X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Findex.js;h=fb887701725ab7261a7bda6b47b78fa15babc3a5;hb=cda463d89022d09a5273b59bcd3e776f1127697a;hp=712af45015c8dbd4747f9df53f1506724ca8effd;hpb=13c9e7026b3a5ba274ef046db3311b76aaaac244;p=clo diff --git a/src/index.js b/src/index.js index 712af45..fb88770 100644 --- a/src/index.js +++ b/src/index.js @@ -1,88 +1,61 @@ "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.matchRange = 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) - } }; - } - else { + if (m.remained.length == 0) { return { _tag: "None" }; } - }; -} -exports.match1Char = match1Char; -; -/** - * @description - * it returns a function which test if the first char of the `remained` part of - * the argument of the function is between `l` and `u`, if it's true, update the `MatchedPair` wrapped - * in `Some`. Otherwise, it returns `None`. - * * @param l : lower bound char, 1-char string - * * @param u : upper bound char, 1-char string - * @returns the updated `MatchedPair` wrapped in `Some(x)` or `None`. - */ -function matchRange(l, u) { - let lCodepoint = charToCodepoint(l); - let uCodepoint = charToCodepoint(u); - if (l > u) { - throw new Error("Error: the codepoint of `" + l + "` is not smaller than `" + u + "`)"); - } - return (m) => { - const charToBeMatched = m.remained[0]; - const codePointToBeMatched = charToCodepoint(charToBeMatched); - if (codePointToBeMatched >= lCodepoint && codePointToBeMatched <= uCodepoint) { - return { _tag: "Some", value: { - matched: m.matched + charToBeMatched, - remained: m.remained.substring(1) - } }; + 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.matchRange = matchRange; +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])));