Struct databake::converter::IteratorAsRefSlice

#[repr(transparent)]
pub struct IteratorAsRefSlice<B, T>(pub B, pub PhantomData<T>)
where
    for<'a> &'a B: IntoIterator<Item = &'a T>,
    T: Bake;

Let Bake output a &'static [T] for anything that can be iterated over.

It can be helpful if the type needs to be constructed (e.g. Vec<T>) but should result in a &'static [T].

This requires that the crate using the generated data needs a different struct.

use databake::{converter::IteratorAsRefSlice, Bake};

#[derive(Bake, Default)]
#[databake(path = my_crate)]
struct Data {
    numbers: IteratorAsRefSlice<Vec<usize>, usize>, // can be written as `VecAsRefSlice<usize>`
}

let mut data = Data::default();
data.numbers.push(6);

assert_eq!(
    data.bake(&Default::default()).to_string(),
    r#"my_crate :: Data { numbers : & [6usize ,] , }"#
);

mod my_crate {
    struct Data {
        numbers: &'static [usize],
    }
}

Tuple Fields

0: B

1: PhantomData<T>

Implementations

impl<B, T> IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

pub fn into(self) -> B

Trait Implementations

impl<B, T> Bake for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

fn bake(&self, ctx: &CrateEnv) -> TokenStream

Returns a TokenStream that would evaluate to self.

impl<B, T> BakeSize for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: BakeSize,

fn borrows_size(&self) -> usize

Returns the size

impl<B: Default, T> Default for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake + Default,

fn default() -> IteratorAsRefSlice<B, T>

Returns the “default value” for a type.

impl<B, T> Deref for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

type Target = B

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<B, T> DerefMut for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<B, T> From<B> for IteratorAsRefSlice<B, T>

where for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

fn from(value: B) -> Self

Converts to this type from the input type.

impl<B, T> FromIterator<T> for IteratorAsRefSlice<B, T>

where B: FromIterator<T>, for<'a> &'a B: IntoIterator<Item = &'a T>, T: Bake,

fn from_iter<I: IntoIterator<Item = T>>(iter: I) -> Self

Creates a value from an iterator.