[Merged by Bors] - EnumVariantMeta derive #1972
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MinerSebas
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There are cases where we want an enum variant name. Right now the only way to do that with rust's std is to derive Debug, but this will also print out the variant's fields. This creates the unfortunate situation where we need to manually write out each variant's string name (ex: in #1963), which is both boilerplate-ey and error-prone. Crates such as `strum` exist for this reason, but it includes a lot of code and complexity that we don't need. This adds a dead-simple `EnumVariantMeta` derive that exposes `enum_variant_index` and `enum_variant_name` functions. This allows us to make cases like #1963 much cleaner (see the second commit). We might also be able to reuse this logic for `bevy_reflect` enum derives.
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ostwilkens
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There are cases where we want an enum variant name. Right now the only way to do that with rust's std is to derive Debug, but this will also print out the variant's fields. This creates the unfortunate situation where we need to manually write out each variant's string name (ex: in bevyengine#1963), which is both boilerplate-ey and error-prone. Crates such as `strum` exist for this reason, but it includes a lot of code and complexity that we don't need. This adds a dead-simple `EnumVariantMeta` derive that exposes `enum_variant_index` and `enum_variant_name` functions. This allows us to make cases like bevyengine#1963 much cleaner (see the second commit). We might also be able to reuse this logic for `bevy_reflect` enum derives.
vabrador
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There are cases where we want an enum variant name. Right now the only way to do that with rust's std is to derive Debug, but this will also print out the variant's fields. This creates the unfortunate situation where we need to manually write out each variant's string name (ex: in #1963), which is both boilerplate-ey and error-prone. Crates such as
strumexist for this reason, but it includes a lot of code and complexity that we don't need.This adds a dead-simple
EnumVariantMetaderive that exposesenum_variant_indexandenum_variant_namefunctions. This allows us to make cases like #1963 much cleaner (see the second commit). We might also be able to reuse this logic forbevy_reflectenum derives.