submodule for macros

src/lib.rs

@@ -1,6 +1,5 @@
 mod _keyword_impls;
-mod parser_func;
-mod builder_type_t;
+mod macros;
 
 pub trait Predicate<C> {
     fn check(&mut self, chr: C) -> bool;

src/macros/mod.rs

@@ -0,0 +1,2 @@
+mod builder_type_t;
+mod parser_func;