Struct FnPtr 

pub struct FnPtr {
    pub unsafety: bool,
    pub abi: Abi,
    pub inputs: &'static [TypeId],
    pub output: TypeId,
    pub variadic: bool,
    pub is_splatted: bool,
    pub splatted_index: u8,
}

🔬This is a nightly-only experimental API. (type_info #146922)

Function pointer, e.g. fn(u8),

Fields

unsafety: bool

🔬This is a nightly-only experimental API. (type_info #146922)

Unsafety, true is unsafe

abi: Abi

🔬This is a nightly-only experimental API. (type_info #146922)

Abi, e.g. extern “C”

inputs: &'static [TypeId]

🔬This is a nightly-only experimental API. (type_info #146922)

Function inputs

output: TypeId

🔬This is a nightly-only experimental API. (type_info #146922)

Function return type, default is TypeId::of::<()>

variadic: bool

🔬This is a nightly-only experimental API. (type_info #146922)

Vardiadic function, e.g. extern “C” fn add(n: usize, mut args: …);

is_splatted: bool

🔬This is a nightly-only experimental API. (type_info #146922)

Is any function argument splatted?

splatted_index: u8

🔬This is a nightly-only experimental API. (type_info #146922)

The index of the splatted function argument in inputs, only valid if is_splatted is true. e.g. in fn overload(a: u8, #[rustc_splat] b: (f32, usize)) the index is 1, and it can be called as overload(a, 1.0, 2).

Implementations

impl FnPtr

pub const fn splatted(&self) -> Option<u8>

🔬This is a nightly-only experimental API. (type_info #146922)

Returns the splatted function argument index, or None if no argument is splatted.

Trait Implementations

impl Debug for FnPtr

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

Formats the value using the given formatter.