#[repr(C, align(64))]
pub struct Header {

    pub magic: [u8; 4],
    pub version: u32,
    pub checksum: u32,
    pub total_size: u32,
    pub str_blob_size: u32,
    pub regex_blob_size: u32,
    pub str_table_count: u16,
    pub regex_table_count: u16,
    pub node_types_count: u16,
    pub node_fields_count: u16,
    pub trivia_count: u16,
    pub type_defs_count: u16,
    pub type_members_count: u16,
    pub type_names_count: u16,
    pub entrypoints_count: u16,
    pub transitions_count: u16,
    pub _reserved: [u8; 20],
}

File header - first 64 bytes of the bytecode file.

v3 layout (offsets computed from counts):

• 0-23: identity and sizes (magic, version, checksum, total_size, str_blob_size, regex_blob_size)
• 24-43: counts (10 × u16) — order matches section order
• 44-63: reserved

Fields

magic: [u8; 4]

Magic bytes: b“PTKQ“

version: u32

Format version (currently 3)

checksum: u32

CRC32 checksum of everything after the header

total_size: u32

Total file size in bytes

str_blob_size: u32

Size of the string blob in bytes.

regex_blob_size: u32

Size of the regex blob in bytes.

str_table_count: u16

regex_table_count: u16

node_types_count: u16

node_fields_count: u16

trivia_count: u16

type_defs_count: u16

type_members_count: u16

type_names_count: u16

entrypoints_count: u16

transitions_count: u16

_reserved: [u8; 20]

Implementations

impl Header

pub fn from_bytes(bytes: &[u8]) -> Self

Decode header from 64 bytes.

pub fn to_bytes(&self) -> [u8; 64]

Encode header to 64 bytes.

pub fn validate_magic(&self) -> bool

pub fn validate_version(&self) -> bool

pub fn compute_offsets(&self) -> SectionOffsets

Compute section offsets from counts and blob sizes.

Section order (all 64-byte aligned): Header → StringBlob → RegexBlob → StringTable → RegexTable → NodeTypes → NodeFields → Trivia → TypeDefs → TypeMembers → TypeNames → Entrypoints → Transitions

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.

impl PartialEq for Header

fn eq(&self, other: &Header) -> 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 Copy for Header

impl Eq for Header

impl StructuralPartialEq for Header