Struct GroupHeader 

#[repr(C, packed(1))]
pub struct GroupHeader {
    pub block_length: u16,
    pub num_in_group: u16,
}

Repeating group header (4 bytes).

The group header precedes each repeating group and contains:

• Block length: Size of each group entry in bytes
• Num in group: Number of entries in the group

Wire Format

+0: blockLength  (u16, 2 bytes)
+2: numInGroup   (u16, 2 bytes)

Fields

block_length: u16

Length of each group entry in bytes.

num_in_group: u16

Number of entries in the group.

Implementations

impl GroupHeader

pub const ENCODED_LENGTH: usize = 4

Encoded length of the group header in bytes.

pub const fn new(block_length: u16, num_in_group: u16) -> Self

Creates a new group header with the specified values.

Arguments

• block_length - Length of each group entry in bytes
• num_in_group - Number of entries in the group

pub fn wrap<B: ReadBuffer + ?Sized>(buffer: &B, offset: usize) -> Self

Wraps a buffer and decodes the group header at the given offset.

Arguments

• buffer - Buffer to read from
• offset - Byte offset to start reading

Panics

Panics if the buffer is too short.

pub fn encode<B: WriteBuffer + ?Sized>(&self, buffer: &mut B, offset: usize)

Encodes the group header to the buffer at the given offset.

Arguments

• buffer - Buffer to write to
• offset - Byte offset to start writing

pub const fn group_size(&self) -> usize

Returns the total size of the group (header + all entries).

pub const fn is_empty(&self) -> bool

Returns true if the group is empty.

Trait Implementations

impl Clone for GroupHeader

fn clone(&self) -> GroupHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for GroupHeader

impl Debug for GroupHeader

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

Formats the value using the given formatter.

impl Default for GroupHeader

fn default() -> GroupHeader

Returns the “default value” for a type.

impl Eq for GroupHeader

impl PartialEq for GroupHeader

fn eq(&self, other: &GroupHeader) -> 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 StructuralPartialEq for GroupHeader