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implement accessors for types with defaults

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Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
This commit is contained in:
Wolfgang Bumiller 2019-07-19 14:09:15 +02:00
parent 7cbc6d0962
commit 061cc5b525
2 changed files with 44 additions and 1 deletions
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16
proxmox-api-macro/src/api_def.rs
View File

@ -135,6 +135,22 @@ impl ParameterDefinition {
}
}
pub fn from_expression(expr: Expression) -> Result<Self, Error> {
let span = expr.span();
match expr {
Expression::Expr(syn::Expr::Lit(lit)) => match lit.lit {
syn::Lit::Str(description) => Ok(ParameterDefinition::builder()
.description(Some(description))
.build()
.map_err(|e| c_format_err!(span, "{}", e))?
),
_ => c_bail!(span, "expected description or field definition"),
}
Expression::Object(obj) => ParameterDefinition::from_object(obj),
_ => c_bail!(span, "expected description or field definition"),
}
}
pub fn add_verifiers(
&self,
name_str: &str,

29
proxmox-api-macro/src/api_macro.rs
View File

@ -504,6 +504,7 @@ fn handle_struct_named(
let mut field_ident_list = TokenStream::new(); // ` member1, member2, `
let mut field_name_matches = TokenStream::new(); // ` "member0" => 0, "member1" => 1, `
let mut field_value_matches = TokenStream::new();
let mut auto_methods = TokenStream::new();
let mut mem_id: isize = 0;
for field in item.named.iter() {
@ -514,11 +515,12 @@ fn handle_struct_named(
.ok_or_else(|| c_format_err!(field => "missing field name"))?;
let field_s = field_ident.to_string();
let _def = field_def
let def = field_def
.remove(&field_s)
.ok_or_else(|| {
c_format_err!(field => "missing api description entry for field {}", field_s)
})?;
let def = ParameterDefinition::from_expression(def)?;
let field_span = field_ident.span();
let field_str = syn::LitStr::new(&field_s, field_span);
@ -553,6 +555,27 @@ fn handle_struct_named(
#field_ident = Some(_api_macro_map_.next_value()?);
}
});
if let Some(default) = def.default {
let field_ty = &field.ty;
let set_field_ident = Ident::new(&format!("set_{}", field_s), field_ident.span());
auto_methods.extend(quote_spanned! { default.span() =>
pub fn #field_ident(
&self,
) -> &<#field_ty as ::proxmox::api::meta::OrDefault>::Output {
const DEF: <#field_ty as ::proxmox::api::meta::OrDefault>::Output = #default;
::proxmox::api::meta::OrDefault::or_default(&self.#field_ident, &DEF)
}
pub fn #set_field_ident(
&mut self,
value: <#field_ty as ::proxmox::api::meta::OrDefault>::Output,
) {
::proxmox::api::meta::OrDefault::set(&mut self.#field_ident, value)
}
});
}
}
let description = common.description;
@ -668,6 +691,10 @@ fn handle_struct_named(
Ok(())
}
}
impl #type_ident {
#auto_methods
}
})
}