diff --git a/src/macros.rs b/src/macros.rs
index 7777d1438c26ff8c770480bee68c179d5490e364..e27cb8c2d16d10bef8c5165b96b8d6d091bde3fe 100644
--- a/src/macros.rs
+++ b/src/macros.rs
@@ -18,4 +18,32 @@ macro_rules! dbg_code {
     ($code:stmt) => {
         #[cfg(debug_assertions)] $code
     }
+}
+
+// Given a function name, return type and variant, will generate the all-so
+// common `union_value.as_variant()` method. The return value is the reference
+// to the embedded union type.
+macro_rules! union_cast_to_ref_method_impl {
+    ($func_name:ident, $ret_type:ty, $variant:path) => {
+        fn $func_name(&self) -> &$ret_type {
+            match self {
+                $variant(content) => return content,
+                _ => unreachable!(),
+            }
+        }
+    }
+}
+
+// Another union cast, but now returning a copy of the value
+macro_rules! union_cast_to_value_method_impl {
+    ($func_name:ident, $ret_type:ty, $variant:path) => {
+        impl Value {
+            pub(crate) fn $func_name(&self) -> $ret_type {
+                match self {
+                    $variant(v) => *v,
+                    _ => unreachable!(),
+                }
+            }
+        }
+    }
 }
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