Struct DbHeader 

pub struct DbHeader {
    pub page_count: u32,
    pub schema_root_page: u32,
    pub format_version: u16,
    pub freelist_head: u32,
}

Parsed header. page_count includes page 0 itself.

Fields

page_count: u32

schema_root_page: u32

format_version: u16

On-disk format version this header carries. Tracked explicitly so save can preserve a v4 file as v4 (no FTS, no freelist), bump it to v5 (FTS), or bump it to v6 (freelist), per the on-demand promotion rules.

freelist_head: u32

First page of the persisted free-page list, or 0 if the list is empty. The freelist is a chain of trunk pages; each trunk records up to ~1018 free leaf-page numbers. v4/v5 files don’t carry a freelist on disk — decode_header returns 0 for them.

Trait Implementations

impl Clone for DbHeader

fn clone(&self) -> DbHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DbHeader

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

Formats the value using the given formatter.

impl PartialEq for DbHeader

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

impl Eq for DbHeader

impl StructuralPartialEq for DbHeader