Moved calc-param to ocamlbuild.

demos/calc-param/.gitignore

-calc
-lexer.ml
-parser.ml
-parser.mli
-*.cmi
-*.cmo
-*.cmx
-*.o
-*.d
-tokens.ml
-tokens.mli
+calc.native
+_build

demos/calc-param/Makefile

+.PHONY: all clean test
+
+# Find Menhir.
+ifndef MENHIR
+  MENHIR := $(shell ../find-menhir.sh)
+endif
+
+MENHIRFLAGS     := --infer
+
+OCAMLBUILD      := ocamlbuild -use-ocamlfind -use-menhir -menhir "$(MENHIR) $(MENHIRFLAGS)"
+
+MAIN            := calc
+
+all:
+	$(OCAMLBUILD) $(MAIN).native
+
+clean:
+	rm -f *~ .*~
+	$(OCAMLBUILD) -clean
+
+test: all
+	@echo "The following command should print 42.0:"
+	echo "(1 + 2 * 10) * 2" | ./$(MAIN).native
+

demos/calc-param/_tags

+<tokens.mlypack>: only_tokens
+<parser.mlypack>: external_tokens(Tokens)

demos/calc-param/myocamlbuild.ml

+open Ocamlbuild_plugin
+open Command
+
+let menhir_flags() =
+  (* Define two ocamlbuild flags [only_tokens] and [external_tokens(Foo)]
+     which correspond to menhir's [--only-tokens] and [--external-tokens Foo].
+     When they are used, these flags should be passed both to [menhir] and to
+     [menhir --raw-depend]. *)
+  List.iter (fun mode ->
+    
+    flag [ mode; "only_tokens" ] (S[A "--only-tokens"]);
+
+    pflag [ mode ] "external_tokens" (fun name ->
+      S[A "--external-tokens"; A name]
+    )
+  
+  ) [ "menhir"; "menhir_ocamldep" ]
+
+let () =
+  dispatch (fun event ->
+    match event with
+    | After_rules ->
+        menhir_flags()
+    | _ -> ()
+  )

demos/calc-param/parser.mlypack

+Tokens Parser

demos/calc-param/tokens.mlypack

+Tokens