diff --git a/csbindgen-tests/Cargo.toml b/csbindgen-tests/Cargo.toml
index 68fc965..202e2d2 100644
--- a/csbindgen-tests/Cargo.toml
+++ b/csbindgen-tests/Cargo.toml
@@ -14,7 +14,7 @@ path = "src/lib.rs"
 
 [dependencies]
 csbindgen = { path = "../csbindgen" }
-physx-sys = "0.11.0"
+# physx-sys = "0.11.0"
 
 [build-dependencies]
 cc = "1.0.79"
diff --git a/csbindgen/src/builder.rs b/csbindgen/src/builder.rs
index c7de846..6d44107 100644
--- a/csbindgen/src/builder.rs
+++ b/csbindgen/src/builder.rs
@@ -185,8 +185,8 @@ impl Builder {
         Ok(())
     }
 
-    fn has_input_file(&self) -> bool {
-        !self.options.input_bindgen_file.to_string_lossy().is_empty()
+    fn has_input_files(&self) -> bool {
+        !self.options.input_bindgen_files.is_empty()
     }
     fn has_input_externals(&self) -> bool {
         !self.options.input_extern_files.is_empty()
@@ -197,7 +197,7 @@ impl Builder {
         rust_output_path: P,
         csharp_output_path: P,
     ) -> Result<(), Box<dyn Error>> {
-        if !self.options.input_bindgen_files.is_empty() {
+        if self.has_input_files() {
             let (rust, csharp) = generate(GenerateKind::InputBindgen, &self.options)?;
 
             if let Some(rust) = rust {
diff --git a/csbindgen/src/parser.rs b/csbindgen/src/parser.rs
index 19758a8..689fb4a 100644
--- a/csbindgen/src/parser.rs
+++ b/csbindgen/src/parser.rs
@@ -1,6 +1,6 @@
 use crate::{alias_map::AliasMap, builder::BindgenOptions, field_map::FieldMap, type_meta::*};
 use std::collections::HashSet;
-use syn::{ForeignItem, Item, Pat, ReturnType};
+use syn::{ForeignItem, Item, Pat, ReturnType, __private::ToTokens};
 
 enum FnItem {
     ForeignItem(syn::ForeignItemFn),
@@ -209,6 +209,24 @@ pub fn collect_enum(ast: &syn::File, result: &mut Vec<RustEnum>) {
                 repr,
             });
         }
+        else if let Item::Macro(t) = item  {
+            let last_segment = t.mac.path.segments.last().unwrap();
+            if last_segment.ident == "bitflags" {
+                // t.mac.tokens
+                //let inner_ast = syn::parse(t.mac.tokens);
+                //let ttt = t.mac.to_token_stream();
+                
+                let input = t.mac.to_tokens(tokens);
+                //let foo = syn::parse(tokens);
+                //let tako = syn::parse2(tokens);
+
+                //t.mac.tokens.to_string()
+
+                let ast: syn::DeriveInput = syn::parse_file(content)
+
+                //let file_ast = syn::parse_file(t.mac.to_tokens(tokens)
+            }
+        }
     }
 }