Enum gix_attributes::StateRef
source · pub enum StateRef<'a> {
Set,
Unset,
Value(ValueRef<'a>),
Unspecified,
}
Expand description
The state an attribute can be in, referencing the value.
Note that this doesn’t contain the name.
Variants§
Set
The attribute is listed, or has the special value ‘true’
Unset
The attribute has the special value ‘false’, or was prefixed with a -
sign.
Value(ValueRef<'a>)
The attribute is set to the given value, which followed the =
sign.
Note that values can be empty.
Unspecified
The attribute isn’t mentioned with a given path or is explicitly set to Unspecified
using the !
sign.
Implementations§
source§impl StateRef<'_>
impl StateRef<'_>
Access
sourcepub fn is_unspecified(&self) -> bool
pub fn is_unspecified(&self) -> bool
Return true
if the associated attribute was set to be unspecified using the !attr
prefix or it wasn’t mentioned.
sourcepub fn is_set(&self) -> bool
pub fn is_set(&self) -> bool
Return true
if the associated attribute was set with attr
. Note that this will also be true
if a value is assigned.
Trait Implementations§
source§impl<'a> Ord for StateRef<'a>
impl<'a> Ord for StateRef<'a>
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere Self: Sized,
Compares and returns the maximum of two values. Read more
source§impl<'a> PartialEq<StateRef<'a>> for StateRef<'a>
impl<'a> PartialEq<StateRef<'a>> for StateRef<'a>
source§impl<'a> PartialOrd<StateRef<'a>> for StateRef<'a>
impl<'a> PartialOrd<StateRef<'a>> for StateRef<'a>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
This method tests less than or equal to (for
self
and other
) and is used by the <=
operator. Read moreimpl<'a> Copy for StateRef<'a>
impl<'a> Eq for StateRef<'a>
impl<'a> StructuralEq for StateRef<'a>
impl<'a> StructuralPartialEq for StateRef<'a>
Auto Trait Implementations§
impl<'a> RefUnwindSafe for StateRef<'a>
impl<'a> Send for StateRef<'a>
impl<'a> Sync for StateRef<'a>
impl<'a> Unpin for StateRef<'a>
impl<'a> UnwindSafe for StateRef<'a>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more