X-Git-Url: https://git.kianting.info/?a=blobdiff_plain;f=src%2Findex.js;h=15e18628b9bd679b10e00ed1215069f029b1dfe2;hb=d4dfd2e99f564ca880d40172687986ea3ce757f0;hp=411e166d95894b49998c1f4b59f51f567f5a11d5;hpb=cf712efc21fa3a711b8a09b953539c7a7c90f5d6;p=clo

diff --git a/src/index.js b/src/index.js
index 411e166..15e1862 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,404 +1,206 @@
 "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.tokenize = exports.zeroOrOnceDo = exports.notDo = exports.zeroOrMoreDo = exports.orDo = exports.thenDo = exports.charToCodepoint = exports.matchRange = exports.matchAny = exports.match1Char = exports.TokenType = void 0;
+exports.tkTreeToSExp = void 0;
 var fs = require('fs');
+const util = __importStar(require("util"));
+const p = __importStar(require("typescript-parsec"));
 /**
- * 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
- *
- * I_* // integer manipulation
- *
- * F_* // float manipulation
- *
- * SEMI_C// semi-colon
+ * # REPRESENTATION
  */
-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["FLO"] = 4] = "FLO";
-    TokenType[TokenType["INT"] = 5] = "INT";
-    TokenType[TokenType["F_ADD"] = 6] = "F_ADD";
-    TokenType[TokenType["F_SUB"] = 7] = "F_SUB";
-    TokenType[TokenType["F_MUL"] = 8] = "F_MUL";
-    TokenType[TokenType["F_DIV"] = 9] = "F_DIV";
-    TokenType[TokenType["I_ADD"] = 10] = "I_ADD";
-    TokenType[TokenType["I_SUB"] = 11] = "I_SUB";
-    TokenType[TokenType["I_MUL"] = 12] = "I_MUL";
-    TokenType[TokenType["I_DIV"] = 13] = "I_DIV";
-    TokenType[TokenType["L_PAREN"] = 14] = "L_PAREN";
-    TokenType[TokenType["R_PAREN"] = 15] = "R_PAREN";
-    TokenType[TokenType["L_BRACK"] = 16] = "L_BRACK";
-    TokenType[TokenType["R_BRACK"] = 17] = "R_BRACK";
-    TokenType[TokenType["L_BRACE"] = 18] = "L_BRACE";
-    TokenType[TokenType["R_BRACE"] = 19] = "R_BRACE";
-    TokenType[TokenType["COMMA"] = 20] = "COMMA";
-    TokenType[TokenType["DOT"] = 21] = "DOT";
-    TokenType[TokenType["COLON"] = 22] = "COLON";
-    TokenType[TokenType["SEMI_C"] = 23] = "SEMI_C";
-    TokenType[TokenType["AT"] = 24] = "AT";
-    TokenType[TokenType["HASH"] = 25] = "HASH";
-    TokenType[TokenType["EQ"] = 26] = "EQ";
-    TokenType[TokenType["SET"] = 27] = "SET";
-    TokenType[TokenType["GT"] = 28] = "GT";
-    TokenType[TokenType["LT"] = 29] = "LT";
-    TokenType[TokenType["GE"] = 30] = "GE";
-    TokenType[TokenType["LE"] = 31] = "LE";
-    TokenType[TokenType["R_ARROW"] = 32] = "R_ARROW";
-})(TokenType || (exports.TokenType = TokenType = {}));
 /**
- * @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.
- * @returns the updated `MatchedPair` wrapped in `Some(x)` or `None`.
