Move files in preparation for monorepo migration

libs/theseus_macros/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "theseus_macros"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+proc-macro = true
+
+[dependencies]
+syn = { version = "2.0.58", features = ["full"] }
+quote = "1.0"

libs/theseus_macros/src/lib.rs

@@ -0,0 +1,34 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use quote::quote;
+use syn::{parse_macro_input, ItemFn};
+
+#[proc_macro_attribute]
+pub fn debug_pin(_attr: TokenStream, item: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(item as ItemFn);
+
+    let attrs = &input.attrs;
+    let vis = &input.vis;
+    let sig = &input.sig;
+    let body = &input.block;
+
+    #[cfg(debug_assertions)]
+    let result = quote! {
+        #(#attrs)*
+        #vis #sig {
+            Box::pin(async move {
+                #body
+            }).await
+        }
+    };
+    #[cfg(not(debug_assertions))]
+    let result = quote! {
+        #(#attrs)*
+        #vis #sig {
+            #body
+        }
+    };
+
+    TokenStream::from(result)
+}