Enum language_tags::Error

[−] Show declaration

pub enum Error {
    DuplicateExtension,
    EmptyExtension,
    EmptyPrivateUse,
    ForbiddenChar,
    InvalidSubtag,
    InvalidLanguage,
    SubtagTooLong,
    TooManyExtlangs,
}

[−] Expand description

Defines an Error type for langtags.

Errors occur mainly during parsing of language tags.

Variants

DuplicateExtension

[−] Expand description

The same extension subtag is only allowed once in a tag before the private use part.

EmptyExtension

[−] Expand description

If an extension subtag is present, it must not be empty.

EmptyPrivateUse

[−] Expand description

If the x subtag is present, it must not be empty.

ForbiddenChar

[−] Expand description

The langtag contains a char that is not A-Z, a-z, 0-9 or the dash.

InvalidSubtag

[−] Expand description

A subtag fails to parse, it does not match any other subtags.

InvalidLanguage

[−] Expand description

The given language subtag is invalid.

SubtagTooLong

[−] Expand description

A subtag may be eight characters in length at maximum.

TooManyExtlangs

[−] Expand description

At maximum three extlangs are allowed, but zero to one extlangs are preferred.

Trait Implementations

impl Debug for Error[+]

[+] Show hidden undocumented items

fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl Display for Error[+]

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fn fmt(&self, f: &mut Formatter) -> Result[−]

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error[+]

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fn description(&self) -> &str[−]

Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>[−]

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

Returns a stack backtrace, if available, of where this error occurred.

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

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl PartialEq<Error> for Error[+]

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

This method tests for self and other values to be equal, and is used by ==.

[+] Expand attributes

#[must_use] fn ne(&self, other: &Rhs) -> bool[−]

This method tests for !=.

impl StructuralEq for Error

impl StructuralPartialEq for Error