From 0e2db3d20ccae2090f4a01d172e451c596da0c30 Mon Sep 17 00:00:00 2001
From: Kamen Mladenov <kamen@syndamia.com>
Date: Mon, 3 Feb 2025 14:52:56 +0200
Subject: feat(zkvms_host_io): Add public_inputs and private_inputs attributes
 to RunWith

---
 zkvms_host_io/input_macros/src/lib.rs | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

(limited to 'zkvms_host_io/input_macros')

diff --git a/zkvms_host_io/input_macros/src/lib.rs b/zkvms_host_io/input_macros/src/lib.rs
index 5e36466..ea59460 100644
--- a/zkvms_host_io/input_macros/src/lib.rs
+++ b/zkvms_host_io/input_macros/src/lib.rs
@@ -2,7 +2,7 @@ use proc_macro::TokenStream;
 
 #[path = "../../../guests_macro/src/parse_fn.rs"]
 mod parse_fn;
-use crate::parse_fn::{ args_split, args_divide, args_divide_public, group_streams };
+use crate::parse_fn::{ args_split, args_split_public, args_divide, args_divide_public, group_streams };
 
 fn get_types() -> (TokenStream, TokenStream) {
     let types: Vec<&str> = include_str!("../../../guests/type.txt")
@@ -11,9 +11,12 @@ fn get_types() -> (TokenStream, TokenStream) {
     (types[0].parse::<TokenStream>().unwrap(), types[1].parse::<TokenStream>().unwrap())
 }
 
+static DERIVES: &str = "#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]";
+
 #[proc_macro]
 pub fn generate_output_type_input_struct(_: TokenStream) -> TokenStream {
     let (args, ret) = get_types();
+    let (patterns, types) = args_divide(&args);
 
     let public_inputs = toml::from_str::<toml::Table>(
             include_str!(concat!(env!("INPUTS_DIR"), "/default_public_input.toml"))
@@ -28,12 +31,25 @@ pub fn generate_output_type_input_struct(_: TokenStream) -> TokenStream {
 
     let all_args = args_split(&args);
 
-    let mut struct_def = "#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)] pub struct Input {".to_string();
+    let public_args = args_split_public(&args, &public_inputs.keys().collect());
+    let public_attrs = public_args
+        .iter()
+        .map(|x| format!("pub {x},"))
+        .collect::<String>();
+    let public_input_type = format!("{} pub struct PublicInput {{ {} }}", DERIVES, public_attrs).to_string();
+
+    let private_attrs = all_args
+        .iter()
+        .filter(|t| !public_args.iter().any(|pt| *t.to_string() == pt.to_string()))
+        .map(|x| format!("pub {x},"))
+        .collect::<String>();
+    let private_input_type = format!("{} pub struct PrivateInput {{ {} }}", DERIVES, private_attrs).to_string();
+
+    let mut struct_def = format!("{} pub struct Input {{", DERIVES);
     for arg in all_args {
         struct_def += &format!("pub {arg},");
     }
 
-    let (patterns, types) = args_divide(&args);
     let types = group_streams(&types);
     struct_def += &format!("}}
         impl From<Input> for {types} {{
@@ -46,7 +62,7 @@ pub fn generate_output_type_input_struct(_: TokenStream) -> TokenStream {
     }
     struct_def += ") } }";
 
-    (output_type + &struct_def).parse::<TokenStream>().unwrap()
+    (output_type + &public_input_type + &private_input_type + &struct_def).parse::<TokenStream>().unwrap()
 }
 
 #[proc_macro]
-- 
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