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rust-bitcoin-unsafe-fast
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Move const_assert to bitcoin_internals 

This is an internal macro, now that we have the `internals` crate put
`const_assert` in it.
This commit is contained in:
Tobin C. Harding 2022-09-20 14:56:34 +10:00
parent 5a8a5ff6c9
commit 53b681b838
4 changed files with 11 additions and 11 deletions
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2
bitcoin/src/consensus/encode.rs
View File

@ -219,7 +219,7 @@ macro_rules! decoder_fn {
($name:ident, $val_type:ty, $readfn:ident, $byte_len: expr) => {
#[inline]
fn $name(&mut self) -> Result<$val_type, Error> {
$crate::internal_macros::const_assert!(::core::mem::size_of::<$val_type>() == $byte_len);
bitcoin_internals::const_assert!(core::mem::size_of::<$val_type>() == $byte_len);
let mut val = [0; $byte_len];
self.read_exact(&mut val[..]).map_err(Error::Io)?;
Ok(endian::$readfn(&val))

8
bitcoin/src/internal_macros.rs
View File

@ -465,11 +465,3 @@ macro_rules! impl_bytes_newtype {
};
}
pub(crate) use impl_bytes_newtype;
/// Asserts a boolean expression at compile time.
macro_rules! const_assert {
($x:expr) => {{
const _: [(); 0 - !$x as usize] = [];
}};
}
pub(crate) use const_assert;

4
bitcoin/src/util/endian.rs
View File

@ -30,7 +30,7 @@ macro_rules! define_be_to_array {
($name: ident, $type: ty, $byte_len: expr) => {
#[inline]
pub fn $name(val: $type) -> [u8; $byte_len] {
$crate::internal_macros::const_assert!(::core::mem::size_of::<$type>() == $byte_len);
bitcoin_internals::const_assert!(core::mem::size_of::<$type>() == $byte_len);
let mut res = [0; $byte_len];
for i in 0..$byte_len {
res[i] = ((val >> ($byte_len - i - 1)*8) & 0xff) as u8;
@ -43,7 +43,7 @@ macro_rules! define_le_to_array {
($name: ident, $type: ty, $byte_len: expr) => {
#[inline]
pub fn $name(val: $type) -> [u8; $byte_len] {
$crate::internal_macros::const_assert!(::core::mem::size_of::<$type>() == $byte_len);
bitcoin_internals::const_assert!(core::mem::size_of::<$type>() == $byte_len);
let mut res = [0; $byte_len];
for i in 0..$byte_len {
res[i] = ((val >> i*8) & 0xff) as u8;

8
internals/src/macros.rs
View File

@ -73,3 +73,11 @@ macro_rules! debug_from_display {
}
};
}
/// Asserts a boolean expression at compile time.
#[macro_export]
macro_rules! const_assert {
($x:expr) => {{
const _: [(); 0 - !$x as usize] = [];
}};
}