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to_value proc macro

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This commit is contained in:
nora 2024-04-15 19:56:05 +02:00
parent 7d28815065
commit f3c37539f0
4 changed files with 57 additions and 47 deletions
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57
terustform-macros/src/lib.rs
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@ -30,7 +30,7 @@ fn data_source_model_inner(
));
};
let terustform = quote!(::terustform::__derive_private);
let tf = quote!(::terustform::__derive_private);
let fields = fields
.named
@ -44,61 +44,74 @@ fn data_source_model_inner(
})
.collect::<Result<Vec<_>, _>>()?;
let field_extractions = fields.iter().map(|(name, ty)| {
let name_str = proc_macro2::Literal::string(&name.to_string());
quote! {
let #terustform::Some(#name) = obj.remove(#name_str) else {
return #terustform::Err(
#terustform::Diagnostics::error_string(
let #tf::Some(#name) = obj.remove(#name_str) else {
return #tf::Err(
#tf::Diagnostics::error_string(
format!("Expected property '{}', which was not present", #name_str),
).with_path(path.clone())
);
};
let #name = <#ty as #terustform::ValueModel>::from_value(
let #name = <#ty as #tf::ValueModel>::from_value(
#name,
&path.append_attribute_name(#terustform::ToOwned::to_owned(#name_str))
&path.append_attribute_name(#tf::ToOwned::to_owned(#name_str))
)?;
}
});
let constructor_fields = fields.iter().map(|(name, _)| quote! { #name, });
let to_value_fields = fields.iter().map(|(name, ty)| {
let name_str = proc_macro2::Literal::string(&name.to_string());
quote! { (#name_str, <#ty as #tf::ValueModel>::to_value(self.#name)), }
});
let (impl_generics, type_generics, where_clause) = input.generics.split_for_impl();
Ok(quote! {
#[automatically_derived]
impl #impl_generics #terustform::ValueModel
impl #impl_generics #tf::ValueModel
for #struct_name #type_generics #where_clause
{
fn from_value(v: #terustform::Value, path: &#terustform::AttrPath) -> #terustform::DResult<Self> {
fn from_value(v: #tf::Value, path: &#tf::AttrPath) -> #tf::DResult<Self> {
match v {
#terustform::BaseValue::Unknown => {
return #terustform::Err(#terustform::Diagnostics::with_path(
#terustform::Diagnostics::error_string(#terustform::ToOwned::to_owned("Expected object, found unknown value")),
#terustform::Clone::clone(&path),
#tf::BaseValue::Unknown => {
return #tf::Err(#tf::Diagnostics::with_path(
#tf::Diagnostics::error_string(#tf::ToOwned::to_owned("Expected object, found unknown value")),
#tf::Clone::clone(&path),
));
},
#terustform::BaseValue::Null => {
return #terustform::Err(#terustform::Diagnostics::with_path(
#terustform::Diagnostics::error_string(#terustform::ToOwned::to_owned("Expected object, found null value")),
#terustform::Clone::clone(&path),
#tf::BaseValue::Null => {
return #tf::Err(#tf::Diagnostics::with_path(
#tf::Diagnostics::error_string(#tf::ToOwned::to_owned("Expected object, found null value")),
#tf::Clone::clone(&path),
));
},
#terustform::BaseValue::Known(#terustform::ValueKind::Object(mut obj)) => {
#tf::BaseValue::Known(#tf::ValueKind::Object(mut obj)) => {
#(#field_extractions)*
Ok(#struct_name {
#(#constructor_fields)*
})
},
#terustform::BaseValue::Known(v) => {
return #terustform::Err(#terustform::Diagnostics::with_path(
#terustform::Diagnostics::error_string(format!("Expected object, found {} value", v.diagnostic_type_str())),
#terustform::Clone::clone(&path),
#tf::BaseValue::Known(v) => {
return #tf::Err(#tf::Diagnostics::with_path(
#tf::Diagnostics::error_string(format!("Expected object, found {} value", v.diagnostic_type_str())),
#tf::Clone::clone(&path),
));
},
}
}
fn to_value(self) -> #tf::Value {
#tf::new_object(
[
#(#to_value_fields)*
]
)
}
}
})
}