Struct ra_ap_hir::CfgOptions
source · pub struct CfgOptions { /* private fields */ }
Expand description
Configuration options used for conditional compilation on items with cfg
attributes.
We have two kind of options in different namespaces: atomic options like unix
, and
key-value options like target_arch="x86"
.
Note that for key-value options, one key can have multiple values (but not none).
feature
is an example. We have both feature="foo"
and feature="bar"
if features
foo
and bar
are both enabled. And here, we store key-value options as a set of tuple
of key and value in key_values
.
See: https://doc.rust-lang.org/reference/conditional-compilation.html#set-configuration-options
Implementations§
source§impl CfgOptions
impl CfgOptions
pub fn check(&self, cfg: &CfgExpr) -> Option<bool>
pub fn insert_atom(&mut self, key: SmolStr)
pub fn insert_key_value(&mut self, key: SmolStr, value: SmolStr)
pub fn difference<'a>( &'a self, other: &'a CfgOptions ) -> impl Iterator<Item = &'a CfgAtom> + 'a
pub fn apply_diff(&mut self, diff: CfgDiff)
pub fn get_cfg_keys(&self) -> impl Iterator<Item = &SmolStr>
pub fn get_cfg_values<'a>( &'a self, cfg_key: &'a str ) -> impl Iterator<Item = &'a SmolStr> + 'a
Trait Implementations§
source§impl Clone for CfgOptions
impl Clone for CfgOptions
source§fn clone(&self) -> CfgOptions
fn clone(&self) -> CfgOptions
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for CfgOptions
impl Debug for CfgOptions
source§impl Default for CfgOptions
impl Default for CfgOptions
source§fn default() -> CfgOptions
fn default() -> CfgOptions
Returns the “default value” for a type. Read more
source§impl Extend<CfgAtom> for CfgOptions
impl Extend<CfgAtom> for CfgOptions
source§fn extend<T>(&mut self, iter: T)where
T: IntoIterator<Item = CfgAtom>,
fn extend<T>(&mut self, iter: T)where
T: IntoIterator<Item = CfgAtom>,
Extends a collection with the contents of an iterator. Read more
source§fn extend_one(&mut self, item: A)
fn extend_one(&mut self, item: A)
🔬This is a nightly-only experimental API. (
extend_one
)Extends a collection with exactly one element.
source§fn extend_reserve(&mut self, additional: usize)
fn extend_reserve(&mut self, additional: usize)
🔬This is a nightly-only experimental API. (
extend_one
)Reserves capacity in a collection for the given number of additional elements. Read more
source§impl<'a> IntoIterator for &'a CfgOptions
impl<'a> IntoIterator for &'a CfgOptions
§type Item = <&'a HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::Item
type Item = <&'a HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::Item
The type of the elements being iterated over.
§type IntoIter = <&'a HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::IntoIter
type IntoIter = <&'a HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::IntoIter
Which kind of iterator are we turning this into?
source§fn into_iter(self) -> <&'a CfgOptions as IntoIterator>::IntoIter
fn into_iter(self) -> <&'a CfgOptions as IntoIterator>::IntoIter
Creates an iterator from a value. Read more
source§impl IntoIterator for CfgOptions
impl IntoIterator for CfgOptions
§type Item = <HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::Item
type Item = <HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::Item
The type of the elements being iterated over.
§type IntoIter = <HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::IntoIter
type IntoIter = <HashSet<CfgAtom, BuildHasherDefault<FxHasher>> as IntoIterator>::IntoIter
Which kind of iterator are we turning this into?
source§fn into_iter(self) -> <CfgOptions as IntoIterator>::IntoIter
fn into_iter(self) -> <CfgOptions as IntoIterator>::IntoIter
Creates an iterator from a value. Read more
source§impl PartialEq for CfgOptions
impl PartialEq for CfgOptions
source§fn eq(&self, other: &CfgOptions) -> bool
fn eq(&self, other: &CfgOptions) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl Eq for CfgOptions
impl StructuralPartialEq for CfgOptions
Auto Trait Implementations§
impl Freeze for CfgOptions
impl RefUnwindSafe for CfgOptions
impl Send for CfgOptions
impl Sync for CfgOptions
impl Unpin for CfgOptions
impl UnwindSafe for CfgOptions
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
source§impl<T> Cast for T
impl<T> Cast for T
source§fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
fn cast<U>(self, interner: <U as HasInterner>::Interner) -> Uwhere
Self: CastTo<U>,
U: HasInterner,
Cast a value to type
U
using CastTo
.source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.