Enum FitsError 

#[non_exhaustive]
pub enum FitsError {
    AmbiguousKeyword {
        keyword: String,
        count: usize,
    },
    KeywordTooLong {
        keyword: String,
    },
    InvalidKeyword {
        keyword: String,
    },
    OccurrenceOutOfRange {
        keyword: String,
        occurrence: usize,
        count: usize,
    },
    MissingEnd,
    TruncatedHeader,
    Io(String),
}

Errors from validated header mutations, ambiguous lookups, and oversized standalone serialization.

Parsing is lenient and does not produce these; header-only serialization (Header::to_header_bytes) is infallible.

Examples

let mut h = Header::new();
h.append("GAIN", 1).unwrap();
h.append("GAIN", 2).unwrap();
assert!(matches!(
    h.get::<i64>("GAIN"),
    Err(FitsError::AmbiguousKeyword { .. })
));

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.

AmbiguousKeyword

A bare-name get/set/remove addressed a keyword that occurs more than once. Select one with an (name, occurrence) key.

Fields

keyword: String

The duplicated keyword.

count: usize

How many times it occurs.

KeywordTooLong

A keyword longer than the 8-character FITS field.

Fields

keyword: String

The offending keyword.

InvalidKeyword

A keyword containing bytes outside the FITS keyword set (A-Z 0-9 - _).

Fields

keyword: String

The offending keyword.

OccurrenceOutOfRange

An (name, occurrence) key targeted an occurrence that does not exist.

Fields

keyword: String

The keyword addressed.

occurrence: usize

The 0-based occurrence requested.

count: usize

How many occurrences exist.

MissingEnd

Header::update_file found no END card in the existing file’s header region, so the data unit’s boundary cannot be located.

TruncatedHeader

Header::update_file found an END card, but the file ends before that header’s 2880-byte block is complete — a truncated FITS file.

Io(String)

A file read or write failed (Header::read_from_file, Header::update_file).

Trait Implementations

impl Clone for FitsError

fn clone(&self) -> FitsError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FitsError

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

Formats the value using the given formatter.

impl Display for FitsError

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

Formats the value using the given formatter.

impl Eq for FitsError

impl Error for FitsError

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 FitsError

fn from(e: Error) -> Self

Converts to this type from the input type.

impl PartialEq for FitsError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for FitsError