+ * convert a `tkTree` AST to S-expr string
+ * @param t the `tkTree`
+ * @returns S-expr String
  */
-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: {
-                    matched: m.matched + charToBeMatched,
-                    remained: m.remained.substring(1)
-                } };
+function tkTreeToSExp(t) {
+    var str = "";
+    if (Array.isArray(t)) {
+        let strArray = t.map((x) => tkTreeToSExp(x));
+        str = "(" + strArray.join(" ") + ")";
+    }
+    else {
+        if (t === undefined) {
+            str = "%undefined";
         }
         else {
-            return { _tag: "None" };
+            str = t;
         }
-    };
+    }
+    return str;
 }
-exports.match1Char = match1Char;
-;
+exports.tkTreeToSExp = tkTreeToSExp;
+/**inspect the inner of the representation. */
+let repr = (x) => { return util.inspect(x, { depth: null }); };
+var TokenKind;
+(function (TokenKind) {
+    TokenKind[TokenKind["Seperator"] = 0] = "Seperator";
+    TokenKind[TokenKind["Semicolon"] = 1] = "Semicolon";
+    TokenKind[TokenKind["Number"] = 2] = "Number";
+    TokenKind[TokenKind["Op"] = 3] = "Op";
+    TokenKind[TokenKind["ExprMark"] = 4] = "ExprMark";
+    TokenKind[TokenKind["ExcapeAt"] = 5] = "ExcapeAt";
+    TokenKind[TokenKind["Paren"] = 6] = "Paren";
+    TokenKind[TokenKind["SpaceNL"] = 7] = "SpaceNL";
+    TokenKind[TokenKind["Id"] = 8] = "Id";
+    TokenKind[TokenKind["Str"] = 9] = "Str";
+    TokenKind[TokenKind["Comment"] = 10] = "Comment";
+})(TokenKind || (TokenKind = {}));
+/**
+ * Parsing
+ */
+const lexer = p.buildLexer([
+    [true, /^\d+(\.\d+)?/g, TokenKind.Number],
+    [true, /^\\\@/g, TokenKind.ExcapeAt],
+    [true, /^\/\*([^/]|\/[^*])*\*\//g, TokenKind.Comment],
+    [true, /^\;/g, TokenKind.Semicolon],
+    [true, /^[-][-][-]/g, TokenKind.Seperator],
+    [true, /^[\+\-\*\/\&\|\!\^\<\>\~\=\?]+/g, TokenKind.Op],
+    [true, /^\@/g, TokenKind.ExprMark],
+    [true, /^[()\[\]{}]/g, TokenKind.Paren],
+    [true, /^["]([\"]|[\\].)*["]/g, TokenKind.Str],
+    [true, /^[']([\']|[\\].)*[']/g, TokenKind.Str],
+    [true, /^[()\[\]{}]/g, TokenKind.Paren],
+    [true, /^[^\/\\\@\s\n\t\r;]+/g, TokenKind.Id],
+    [true, /^(\s|\n|\r|\t)+/g, TokenKind.SpaceNL],
+]);
 /**
  *
- * @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`.
+ * # TEST
  */
-function matchAny(m) {
-    if (m.remained.length >= 1) {
-        return { _tag: "Some", value: {
-                matched: m.matched + m.remained[0],
-                remained: m.remained.substring(1)
-            } };
+const inputTxt = `import a as b; /*bacourt*/
+/* ba choir 
+ipsum lorem*/
+
+import you as john;
+---
+
+臺中市\\\@
+
+公園
+@1+2==3;
+
+console.log("122");@
+
+山頂
+`;
+const PROG = p.rule();
+const SEGMENT = p.rule();
+const IMPORT = p.rule();
+const IMPORTS = p.rule();
+const SEMICOLON = p.rule();
+const EXCAPE_AT = p.rule();
+const NOT_AT_TEXT = p.rule();
+const CONTENT = p.rule();
+let doubleMinus = { type: 'Punctuator', value: '--' };
+let doubleMinus2 = p.str('--');
+const TERM = p.rule();
+function applySegment(input) {
+    let unpackedInnerExprs = input[1].map((x) => { return x.text; });
+    return ["%exprs", unpackedInnerExprs];
+}
+function applySemiColon(value) {
+    return value.text;
+}
+function applyParts(first, second) {
+    return ["%clo", first, second[1]];
+}
+function applyComment(value) {
+    return [value.text];
+}
+function applyImport(input) {
+    let importTail = input[1].map(x => x.text);
+    return ["import"].concat(importTail);
+}
+;
+/*
+function applyImportComment(input: [Token<TokenKind>,Token<TokenKind>[],
+    tkTree, Token<TokenKind.Comment>]) : tkTree{
+    let importTail = input[1].map(x=>x.text);
+    let comment = [input[3].text];
+    return ["import"].concat(importTail).concat(comment);
+};*/
+function applyImports(input) {
+    let resultBody = [input[0]].concat(input[1]);
+    let resultWrapper = ["%import", resultBody];
+    return resultWrapper;
+}
+;
+function applyNotAtText(value) {
+    if (value.text == "\\\@") {
+        return '@';
     }
     else {
-        return { _tag: "None" };
+        return value.text;
     }
 }
-exports.matchAny = matchAny;
-/**
- * @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) => {
-        if (m.remained.length < 1) {
-            return { _tag: "None" };
-        }
-        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)
-                } };
-        }
-        else {
-            return { _tag: "None" };
-        }
-    };
+;
+function applyText(input) {
+    return ["%text", input];
 }
-exports.matchRange = matchRange;
 ;
+function applyContent(input) {
+    return ["%content", input];
+}
+;
+function applySpaceNL(value) {
+    return value.text;
+}
 /**
- * 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`.
