re2-js-generator/lexer.l

var lex = [
    "ERR",
    "DELIM",

    "LCB",
    "RCB",
    "INTEGER",

    "FLOAT_LITERAL",
    "BOOL_LITERAL",
    "INTEGER_LITERAL",
];

var searchString = function (_str, _quote, _yylexstart, _yycursor) {
    var found_back_slash = false;
    _yycursor++;
    while(_yycursor < _str.length){
        var char = _str[_yycursor];
        if(_quote == '"') {
            switch (char) {
                case "\\":
                    found_back_slash = true;
                    break;
                case '"':
                    if(!found_back_slash) {
                        return { success: true, pos: _yycursor + 1 }
                    }
                    found_back_slash = false;
                    break;
            }
        } else if(_quote == "'") {
            switch (char) {
                case "\\":
                    found_back_slash = true;
                    break;
                case "'":
                    if(!found_back_slash) {
                        return { success: true, pos: _yycursor + 1 }
                    }
                    found_back_slash = false;
                    break;
            }
        }
        _yycursor++;
    }

    return {success: false, pos: _yycursor + 1 }
};

var addLexeme = function(_str, _yylexstart, _yycursor, _lexeme) {
    if(_lexeme !== "ERR"){
        console.log(print_f("found lex: %s; start: %s; end: %s; result => %s", _lexeme, _yylexstart, _yycursor, _str.substring(_yylexstart, _yycursor)));
    } else {
      console.log(print_f("search end\n"));
      return true;
    }
};

var unknownSymbol = function(_str, _yylexstart, _yycursor){
    throw print_f("Found unknown symbol on position: %s", _yycursor)
};

var notFoundCloseQuote = function (_str, _yylexstart, _yycursor) {
    throw print_f("Not found close quote start: %s", _yycursor)
};

var start_search = function(_str) {
        console.log("start search", _str);
        var id = 1;
        var yych = null;
        var YYLEXSTART = 0;
        var yyaccept = 0;
        var YYCURSOR = 0;
        var YYMARKER = 0;
        var str = _str;

        var reset = function(){
            yyaccept = 0;
            id = 1;
            YYLEXSTART = YYCURSOR;
            YYMARKER = YYCURSOR;
        };

while(true)
{
    switch(id)       /*!re2c
            re2c:define:YYCTYPE = _r2c_var_;
            re2c:yyfill:enable = 0;

            D                           = [0-9];
            end                         = "\x00";
            L                           = [A-Za-z_];
            RL                          = [\U00000400-\U00000451];

            CR                          = "\r";
            LF                          = "\n";
            CRLF                        = CR?LF;
            INTEGER                     = "-"?D+;
            SP                          = " ";
            TAB                         = "\t";

            DELIM                       = SP|TAB|CR|LF;

            LSB                         = "[";
            RSB                         = "]";
            LCB                         = "(";
            RCB                         = ")";
            COLON                       = ":";
            COMMA                       = ",";
            DOT                         = ".";
            REM                         = "%";
            GT                          = ">";
            GTE                         = ">=";
            LT                          = "<";
            LTE                         = "<=";
            EQ                          = "==";
            NEQ                         = "!=";

            AND                         = 'AND';
            OR                          = 'OR';
            NOT                         = 'NOT';
            LIKE                        = 'LIKE';
            NLIKE                       = 'NLIKE';

            ADDRESS                     = "Address";
            TIME                        = "Time";
            TIMEDIFF                    = "TimeDiff";

            BOOL_LITERAL                = 'true'|'false';
            FLOAT_LITERAL               = "-"? D* "." D+ ("e" "-"? D+)?;
            INTEGER_LITERAL             = INTEGER;
            ID                          = L(L|D)*;

            QU = "\"";
            SQU = "'";




            end                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "ERR")) return; reset(); break; }

            LSB                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "LSB")) return; reset(); break; }
            RSB                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "RSB")) return; reset(); break; }
            LCB                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "LCB")) return; reset(); break; }
            RCB                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "RCB")) return; reset(); break; }
            COLON                       { if(addLexeme(str, YYLEXSTART, YYCURSOR, "COLON")) return; reset(); break; }
            COMMA                       { if(addLexeme(str, YYLEXSTART, YYCURSOR, "COMMA")) return; reset(); break; }
            DOT                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "DOT")) return; reset(); break; }
            REM                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "REM")) return; reset(); break; }

