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