[−][src]Struct ouroboros_examples::BoxAndRef
A simple struct which contains a Box<i32>
and a &'this i32
.
Implementations
impl BoxAndRef
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pub(crate) fn new(
data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> &'this i32
) -> Self
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data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> &'this i32
) -> Self
Constructs a new instance of this self-referential struct. (See also BoxAndRefBuilder::build()
). Each argument is a field of the new struct. Fields that refer to other fields inside the struct are initialized using functions instead of directly passing their value. The arguments are as follows:
Argument | Suggested Use |
---|---|
data | Directly pass in the value this field should contain |
data_ref_builder | Use a function or closure: (data: &_) -> data_ref: _ |
pub(crate) fn try_new<Error_>(
data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> Result<&'this i32, Error_>
) -> Result<Self, Error_>
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data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> Result<&'this i32, Error_>
) -> Result<Self, Error_>
(See also BoxAndRefTryBuilder::try_build()
.) Like new
, but builders for self-referencing fields can return results. If any of them fail, Err
is returned. If all of them succeed, Ok
is returned. The arguments are as follows:
Argument | Suggested Use |
---|---|
data | Directly pass in the value this field should contain |
data_ref_builder | Use a function or closure: (data: &_) -> Result<data_ref: _, Error_> |
pub(crate) fn try_new_or_recover<Error_>(
data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> Result<&'this i32, Error_>
) -> Result<Self, (Error_, Heads)>
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data: Box<i32>,
data_ref_builder: impl for<'this> FnOnce(&'this <Box<i32> as Deref>::Target) -> Result<&'this i32, Error_>
) -> Result<Self, (Error_, Heads)>
(See also BoxAndRefTryBuilder::try_build_or_recover()
.) Like try_new
, but all head fields are returned in the case of an error. The arguments are as follows:
Argument | Suggested Use |
---|---|
data | Directly pass in the value this field should contain |
data_ref_builder | Use a function or closure: (data: &_) -> Result<data_ref: _, Error_> |
pub(crate) fn with_data<'outer_borrow, ReturnType>(
&'outer_borrow self,
user: impl for<'this> FnOnce(&'outer_borrow Box<i32>) -> ReturnType
) -> ReturnType
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&'outer_borrow self,
user: impl for<'this> FnOnce(&'outer_borrow Box<i32>) -> ReturnType
) -> ReturnType
Provides limited immutable access to data
. This method was generated because the contents of data
are immutably borrowed by other fields.
pub(crate) fn borrow_data<'this>(&'this self) -> &'this Box<i32>
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Provides limited immutable access to data
. This method was generated because the contents of data
are immutably borrowed by other fields.
pub(crate) fn with_data_ref<'outer_borrow, ReturnType>(
&'outer_borrow self,
user: impl for<'this> FnOnce(&'outer_borrow &'this i32) -> ReturnType
) -> ReturnType
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&'outer_borrow self,
user: impl for<'this> FnOnce(&'outer_borrow &'this i32) -> ReturnType
) -> ReturnType
Provides an immutable reference to data_ref
. This method was generated because data_ref
is a tail field.
pub(crate) fn with_data_ref_mut<'outer_borrow, ReturnType>(
&'outer_borrow mut self,
user: impl for<'this> FnOnce(&'outer_borrow mut &'this i32) -> ReturnType
) -> ReturnType
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&'outer_borrow mut self,
user: impl for<'this> FnOnce(&'outer_borrow mut &'this i32) -> ReturnType
) -> ReturnType
Provides a mutable reference to data_ref
. This method was generated because data_ref
is a tail field. No borrow_data_ref_mut
function was generated because Rust's borrow checker is currently unable to guarantee that such a method would be used safely.
pub(crate) fn borrow_data_ref<'this>(&'this self) -> &'this &'this i32
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Provides a mutable reference to data_ref
. This method was generated because data_ref
is a tail field. No borrow_data_ref_mut
function was generated because Rust's borrow checker is currently unable to guarantee that such a method would be used safely.
pub(crate) fn with<'outer_borrow, ReturnType>(
&'outer_borrow self,
user: impl for<'this> FnOnce(BorrowedFields<'outer_borrow, 'this>) -> ReturnType
) -> ReturnType
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&'outer_borrow self,
user: impl for<'this> FnOnce(BorrowedFields<'outer_borrow, 'this>) -> ReturnType
) -> ReturnType
This method provides immutable references to all tail and immutably borrowed fields.
pub(crate) fn with_mut<'outer_borrow, ReturnType>(
&'outer_borrow mut self,
user: impl for<'this> FnOnce(BorrowedMutFields<'outer_borrow, 'this>) -> ReturnType
) -> ReturnType
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&'outer_borrow mut self,
user: impl for<'this> FnOnce(BorrowedMutFields<'outer_borrow, 'this>) -> ReturnType
) -> ReturnType
This method provides mutable references to all tail fields.
pub(crate) fn into_heads(self) -> Heads
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This function drops all internally referencing fields and returns only the head fields of this struct.
Auto Trait Implementations
impl RefUnwindSafe for BoxAndRef
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impl Send for BoxAndRef
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impl Sync for BoxAndRef
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impl Unpin for BoxAndRef
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impl UnwindSafe for BoxAndRef
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,