Refactor code base and split into more module files.

src/module.rs

@@ -0,0 +1,35 @@
+//! Module defining external-loaded modules for Rhai.
+
+use crate::any::Dynamic;
+
+use crate::stdlib::{
+    collections::HashMap,
+    ops::{Deref, DerefMut},
+    string::String,
+};
+
+/// An imported module.
+///
+/// Not available under the `no_module` feature.
+#[derive(Debug, Clone)]
+pub struct Module(HashMap<String, Dynamic>);
+
+impl Module {
+    /// Create a new module.
+    pub fn new() -> Self {
+        Self(HashMap::new())
+    }
+}
+
+impl Deref for Module {
+    type Target = HashMap<String, Dynamic>;
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+impl DerefMut for Module {
+    fn deref_mut(&mut self) -> &mut Self::Target {
+        &mut self.0
+    }
+}