src/include/parser.hpp


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/* Grammar
 * Expression --> Term PrimeExpression
 * PrimeExpression --> (+|-)Expression | Null
 * Term --> Factor PrimeTerm
 * PrimeTerm --> (*|/)Term | Null
 * Factor --> -Expression | (Expression) | operand */
#pragma once
#include <string>
#include "tokenizer.hpp"
#include "syntax_tree.hpp"


class Parser {
private:
  // Private attributes.
  Tokenizer tokenizer = Tokenizer();
  Token **tokens;
  Token *current_token;
  // End of private attributes.
  // Private methods.
  void parseExpression();
  void parsePrimeExpression();
  void parseTerm();
  void parsePrimeTerm();
  void parseFactor();
  // End of private methods.
public:
  Parser();
  const SyntaxTree *parse(const std::string &input);
};