miniextendr_macros::rust_conversion_builder

Struct LayeredValue

struct LayeredValue {
    leaf: ChoiceLeaf,
    choice_ty: Type,
    boxed: bool,
}

Expand description

The innermost value of a layered choice parameter.

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§leaf: ChoiceLeaf§choice_ty: Type

The decoded type: the MatchArg type of a scalar, the element type of a several_ok container, the string type of a choices value (lifetimes erased).

§boxed: bool

A Box<[T]> container, converted from the decoded Vec<T>.

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impl LayeredValue

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fn new(value: &Type, leaf: ChoiceLeaf) -> Self

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fn apply(&self, layers: &[ChoiceLayer<'_>], sexp: &TokenStream) -> TokenStream

layers over this value, decoding the argument sexp: the outermost layer’s helper called on sexp with the decoder of the rest.

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fn decoder(&self, layers: &[ChoiceLayer<'_>]) -> TokenStream

layers over this value as a decoder (FnOnce(SEXP) -> Result<_, _>): a function path where one exists, a closure otherwise.

Auto Trait Implementations§

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impl RefUnwindSafe for LayeredValue

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impl UnsafeUnpin for LayeredValue

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impl UnwindSafe for LayeredValue

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> SizeHint for T
where T: ?Sized,

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default fn lower_bound(&self) -> usize

🔬This is a nightly-only experimental API. (core_io_internals)

Returns a lower bound on the number of elements this container-like item contains. For example, an array [u8; 12] could return any value between 0 and 12 inclusively as a correct implementation. Read more

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default fn upper_bound(&self) -> Option<usize>

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an upper bound on the number of elements this container-like item contains if it can be determined, otherwise None. Read more

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final fn size_hint(&self) -> (usize, Option<usize>)

🔬This is a nightly-only experimental API. (core_io_internals)

Returns an estimate for the number of elements this container like type contains. Read more

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