Enum Refusal 

#[non_exhaustive]
pub enum Refusal {
    Unparseable(Error),
    PasswordRequired,
    UndecryptedCryptFilters,
    DamagedPageTree,
    DamagedResources,
    VerificationRegressed(Vec<(Category, usize, usize)>),
    BelowSimilarityFloor(Comparison),
    Internal(Error),
}

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Unparseable(Error)

The input does not parse as a PDF.

PasswordRequired

A password is needed to open the input.

UndecryptedCryptFilters

The input is encrypted with crypt filters the parser could not read, so it was not decrypted and would be written as garbage.

DamagedPageTree

The page tree refers to objects the parser could not load.

DamagedResources

Page content or resources refer to objects the parser could not load.

VerificationRegressed(Vec<(Category, usize, usize)>)

The output verifies worse than the input: per category, the input’s problem count and the output’s.

BelowSimilarityFloor(Comparison)

Pages fell below the similarity floor under strict verification.

Internal(Error)

A stage or the writer failed.

Trait Implementations

impl Debug for Refusal

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

Formats the value using the given formatter.

impl Display for Refusal

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

Formats the value using the given formatter.

impl Error for Refusal

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Refusal

Stage and writer errors become Internal, so ? works inside the pipeline.

fn from(e: Error) -> Self

Converts to this type from the input type.