Struct core::ffi::VaListImpl

#[repr(transparent)]
pub struct VaListImpl<'f> { /* fields omitted */ }

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

This is supported on non-AArch64 and non-PowerPC and non-x86-64, or AArch64 and (macOS or iOS), or WebAssembly, or JavaScript, or Windows only.

Basic implementation of a va_list.

Implementations

impl<'f> VaListImpl<'f>

pub fn as_va_list<'a>(&'a mut self) -> VaList<'a, 'f>

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Convert a VaListImpl into a VaList that is binary-compatible with C’s va_list.

impl<'f> VaListImpl<'f>

pub unsafe fn arg<T: VaArgSafe>(&mut self) -> T

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Advance to the next arg.

pub unsafe fn with_copy<F, R>(&self, f: F) -> R where
    F: for<'copy> FnOnce(VaList<'copy, 'f>) -> R, 

🔬 This is a nightly-only experimental API. (c_variadic #44930)

the c_variadic feature has not been properly tested on all supported platforms

Copies the va_list at the current location.

Trait Implementations

impl<'f> Clone for VaListImpl<'f>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'f> Debug for VaListImpl<'f>

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

Formats the value using the given formatter.

impl<'f> Drop for VaListImpl<'f>

fn drop(&mut self)

Executes the destructor for this type.