Implement mutators for singular primitive fields with presence
PiperOrigin-RevId: 574485191
diff --git a/rust/vtable.rs b/rust/vtable.rs
index 6d6e4e9..2327e56 100644
--- a/rust/vtable.rs
+++ b/rust/vtable.rs
@@ -258,6 +258,15 @@
pub(crate) getter: unsafe extern "C" fn(msg: RawMessage) -> T,
}
+#[doc(hidden)]
+#[derive(Debug)]
+/// A generic thunk vtable for mutating an `optional` primitive field.
+pub struct PrimitiveOptionalMutVTable<T> {
+ pub(crate) base: PrimitiveVTable<T>,
+ pub(crate) clearer: unsafe extern "C" fn(msg: RawMessage),
+ pub(crate) default: T,
+}
+
impl<T> PrimitiveVTable<T> {
#[doc(hidden)]
pub const fn new(
@@ -269,6 +278,19 @@
}
}
+impl<T> PrimitiveOptionalMutVTable<T> {
+ #[doc(hidden)]
+ pub const fn new(
+ _private: Private,
+ getter: unsafe extern "C" fn(msg: RawMessage) -> T,
+ setter: unsafe extern "C" fn(msg: RawMessage, val: T),
+ clearer: unsafe extern "C" fn(msg: RawMessage),
+ default: T,
+ ) -> Self {
+ Self { base: PrimitiveVTable { getter, setter }, clearer, default }
+ }
+}
+
macro_rules! impl_raw_vtable_mutator_get_set {
($($t:ty),*) => {
$(
@@ -398,3 +420,36 @@
self
}
}
+
+macro_rules! impl_raw_vtable_optional_mutator_data {
+ ($($t:ty),*) => {
+ $(
+ impl<'msg> RawVTableOptionalMutatorData<'msg, $t> {
+ pub(crate) fn set_absent_to_default(self) -> Self {
+ // SAFETY:
+ // - `msg_ref` is valid for the lifetime of `RawVTableOptionalMutatorData` as
+ // promised by the caller of `new`.
+ self.set(self.vtable.default)
+ }
+
+ pub(crate) fn set(self, val: $t) -> Self {
+ // SAFETY:
+ // - `msg_ref` is valid for the lifetime of `RawVTableOptionalMutatorData` as
+ // promised by the caller of `new`.
+ unsafe { (self.vtable.base.setter)(self.msg_ref.msg(), val.into()) }
+ self
+ }
+
+ pub(crate) fn clear(self) -> Self {
+ // SAFETY:
+ // - `msg_ref` is valid for the lifetime of `RawVTableOptionalMutatorData` as
+ // promised by the caller of `new`.
+ unsafe { (self.vtable.clearer)(self.msg_ref.msg()) }
+ self
+ }
+ }
+ )*
+ }
+}
+
+impl_raw_vtable_optional_mutator_data!(bool, f32, f64, i32, i64, u32, u64);
