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fix: support #[handle_result] in ABI macro #858

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merged 4 commits into from
Jul 13, 2022
Merged

fix: support #[handle_result] in ABI macro #858

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f584297
support handle_result in abi macro
itegulov Jun 28, 2022
c505c1a
address comments
itegulov Jul 12, 2022
e258372
clarify handle_result compilation errors
itegulov Jul 12, 2022
10357da
Merge branch 'master' into daniyar/abi-handle-result
itegulov Jul 13, 2022
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35 changes: 32 additions & 3 deletions near-sdk-macros/src/core_impl/abi/abi_generator.rs
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
use crate::core_impl::utils;
use crate::core_impl::{utils, AttrSigInfo};
use crate::core_impl::{BindgenArgType, SerializerType};
use crate::{ImplItemMethodInfo, MethodType};
use proc_macro2::{Span, TokenStream as TokenStream2};
use quote::quote;
use syn::spanned::Spanned;
use syn::ReturnType;

impl ImplItemMethodInfo {
Expand Down Expand Up @@ -45,8 +46,8 @@ impl ImplItemMethodInfo {
&self.attr_signature_info.method_type,
&MethodType::Init | &MethodType::InitIgnoreState
);
let is_payable = self.attr_signature_info.is_payable;
let is_private = self.attr_signature_info.is_private;
let AttrSigInfo { is_payable, is_private, is_handles_result, .. } =
self.attr_signature_info;

let mut params = Vec::<TokenStream2>::new();
let mut callbacks = Vec::<TokenStream2>::new();
Expand Down Expand Up @@ -126,6 +127,34 @@ impl ImplItemMethodInfo {
None
}
}
ReturnType::Type(_, ty) if utils::type_is_result(ty) && is_handles_result => {
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let ty = if let Some(ty) = utils::extract_ok_type(ty) {
ty
} else {
return syn::Error::new_spanned(
ty,
"Function marked with #[handle_result] should have return type Result<T, PromiseError>",
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)
.into_compile_error();
};
let serialization_type =
abi_serialization_type(&self.attr_signature_info.result_serializer);
quote! {
Some(
near_sdk::__private::AbiType {
type_schema: gen.subschema_for::<#ty>(),
serialization_type: #serialization_type,
}
)
}
}
ReturnType::Type(_, ty) if is_handles_result => {
return syn::Error::new(
ty.span(),
"Method marked with #[handle_result] should return Result<T, E>.",
)
.to_compile_error();
}
ReturnType::Type(_, ty) => {
let serialization_type =
abi_serialization_type(&self.attr_signature_info.result_serializer);
Expand Down