distinct type aliasing

examples/programs/distinct_types/ids/ids.bro

@@ -0,0 +1,5 @@
+UserID :: distinct u32
+
+make :: func(value u32) UserID {
+	return UserID(value)
+}

examples/programs/distinct_types/main.bro

@@ -0,0 +1,38 @@
+ids :: import "./ids"
+
+Point :: struct {
+	x i32
+	y i32
+}
+
+LocalID :: distinct u32
+PointID :: distinct Point
+Bytes :: distinct [2]u8
+WrappedID :: distinct LocalID
+
+static_id LocalID :: LocalID(42)
+
+take :: func(value LocalID) LocalID {
+	return value
+}
+
+main :: func() i32 {
+	id LocalID :: LocalID(7)
+	copy LocalID = take(id)
+	maybe ?LocalID = copy
+	pointer @LocalID = &copy
+	point PointID :: PointID(Point { x = 1, y = 2 })
+	bytes Bytes :: Bytes([3, 4])
+	wrapped WrappedID :: WrappedID(id)
+	remote ids.UserID :: ids.UserID(8)
+	remote_copy ids.UserID :: ids.make(9)
+	_ = static_id
+	_ = maybe
+	_ = pointer
+	_ = point
+	_ = bytes
+	_ = wrapped
+	_ = remote
+	_ = remote_copy
+	return 0
+}