Struct SizeBound 

pub struct SizeBound {
    pub bytes: usize,
    pub bounded: bool,
    pub plain: bool,
}

What one walk of a schema can say about size.

Fields

bytes: usize

Bytes, given the starting offset the walk was handed.

bounded: bool

False once an unbounded String / WString / Sequence is reached — bytes is then a FLOOR, not a bound, and callers must not size a buffer from it.

plain: bool

No variable-length member anywhere, so the layout is fixed: bytes is EXACT rather than an upper bound, and the type is loan-eligible (phase-380 W5 wires this to borrow_loaned_message / subscription_supports_in_place rather than letting a second notion of “fixed layout” grow).

Trait Implementations

impl Clone for SizeBound

fn clone(&self) -> SizeBound

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SizeBound

impl Debug for SizeBound

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

Formats the value using the given formatter.

impl Eq for SizeBound

impl PartialEq for SizeBound

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