Enum syntax_pos::hygiene::Transparency [−][src]
pub enum Transparency { Transparent, SemiTransparent, Opaque, }
A property of a macro expansion that determines how identifiers produced by that expansion are resolved.
Variants
Transparent
Identifier produced by a transparent expansion is always resolved at call-site.
Call-site spans in procedural macros, hygiene opt-out in macro
should use this.
SemiTransparent
Identifier produced by a semi-transparent expansion may be resolved
either at call-site or at definition-site.
If it's a local variable, label or $crate
then it's resolved at def-site.
Otherwise it's resolved at call-site.
macro_rules
macros behave like this, built-in macros currently behave like this too,
but that's an implementation detail.
Opaque
Identifier produced by an opaque expansion is always resolved at definition-site.
Def-site spans in procedural macros, identifiers from macro
by default use this.
Trait Implementations
impl Copy for Transparency
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impl Copy for Transparency
impl Clone for Transparency
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impl Clone for Transparency
fn clone(&self) -> Transparency
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fn clone(&self) -> Transparency
Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
impl PartialEq for Transparency
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impl PartialEq for Transparency
fn eq(&self, other: &Transparency) -> bool
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fn eq(&self, other: &Transparency) -> bool
This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, other: &Rhs) -> bool
1.0.0[src]
fn ne(&self, other: &Rhs) -> bool
This method tests for !=
.
impl Eq for Transparency
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impl Eq for Transparency
impl PartialOrd for Transparency
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impl PartialOrd for Transparency
fn partial_cmp(&self, other: &Transparency) -> Option<Ordering>
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fn partial_cmp(&self, other: &Transparency) -> Option<Ordering>
This method returns an ordering between self
and other
values if one exists. Read more
fn lt(&self, other: &Rhs) -> bool
1.0.0[src]
fn lt(&self, other: &Rhs) -> bool
This method tests less than (for self
and other
) and is used by the <
operator. Read more
fn le(&self, other: &Rhs) -> bool
1.0.0[src]
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 more
fn gt(&self, other: &Rhs) -> bool
1.0.0[src]
fn gt(&self, other: &Rhs) -> bool
This method tests greater than (for self
and other
) and is used by the >
operator. Read more
fn ge(&self, other: &Rhs) -> bool
1.0.0[src]
fn ge(&self, other: &Rhs) -> bool
This method tests greater than or equal to (for self
and other
) and is used by the >=
operator. Read more
impl Hash for Transparency
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impl Hash for Transparency
fn hash<__H: Hasher>(&self, state: &mut __H)
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fn hash<__H: Hasher>(&self, state: &mut __H)
Feeds this value into the given [Hasher
]. Read more
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
1.3.0[src]
fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Debug for Transparency
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impl Debug for Transparency
Auto Trait Implementations
impl Send for Transparency
impl Send for Transparency
impl Sync for Transparency
impl Sync for Transparency