209 MacoCaml: Staging Composable and Compilable Macros NINGNING XIE, University of Toronto, Canada LEO WHITE, Jane Street Capital, UK OLIVIER NICOLE, Tarides, France JEREMY YALLOP, University of Cambridge, UK We introduce MacoCaml, a new design and implementation of compile-time code generation for the OCaml language. MacoCaml features a novel combination of macros with phase separation and quotat