Enum MetadataPolarityFormat 

pub enum MetadataPolarityFormat {
    Legacy,
    RequiredOptIn,
}

The metadata-field polarity generation of a sealed package — decided by the presence of the package’s format marker (schema-format.json), never by heuristics over the document body.

Under the pre-flip language an absent required/optional key meant required; under the current language absence means optional. The two are syntactically indistinguishable, so an unmarked sealed package reads with Self::Legacy semantics — its effective behaviour conserved — while packages sealed from this change on carry the marker and read as Self::RequiredOptIn. Directory (authoring) loads are always RequiredOptIn: the author writes against the current language.

Variants

Legacy

Pre-flip sealed content: an absent key means required.

RequiredOptIn

Current language: an absent key means optional.

Trait Implementations

impl Clone for MetadataPolarityFormat

fn clone(&self) -> MetadataPolarityFormat

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for MetadataPolarityFormat

impl Debug for MetadataPolarityFormat

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

Formats the value using the given formatter.

impl Eq for MetadataPolarityFormat

impl PartialEq for MetadataPolarityFormat

fn eq(&self, other: &MetadataPolarityFormat) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for MetadataPolarityFormat