Enum LanguageRegistrationError 

pub enum LanguageRegistrationError {
    ShadowsBuiltin {
        name: String,
    },
    AlreadyRegistered {
        name: String,
    },
    NoExtensions {
        name: String,
    },
    QueryCompile {
        name: String,
        detail: String,
    },
}

Why a registration was refused. Every variant names the offending language, because a plugin author reading a log line needs to know which of their contributions failed — and per LG.3’s error rule a failed language must not take the plugin’s other contributions with it.

Variants

ShadowsBuiltin

The name collides with a language compiled into the editor. Refused rather than shadowed: a plugin silently replacing rust would be a confusing failure to debug, and deliberate override is a separate question nobody has asked for yet.

Fields

name: String

AlreadyRegistered

Another plugin already registered this name.

Fields

name: String

NoExtensions

A language with no extensions can never be selected, so it is almost certainly a mistake in the manifest rather than an intentional registration.

Fields

name: String

QueryCompile

One of the language’s tree-sitter queries did not compile.

Queries compile at REGISTRATION, not first use, so this surfaces at load with the offending query named. The alternative — compile lazily — turns a typo in folds.scm into “folding silently does nothing in org files”, which is indistinguishable from the feature not existing and surfaces days later.

Fields

name: String

detail: String

Trait Implementations

impl Clone for LanguageRegistrationError

fn clone(&self) -> LanguageRegistrationError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LanguageRegistrationError

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

Formats the value using the given formatter.

impl Display for LanguageRegistrationError

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

Formats the value using the given formatter.

impl Eq for LanguageRegistrationError

impl Error for LanguageRegistrationError

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 PartialEq for LanguageRegistrationError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LanguageRegistrationError