Struct ReprOptions 

pub struct ReprOptions {
    pub repr_algo: ReprAlgorithm,
    pub align_modif: Option<AlignmentModifier>,
    pub transparent: bool,
    pub explicit_discr_type: Option<IntegerTy>,
}

The representation options as annotated by the user.

NOTE: This does not include less common/unstable representations such as #[repr(simd)] or the compiler internal #[repr(linear)]. Similarly, enum discriminant representations are encoded in Variant::discriminant and Discriminator instead.

Fields

repr_algo: ReprAlgorithm

align_modif: Option<AlignmentModifier>

transparent: bool

explicit_discr_type: Option<IntegerTy>

The type supplied to repr(..), if any.

Implementations

impl ReprOptions

pub fn guarantees_fixed_field_order(&self) -> bool

Whether this representation options guarantee a fixed field ordering for the type.

Since we don’t support repr(simd) or repr(linear) yet, this is the case if it’s either repr(C) or an explicit discriminant type for an enum with fields (if it doesn’t have fields, this obviously doesn’t matter anyway).

Cf. https://doc.rust-lang.org/reference/type-layout.html#r-layout.repr.c.struct and https://doc.rust-lang.org/reference/type-layout.html#r-layout.repr.primitive.adt.

Trait Implementations

impl AstVisitable for ReprOptions

where ReprOptions: PartialEq,

fn drive<V: VisitAst>(&self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_mut<V: VisitAstMut>(&mut self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_two<V: ZipAst>(&self, other: &Self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn name(&self) -> &'static str

The name of the type, used for debug logging.

fn dyn_visit<T: AstVisitable>(&self, f: impl FnMut(&T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

fn dyn_visit_mut<T: AstVisitable>(&mut self, f: impl FnMut(&mut T))

where Self: Sized,

Visit all occurrences of that type inside self, in pre-order traversal.

impl Clone for ReprOptions

fn clone(&self) -> ReprOptions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ReprOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ReprOptions

fn default() -> ReprOptions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ReprOptions

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ReprOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ReprOptions

impl PartialEq for ReprOptions

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for ReprOptions

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ReprOptions