summaryrefslogtreecommitdiff
path: root/rust/kernel/init/macros.rs
diff options
context:
space:
mode:
Diffstat (limited to 'rust/kernel/init/macros.rs')
-rw-r--r--rust/kernel/init/macros.rs47
1 files changed, 32 insertions, 15 deletions
diff --git a/rust/kernel/init/macros.rs b/rust/kernel/init/macros.rs
index cb6e61b6c50b..02ecedc4ae7a 100644
--- a/rust/kernel/init/macros.rs
+++ b/rust/kernel/init/macros.rs
@@ -250,7 +250,7 @@
//! // error type is `Infallible`) we will need to drop this field if there
//! // is an error later. This `DropGuard` will drop the field when it gets
//! // dropped and has not yet been forgotten.
-//! let t = unsafe {
+//! let __t_guard = unsafe {
//! ::pinned_init::__internal::DropGuard::new(::core::addr_of_mut!((*slot).t))
//! };
//! // Expansion of `x: 0,`:
@@ -261,14 +261,14 @@
//! unsafe { ::core::ptr::write(::core::addr_of_mut!((*slot).x), x) };
//! }
//! // We again create a `DropGuard`.
-//! let x = unsafe {
+//! let __x_guard = unsafe {
//! ::kernel::init::__internal::DropGuard::new(::core::addr_of_mut!((*slot).x))
//! };
//! // Since initialization has successfully completed, we can now forget
//! // the guards. This is not `mem::forget`, since we only have
//! // `&DropGuard`.
-//! ::core::mem::forget(x);
-//! ::core::mem::forget(t);
+//! ::core::mem::forget(__x_guard);
+//! ::core::mem::forget(__t_guard);
//! // Here we use the type checker to ensure that every field has been
//! // initialized exactly once, since this is `if false` it will never get
//! // executed, but still type-checked.
@@ -461,16 +461,16 @@
//! {
//! unsafe { ::core::ptr::write(::core::addr_of_mut!((*slot).a), a) };
//! }
-//! let a = unsafe {
+//! let __a_guard = unsafe {
//! ::kernel::init::__internal::DropGuard::new(::core::addr_of_mut!((*slot).a))
//! };
//! let init = Bar::new(36);
//! unsafe { data.b(::core::addr_of_mut!((*slot).b), b)? };
-//! let b = unsafe {
+//! let __b_guard = unsafe {
//! ::kernel::init::__internal::DropGuard::new(::core::addr_of_mut!((*slot).b))
//! };
-//! ::core::mem::forget(b);
-//! ::core::mem::forget(a);
+//! ::core::mem::forget(__b_guard);
+//! ::core::mem::forget(__a_guard);
//! #[allow(unreachable_code, clippy::diverging_sub_expression)]
//! let _ = || {
//! unsafe {
@@ -538,6 +538,7 @@ macro_rules! __pin_data {
),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@body({ $($fields:tt)* }),
) => {
// We now use token munching to iterate through all of the fields. While doing this we
@@ -560,6 +561,9 @@ macro_rules! __pin_data {
@impl_generics($($impl_generics)*),
// The 'ty generics', the generics that will need to be specified on the impl blocks.
@ty_generics($($ty_generics)*),
+ // The 'decl generics', the generics that need to be specified on the struct
+ // definition.
+ @decl_generics($($decl_generics)*),
// The where clause of any impl block and the declaration.
@where($($($whr)*)?),
// The remaining fields tokens that need to be processed.
@@ -585,6 +589,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We found a PhantomPinned field, this should generally be pinned!
@fields_munch($field:ident : $($($(::)?core::)?marker::)?PhantomPinned, $($rest:tt)*),
@@ -607,6 +612,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($($rest)*),
@pinned($($pinned)* $($accum)* $field: ::core::marker::PhantomPinned,),
@@ -623,6 +629,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We reached the field declaration.
