-/**
- * 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));