Struct PageHeader 

pub struct PageHeader {
    pub version: u16,
    pub page_type: PageType,
    pub cell_count: u16,
}

Decoded page header. Encoded on disk as [version: u16 LE, page_type: u8, cell_count: u16 LE].

Fields

version: u16

page_type: PageType

cell_count: u16

Implementations

impl PageHeader

pub fn new(page_type: PageType, cell_count: u16) -> Self

Build a fresh header at the current format version.

pub fn encode(&self, out: &mut [u8]) -> Result<(), PageFormatError>

Serialise into the first PAGE_HEADER_SIZE bytes of out.

pub fn decode(bytes: &[u8]) -> Result<Self, PageFormatError>

Parse the first PAGE_HEADER_SIZE bytes of bytes. Versions newer than FORMAT_VERSION are rejected — we never silently read a format we cannot write.

Trait Implementations

impl Clone for PageHeader

fn clone(&self) -> PageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PageHeader

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

Formats the value using the given formatter.

impl PartialEq for PageHeader

fn eq(&self, other: &PageHeader) -> 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 PageHeader

impl Eq for PageHeader

impl StructuralPartialEq for PageHeader