ZoneInfoLow.h

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/*
 * MIT License
 * Copyright (c) 2023 Brian T. Park
 */
 
#ifndef ACE_TIME_ZONE_INFO_LOW_H
#define ACE_TIME_ZONE_INFO_LOW_H
 
#include <stdint.h>
 
namespace ace_time{
namespace zoneinfolow {
 
template<typename S>
struct ZoneContext {
  static const int16_t kInvalidYear = -32768;
 
  static const int8_t kInvalidYearTiny = -128;
 
  static const int16_t kMaxUntilYear = 32767;
 
  static const int8_t kMaxUntilYearTiny = 127;
 
  static const int16_t kMaxYear = kMaxUntilYear - 1;
 
  static const int8_t kMaxYearTiny = kMaxUntilYearTiny - 1;
 
  static const int16_t kMinYear = -32767;
 
  static const int8_t kMinYearTiny = -127;
 
  static const uint8_t kSuffixW = 0x00;
 
  static const uint8_t kSuffixS = 0x10;
 
  static const uint8_t kSuffixU = 0x20;
 
  int16_t const startYear;
 
  int16_t const untilYear;
 
  int16_t const startYearAccurate;
 
  int16_t const untilYearAccurate;
 
  int16_t const baseYear;
 
  int16_t const maxTransitions;
 
  const char* const tzVersion;
 
  uint8_t const numFragments;
 
  uint8_t const numLetters;;
 
  const char* const* const fragments;
 
  const char* const* const letters;
};
 
template<typename S>
struct ZoneRule {
  int8_t const fromYear;
 
  int8_t const toYear;
 
  uint8_t const inMonth;
 
  uint8_t const onDayOfWeek;
 
  int8_t const onDayOfMonth;
 
  uint8_t const atTimeCode;
 
  uint8_t const atTimeModifier;
 
  uint8_t const deltaCode;
 
  uint8_t const letterIndex;
};
 
template<typename S>
struct ZonePolicy {
  const ZoneRule<S>* const rules;
  uint8_t const numRules;
};
 
template<typename S>
struct ZoneEra {
  const ZonePolicy<S>* const zonePolicy;
 
  const char* const format;
 
  int8_t const offsetCode;
 
  uint8_t const deltaCode;
 
  int8_t const untilYear;
 
  uint8_t const untilMonth;
 
  uint8_t const untilDay;
 
  uint8_t const untilTimeCode;
 
  uint8_t const untilTimeModifier;
};
 
template<typename S, typename ZC>
struct ZoneInfo {
  const char* const name;
 
  uint32_t const zoneId;
 
  const ZC* const zoneContext;
 
  uint8_t const numEras;
 
  const ZoneEra<S>* const eras;
 
  const ZoneInfo* const targetInfo;
};
 
}
}
 
#endif