//============================================================================//
//                                                                            //
//                       artichoke programming language                       //
//                                                                            //
//      Copyright (C) 2025 Erick Saul Guzman Ramos, whoami.artichoke.dev      //
//                                                                            //
//                                                                            //
//  This program is free software: you can redistribute it and/or modify      //
//  it under the terms of the GNU Affero General Public License as published  //
//  by the Free Software Foundation, either version 3 of the License, or      //
//  (at your option) any later version.                                       //
//                                                                            //
//  This program is distributed in the hope that it will be useful,           //
//  but WITHOUT ANY WARRANTY; without even the implied warranty of            //
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the             //
//  GNU Affero General Public License for more details.                       //
//                                                                            //
//  You should have received a copy of the GNU Affero General Public License  //
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.    //
//                                                                            //
//============================================================================//

#pragma once

#include <cstddef>

namespace arti::lang {

  constexpr size_t CE_TAB_SIZE = 2;

  static inline constexpr bool isLetter(char c) {
    return ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'));
  }

  static inline constexpr char toLower(char c) {
    if (isLetter(c)) {
      return (c | 0b00100000);
    }

    return c;
  }

  static inline constexpr bool isDigit(char c) {
    return (c >= '0' && c <= '9');
  }

  static inline constexpr bool isFirstIdentChar(char c) {
    return isLetter(c) || c == '_';
  }

  static inline constexpr bool isIdentChar(char c) {
    return isLetter(c) || c == '_' || isDigit(c);
  }

  static inline constexpr bool isHexChar(char c) {
    return isDigit(c) || ((toLower(c) >= 'a' && toLower(c) <= 'f'));
  }

  static inline constexpr bool isBinaryChar(char c) {
    return c == '0' || c == '1';
  }

  static inline constexpr bool isOctalChar(char c) {
    return (c >= '0' && c <= '7');
  }

  static inline constexpr bool isWhiteSpace(char c) {
    return (c == ' ' || c == '\t' || c == '\n');
  }

} // namespace arti::lang