82 lines
2.6 KiB
Rust
82 lines
2.6 KiB
Rust
#![allow(non_camel_case_types)]
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use core::fmt;
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pub type c_int = i32;
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pub type c_uchar = u8;
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pub type c_uint = u32;
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pub type size_t = usize;
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/// This might not match C's `c_char` exactly.
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/// The way we use it makes it fine either way but this type shouldn't be used outside of the library.
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pub type c_char = i8;
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/// This is an exact copy of https://doc.rust-lang.org/core/ffi/enum.c_void.html
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/// It should be Equivalent to C's void type when used as a pointer.
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///
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/// We can replace this with `core::ffi::c_void` once we update the rustc version to >=1.30.0.
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#[repr(u8)]
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pub enum c_void {
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#[doc(hidden)] __variant1,
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#[doc(hidden)] __variant2,
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}
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impl fmt::Debug for c_void {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.pad("c_void")
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}
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}
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#[cfg(test)]
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mod tests {
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use std::os::raw;
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use std::any::TypeId;
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use types;
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#[test]
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fn verify_types() {
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assert_eq!(TypeId::of::<types::c_int>(), TypeId::of::<raw::c_int>());
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assert_eq!(TypeId::of::<types::c_uchar>(), TypeId::of::<raw::c_uchar>());
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assert_eq!(TypeId::of::<types::c_uint>(), TypeId::of::<raw::c_uint>());
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assert_eq!(TypeId::of::<types::c_char>(), TypeId::of::<raw::c_char>());
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}
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}
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#[doc(hidden)]
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#[cfg(target_arch = "wasm32")]
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pub fn sanity_checks_for_wasm() {
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use std::mem::{size_of, align_of};
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extern "C" {
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pub static WASM32_INT_SIZE: c_uchar;
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pub static WASM32_INT_ALIGN: c_uchar;
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pub static WASM32_UNSIGNED_INT_SIZE: c_uchar;
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pub static WASM32_UNSIGNED_INT_ALIGN: c_uchar;
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pub static WASM32_SIZE_T_SIZE: c_uchar;
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pub static WASM32_SIZE_T_ALIGN: c_uchar;
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pub static WASM32_UNSIGNED_CHAR_SIZE: c_uchar;
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pub static WASM32_UNSIGNED_CHAR_ALIGN: c_uchar;
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pub static WASM32_PTR_SIZE: c_uchar;
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pub static WASM32_PTR_ALIGN: c_uchar;
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}
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unsafe {
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assert_eq!(size_of::<c_int>(), WASM32_INT_SIZE as usize);
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assert_eq!(align_of::<c_int>(), WASM32_INT_ALIGN as usize);
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assert_eq!(size_of::<c_uint>(), WASM32_UNSIGNED_INT_SIZE as usize);
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assert_eq!(align_of::<c_uint>(), WASM32_UNSIGNED_INT_ALIGN as usize);
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assert_eq!(size_of::<size_t>(), WASM32_SIZE_T_SIZE as usize);
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assert_eq!(align_of::<size_t>(), WASM32_SIZE_T_ALIGN as usize);
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assert_eq!(size_of::<c_uchar>(), WASM32_UNSIGNED_CHAR_SIZE as usize);
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assert_eq!(align_of::<c_uchar>(), WASM32_UNSIGNED_CHAR_ALIGN as usize);
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assert_eq!(size_of::<*const ()>(), WASM32_PTR_SIZE as usize);
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assert_eq!(align_of::<*const ()>(), WASM32_PTR_ALIGN as usize);
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}
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}
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