Add seriailize and deserialize usize

[ailisp]

As @olonho and other libs (serde, bincode, etc.) point out, this is not a hack, it serialize usize as if it were u64. It deserialize usize as if it were u64, and convert to usize. When overflow on deserialize, it return error

[ailisp]

Hmm run these pass locally:

• cargo fmt --all -- --check
• cargo build --verbose
• cargo test --verbose
• cd borsh && cargo test --verbose --no-default-features

And fail on ci doesn't seem to revelant to the change (no usize in the enum), any ideas?
10:34

failures:---- enum_schema::tests::complex_enum_generics stdout ----thread 'enum_schema::tests::complex_enum_generics' panicked at 'assertion failed: `(left == right)`  left: `"impl < C , W > borsh :: BorshSchema for A < C , W > where C : borsh :: BorshSchema , W : borsh :: BorshSchema { fn declaration () -> borsh :: schema :: Declaration { let params = borsh :: maybestd :: vec ! [< C > :: declaration () , < W > :: declaration ()] ; format ! (r#\"{}<{}>\"# , \"A\" , params . join (\", \")) } fn add_definitions_recursively (definitions : & mut borsh :: maybestd :: collections :: HashMap < borsh :: schema :: Declaration , borsh :: schema :: Definition >) { # [derive (borsh :: BorshSchema)] struct ABacon < C , W > (# [borsh_skip] :: core :: marker :: PhantomData < (C , W) >) ; # [derive (borsh :: BorshSchema)] struct AEggs < C , W > (# [borsh_skip] :: core :: marker :: PhantomData < (C , W) >) ; # [derive (borsh :: BorshSchema)] struct ASalad < C , W > (Tomatoes , C , Oil , # [borsh_skip] :: core :: marker :: PhantomData < (C , W) >) ; # [derive (borsh :: BorshSchema)] struct ASausage < C , W > { wrapper : W , filling : Filling , # [borsh_skip] borsh_schema_phantom_data : :: core :: marker :: PhantomData < (C , W) > } < ABacon < C , W > > :: add_definitions_recursively (definitions) ; < AEggs < C , W > > :: add_definitions_recursively (definitions) ; < ASalad < C , W > > :: add_definitions_recursively (definitions) ; < ASausage < C , W > > :: add_definitions_recursively (definitions) ; let variants = borsh :: maybestd :: vec ! [(\"Bacon\" . to_string () , < ABacon < C , W > > :: declaration ()) , (\"Eggs\" . to_string () , < AEggs < C , W > > :: declaration ()) , (\"Salad\" . to_string () , < ASalad < C , W > > :: declaration ()) , (\"Sausage\" . to_string () , < ASausage < C , W > > :: declaration ())] ; let definition = borsh :: schema :: Definition :: Enum { variants } ; Self :: add_definition (Self :: declaration () , definition , definitions) ; } }"`, right: `"impl < C , W > borsh :: BorshSchema for A < C , W > where C : borsh :: BorshSchema , W : borsh :: BorshSchema { fn declaration () -> borsh :: schema :: Declaration { let params = borsh :: maybestd :: vec ! [< C > :: declaration () , < W > :: declaration ()] ; format ! (r#\"{}<{}>\"# , \"A\" , params . join (\", \")) } fn add_definitions_recursively (definitions : & mut borsh :: maybestd :: collections :: HashMap < borsh :: schema :: Declaration , borsh :: schema :: Definition >) { # [derive (borsh :: BorshSchema)] struct ABacon < C , W > (# [borsh_skip] :: core :: marker :: PhantomData < (C , W ,) >) ; # [derive (borsh :: BorshSchema)] struct AEggs < C , W > (# [borsh_skip] :: core :: marker :: PhantomData < (C , W ,) >) ; # [derive (borsh :: BorshSchema)] struct ASalad < C , W > (Tomatoes , C , Oil , # [borsh_skip] :: core :: marker :: PhantomData < (C , W ,) >) ; # [derive (borsh :: BorshSchema)] struct ASausage < C , W > { wrapper : W , filling : Filling , # [borsh_skip] borsh_schema_phantom_data : :: core :: marker :: PhantomData < (C , W ,) > } < ABacon < C , W > > :: add_definitions_recursively (definitions) ; < AEggs < C , W > > :: add_definitions_recursively (definitions) ; < ASalad < C , W > > :: add_definitions_recursively (definitions) ; < ASausage < C , W > > :: add_definitions_recursively (definitions) ; let variants = borsh :: maybestd :: vec ! [(\"Bacon\" . to_string () , < ABacon < C , W > > :: declaration ()) , (\"Eggs\" . to_string () , < AEggs < C , W > > :: declaration ()) , (\"Salad\" . to_string () , < ASalad < C , W > > :: declaration ()) , (\"Sausage\" . to_string () , < ASausage < C , W > > :: declaration ())] ; let definition = borsh :: schema :: Definition :: Enum { variants } ; Self :: add_definition (Self :: declaration () , definition , definitions) ; } }"`', borsh-schema-derive-internal/src/enum_schema.rs:138:9note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[olonho]

Fine, maybe better wording in error message.

[frol]

I am not 100% sold on adding support for usize since someone can shoot themselves in the foot, but if you think it makes sense, I am fine with that.