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use proc_macro::TokenStream;
#[path = "../../../../guests_macro/src/parse_fn.rs"]
mod parse_fn;
use crate::parse_fn::{args_divide_grouped, args_divide_public, args_split, split_fn};
/// Create a body, which reads all inputs, stores them in variables, then
/// commits the ones, defined as public in `default_public_input.toml` to the
/// journal and finally executes the guest entrypoint function with those
/// arguments, committing its output.
///
/// # Usage
///
/// Inside RISC0's guest (excluding the `entrypoint_expr` call):
///
/// ```rust
/// make_wrapper!{fn main(...) -> ...}
/// ```
///
/// # Example output
///
/// ```rust
/// {
/// let ... : ... = read();
/// let ... : ... = read();
/// ...
/// commit(&...);
/// commit(&...);
/// ...
/// commit(&zkp::main(..., ..., ...));
/// }
/// ```
#[proc_macro]
pub fn make_wrapper(item: TokenStream) -> TokenStream {
let (name, args, ret) = split_fn(&item);
let args_split = args_split(&args);
let mut out = TokenStream::new();
for arg in args_split {
out.extend(format!("let {} = read();", arg).parse::<TokenStream>());
}
let public_inputs = toml::from_str::<toml::Table>(include_str!(concat!(
env!("INPUTS_DIR"),
"/default_public_input.toml"
)))
.unwrap();
let public_patterns = args_divide_public(&args, &public_inputs.keys().collect())
.0
.0;
for pattern in public_patterns.iter() {
out.extend(format!("commit(&{});", pattern).parse::<TokenStream>());
}
let (ts_patterns, _) = args_divide_grouped(&args);
out.extend(format!("commit(&zkp::{}{});", name, ts_patterns).parse::<TokenStream>());
let mut block = TokenStream::new();
block.extend(format!("{{ {} }}", out).parse::<TokenStream>());
block
}
|
