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// Protocol Buffers - Google's data interchange format
// Copyright 2023 Google LLC. All rights reserved.
//
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file or at
// https://developers.google.com/open-source/licenses/bsd
use crate::__internal::Private;
use crate::__runtime::InnerPrimitiveMut;
use crate::vtable::{PrimitiveVTable, ProxiedWithRawVTable};
use crate::{Mut, MutProxy, Proxied, SettableValue, View, ViewProxy};
#[derive(Debug)]
pub struct PrimitiveMut<'a, T: ProxiedWithRawVTable> {
inner: InnerPrimitiveMut<'a, T>,
}
impl<'a, T: ProxiedWithRawVTable> PrimitiveMut<'a, T> {
#[doc(hidden)]
pub fn from_inner(_private: Private, inner: InnerPrimitiveMut<'a, T>) -> Self {
Self { inner }
}
}
unsafe impl<'a, T: ProxiedWithRawVTable> Sync for PrimitiveMut<'a, T> {}
macro_rules! impl_singular_primitives {
($($t:ty),*) => {
$(
impl Proxied for $t {
type View<'a> = $t;
type Mut<'a> = PrimitiveMut<'a, $t>;
}
impl<'a> ViewProxy<'a> for $t {
type Proxied = $t;
fn as_view(&self) -> View<'_, Self::Proxied> {
*self
}
fn into_view<'shorter>(self) -> View<'shorter, Self::Proxied> {
self
}
}
impl<'a> ViewProxy<'a> for PrimitiveMut<'a, $t> {
type Proxied = $t;
fn as_view(&self) -> View<'_, Self::Proxied> {
self.get()
}
fn into_view<'shorter>(self) -> View<'shorter, Self::Proxied> {
self.get()
}
}
impl<'a> MutProxy<'a> for PrimitiveMut<'a, $t> {
fn as_mut(&mut self) -> Mut<'_, Self::Proxied> {
PrimitiveMut::from_inner(Private, self.inner)
}
fn into_mut<'shorter>(self) -> Mut<'shorter, Self::Proxied>
where 'a: 'shorter,
{
self
}
}
impl SettableValue<$t> for $t {
fn set_on(self, _private: Private, mutator: Mut<'_, $t>) {
unsafe { (mutator.inner).set(self) };
}
}
impl<'a> PrimitiveMut<'a, $t> {
pub fn set(&mut self, val: impl SettableValue<$t>) {
val.set_on(Private, self.as_mut());
}
pub fn get(&self) -> $t {
self.inner.get()
}
pub fn clear(&mut self) {
// The default value for a boolean field is false and 0 for numerical types. It
// matches the Rust default values for corresponding types. Let's use this fact.
SettableValue::<$t>::set_on(<$t>::default(), Private, MutProxy::as_mut(self));
}
}
impl ProxiedWithRawVTable for $t {
type VTable = PrimitiveVTable<$t>;
fn make_view(
_private: Private,
mut_inner: InnerPrimitiveMut<'_, Self>
) -> View<'_, Self> {
mut_inner.get()
}
fn make_mut(_private: Private, inner: InnerPrimitiveMut<'_, Self>) -> Mut<'_, Self> {
PrimitiveMut::from_inner(Private, inner)
}
}
)*
}
}
impl_singular_primitives!(bool, f32, f64, i32, i64, u32, u64);
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