Trait printf_wrap::PrintfArgument

pub trait PrintfArgument: PrintfArgumentPrivate + Copy {
    type CPrintfType;

    const IS_CHAR: bool = false;
    const IS_SHORT: bool = false;
    const IS_INT: bool = false;
    const IS_LONG: bool = false;
    const IS_LONG_LONG: bool = false;
    const IS_SIZE: bool = false;
    const IS_MAX: bool = false;
    const IS_PTRDIFF: bool = false;
    const IS_SIGNED: bool = false;
    const IS_FLOAT: bool = false;
    const IS_C_STRING: bool = false;
    const IS_POINTER: bool = false;

    fn as_c_val(self) -> Self::CPrintfType;
}

A Rust-side argument to a safe wrapper around a printf(3)-like function.

This is a sealed trait; consumers of this crate are not allowed to create their own impls in order to unconditionally preserve safety.

Required Associated Types

type CPrintfType

The C type corresponding to Self that we should really send as an argument to a printf(3)-like function.

Provided Associated Constants

const IS_CHAR: bool = false

Whether the type is consistent with C’s char.

const IS_SHORT: bool = false

Whether the type is consistent with C’s short int.

const IS_INT: bool = false

Whether the type is consistent with C’s int.

const IS_LONG: bool = false

Whether the type is consistent with C’s long int.

const IS_LONG_LONG: bool = false

Whether the type is consistent with C’s long long int.

const IS_SIZE: bool = false

Available on crate feature libc only.

Whether the type is consistent with C’s size_t.

const IS_MAX: bool = false

Available on crate feature libc only.

Whether the type is consistent with C’s intmax_t.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

Whether the type is consistent with C’s ptrdiff_t.

const IS_SIGNED: bool = false

Whether the type is a signed integer type, as opposed to unsigned.

const IS_FLOAT: bool = false

Whether the type is floating-point.

const IS_C_STRING: bool = false

Whether the type is a null-terminated string.

const IS_POINTER: bool = false

Whether the type is a pointer.

Required Methods

fn as_c_val(self) -> Self::CPrintfType

Converts self to a value suitable for sending to printf(3).

Implementations on Foreign Types

impl PrintfArgument for u8

const IS_SIGNED: bool = false

const IS_CHAR: bool = true

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <u8 as LargerOfOp<u32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for i8

const IS_SIGNED: bool = true

const IS_CHAR: bool = true

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <i8 as LargerOfOp<i32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for u16

const IS_SIGNED: bool = false

const IS_CHAR: bool = false

const IS_SHORT: bool = true

const IS_INT: bool = false

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <u16 as LargerOfOp<u32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for i16

const IS_SIGNED: bool = true

const IS_CHAR: bool = false

const IS_SHORT: bool = true

const IS_INT: bool = false

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <i16 as LargerOfOp<i32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for u32

const IS_SIGNED: bool = false

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = true

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <u32 as LargerOfOp<u32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for i32

const IS_SIGNED: bool = true

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = true

const IS_LONG: bool = false

const IS_LONG_LONG: bool = false

const IS_SIZE: bool = false

Available on crate feature libc only.

const IS_MAX: bool = false

Available on crate feature libc only.

const IS_PTRDIFF: bool = false

Available on crate feature libc only.

type CPrintfType = <i32 as LargerOfOp<i32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for u64

const IS_SIGNED: bool = false

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = true

const IS_LONG_LONG: bool = true

const IS_SIZE: bool = true

Available on crate feature libc only.

const IS_MAX: bool = true

Available on crate feature libc only.

const IS_PTRDIFF: bool = true

Available on crate feature libc only.

type CPrintfType = <u64 as LargerOfOp<u32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for i64

const IS_SIGNED: bool = true

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = true

const IS_LONG_LONG: bool = true

const IS_SIZE: bool = true

Available on crate feature libc only.

const IS_MAX: bool = true

Available on crate feature libc only.

const IS_PTRDIFF: bool = true

Available on crate feature libc only.

type CPrintfType = <i64 as LargerOfOp<i32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for usize

const IS_SIGNED: bool = false

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = true

const IS_LONG_LONG: bool = true

const IS_SIZE: bool = true

Available on crate feature libc only.

const IS_MAX: bool = true

Available on crate feature libc only.

const IS_PTRDIFF: bool = true

Available on crate feature libc only.

type CPrintfType = <usize as LargerOfOp<u32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for isize

const IS_SIGNED: bool = true

const IS_CHAR: bool = false

const IS_SHORT: bool = false

const IS_INT: bool = false

const IS_LONG: bool = true

const IS_LONG_LONG: bool = true

const IS_SIZE: bool = true

Available on crate feature libc only.

const IS_MAX: bool = true

Available on crate feature libc only.

const IS_PTRDIFF: bool = true

Available on crate feature libc only.

type CPrintfType = <isize as LargerOfOp<i32>>::Output

fn as_c_val(self) -> Self::CPrintfType

impl PrintfArgument for f32

const IS_FLOAT: bool = true

type CPrintfType = f64

fn as_c_val(self) -> c_double

impl PrintfArgument for f64

const IS_FLOAT: bool = true

type CPrintfType = f64

fn as_c_val(self) -> c_double

impl<T: AsRef<CStr>> PrintfArgument for &T

type CPrintfType = *const i8

const IS_C_STRING: bool = true

fn as_c_val(self) -> *const c_char

impl<T: Sized> PrintfArgument for *const T

type CPrintfType = *const c_void

const IS_POINTER: bool = true

fn as_c_val(self) -> *const c_void

impl<T: Sized> PrintfArgument for *mut T

type CPrintfType = *const c_void

const IS_POINTER: bool = true

fn as_c_val(self) -> *const c_void

Implementors

impl PrintfArgument for NullString

type CPrintfType = *const i8

const IS_C_STRING: bool = true