feat(zkvms): Add zkwasm guest and it's macro

2 files changed, 40 insertions, 0 deletions

diff --git a/zkvms/zkwasm/wrapper_macro/Cargo.toml b/zkvms/zkwasm/wrapper_macro/Cargo.toml
new file mode 100644
index 0000000..14348e5
--- /dev/null
+++ b/zkvms/zkwasm/wrapper_macro/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "wrapper_macro"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+proc-macro = true
diff --git a/zkvms/zkwasm/wrapper_macro/src/lib.rs b/zkvms/zkwasm/wrapper_macro/src/lib.rs
new file mode 100644
index 0000000..edb2fcd
--- /dev/null
+++ b/zkvms/zkwasm/wrapper_macro/src/lib.rs
@@ -0,0 +1,33 @@
+use proc_macro::TokenStream;
+
+#[path = "../../../../guests_macro/src/parse_fn.rs"]
+mod parse_fn;
+use crate::parse_fn::{ split_fn, args_split, args_divide, group_streams };
+
+#[proc_macro]
+pub fn make_wrapper(item: TokenStream) -> TokenStream {
+    let (name, args, ret) = split_fn(&item);
+    let (patterns, types) = args_divide(&args);
+
+    let mut out = TokenStream::new();
+
+    for i in 0..patterns.len() {
+        let type_note: String = format!("{}", types[i])
+            .chars()
+            .map(|c| match c {
+                '<' => ',',
+                '>' => ' ',
+                 _  => c,
+            })
+            .collect();
+        out.extend(format!("let {} : {} = read!({});", patterns[i], types[i], type_note).parse::<TokenStream>());
+    }
+
+    let ts_patterns = group_streams(&patterns);
+
+    out.extend(format!("let result = zkp::{}{}; assert(result); write(result as u64);", name, ts_patterns).parse::<TokenStream>());
+
+    let mut block = TokenStream::new();
+    block.extend(format!("{{ {} }}", out).parse::<TokenStream>());
+    block
+}