+/**
+ * type int
+ */
+let tInt = m1TType(tk.TokenType.INT);
+let tAdd = m1TType(tk.TokenType.I_ADD);
+let tMul = m1TType(tk.TokenType.I_MUL);
+node_process_1.argv.forEach((val, index) => {
+ console.log(`${index}=${val}`);
+});
+/**
+ * like `m ==> f` in ocaml
+ * @param m matchee wrapped
+ * @param f matching function
+ * @returns wrapped result
+ */
+function thenDo(m, f) {
+ if (m._tag == "None") {
+ return m;
+ }
+ else {
+ var a = f(m.value);
+ if (a._tag == "Some") {
+ a.value.ast = concat(m.value.ast, a.value.ast);
+ }
+ return a;
+ }
+}
+/**
+ * like `f1 | f2` in regex
+ * @param f1 the first tried function
+ * @param f2 the second tried function
+ * @returns wrapped result
+ */
+function orDo(f1, f2) {
+ return (x) => {
+ let res1 = f1(x);
+ if (res1._tag == "Some") {
+ return res1;
+ }
+ else {
+ let res2 = f2(x);
+ return res2;
+ }
+ };
+}
+let midfix = (f, signal) => (x) => {
+ var a = f(x);
+ if (a._tag == "Some") {
+ let ast_head = slice(a.value.ast, 0, a.value.ast.length - 3);
+ let ast_tail = slice(a.value.ast, a.value.ast.length - 3);
+ let new_ast = [ast_tail];
+ a.value.ast = new_ast;
+ console.log("+" + signal + "+" + repr(a));
+ }
+ return a;
+};
+/**
+ *
+ * fac1 = int MUL int
+ */
+//let fac1 = midfix((x : TokenMatcheePair)=>
+// thenDo(thenDo(thenDo(tk.toSome(x), tInt), tMul), tInt));
+let fac1 = (x) => {
+ let a = midfix((x) => thenDo(thenDo(thenDo(tk.toSome(x), tInt), tMul), tInt), "fac1")(x);
+ return a;
+};
+/**
+ *
+ * fac2 = int MUL int
+ */
+let fac2 = tInt;
+/**
+ * fac = fac1 | fac2
+ */
+let fac = orDo(fac1, fac2);
+/**
+ *
+ * expr1 = fac ADD fac
+ */
+let expr1 = midfix((x) => thenDo(thenDo(thenDo(tk.toSome(x), fac), tAdd), fac), "expr1");
+/**
+ * expr2 = fac
+ */
+let expr2 = fac;
+/**
+ * expr = expr1 | expr2
+ */
+let expr = orDo(expr1, expr2);
+let tokens = tk.tokenize("2+3"); //tk.tokenize(argv[2]);
+let tokensFiltered = tokens.filter((x) => {
+ return (x.type != tk.TokenType.NL
+ && x.type != tk.TokenType.SP);
+});
+let wrappedTokens = tk.toSome({
+ matched: [],
+ remained: tokensFiltered,
+ ast: []
+});
+let beta = expr({
+ matched: [],
+ remained: tokensFiltered,
+ ast: []
+});
+console.log(repr(wrappedTokens));
+console.log(repr(beta));