+ * IMPORTEE:  Number, Op, Paren, Id, Str, Comment,
  */
-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;
+let IMPORTEE = p.alt(p.tok(TokenKind.Number), p.tok(TokenKind.Op), p.tok(TokenKind.Paren), p.tok(TokenKind.Id), p.tok(TokenKind.Str), p.tok(TokenKind.SpaceNL), p.tok(TokenKind.Comment));
+let NOT_AT = p.alt(p.tok(TokenKind.Seperator), p.tok(TokenKind.Semicolon), p.tok(TokenKind.Number), p.tok(TokenKind.ExcapeAt), p.tok(TokenKind.Op), p.tok(TokenKind.Paren), p.tok(TokenKind.SpaceNL), p.tok(TokenKind.Id), p.tok(TokenKind.Str), p.tok(TokenKind.Comment));
 /**
- *  @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`.
+ * PROG : IMPORTS '---' CONTENT;
  */
-function thenDo(input, f) {
-    if (input._tag == "None") {
-        return input;
-    }
-    else {
-        let inner = input.value;
-        return f(inner);
-    }
-}
-exports.thenDo = thenDo;
+PROG.setPattern(p.lrec_sc(IMPORTS, p.seq(p.str('---'), CONTENT), applyParts));
 /**
- * @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
+ * NOT_AT_TEXT : NOT_AT
  */
-function orDo(f1, f2) {
-    return (x) => {
-        let f1x = (f1(x));
-        {
-            if (f1x._tag == "None") {
-                return f2(x);
-            }
-            else {
-                return f1x;
-            }
-        }
-    };
-}
-exports.orDo = orDo;
+NOT_AT_TEXT.setPattern(p.apply(NOT_AT, applyNotAtText));
+IMPORTS.setPattern(p.apply(p.seq(IMPORT, p.rep(IMPORT)), applyImports));
 /**
-* @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;
+ * IMPORT :
+ * 'import' IMPORTEE* SEMICOLON |
+ * COMMENT |
+ */
+IMPORT.setPattern(p.alt(p.apply(p.seq(p.str('import'), p.rep_sc(IMPORTEE), SEMICOLON), applyImport), p.apply(p.tok(TokenKind.Comment), applyComment), p.apply(p.tok(TokenKind.SpaceNL), applySpaceNL)));
 /**
-* @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;
+ * SEMICOLON : ';';
+ */
+SEMICOLON.setPattern(p.apply(p.tok(TokenKind.Semicolon), applySemiColon));
 /**
- * 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)
+ * SEGMENT : '@' NOT_AT* '@' |
+ * (NOT_AT_TEXT | EXCAPE_AT)*
  */
-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 });
-    /**
-     * generate a parser of a basic term (b_term)
-     * @param pattern : the pattern parser
-     * @param token_type : the returning token type
-     * @returns a wrapped parser.
-     */
-    function bTerm(pattern, token_type) {
-        return (x) => {
-            let wrapped_x = toSome(x);
-            let result = pattern(wrapped_x);
-            if (result._tag == "Some") {
-                result.value.matched_type = token_type;
-            }
-            return result;
-        };
-    }
-    let d = matchRange('0', '9'); // \d
-    // [+-]
-    let plusMinus = orDo(match1Char('+'), match1Char('-'));
-    let s_aux = orDo(match1Char(' '), match1Char('\t')); // (" " | "\t")
-    // integer = ([+]|[-])?\d\d*
-    let integer = bTerm((x) => thenDo(thenDo(thenDo(x, zeroOrOnceDo(plusMinus)), d), zeroOrMoreDo(d)), TokenType.INT);
-    // space = [ \t]+
-    let space = bTerm((x) => thenDo(thenDo(x, s_aux), zeroOrMoreDo(s_aux)), TokenType.INT);
-    // newline = \r?\n
-    let newline = bTerm((x) => thenDo(thenDo(x, zeroOrOnceDo(match1Char('\r'))), match1Char('\n')), TokenType.NL);
-    // [_A-Za-z]
-    let idHead = orDo(orDo(matchRange('a', 'z'), matchRange('A', 'Z')), match1Char('_'));
-    let idRemained = orDo(idHead, matchRange('0', '9')); // [_A-Za-z0-9]
-    // id = [_A-Za-z][_A-Za-z0-9]*
-    let id = bTerm((x) => thenDo(thenDo(x, idHead), zeroOrMoreDo(idRemained)), TokenType.ID);
-    let doublequote = match1Char("\"");
-    // [\\][\"]
-    let escapeReverseSlash = (x) => thenDo(thenDo(toSome(x), match1Char("\\")), doublequote);
-    // ([\\]["]|[^\"])*
-    let stringInnerPattern = zeroOrMoreDo(orDo(escapeReverseSlash, notDo(match1Char("\""))));
-    // str = ["]([\\]["]|[^"])*["]
-    let str = bTerm((x) => thenDo(thenDo(thenDo(x, doublequote), stringInnerPattern), doublequote), TokenType.STR);
-    // float = [+-]?\d+[.]\d+
-    function floatPattern(x) {
-        return thenDo(thenDo(thenDo(thenDo(thenDo(thenDo(x, zeroOrOnceDo(plusMinus)), d), zeroOrMoreDo(d)), match1Char(".")), d), zeroOrMoreDo(d));
-    }
-    ;
-    let float = bTerm(floatPattern, TokenType.FLO);
-    // operators
-    // +.