@fields_munch($field:ident : $type:ty, $($rest:tt)*),
@@ -640,6 +647,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($($rest)*),
@pinned($($pinned)* $($accum)* $field: $type,),
@@ -656,6 +664,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We reached the field declaration.
@fields_munch($field:ident : $type:ty, $($rest:tt)*),
@@ -673,6 +682,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($($rest)*),
@pinned($($pinned)*),
@@ -689,6 +699,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We found the `#[pin]` attr.
@fields_munch(#[pin] $($rest:tt)*),
@@ -705,6 +716,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($($rest)*),
// We do not include `#[pin]` in the list of attributes, since it is not actually an
@@ -724,6 +736,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We reached the field declaration with visibility, for simplicity we only munch the
// visibility and put it into `$accum`.
@@ -741,6 +754,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($field $($rest)*),
@pinned($($pinned)*),
@@ -757,6 +771,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// Some other attribute, just put it into `$accum`.
@fields_munch(#[$($attr:tt)*] $($rest:tt)*),
@@ -773,6 +788,7 @@ macro_rules! __pin_data {
@name($name),
@impl_generics($($impl_generics)*),
@ty_generics($($ty_generics)*),
+ @decl_generics($($decl_generics)*),
@where($($whr)*),
@fields_munch($($rest)*),
@pinned($($pinned)*),
@@ -789,6 +805,7 @@ macro_rules! __pin_data {
@name($name:ident),
@impl_generics($($impl_generics:tt)*),
@ty_generics($($ty_generics:tt)*),
+ @decl_generics($($decl_generics:tt)*),
@where($($whr:tt)*),
// We reached the end of the fields, plus an optional additional comma, since we added one
// before and the user is also allowed to put a trailing comma.
@@ -802,7 +819,7 @@ macro_rules! __pin_data {
) => {
// Declare the struct with all fields in the correct order.
$($struct_attrs)*
- $vis struct $name <$($impl_generics)*>
+ $vis struct $name <$($decl_generics)*>
where $($whr)*
{
$($fields)*
@@ -1192,14 +1209,14 @@ macro_rules! __init_internal {
// We use `paste!` to create new hygiene for `$field`.
::kernel::macros::paste! {
// SAFETY: We forget the guard later when initialization has succeeded.
- let [<$field>] = unsafe {
+ let [< __ $field _guard >] = unsafe {
$crate::init::__internal::DropGuard::new(::core::ptr::addr_of_mut!((*$slot).$field))
};
$crate::__init_internal!(init_slot($use_data):
@data($data),
@slot($slot),
- @guards([<$field>], $($guards,)*),
+ @guards([< __ $field _guard >], $($guards,)*),
@munch_fields($($rest)*),
);
}
@@ -1223,14 +1240,14 @@ macro_rules! __init_internal {
// We use `paste!` to create new hygiene for `$field`.
::kernel::macros::paste! {
// SAFETY: We forget the guard later when initialization has succeeded.
- let [<$field>] = unsafe {
+ let [< __ $field _guard >] = unsafe {
$crate::init::__internal::DropGuard::new(::core::ptr::addr_of_mut!((*$slot).$field))
};
$crate::__init_internal!(init_slot():
@data($data),
@slot($slot),
- @guards([<$field>], $($guards,)*),
+ @guards([< __ $field _guard >], $($guards,)*),
@munch_fields($($rest)*),
);
}
@@ -1255,14 +1272,14 @@ macro_rules! __init_internal {
// We use `paste!` to create new hygiene for `$field`.
::kernel::macros::paste! {
// SAFETY: We forget the guard later when initialization has succeeded.
- let [<$field>] = unsafe {
+ let [< __ $field _guard >] = unsafe {
$crate::init::__internal::DropGuard::new(::core::ptr::addr_of_mut!((*$slot).$field))
};
$crate::__init_internal!(init_slot($($use_data)?):
@data($data),
@slot($slot),
- @guards([<$field>], $($guards,)*),
+ @guards([< __ $field _guard >], $($guards,)*),
@munch_fields($($rest)*),
);
}