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add MethodError implementation for SolError derive macro #341

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add MethodError implementation for SolError derive macro #341

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20 changes: 20 additions & 0 deletions stylus-proc/src/macros/derive/solidity_error/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -70,6 +70,17 @@ impl DeriveSolidityError {
}
}
}

fn method_error_impl(&self) -> syn::ItemImpl {
let name = &self.name;
parse_quote! {
impl stylus_sdk::stylus_core::errors::MethodError for #name {
fn encode(self) -> alloc::vec::Vec<u8> {
self.into()
}
}
}
}
}

impl From<&syn::ItemEnum> for DeriveSolidityError {
Expand Down Expand Up @@ -101,6 +112,7 @@ impl ToTokens for DeriveSolidityError {
from_impl.to_tokens(tokens);
}
self.vec_u8_from_impl().to_tokens(tokens);
self.method_error_impl().to_tokens(tokens);
Extension::codegen(self).to_tokens(tokens);
}
}
Expand Down Expand Up @@ -160,5 +172,13 @@ mod tests {
}
},
);
assert_ast_eq(
derived.method_error_impl(),
parse_quote!{
impl stylus_sdk::stylus_core::errors::MethodError for MyError {
fn encode(self) -> alloc::vec::Vec<u8> { self.into() }
}
}
)
}
}