Enum target_spec::errors::Error

#[non_exhaustive]
pub enum Error {
    InvalidExpression(ExpressionParseError),
    UnknownTargetTriple(TripleParseError),
    UnknownPlatformTriple(TripleParseError),
    UnknownPredicate(String),
}

An error that happened during target-spec parsing or evaluation.

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.

InvalidExpression(ExpressionParseError)

A cfg() expression was invalid and could not be parsed.

UnknownTargetTriple(TripleParseError)

The provided target triple (in the position that a cfg() expression would be) was unknown.

UnknownPlatformTriple(TripleParseError)

The provided platform triple was unknown.

UnknownPredicate(String)

👎Deprecated since 1.1.0: this variant is no longer in use

The provided cfg() expression parsed correctly, but it had an unknown predicate.

This is no longer used, but is kept for backwards compatibility.

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

Formats the value using the given formatter.

impl Error for Error

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

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 self, demand: &mut Demand<'a>)

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

Provides type based access to context intended for error reports.

impl PartialEq<Error> for Error

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Error

impl StructuralEq for Error

impl StructuralPartialEq for Error