Struct ContractFileHeader 

#[repr(C)]
pub struct ContractFileHeader {
    pub magic: [u8; 4],
    pub read_only_section_file_size: u32,
    pub read_only_section_memory_size: u32,
    pub metadata_offset: u32,
    pub metadata_size: u16,
    pub num_methods: u16,
    pub host_call_fn_offset: u32,
}

Header of the contract file

Fields

magic: [u8; 4]

Always CONTRACT_FILE_MAGIC

read_only_section_file_size: u32

Size of the read-only section in bytes as stored in the file

read_only_section_memory_size: u32

Size of the read-only section in bytes as will be written to memory during execution.

If larger than read_only_section_file_size, then zeroed padding needs to be added.

metadata_offset: u32

Offset of the metadata section in bytes relative to the start of the file

metadata_size: u16

Size of the metadata section in bytes

num_methods: u16

Number of methods in the contract

host_call_fn_offset: u32

Host call function offset in bytes relative to the start of the file.

0 means no host call.

Trait Implementations

impl Clone for ContractFileHeader

fn clone(&self) -> ContractFileHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContractFileHeader

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

Formats the value using the given formatter.

impl PartialEq for ContractFileHeader

fn eq(&self, other: &ContractFileHeader) -> 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 TrivialType for ContractFileHeader

where [u8; 4]: TrivialType, u32: TrivialType, u16: TrivialType,

const METADATA: &[u8]

Data structure metadata in binary form, describing shape and types of the contents, see [IoTypeMetadataKind] for encoding details.

const SIZE: u32 = _

unsafe fn read_unaligned(bytes: &[u8]) -> Option<Self>

Read unaligned value from memory.

unsafe fn read_unaligned_unchecked(bytes: &[u8]) -> Self

Similar to [Self::read_unaligned()], but doesn’t do any checks at all.

unsafe fn from_bytes(bytes: &[u8]) -> Option<&Self>

Create a reference to a type, which is represented by provided memory.

unsafe fn from_bytes_unchecked(bytes: &[u8]) -> &Self

Similar to [Self::from_bytes()], but doesn’t do any checks at all.

unsafe fn from_bytes_mut(bytes: &mut [u8]) -> Option<&mut Self>

Create a mutable reference to a type, which is represented by provided memory.

unsafe fn from_bytes_mut_unchecked(bytes: &mut [u8]) -> &mut Self

Similar to [Self::from_bytes_mut()], but doesn’t do any checks at all.

fn as_bytes(&self) -> &[u8; { _ }]

Access the underlying byte representation of a data structure

unsafe fn as_bytes_mut(&mut self) -> &mut [u8; { _ }]

Access the underlying mutable byte representation of a data structure.

impl Copy for ContractFileHeader

impl Eq for ContractFileHeader

impl StructuralPartialEq for ContractFileHeader