Macro impl_case_map_unfold_v1

macro_rules! impl_case_map_unfold_v1 {
    ($ provider : ty) => { ... };
    ($ provider : ty , ITER) => { ... };
    ($ provider : ty , DRY) => { ... };
    ($ provider : ty , DRY , ITER) => { ... };
}

Implement DataProvider<CaseMapUnfoldV1> on the given struct using the data hardcoded in this file. This allows the struct to be used with icu’s _unstable constructors.

Using this implementation will embed the following data in the binary’s data segment:

• 968B¹ for the singleton data struct

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1. these numbers can be smaller in practice due to linker deduplication ↩