/**
 * Created by Aleksey Chichenkov <a.chichenkov@initi.ru> on 1/30/19.
 */
 
var Lexer = require("./lexer.js");


// See Allow Lexemes in ./lexer.js on top file

/**
 * create Lexer and set string
 *
 * Here you can found next lexemes:
 *  - ID
 *  - EQ
 *  - STRING_LITERAL
 *  - AND
 *  - ID
 *  - GT
 *  - INTEGER
 * @type {Lexer}
 */
var lexer = new Lexer("id == 'string' and a > 10");


var token;
while(token = lexer.next()){
    /**
     * token has next fields
     *  - error: number, // 0 if not error
     *  - lexeme: string, type of token (ID|EQ|STRING_LITERAL)
     *  - value: string, value what found between <start> and <end>
     *  - start: number,
     *  - end: number
     *
     *  and if lexeme == "OID_LITERAL"
     *  - lsb - position left square bracket
     *  - rsb - position right square bracket
     */

    switch (token.error) {
        case 0:
            console.log("TOKEN:", token.lexeme, token.value);
            break;
        case -2:
            console.log("end of search");
            break;
        case -1:
            console.log("Not found any lexemes or errors or anything else");
            break;
        case 1:
            console.log("Found unknown symbol on position");
            break;
        case 2:
            console.log("Not found close quote");
            break;
        case 3:
            console.log("Unexpected symbol in oid structure");
            break;
        case 4:
            console.log("Not found close bracket for Oid");
            break;
    }
}