Enum ra_ap_hir::CfgAtom [−][src]
pub enum CfgAtom { Flag(SmolStr), KeyValue { key: SmolStr, value: SmolStr, }, }
Expand description
A simple configuration value passed in from the outside.
Variants
eg. #[cfg(test)]
eg. #[cfg(target_os = "linux")]
Note that a key can have multiple values that are all considered “active” at the same time.
For example, #[cfg(target_feature = "sse")]
and #[cfg(target_feature = "sse2")]
.
Implementations
Returns true
when the atom comes from the target specification.
If this returns true
, then changing this atom requires changing the compilation target. If
it returns false
, the atom might come from a build script or the build system.
Trait Implementations
This method returns an ordering between self
and other
values if one exists. Read more
This method tests less than (for self
and other
) and is used by the <
operator. Read more
This method tests less than or equal to (for self
and other
) and is used by the <=
operator. Read more
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
Auto Trait Implementations
impl RefUnwindSafe for CfgAtom
impl UnwindSafe for CfgAtom
Blanket Implementations
Mutably borrows from an owned value. Read more
fn cast<U>(self, interner: &<U as HasInterner>::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: &<U as HasInterner>::Interner) -> U where
Self: CastTo<U>,
U: HasInterner,
Cast a value to type U
using CastTo
.
Compare self to key
and return true
if they are equal.
Instruments this type with the provided Span
, returning an
Instrumented
wrapper. Read more
impl<T> Any for T where
T: Any,