1 files changed, 17 insertions, 0 deletions
diff --git a/helix-core/src/macros.rs b/helix-core/src/macros.rs
new file mode 100644
index 00000000..1321ea5f
--- /dev/null
+++ b/helix-core/src/macros.rs
@@ -0,0 +1,17 @@
+#[macro_export]
+macro_rules! hashmap {
+    (@single $($x:tt)*) => (());
+    (@count $($rest:expr),*) => (<[()]>::len(&[$(hashmap!(@single $rest)),*]));
+
+    ($($key:expr => $value:expr,)+) => { hashmap!($($key => $value),+) };
+    ($($key:expr => $value:expr),*) => {
+        {
+            let _cap = hashmap!(@count $($key),*);
+            let mut _map = ::std::collections::HashMap::with_capacity(_cap);
+            $(
+                let _ = _map.insert($key, $value);
+            )*
+            _map
+        }
+    };
+}