Struct FnSigKind 

pub struct FnSigKind<I: Interner> {
    flags: u8,
    _marker: PhantomData<fn() -> I>,
}

Contains the packed non-type fields of a function signature.

Fields

flags: u8

Holds the c_variadic and safety bitflags, and 6 bits for the ExternAbi variant and unwind flag.

_marker: PhantomData<fn() -> I>

Implementations

impl<I: Interner> FnSigKind<I>

const EXTERN_ABI_MASK: u8 = 0b111111

Mask for the ExternAbi variant, including the unwind flag.

const SAFE_FLAG: u8

Bitflag for Safety::Safe. The default is Unsafe.

const C_VARIADIC_FLAG: u8

Bitflag for a trailing C-style variadic argument.

pub fn default() -> Self

Create a new FnSigKind with the “Rust” ABI, “Unsafe” safety, and no C-style variadic argument. To modify these flags, use the set_* methods, for readability.

pub fn new(abi: ExternAbi, safety: I::Safety, c_variadic: bool) -> Self

Create a new FnSigKind with the given ABI, safety, and C-style variadic flag.

pub fn set_abi(self, abi: ExternAbi) -> Self

Set the ABI, including the unwind flag.

pub fn set_safety(self, safety: I::Safety) -> Self

Set the safety flag, true is Safe.

pub fn set_c_variadic(self, c_variadic: bool) -> Self

Set the C-style variadic argument flag.

pub fn abi(self) -> ExternAbi

Get the ABI, including the unwind flag.

pub fn is_safe(self) -> bool

Get the safety flag.

pub fn safety(self) -> I::Safety

Returns the safety mode.

pub fn c_variadic(self) -> bool

Do the function arguments end with a C-style variadic argument?

Trait Implementations

impl<I> Clone for FnSigKind<I>

where I: Interner,

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: Interner> Debug for FnSigKind<I>

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

Formats the value using the given formatter.

impl<I: Interner, __D: Decoder> Decodable<__D> for FnSigKind<I>

where PhantomData<fn() -> I>: Decodable<__D>,

fn decode(__decoder: &mut __D) -> Self

impl<I: Interner, __E: Encoder> Encodable<__E> for FnSigKind<I>

where PhantomData<fn() -> I>: Encodable<__E>,

fn encode(&self, __encoder: &mut __E)

impl<I> Hash for FnSigKind<I>

where I: Interner,

fn hash<__H: Hasher>(&self, __state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<I: Interner> HashStable for FnSigKind<I>

where PhantomData<fn() -> I>: HashStable,

fn hash_stable<__Hcx: HashStableContext>( &self, __hcx: &mut __Hcx, __hasher: &mut StableHasher, )

impl<I: Interner, J: Interner> Lift<J> for FnSigKind<I>

type Lifted = FnSigKind<J>

fn lift_to_interner(self, _cx: J) -> Option<Self::Lifted>

impl<I> PartialEq for FnSigKind<I>

where I: Interner,

fn eq(&self, __other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I> TypeFoldable<I> for FnSigKind<I>

where I: Interner,

fn try_fold_with<__F: FallibleTypeFolder<I>>( self, __folder: &mut __F, ) -> Result<Self, __F::Error>

The entry point for folding. To fold a value t with a folder f call: t.try_fold_with(f).

fn fold_with<__F: TypeFolder<I>>(self, __folder: &mut __F) -> Self

The entry point for folding. To fold a value t with a folder f call: t.fold_with(f).

impl<I> TypeVisitable<I> for FnSigKind<I>

where I: Interner,

fn visit_with<__V: TypeVisitor<I>>(&self, __visitor: &mut __V) -> __V::Result

The entry point for visiting. To visit a value t with a visitor v call: t.visit_with(v).

impl<I> Copy for FnSigKind<I>

where I: Interner,

impl<I> Eq for FnSigKind<I>

where I: Interner,

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte