Enum Error 

pub enum Error {
    BadPolicy(String),
    Er7(Error),
}

What can go wrong.

Two variants, arising from exactly two situations: a policy that cannot be read, and a path that is not a path (D15, spec §9). Redaction itself cannot fail — a rule that matches nothing does nothing, and a position that is not there is not created — so Redactor::redact returns a Report rather than a Result.

Example:

use er7_redact::{Error, Policy};

assert!(matches!(Policy::parse("PID-5 obfuscate"), Err(Error::BadPolicy(_))));
assert!(matches!(Policy::parse("PID-0 clear"), Err(Error::BadPolicy(_))));

// A path handed straight to the API reports as `er7` phrased it.
use er7_redact::{Action, Rule};
assert!(matches!(Rule::new("PID-0", Action::Clear), Err(Error::Er7(_))));

Variants

BadPolicy(String)

A policy could not be read: an unknown action, a missing one, a count that is not a number, or a line naming something that is not a path. Carries a sentence naming the line and the problem (spec §6.4).

Er7(Error)

A path handed to the API is not a path. Carries er7’s own error, so that the message reads the same whichever crate reported it.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

One complete sentence, with no trailing period and no error prefix, so it reads correctly whether a caller writes {e}, wraps it, or prefixes it as the CLI does.

impl Eq for Error

impl Error for Error

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 Error

fn from(e: Error) -> Error

Converts to this type from the input type.

impl PartialEq for Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error