package ch.bfh.parser;

import ch.bfh.CalculatorLexer;
import ch.bfh.Token;

import java.util.HashMap;
import java.util.Map;

abstract class Parser{

    protected static Map<String, ExpressionParser> variables = new HashMap<>(); //'Persisted' Expressions when 'let' token was specified

    protected CalculatorLexer cl;
    protected Token lastToken;
    protected double value;

    protected abstract void parse();
    public abstract double getValue();
}