Enum Error 

pub enum Error {
    Pest(Error<Rule>),
    IO(Error),
    Expansion(ExpansionError),
    InvalidFacet(String),
    Unsupported(&'static str, &'static str),
}

The error type for this crate.

Variants

Pest(Error<Rule>)

An error that occurred at the pest parser level.

This is returned from any parsing methods when the input is written with invalid syntax, or when attempting to parse an incomplete input.

Example:

use horned_functional::FromFunctional;

let res = SetOntology::from_ofn("Ontology(");
assert_matches!(res, Err(horned_functional::Error::Pest(_)));

IO(Error)

An error that happened at the I/O level.

Example:

let res = horned_functional::from_file::<SetOntology, _>("/some/missing/file")
    .map(|x| x.0);
assert_matches!(res, Err(horned_functional::Error::IO(_)));

Expansion(ExpansionError)

A CURIE expansion went wrong.

This error can be encountered in documents where a CURIE used an undefined prefix, or when attempting to parse an abbreviated IRI without providing a prefix mapping.

Example

use horned_functional::FromFunctional;

let res = IRI::from_ofn("example:Entity");
assert_matches!(res, Err(horned_functional::Error::Expansion(_)));

InvalidFacet(String)

An unknown IRI was used as a facet.

Example

use horned_functional::FromFunctional;

let res = Facet::from_ofn("<http://example.com/thing>");
assert_matches!(res, Err(horned_functional::Error::InvalidFacet(_)));

Unsupported(&'static str, &'static str)

An unsupported construct was used.

See the relevant issue for each unsupported syntax construct; if the issue has been resolved, please open an issue on the fastobo/horned-functional repository so that it can be fixed.

Trait Implementations

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, __formatter: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

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<Rule>> for Error

fn from(source: Error<Rule>) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ExpansionError> for Error

fn from(e: ExpansionError) -> Self

Converts to this type from the input type.