"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ var desc = Object.getOwnPropertyDescriptor(m, k);
+ if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+ desc = { enumerable: true, get: function() { return m[k]; } };
+ }
+ Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+ Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+ o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+ if (mod && mod.__esModule) return mod;
+ var result = {};
+ if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+ __setModuleDefault(result, mod);
+ return result;
+};
Object.defineProperty(exports, "__esModule", { value: true });
-exports.thenDo = exports.charToCodepoint = exports.match1Char = void 0;
+exports.match1token = void 0;
var fs = require('fs');
+const tk = __importStar(require("./tokenize.js"));
+let b = tk.tokenize("2+2");
/**
* @description
* it returns a function which test if the first char of the `remained` part of
* the argument of the function is `c`, if it's true, update the `MatchedPair` wrapped
* in `Some`. Otherwise, it returns `None`.
- * * @param c : the char to be test.
+ * * @param t : the char to be test.
* @returns the updated `MatchedPair` wrapped in `Some(x)` or `None`.
*/
-function match1Char(c) {
+function match1token(t) {
return (m) => {
- const charToBeMatched = m.remained[0];
- if (charToBeMatched === c) {
- return { _tag: "Some", value: {
- matched: m.matched + charToBeMatched,
- remained: m.remained.substring(1)
- } };
+ if (m.remained.length == 0) {
+ return { _tag: "None" };
+ }
+ const tokenToBeMatched = m.remained[0];
+ if (tokenToBeMatched === t) {
+ m.matched.push(tokenToBeMatched);
+ return {
+ _tag: "Some", value: {
+ matched: m.matched,
+ remained: m.remained.slice(1)
+ }
+ };
}
else {
return { _tag: "None" };
}
};
}
-exports.match1Char = match1Char;
+exports.match1token = match1token;
;
-/**
- * convert the one-char string to codepoint.
- * @param s : the string to code point.
- * @returns if `s.length > 1` return error; otherwise, return the codepoint of `s`.
- */
-function charToCodepoint(s) {
- if (s.length > 1) {
- throw new Error("Error: the length of input string for " + s + "is " + s.length + `,
- however, it should be 1.`);
- }
- else {
- return s.charCodeAt(0);
- }
-}
-exports.charToCodepoint = charToCodepoint;
-/**
- * @description thendo(input, f, ...) like
- * a ==> f
- */
-function thenDo(input, f) {
- if (input._tag == "None") {
- return input;
- }
- else {
- let inner = input.value;
- return f(inner);
- }
-}
-exports.thenDo = thenDo;
+let c = tk.toSome(b);
+console.log(thenDo(c, match1token(tk.tokenize("+")[0])));