lay groundwork for models

1 files changed, 26 insertions, 0 deletions

diff --git a/tosin-macros/src/lib.rs b/tosin-macros/src/lib.rs
new file mode 100644
index 0000000..c0651fa
--- /dev/null
+++ b/tosin-macros/src/lib.rs
@@ -0,0 +1,26 @@
+extern crate proc_macro;
+
+use proc_macro::TokenStream;
+use quote::quote;
+
+#[proc_macro_derive(Model, attributes(model))]
+pub fn model_derive(input: TokenStream) -> TokenStream {
+    // Construct a representation of Rust code as a syntax tree
+    // that we can manipulate
+    let ast = syn::parse(input).unwrap();
+
+    // Build the trait implementation
+    impl_model(&ast)
+}
+
+fn impl_model(ast: &syn::DeriveInput) -> TokenStream {
+    let name = &ast.ident;
+    let gen = quote! {
+        impl #name {
+            fn hello_macro() {
+                println!("Hello, Macro! My name is {}!", stringify!(#name));
+            }
+        }
+    };
+    gen.into()
+}