Enum FilterClass 

pub enum FilterClass {
    Absent,
    FlateDecode,
    Other,
}

Classification of a stream dictionary’s /Filter entry.

The exact-replay candidate only admits a stream whose encoded payload is a lone DEFLATE/zlib stream, i.e. exactly one FlateDecode filter. Anything else — no key, a different filter, a filter chain, or an unrecognized shape — is conservative Other/Absent and is never a replay candidate.

Variants

Absent

The /Filter key is absent.

FlateDecode

Exactly one filter, FlateDecode (bare name or a single-element array).

Other

Any other value (different filter, chain, empty array, odd shape).

Trait Implementations

impl Clone for FilterClass

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FilterClass

impl Debug for FilterClass

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

Formats the value using the given formatter.

impl Eq for FilterClass

impl PartialEq for FilterClass

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FilterClass