generated_message_tctable_impl.h | Explore in Territory

// Protocol Buffers - Google's data interchange format
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// https://developers.google.com/protocol-buffers/
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#ifndef GOOGLE_PROTOBUF_GENERATED_MESSAGE_TCTABLE_IMPL_H__
#define GOOGLE_PROTOBUF_GENERATED_MESSAGE_TCTABLE_IMPL_H__

#include <cstdint>
#include <type_traits>

#include <google/protobuf/port.h>
#include <google/protobuf/extension_set.h>
#include <google/protobuf/generated_message_tctable_decl.h>
#include <google/protobuf/message_lite.h>
#include <google/protobuf/metadata_lite.h>
#include <google/protobuf/parse_context.h>
#include <google/protobuf/wire_format_lite.h>

// Must come last:
#include <google/protobuf/port_def.inc>

namespace google {
namespace protobuf {

class Message;
class UnknownFieldSet;

namespace internal {

// Field layout enums.
//
// Structural information about fields is packed into a 16-bit value. The enum
// types below represent bitwise fields, along with their respective widths,
// shifts, and masks.
//
//     Bit:
//     +-----------------------+-----------------------+
//     |15        ..          8|7         ..          0|
//     +-----------------------+-----------------------+
//     :  .  :  .  :  .  :  .  :  .  :  .  : 3|========| [3] FieldType
//     :     :     :     :     :     : 5|=====|  :     : [2] FieldCardinality
//     :  .  :  .  :  .  :  . 8|========|  :  .  :  .  : [3] FieldRep
//     :     :     :   10|=====|     :     :     :     : [2] TransformValidation
//     :  .  :  .12|=====|  .  :  .  :  .  :  .  :  .  : [2] FormatDiscriminator
//     +-----------------------+-----------------------+
//     |15        ..          8|7         ..          0|
//     +-----------------------+-----------------------+
//
namespace field_layout {
// clang-format off

// Field kind (3 bits):
// These values broadly represent a wire type and an in-memory storage class.
enum FieldKind : uint16_t { … };

static_assert …;

// Cardinality (2 bits):
// These values determine how many values a field can have and its presence.
// Packed fields are represented in FieldType.
enum Cardinality : uint16_t { … };

// Field representation (3 bits):
// These values are the specific refinements of storage classes in FieldType.
enum FieldRep : uint16_t { … };

// Transform/validation (2 bits):
// These values determine transforms or validation to/from wire format.
enum TransformValidation : uint16_t { … };

static_assert …;
static_assert …;

// Format discriminators (2 bits):
enum FormatDiscriminator : uint16_t { … };

// Update this assertion (and comments above) when adding or removing bits:
static_assert …;

// This assertion should not change unless the storage width changes:
static_assert …;

// Convenience aliases (16 bits, with format):
enum FieldType : uint16_t { … };
// clang-format on
}  // namespace field_layout

// PROTOBUF_TC_PARAM_DECL are the parameters for tailcall functions, it is
// defined in port_def.inc.
//
// Note that this is performance sensitive: changing the parameters will change
// the registers used by the ABI calling convention, which subsequently affects
// register selection logic inside the function.

// PROTOBUF_TC_PARAM_PASS passes values to match PROTOBUF_TC_PARAM_DECL.
#define PROTOBUF_TC_PARAM_PASS …

#ifndef NDEBUG
template <size_t align>
void AlignFail(uintptr_t address) { … }

extern template void AlignFail<4>(uintptr_t);
extern template void AlignFail<8>(uintptr_t);
#endif

// TcParser implements most of the parsing logic for tailcall tables.
class PROTOBUF_EXPORT TcParser final { … };

}  // namespace internal
}  // namespace protobuf
}  // namespace google

#include <google/protobuf/port_undef.inc>

#endif  // GOOGLE_PROTOBUF_GENERATED_MESSAGE_TCTABLE_IMPL_H__
chromium/third_party/protobuf/src/google/protobuf/generated_message_tctable_impl.h
