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rust: remove offset_of replacement

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Reviewed-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2025-05-02 10:35:49 +02:00
parent 5df3fe062f
commit b134a09ffa
15 changed files with 16 additions and 239 deletions
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29
rust/qemu-api-macros/src/lib.rs
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@ -6,7 +6,7 @@ use proc_macro::TokenStream;
use quote::quote;
use syn::{
parse_macro_input, parse_quote, punctuated::Punctuated, spanned::Spanned, token::Comma, Data,
DeriveInput, Field, Fields, FieldsUnnamed, Ident, Meta, Path, Token, Type, Variant, Visibility,
DeriveInput, Field, Fields, FieldsUnnamed, Ident, Meta, Path, Token, Variant,
};
mod utils;
@ -151,33 +151,6 @@ pub fn derive_opaque(input: TokenStream) -> TokenStream {
TokenStream::from(expanded)
}
#[rustfmt::skip::macros(quote)]
fn derive_offsets_or_error(input: DeriveInput) -> Result<proc_macro2::TokenStream, MacroError> {
is_c_repr(&input, "#[derive(offsets)]")?;
let name = &input.ident;
let fields = get_fields(&input, "#[derive(offsets)]")?;
let field_names: Vec<&Ident> = fields.iter().map(|f| f.ident.as_ref().unwrap()).collect();
let field_types: Vec<&Type> = fields.iter().map(|f| &f.ty).collect();
let field_vis: Vec<&Visibility> = fields.iter().map(|f| &f.vis).collect();
Ok(quote! {
::qemu_api::with_offsets! {
struct #name {
#(#field_vis #field_names: #field_types,)*
}
}
})
}
#[proc_macro_derive(offsets)]
pub fn derive_offsets(input: TokenStream) -> TokenStream {
let input = parse_macro_input!(input as DeriveInput);
let expanded = derive_offsets_or_error(input).unwrap_or_else(Into::into);
TokenStream::from(expanded)
}
#[allow(non_snake_case)]
fn get_repr_uN(input: &DeriveInput, msg: &str) -> Result<Path, MacroError> {
let repr = input.attrs.iter().find(|attr| attr.path().is_ident("repr"));