1 files changed, 18 insertions, 0 deletions
diff --git a/src/lambda.rs b/src/lambda.rs
new file mode 100644
index 0000000..cf7b1ec
--- /dev/null
+++ b/src/lambda.rs
@@ -0,0 +1,18 @@
+// I'm only a little sorry for this.
+
+// Inline definition of anonymous functions. Examples:
+// l!(42;)
+// l!(i32 := 42)
+// l!(i: i32 := i + 42)
+// l!(i: i32, j: i32 -> i32 := i + j)
+#[macro_export]
+macro_rules! l {
+    ($body: expr) => ({ fn f() { $body } f });
+    ($res: ty := $body: expr) => ({ fn f() -> $res { $body } f });
+    ($($n: ident: $t: ty),+ := $body: expr) => ({
+        fn f($($n: $t),+) { $body } f
+    });
+    ($($n: ident: $t: ty),+ -> $res: ty := $body: expr) => ({
+        fn f($($n: $t),+) -> $res { $body } f
+    })
+}