Struct StdWrapper

#[repr(transparent)]
pub struct StdWrapper<T>(pub T);

A wrapper type used to define methods for std types.

Std types are coerced to this type through the approach used in the coerce_fmt macro.

Example

Formatting std types with this type’s to_panicvals methods, without using macros.

use const_panic::{ArrayString, FmtArg, StdWrapper};

assert_eq!(
    ArrayString::<99>::from_panicvals(
        &StdWrapper("hello").to_panicvals(FmtArg::DEBUG)
    ).unwrap(),
    r#""hello""#
);

assert_eq!(
    ArrayString::<99>::from_panicvals(
        &StdWrapper(&[3u8, 5, 8]).to_panicvals(FmtArg::ALT_DEBUG)
    ).unwrap(),
    "[\n    3,\n    5,\n    8,\n]"
);

Tuple Fields

0: T

Implementations

impl StdWrapper<&char>

pub const fn to_panicvals(self, fmtarg: FmtArg) -> [PanicVal<'static>; 1]

Converts this char to a single-element PanicVal array.

pub const fn to_panicval(self, fmtarg: FmtArg) -> PanicVal<'static>

Converts this char to a PanicVal.

impl StdWrapper<&u8>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this u8 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this u8 to a PanicVal.

impl StdWrapper<&u16>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this u16 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this u16 to a PanicVal.

impl StdWrapper<&u32>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this u32 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this u32 to a PanicVal.

impl StdWrapper<&u64>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this u64 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this u64 to a PanicVal.

impl StdWrapper<&u128>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this u128 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this u128 to a PanicVal.

impl StdWrapper<&usize>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this usize to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this usize to a PanicVal.

impl StdWrapper<&i8>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this i8 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this i8 to a PanicVal.

impl StdWrapper<&i16>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this i16 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this i16 to a PanicVal.

impl StdWrapper<&i32>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this i32 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this i32 to a PanicVal.

impl StdWrapper<&i64>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this i64 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this i64 to a PanicVal.

impl StdWrapper<&i128>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this i128 to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this i128 to a PanicVal.

impl StdWrapper<&isize>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Converts this isize to a single-element PanicVal array.

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Converts this isize to a PanicVal.

impl<'s> StdWrapper<&'s bool>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'static>; 1]

Formats this bool into a single-PanicVal array

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'static>

Formats this bool into a PanicVal

impl<'a> StdWrapper<&'a str>

pub const fn to_panicvals(self, f: FmtArg) -> [PanicVal<'a>; 1]

Formats this &str into a single-PanicVal array

pub const fn to_panicval(self, f: FmtArg) -> PanicVal<'a>

Formats this &str into a PanicVal

impl<'s, 'a, const N: usize> StdWrapper<&'s [PanicVal<'a>; N]>

pub const fn to_panicvals(self, _: FmtArg) -> &'s [PanicVal<'a>; N]

impl<'s, 'a> StdWrapper<&'s [PanicVal<'a>]>

pub const fn to_panicvals(self, _: FmtArg) -> &'s [PanicVal<'a>]

impl<'a, 'b> StdWrapper<&'a &'b [PanicVal<'b>]>

pub const fn deref_panic_vals(self) -> &'b [PanicVal<'b>]

Coerces a &&[PanicVal<'_>] into a &[PanicVal<'_>]

impl<'a, 'b, const N: usize> StdWrapper<&'a &'b [PanicVal<'b>; N]>

pub const fn deref_panic_vals(self) -> &'b [PanicVal<'b>]

Coerces a &&[PanicVal<'_>; N] into a &[PanicVal<'_>]

impl<'b, const N: usize> StdWrapper<&'b [PanicVal<'b>; N]>

pub const fn deref_panic_vals(self) -> &'b [PanicVal<'b>]

Coerces a &[PanicVal<'_>; N] into a &[PanicVal<'_>]

impl StdWrapper<&Utf8Error>

pub const fn to_panicvals(self, fmtarg: FmtArg) -> [PanicVal<'static>; 5]

Formats a Utf8Error (supports both Debug and Display formatting).

Trait Implementations

impl<T: Clone> Clone for StdWrapper<T>

fn clone(&self) -> StdWrapper<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> PanicFmt for StdWrapper<T>

where T: PanicFmt,

const PV_COUNT: usize = T::PV_COUNT

The length of the array returned in Self::to_panicvals (an inherent method that formats the type for panic messages).

type This = StdWrapper<T>

The type after dereferencing all references.

type Kind = IsCustomType

Whether this is a user-defined type or standard library type.

const PROOF: IsPanicFmt<Self, Self::This, Self::Kind> = IsPanicFmt::NEW

A marker type that proves that Self implements PanicFmt.

impl<T: Copy> Copy for StdWrapper<T>