protobuf/upb/mini_table/common_internal.h

/*
 * Copyright (c) 2009-2022, Google LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Google LLC nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef UPB_MINI_TABLE_COMMON_INTERNAL_H_
#define UPB_MINI_TABLE_COMMON_INTERNAL_H_

#include "upb/base/descriptor_constants.h"

// Must be last.
#include "upb/port/def.inc"

typedef enum {
  kUpb_EncodedType_Double = 0,
  kUpb_EncodedType_Float = 1,
  kUpb_EncodedType_Fixed32 = 2,
  kUpb_EncodedType_Fixed64 = 3,
  kUpb_EncodedType_SFixed32 = 4,
  kUpb_EncodedType_SFixed64 = 5,
  kUpb_EncodedType_Int32 = 6,
  kUpb_EncodedType_UInt32 = 7,
  kUpb_EncodedType_SInt32 = 8,
  kUpb_EncodedType_Int64 = 9,
  kUpb_EncodedType_UInt64 = 10,
  kUpb_EncodedType_SInt64 = 11,
  kUpb_EncodedType_OpenEnum = 12,
  kUpb_EncodedType_Bool = 13,
  kUpb_EncodedType_Bytes = 14,
  kUpb_EncodedType_String = 15,
  kUpb_EncodedType_Group = 16,
  kUpb_EncodedType_Message = 17,
  kUpb_EncodedType_ClosedEnum = 18,

  kUpb_EncodedType_RepeatedBase = 20,
} upb_EncodedType;

typedef enum {
  kUpb_EncodedFieldModifier_FlipPacked = 1 << 0,
  kUpb_EncodedFieldModifier_IsRequired = 1 << 1,
  kUpb_EncodedFieldModifier_IsProto3Singular = 1 << 2,
} upb_EncodedFieldModifier;

enum {
  kUpb_EncodedValue_MinField = ' ',
  kUpb_EncodedValue_MaxField = 'I',
  kUpb_EncodedValue_MinModifier = 'L',
  kUpb_EncodedValue_MaxModifier = '[',
  kUpb_EncodedValue_End = '^',
  kUpb_EncodedValue_MinSkip = '_',
  kUpb_EncodedValue_MaxSkip = '~',
  kUpb_EncodedValue_OneofSeparator = '~',
  kUpb_EncodedValue_FieldSeparator = '|',
  kUpb_EncodedValue_MinOneofField = ' ',
  kUpb_EncodedValue_MaxOneofField = 'b',
  kUpb_EncodedValue_MaxEnumMask = 'A',
};

enum {
  kUpb_EncodedVersion_EnumV1 = '!',
  kUpb_EncodedVersion_ExtensionV1 = '#',
  kUpb_EncodedVersion_MapV1 = '%',
  kUpb_EncodedVersion_MessageV1 = '$',
  kUpb_EncodedVersion_MessageSetV1 = '&',
};

#ifdef __cplusplus
extern "C" {
#endif

UPB_INLINE char _upb_ToBase92(int8_t ch) {
  extern const char _kUpb_ToBase92[];
  UPB_ASSERT(0 <= ch && ch < 92);
  return _kUpb_ToBase92[ch];
}

UPB_INLINE char _upb_FromBase92(uint8_t ch) {
  extern const int8_t _kUpb_FromBase92[];
  if (' ' > ch || ch > '~') return -1;
  return _kUpb_FromBase92[ch - ' '];
}

UPB_INLINE bool _upb_FieldType_IsPackable(upb_FieldType type) {
  // clang-format off
  const unsigned kUnpackableTypes =
      (1 << kUpb_FieldType_String) |
      (1 << kUpb_FieldType_Bytes) |
      (1 << kUpb_FieldType_Message) |
      (1 << kUpb_FieldType_Group);
  // clang-format on
  return (1 << type) & ~kUnpackableTypes;
}

#ifdef __cplusplus
} /* extern "C" */
#endif

#include "upb/port/undef.inc"

#endif /* UPB_MINI_TABLE_COMMON_INTERNAL_H_ */