OCaml: add step 0

1 files changed, 23 insertions, 0 deletions

diff --git a/ocaml/step0_repl.ml b/ocaml/step0_repl.ml
new file mode 100644
index 0000000..e3478f7
--- /dev/null
+++ b/ocaml/step0_repl.ml
@@ -0,0 +1,23 @@
+(*
+  To try things at the ocaml repl:
+  rlwrap ocaml
+
+  To see type signatures of all functions:
+  ocamlc -i step0_repl.ml
+
+  To run the program:
+  ocaml step0_repl.ml
+*)
+
+let read str = str
+let eval ast any = ast
+let print exp = exp
+let rep str = print (eval (read str) "")
+
+let rec main =
+  try
+    while true do
+      print_string "user> ";
+      print_endline (rep (read_line ()));
+    done
+  with End_of_file -> ()