ephemeral_rollups_sdk_attribute_commit/
lib.rs1extern crate proc_macro;
2use proc_macro::TokenStream;
3use proc_macro2::TokenStream as TokenStream2;
4use quote::quote;
5use syn::parse::Parser;
6use syn::{parse_macro_input, Field, Fields, ItemStruct};
7
8fn generated_unchecked_account_type() -> TokenStream2 {
9 if cfg!(feature = "backward-compat") {
10 quote! { AccountInfo<'info> }
11 } else {
12 quote! { UncheckedAccount<'info> }
13 }
14}
15
16#[proc_macro_attribute]
17pub fn commit(_attr: TokenStream, item: TokenStream) -> TokenStream {
18 let input = parse_macro_input!(item as ItemStruct);
19
20 let name = &input.ident;
21 let attrs = &input.attrs; let unchecked_account = generated_unchecked_account_type();
23 let expanded = if let Fields::Named(fields_named) = &input.fields {
24 let mut has_magic_program = false;
25 let mut has_magic_context = false;
26
27 for field in &fields_named.named {
28 if let Some(ident) = &field.ident {
29 if ident == "magic_program" {
30 has_magic_program = true;
31 } else if ident == "magic_context" {
32 has_magic_context = true;
33 }
34 }
35 }
36
37 let mut new_fields = fields_named.named.clone();
38
39 if !has_magic_program {
40 new_fields.push(
41 Field::parse_named
42 .parse2(quote! {
43 pub magic_program: Program<'info, ephemeral_rollups_sdk::anchor::MagicProgram>
44 })
45 .unwrap(),
46 );
47 }
48
49 if !has_magic_context {
50 new_fields.push(
51 Field::parse_named
52 .parse2(quote! {
53 #[account(mut, address = ephemeral_rollups_sdk::consts::MAGIC_CONTEXT_ID)]
54 pub magic_context: #unchecked_account
56 })
57 .unwrap(),
58 );
59 }
60
61 quote! {
62 #(#attrs)*
63 pub struct #name<'info> {
64 #new_fields
65 }
66 }
67 } else {
68 quote! {
69 compile_error!("Commit attribute can only be used with structs with named fields");
70 }
71 };
72
73 TokenStream::from(expanded)
74}