Macro icu_provider::export::make_exportable_provider

macro_rules! make_exportable_provider {
    ($provider:ty, [ $($(#[$cfg:meta])? $struct_m:ty),+, ]) => { ... };
}

This macro can be used on a data provider to allow it to be exported by ExportDriver.

Data generation ‘compiles’ data by using this data provider (which usually translates data from different sources and doesn’t have to be efficient) to generate data structs, and then writing them to an efficient format like BlobDataProvider or BakedDataProvider. The requirements for make_exportable_provider are:

• The data struct has to implement serde::Serialize and [databake::Bake]
• The provider needs to implement IterableDataProvider for all specified DataMarkers. This allows the generating code to know which DataIdentifierCows to export.