            GT                          { if(addLexeme(str, YYLEXSTART, YYCURSOR, "GT")) return; reset(); break; }
            GTE                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "GTE")) return; reset(); break; }
            LT                          { if(addLexeme(str, YYLEXSTART, YYCURSOR, "LT")) return; reset(); break; }
            LTE                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "LTE")) return; reset(); break; }
            EQ                          { if(addLexeme(str, YYLEXSTART, YYCURSOR, "EQ")) return; reset(); break; }
            NEQ                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "NEQ")) return; reset(); break; }
            LIKE                        { if(addLexeme(str, YYLEXSTART, YYCURSOR, "LIKE")) return; reset(); break; }
            NLIKE                       { if(addLexeme(str, YYLEXSTART, YYCURSOR, "NLIKE")) return; reset(); break; }

            AND                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "AND")) return; reset(); break; }
            OR                          { if(addLexeme(str, YYLEXSTART, YYCURSOR, "OR")) return; reset(); break; }
            NOT                         { if(addLexeme(str, YYLEXSTART, YYCURSOR, "NOT")) return; reset(); break; }

            ADDRESS                     { if(addLexeme(str, YYLEXSTART, YYCURSOR, "ADDRESS")) return; reset(); break; }
            TIME                        { if(addLexeme(str, YYLEXSTART, YYCURSOR, "TIME")) return; reset(); break; }
            TIMEDIFF                    { if(addLexeme(str, YYLEXSTART, YYCURSOR, "TIMEDIFF")) return; reset(); break; }

            INTEGER_LITERAL             { if(addLexeme(str, YYLEXSTART, YYCURSOR, "INTEGER_LITERAL")) return; reset(); break; }
            FLOAT_LITERAL               { if(addLexeme(str, YYLEXSTART, YYCURSOR, "FLOAT_LITERAL")) return; reset(); break; }
            BOOL_LITERAL                { if(addLexeme(str, YYLEXSTART, YYCURSOR, "BOOL_LITERAL")) return; reset(); break; }

            ID                          { if(addLexeme(str, YYLEXSTART, YYCURSOR, "ID")) return; reset(); break; }
            DELIM                       { reset(); break;  }

            QU|SQU                      { id = 100000000; break;}

            [^]                         { if(unknownSymbol(str, YYLEXSTART, YYCURSOR)) return; reset(); break;  }
        */ENDER}
};

var print_f = function () {
    var r_str = "";
    var next = arguments[0];

    var rx = /(%[a-zA-Z]{1})/;
    var a = 1, match;
    while (match = rx.exec(next)) {
        var prev = next.substring(0, match.index);
        var macro = next.substring(match.index + 1, match.index + 2);
        next = next.substring(match.index + 2, next.length);
        r_str += prev;

        var arg = arguments[a];

        if(arg !== undefined) {
            switch (macro) {
                case "s":
                    if(arg.to_string && !arg.toString) r_str += arg.to_string();
                    if(arg.toString && !arg.to_string) r_str += arg.toString();
                    break;
                case "i":
                    r_str += (arg.to_number && arg.to_number()) || parseInt(arg);
                    break;
                case "f":
                    r_str += (arg.to_number && arg.to_number()) || parseFloat(arg);
                    break;
            }
        } else {
            r_str += "%" + macro;
        }
        a++;
    }

    r_str += next;

    return r_str;
};

console.log("TEST SINGLE")
start_search("[");
start_search("]");
start_search("(");
start_search(")");
start_search(":");
start_search(",");
start_search(".");
start_search("%");
start_search(">");
start_search(">=");
start_search("<");
start_search("<=");
start_search("==");
start_search("!=");
start_search("AND");
start_search("and");
start_search("OR");
start_search("or");
start_search("NOT");
start_search("not");
start_search("LIKE");
start_search("like");
start_search("NLIKE");
start_search("nlike");
start_search("Address");
start_search("Time");
start_search("TimeDiff");

console.log("TEST ALL")
start_search("[  ]  (  )  :  ,  .  %  >  >=  <  <=  ==  !=  AND  and  OR  or  NOT  not  LIKE  like  NLIKE  nlike  Address  Time  TimeDiff  ");

console.log("TEST STRING LITERAL");
start_search('  "111\\\"11\\\"1" "222222" ');
start_search("  '111\\\'11\\\'1' '222222' ");

//console.log("TEST FAILS");
//start_search('  sdfasdfasdfsdf "fasdf');