"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
-exports.thenDo = exports.charToCodepoint = exports.matchRange = exports.match1Char = void 0;
+exports.tokenize = exports.zeroOrOnceDo = exports.notDo = exports.zeroOrMoreDo = exports.orDo = exports.thenDo = exports.charToCodepoint = exports.matchRange = exports.matchAny = exports.match1Char = exports.TokenType = void 0;
var fs = require('fs');
+/**
+ * wrap a x in a `Some(T)`
+ * @param x : variable to be wrapped.
+ * @returns wrapped `x`.
+ */
+function toSome(x) {
+ return { _tag: "Some", value: x };
+}
+/**
+ * The types of Token
+ * NL, // newline
+ *
+ * SP, // half-width space and tab
+ *
+ * ID, // identifier
+ *
+ * STR, // string
+ *
+ * OP, // operator or something like it
+ *
+ * FLO, // float num
+ *
+ * INT, // Integer
+ */
+var TokenType;
+(function (TokenType) {
+ TokenType[TokenType["NL"] = 0] = "NL";
+ TokenType[TokenType["SP"] = 1] = "SP";
+ TokenType[TokenType["ID"] = 2] = "ID";
+ TokenType[TokenType["STR"] = 3] = "STR";
+ TokenType[TokenType["OP"] = 4] = "OP";
+ TokenType[TokenType["FLO"] = 5] = "FLO";
+ TokenType[TokenType["INT"] = 6] = "INT";
+})(TokenType || (exports.TokenType = TokenType = {}));
/**
* @description
* it returns a function which test if the first char of the `remained` part of
*/
function match1Char(c) {
return (m) => {
+ if (m.remained.length == 0) {
+ return { _tag: "None" };
+ }
const charToBeMatched = m.remained[0];
if (charToBeMatched === c) {
return { _tag: "Some", value: {
}
exports.match1Char = match1Char;
;
+/**
+ *
+ * @param m : the `MatcheePair` to be consumed.
+ * @returns if the length of `m.remained` >= 1; consumes the matchee by 1 char and wraps it in `Some`,
+ * otherwise, returns `None`.
+ */
+function matchAny(m) {
+ if (m.remained.length >= 1) {
+ return { _tag: "Some", value: {
+ matched: m.matched + m.remained[0],
+ remained: m.remained.substring(1)
+ } };
+ }
+ else {
+ return { _tag: "None" };
+ }
+}
+exports.matchAny = matchAny;
/**
* @description
* it returns a function which test if the first char of the `remained` part of
throw new Error("Error: the codepoint of `" + l + "` is not smaller than `" + u + "`)");
}
return (m) => {
+ if (m.remained.length < 1) {
+ return { _tag: "None" };
+ }
const charToBeMatched = m.remained[0];
const codePointToBeMatched = charToCodepoint(charToBeMatched);
if (codePointToBeMatched >= lCodepoint && codePointToBeMatched <= uCodepoint) {
/**
* @description thendo(input, f, ...) like
* a ==> f
+ * @param input: the wrapped input.
+ * @param f: the function to be applied.
+ *
+ * @returns:the applied wrapped result `MatcheePair`.
*/
function thenDo(input, f) {
if (input._tag == "None") {
}
}
exports.thenDo = thenDo;
+/**
+ * @description "or", like the regex `( f1 | f2 )` .
+ * It returns a function `f` of which the argument is`x`.
+ * if `f1(x)` is None, then `f` returns `f2(x)`. Otherwise,
+ * `F` returns `f1(x)`.
+ * @param f1 : 1st function to be compared
+ * @param f2 : 2nd function to be compared
+ * @returns:the combined function
+ */
+function orDo(f1, f2) {
+ return (x) => {
+ let f1x = (f1(x));
+ {
+ if (f1x._tag == "None") {
+ return f2(x);
+ }
+ else {
+ return f1x;
+ }
+ }
+ };
+}
+exports.orDo = orDo;
+/**
+* @description repeating matching function `f`
+* zero or more times, like the asterisk `*` in regex `f*` .
+* @param f : the function to be repeated 0+ times.
+* @returns:the combined function
+*/
+function zeroOrMoreDo(f) {
+ return (x) => {
+ var wrapped_old_x = { _tag: "Some", value: x };
+ var wrapped_new_x = wrapped_old_x;
+ while (wrapped_new_x._tag != "None") {
+ wrapped_old_x = wrapped_new_x;
+ wrapped_new_x = thenDo(wrapped_old_x, f);
+ }
+ ;
+ return wrapped_old_x;
+ };
+}
+exports.zeroOrMoreDo = zeroOrMoreDo;
+/**
+* @description Not. like the `^` inside regex of [^f].
