Move cfg gates to lib.rs
diff --git a/src/lib.rs b/src/lib.rs
index 6814c98..85c3593 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -11,9 +11,11 @@
 #[macro_use]
 mod nom;
 
+#[cfg(feature = "parsing")]
 #[macro_use]
 mod helper;
 
+#[cfg(feature = "parsing")]
 mod escape;
 
 mod attr;
@@ -128,6 +130,7 @@
     MacroInput,
 };
 
+#[cfg(feature = "parsing")]
 mod space;
 
 mod ty;