-    let floatAdd = bTerm((x) => thenDo(thenDo(x, match1Char("+")), match1Char(".")), TokenType.F_ADD);
-    // +.
-    let floatSub = bTerm((x) => thenDo(thenDo(x, match1Char("-")), match1Char(".")), TokenType.F_SUB);
-    // *.
-    let floatMul = bTerm((x) => thenDo(thenDo(x, match1Char("*")), match1Char(".")), TokenType.F_MUL);
-    // /.
-    let floatDiv = bTerm((x) => thenDo(thenDo(x, match1Char("/")), match1Char(".")), TokenType.F_DIV);
-    // ==
-    let eq = bTerm((x) => thenDo(thenDo(x, match1Char("=")), match1Char("=")), TokenType.EQ);
-    // >=
-    let ge = bTerm((x) => thenDo(thenDo(x, match1Char(">")), match1Char("=")), TokenType.GE);
-    // <=
-    let le = bTerm((x) => thenDo(thenDo(x, match1Char("<")), match1Char("=")), TokenType.LE);
-    // ->
-    let rightArrow = bTerm((x) => thenDo(thenDo(x, match1Char("-")), match1Char(">")), TokenType.R_ARROW);
-    /**
-     * unary operator : generating the pattern of basic unary operator
-     * @param char : uniry char for the operator
-     * @param token_type : the corresponding token_type
-     */
-    function unaryOp(char, token_type) {
-        return bTerm((x) => thenDo(x, match1Char(char)), token_type);
-    }
-    ;
-    let intAdd = unaryOp('+', TokenType.I_ADD);
-    let intSub = unaryOp('-', TokenType.I_SUB);
-    let intMul = unaryOp('*', TokenType.I_MUL);
-    let intDiv = unaryOp('/', TokenType.I_DIV);
-    let lParen = unaryOp('(', TokenType.L_PAREN);
-    let rParen = unaryOp(')', TokenType.R_PAREN);
-    let lBracket = unaryOp('[', TokenType.L_BRACK);
-    let rBracket = unaryOp(']', TokenType.R_BRACK);
-    let lBrace = unaryOp('{', TokenType.L_BRACE);
-    let rBrace = unaryOp('}', TokenType.R_BRACE);
-    let comma = unaryOp(',', TokenType.COMMA);
-    let dot = unaryOp('.', TokenType.DOT);
-    let colon = unaryOp(':', TokenType.COLON);
-    let semicolon = unaryOp(';', TokenType.SEMI_C);
-    let at = unaryOp('@', TokenType.AT);
-    let hash = unaryOp('#', TokenType.HASH);
-    let set = unaryOp('=', TokenType.SET);
-    let greaterthan = unaryOp('>', TokenType.GT);
-    let lessthan = unaryOp('<', TokenType.LE);
-    let term = (token_list, x) => {
-        var ln = 1;
-        var col = 0;
-        var old_x = x;
-        let term_list = [float, newline, space, integer, str, id,
-            floatAdd, floatSub, floatMul, floatDiv,
-            intAdd, intSub, intMul, intDiv,
-            eq, ge, le, rightArrow,
-            lParen, rParen, lBracket, rBracket, lBrace, rBrace,
-            comma, dot, colon, semicolon, at, hash,
-            set, greaterthan, lessthan];
-        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;
+SEGMENT.setPattern(p.alt(p.apply(p.rep_sc(NOT_AT_TEXT), applyText), p.apply(p.seq(p.str('@'), p.rep(NOT_AT), p.str('@')), applySegment)));
+/**
+ * CONTENT : SEGMENT*
+ */
+CONTENT.setPattern(p.apply(p.rep(SEGMENT), applyContent));
+let tree = p.expectSingleResult(p.expectEOF(PROG.parse(lexer.parse(inputTxt))));
+console.log("RESULT=" + tkTreeToSExp(tree));