moved namespaces to their own module

src/namespace/type.rs

@@ -0,0 +1,37 @@
+use std::collections::HashSet;
+
+use std::cell::RefCell;
+
+use super::Trait;
+
+use super::GlobalNamespace;
+
+#[derive(Clone, Copy)]
+pub struct Type<'a> {
+    pub(super) id: usize,
+    pub(super) namespace: &'a GlobalNamespace,
+}
+
+impl<'a> Type<'a> {
+    pub fn add_trait(&self, to_add: &'a Trait) {
+        let internal_self = &self.namespace.types.borrow()[self.id];
+
+        internal_self.traits.borrow_mut().insert(to_add.id);
+        self.namespace.traits.borrow_mut()[to_add.id]
+            .types
+            .borrow_mut()
+            .insert(self.id);
+    }
+
+    pub fn has_trait(&self, to_check: &'a Trait) -> bool {
+        self.namespace.types.borrow()[self.id]
+            .traits
+            .borrow()
+            .contains(&to_check.id)
+    }
+}
+
+pub(super) struct InternalType {
+    pub(super) traits: RefCell<HashSet<usize>>,
+    pub(super) name: String,
+}