+* returns a function `F(x)` such that if `f(x)` is `None`,
+* returns the x consuming a char; if `f(x)` is not None, F(x)
+* returns `None`.
+* @param f: the function forbidden to be matched.
+* @returns: combined function `F`.
+*/
+function notDo(f) {
+ return (x) => {
+ let wrapped_x = {
+ _tag: "Some",
+ value: x
+ };
+ let f_x = thenDo(wrapped_x, f);
+ if (f_x._tag != "None") {
+ return { _tag: "None" };
+ }
+ else {
+ return thenDo(wrapped_x, matchAny);
+ }
+ };
+}
+exports.notDo = notDo;
+/**
+ * if `x` is matched by `f` once, returns `f(x)`. Otherwise,
+ * returns x
+ * similar to `?` in regex `f?`.
+ * @param f : the function to be matched
+ * @returns return wrapped f(x)
+ */
+function zeroOrOnceDo(f) {
+ return (x) => {
+ var wrapped_old_x = { _tag: "Some", value: x };
+ var wrapped_new_x = thenDo(wrapped_old_x, f);
+ if (wrapped_new_x._tag != "None") {
+ return wrapped_new_x;
+ }
+ else {
+ return wrapped_old_x;
+ }
+ };
+}
+exports.zeroOrOnceDo = zeroOrOnceDo;
+function tokenize(input) {
+ var input_matchee_pair = toSome({ matched: "",
+ remained: input });
+ // integer = ([+]|[-])?\d\d*
+ let integer = (x) => {
+ let wrapped_x = toSome(x);
+ let plusMinus = orDo(match1Char('+'), match1Char('-')); // ([+]|[-])
+ let d = matchRange('0', '9'); // \d
+ var result = thenDo(thenDo(thenDo(wrapped_x, zeroOrOnceDo(plusMinus)), d), zeroOrMoreDo(d));
+ if (result._tag == "Some") {
+ result.value.matched_type = TokenType.INT;
+ }
+ return result;
+ };
+ let space = (x) => {
+ let wrapped_x = toSome(x);
+ let s_aux = orDo(match1Char(' '), match1Char('\t')); // (" " | "\t")
+ var result = thenDo(thenDo(wrapped_x, s_aux), zeroOrMoreDo(s_aux));
+ if (result._tag == "Some") {
+ result.value.matched_type = TokenType.SP;
+ }
+ return result;
+ };
+ let newline = (x) => {
+ let wrapped_x = toSome(x);
+ // nl = \r?\n
+ let result = thenDo(thenDo(wrapped_x, zeroOrOnceDo(match1Char('\r'))), match1Char('\n'));
+ if (result._tag == "Some") {
+ result.value.matched_type = TokenType.NL;
+ }
+ return result;
+ };
+ let term = (token_list, x) => {
+ var ln = 1;
+ var col = 0;
+ var old_x = x;
+ let term_list = [newline, space, integer];
+ let term_aux = term_list.reduce((x, y) => orDo(x, y));
+ var new_x = thenDo(old_x, term_aux);
+ while (new_x._tag != "None") {
+ if (new_x.value.matched_type != TokenType.NL) {
+ col += new_x.value.matched.length;
+ token_list.push({ text: new_x.value.matched,
+ type: new_x.value.matched_type,
+ ln: ln,
+ col: col });
+ }
+ else {
+ col = 0;
+ ln += 1;
+ token_list.push({ text: new_x.value.matched,
+ type: new_x.value.matched_type,
+ ln: ln,
+ col: col });
+ }
+ old_x = toSome({ matched: "",
+ remained: new_x.value.remained });
+ new_x = thenDo(old_x, term_aux);
+ }
+ if (old_x.value.remained.length) {
+ console.log(token_list);
+ throw new Error("the code can't be tokenized is near Ln. " + ln + ", Col." + col
+ + ", starting with " + old_x.value.remained.substring(0, 10));
+ }
+ return token_list;
+ };
+ console.log(term([], input_matchee_pair));
+ // TODO: id, string, space, basic operator, 3 marks: @, {, }.
+}
+exports.tokenize = tokenize;
projects / clo / blobdiff