Add debug printer

lib/js/src/compiler.js

@@ -1,11 +1,10 @@
 // Generated by BUCKLESCRIPT VERSION 1.9.3, PLEASE EDIT WITH CARE
 'use strict';
 
-var List         = require("bs-platform/lib/js/list.js");
-var Block        = require("bs-platform/lib/js/block.js");
-var $$String     = require("bs-platform/lib/js/string.js");
-var Caml_string  = require("bs-platform/lib/js/caml_string.js");
-var Js_primitive = require("bs-platform/lib/js/js_primitive.js");
+var List        = require("bs-platform/lib/js/list.js");
+var Block       = require("bs-platform/lib/js/block.js");
+var $$String    = require("bs-platform/lib/js/string.js");
+var Caml_string = require("bs-platform/lib/js/caml_string.js");
 
 function explode(s) {
   var _i = s.length - 1 | 0;
@@ -269,14 +268,38 @@ function tokenizer(input) {
   };
 }
 
-console.log(Js_primitive.undefined_to_opt(JSON.stringify(tokenizer("(add 2 (subtract 4 2))"))));
+function printToken(token) {
+  if (typeof token === "number") {
+    if (token) {
+      return "CloseParen";
+    } else {
+      return "OpenParen";
+    }
+  } else {
+    switch (token.tag | 0) {
+      case 0 : 
+          return "Number " + token[0];
+      case 1 : 
+          return "String " + token[0];
+      case 2 : 
+          return "Name " + token[0];
+      
+    }
+  }
+}
+
+List.iter((function (k) {
+        console.log(printToken(k));
+        return /* () */0;
+      }), tokenizer("(add 2 (subtract 4 2))"));
 
 var machine = /* record */[
   /* current : None */0,
   /* parsed : [] */0
 ];
 
-exports.machine   = machine;
-exports.explode   = explode;
-exports.tokenizer = tokenizer;
+exports.machine    = machine;
+exports.explode    = explode;
+exports.tokenizer  = tokenizer;
+exports.printToken = printToken;
 /*  Not a pure module */

src/compiler.re

@@ -56,4 +56,13 @@ let tokenizer input => {
   tok (explode input) machine.current machine.parsed
 };
 
-Js.log @@ Js.Json.stringifyAny (tokenizer "(add 2 (subtract 4 2))");
+let printToken token =>
+  switch token {
+  | OpenParen => "OpenParen"
+  | CloseParen => "CloseParen"
+  | Number s => "Number " ^ s
+  | String s => "String " ^ s
+  | Name s => "Name " ^ s
+  };
+
+List.iter (fun k => Js.log (printToken k)) (tokenizer "(add 2 (subtract 4 2))");