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gst/format: separate non trait ops format macros from common ops

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François Laignel 2022-09-16 18:39:35 +02:00 committed by François Laignel
parent 432cb36611
commit 0d229b4c69
1 changed files with 103 additions and 87 deletions
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190
gstreamer/src/macros.rs
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@ -1,6 +1,6 @@
// Take a look at the license at the top of the repository in the LICENSE file.
macro_rules! impl_op_same(
macro_rules! impl_trait_op_same(
($name:ident, $op:ident, $op_name:ident, $op_assign:ident, $op_assign_name:ident) => {
impl<RHS: Borrow<$name>> ops::$op<RHS> for $name {
type Output = Self;
@ -26,7 +26,85 @@ macro_rules! impl_op_same(
};
);
macro_rules! impl_op_inner_type(
macro_rules! impl_non_trait_op_same(
($name:ident, $inner_type:ty) => {
impl $name {
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn checked_add(self, rhs: Self) -> Option<Self> {
match self.0.checked_add(rhs.0) {
Some(res) if res <= Self::MAX.0 => Some(Self(res)),
_ => None,
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn saturating_add(self, rhs: Self) -> Self {
let res = self.0.saturating_add(rhs.0);
if res < Self::MAX.0 {
Self(res)
} else {
Self::MAX
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub fn overflowing_add(self, rhs: Self) -> (Self, bool) {
let self_u128 = self.0 as u128;
let rhs_128 = rhs.0 as u128;
let res_u128 = self_u128 + rhs_128;
if res_u128 <= Self::MAX.0 as u128 {
(Self(<$inner_type>::try_from(res_u128).unwrap()), false)
} else {
(Self(<$inner_type>::try_from((res_u128 - Self::MAX.0 as u128 - 1) as u64).unwrap()), true)
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub fn wrapping_add(self, rhs: Self) -> Self {
self.overflowing_add(rhs).0
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
// FIXME Can't use `map` in a `const fn` as of rustc 1.53.0-beta.2
#[allow(clippy::manual_map)]
pub const fn checked_sub(self, rhs: Self) -> Option<Self> {
match self.0.checked_sub(rhs.0) {
Some(res) => Some(Self(res)),
None => None,
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn saturating_sub(self, rhs: Self) -> Self {
Self(self.0.saturating_sub(rhs.0))
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool) {
if self.0 >= rhs.0 {
(Self(self.0 - rhs.0), false)
} else {
(Self(Self::MAX.0 - rhs.0 + self.0 + 1), true)
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn wrapping_sub(self, rhs: Self) -> Self {
self.overflowing_sub(rhs).0
}
}
};
);
macro_rules! impl_trait_op_inner_type(
($name:ident, $inner_type:ty, $op:ident, $op_name:ident, $op_assign:ident, $op_assign_name:ident) => {
impl ops::$op<$inner_type> for $name {
type Output = $name;
@ -68,55 +146,9 @@ macro_rules! impl_op_inner_type(
};
);
macro_rules! impl_common_ops_for_newtype_uint(
macro_rules! impl_non_trait_op_inner_type(
($name:ident, $inner_type:ty) => {
impl $name {
pub const ZERO: Self = Self(0);
pub const NONE: Option<Self> = None;
pub const fn is_zero(self) -> bool {
self.0 == Self::ZERO.0
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn checked_add(self, rhs: Self) -> Option<Self> {
match self.0.checked_add(rhs.0) {
Some(res) if res <= Self::MAX.0 => Some(Self(res)),
_ => None,
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn saturating_add(self, rhs: Self) -> Self {
let res = self.0.saturating_add(rhs.0);
if res < Self::MAX.0 {
Self(res)
} else {
Self::MAX
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub fn overflowing_add(self, rhs: Self) -> (Self, bool) {
let self_u128 = self.0 as u128;
let rhs_128 = rhs.0 as u128;
let res_u128 = self_u128 + rhs_128;
if res_u128 <= Self::MAX.0 as u128 {
(Self(<$inner_type>::try_from(res_u128).unwrap()), false)
} else {
(Self(<$inner_type>::try_from((res_u128 - Self::MAX.0 as u128 - 1) as u64).unwrap()), true)
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub fn wrapping_add(self, rhs: Self) -> Self {
self.overflowing_add(rhs).0
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn checked_div(self, rhs: $inner_type) -> Option<Self> {
@ -173,50 +205,34 @@ macro_rules! impl_common_ops_for_newtype_uint(
None => None,
}
}
}
};
);
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
// FIXME Can't use `map` in a `const fn` as of rustc 1.53.0-beta.2
#[allow(clippy::manual_map)]
pub const fn checked_sub(self, rhs: Self) -> Option<Self> {
match self.0.checked_sub(rhs.0) {
Some(res) => Some(Self(res)),
None => None,
}
}
macro_rules! impl_common_ops_for_newtype_uint(
($name:ident, $inner_type:ty) => {
impl $name {
pub const ZERO: Self = Self(0);
pub const NONE: Option<Self> = None;
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn saturating_sub(self, rhs: Self) -> Self {
Self(self.0.saturating_sub(rhs.0))
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn overflowing_sub(self, rhs: Self) -> (Self, bool) {
if self.0 >= rhs.0 {
(Self(self.0 - rhs.0), false)
} else {
(Self(Self::MAX.0 - rhs.0 + self.0 + 1), true)
}
}
#[must_use = "this returns the result of the operation, without modifying the original"]
#[inline]
pub const fn wrapping_sub(self, rhs: Self) -> Self {
self.overflowing_sub(rhs).0
pub const fn is_zero(self) -> bool {
self.0 == Self::ZERO.0
}
}
impl_op_same!($name, Add, add, AddAssign, add_assign);
impl_op_same!($name, Sub, sub, SubAssign, sub_assign);
impl_op_same!($name, Mul, mul, MulAssign, mul_assign);
impl_op_same!($name, Div, div, DivAssign, div_assign);
impl_op_same!($name, Rem, rem, RemAssign, rem_assign);
impl_trait_op_same!($name, Add, add, AddAssign, add_assign);
impl_trait_op_same!($name, Sub, sub, SubAssign, sub_assign);
impl_trait_op_same!($name, Mul, mul, MulAssign, mul_assign);
impl_trait_op_same!($name, Div, div, DivAssign, div_assign);
impl_trait_op_same!($name, Rem, rem, RemAssign, rem_assign);
impl_op_inner_type!($name, $inner_type, Mul, mul, MulAssign, mul_assign);
impl_op_inner_type!($name, $inner_type, Div, div, DivAssign, div_assign);
impl_op_inner_type!($name, $inner_type, Rem, rem, RemAssign, rem_assign);
impl_non_trait_op_same!($name, $inner_type);
impl_trait_op_inner_type!($name, $inner_type, Mul, mul, MulAssign, mul_assign);
impl_trait_op_inner_type!($name, $inner_type, Div, div, DivAssign, div_assign);
impl_trait_op_inner_type!($name, $inner_type, Rem, rem, RemAssign, rem_assign);
impl_non_trait_op_inner_type!($name, $inner_type);
impl<ND: Borrow<$inner_type>> MulDiv<ND> for $name {
type Output = $name;