diff --git a/src/ast.rs b/src/ast.rs
index 4dbdc26..d366464 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -4,32 +4,18 @@ mod expr;
 mod field;
 mod func_def;
 mod lit;
+mod program;
 mod table_constr;
 mod table_destr;
 mod var;
 
-use crate::span::{HasSpan, Span};
-
 pub use self::basic::*;
 pub use self::call::*;
 pub use self::expr::*;
 pub use self::field::*;
 pub use self::func_def::*;
 pub use self::lit::*;
+pub use self::program::*;
 pub use self::table_constr::*;
 pub use self::table_destr::*;
 pub use self::var::*;
-
-#[derive(Debug, Clone)]
-pub struct Program {
-    pub elems: Vec<(Space, TableLitElem, Space)>,
-    /// `Some` if there is a trailing comma, `None` otherwise.
-    pub trailing_comma: Option<Space>,
-    pub span: Span,
-}
-
-impl HasSpan for Program {
-    fn span(&self) -> Span {
-        self.span
-    }
-}
diff --git a/src/ast/program.rs b/src/ast/program.rs
new file mode 100644
index 0000000..8573ec1
--- /dev/null
+++ b/src/ast/program.rs
@@ -0,0 +1,17 @@
+use crate::span::{HasSpan, Span};
+
+use super::{Space, TableLitElem};
+
+#[derive(Debug, Clone)]
+pub struct Program {
+    pub elems: Vec<(Space, TableLitElem, Space)>,
+    /// `Some` if there is a trailing comma, `None` otherwise.
+    pub trailing_comma: Option<Space>,
+    pub span: Span,
+}
+
+impl HasSpan for Program {
+    fn span(&self) -> Span {
+        self.span
+    }
+}