Enum BuiltinOverrideError 

#[non_exhaustive]
pub enum BuiltinOverrideError {
    MalformedEntry(String),
    UnknownBuiltin(String),
    EmptySide(String),
    Conflict {
        builtin: &'static str,
        first: String,
        second: String,
    },
}

Why a LAMINA_BUILTINS value could not be read.

An override that cannot be understood is reported rather than dropped: a typo in the variable would otherwise leave the default symbol in the output, with nothing said about it.

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.

MalformedEntry(String)

An entry with no =, so it names neither a builtin nor a replacement.

UnknownBuiltin(String)

An entry whose left side is not a runtime helper this compiler calls.

EmptySide(String)

An entry with an empty builtin name or an empty replacement symbol.

Conflict

Two entries naming the same builtin, with different replacements.

Fields

builtin: &'static str

first: String

second: String

Trait Implementations

impl Clone for BuiltinOverrideError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BuiltinOverrideError

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

Formats the value using the given formatter.

impl Display for BuiltinOverrideError

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

Formats the value using the given formatter.

impl Eq for BuiltinOverrideError

impl Error for BuiltinOverrideError

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 BuiltinOverrideError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for BuiltinOverrideError