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protobuf/upb/message/accessors.h

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/*
* 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
* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UPB_MESSAGE_ACCESSORS_H_
#define UPB_MESSAGE_ACCESSORS_H_
#include "upb/collections/array.h"
#include "upb/message/extension_internal.h"
#include "upb/message/internal.h"
#include "upb/mini_table/common.h"
#include "upb/mini_table/enum_internal.h"
#include "upb/mini_table/field_internal.h"
// Must be last.
#include "upb/port/def.inc"
#ifdef __cplusplus
extern "C" {
#endif
UPB_INLINE bool _upb_MiniTableField_InOneOf(const upb_MiniTableField* field) {
return field->presence < 0;
}
UPB_INLINE void* _upb_MiniTableField_GetPtr(upb_Message* msg,
const upb_MiniTableField* field) {
return (char*)msg + field->offset;
}
UPB_INLINE const void* _upb_MiniTableField_GetConstPtr(
const upb_Message* msg, const upb_MiniTableField* field) {
return (char*)msg + field->offset;
}
UPB_INLINE void _upb_Message_SetPresence(upb_Message* msg,
const upb_MiniTableField* field) {
if (field->presence > 0) {
_upb_sethas_field(msg, field);
} else if (_upb_MiniTableField_InOneOf(field)) {
*_upb_oneofcase_field(msg, field) = field->number;
}
}
UPB_INLINE bool _upb_MiniTable_ValueIsNonZero(const void* default_val,
const upb_MiniTableField* field) {
char zero[16] = {0};
switch (_upb_MiniTableField_GetRep(field)) {
case kUpb_FieldRep_1Byte:
return memcmp(&zero, default_val, 1) != 0;
case kUpb_FieldRep_4Byte:
return memcmp(&zero, default_val, 4) != 0;
case kUpb_FieldRep_8Byte:
return memcmp(&zero, default_val, 8) != 0;
case kUpb_FieldRep_StringView: {
const upb_StringView* sv = (const upb_StringView*)default_val;
return sv->size != 0;
}
}
UPB_UNREACHABLE();
}
UPB_INLINE void _upb_MiniTable_CopyFieldData(void* to, const void* from,
const upb_MiniTableField* field) {
switch (_upb_MiniTableField_GetRep(field)) {
case kUpb_FieldRep_1Byte:
memcpy(to, from, 1);
return;
case kUpb_FieldRep_4Byte:
memcpy(to, from, 4);
return;
case kUpb_FieldRep_8Byte:
memcpy(to, from, 8);
return;
case kUpb_FieldRep_StringView: {
memcpy(to, from, sizeof(upb_StringView));
return;
}
}
UPB_UNREACHABLE();
}
// Here we define universal getter/setter functions for message fields.
// These look very branchy and inefficient, but as long as the MiniTableField
// values are known at compile time, all the branches are optimized away and
// we are left with ideal code. This can happen either through through
// literals or UPB_ASSUME():
//
// // Via string literals.
// bool FooMessage_set_bool_field(const upb_Message* msg, bool val) {
// const upb_MiniTableField field = {1, 0, 0, /* etc... */};
// // All value in "field" are compile-time known.
// _upb_Message_SetNonExtensionField(msg, &field, &value);
// }
//
// // Via UPB_ASSUME().
// UPB_INLINE bool upb_Message_SetBool(upb_Message* msg,
// const upb_MiniTableField* field,
// bool value, upb_Arena* a) {
// UPB_ASSUME(field->descriptortype == kUpb_FieldType_Bool);
// UPB_ASSUME(!upb_IsRepeatedOrMap(field));
// UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_1Byte);
// _upb_Message_SetField(msg, field, &value, a);
// }
//
// As a result, we can use these universal getters/setters for *all* message
// accessors: generated code, MiniTable accessors, and reflection. The only
// exception is the binary encoder/decoder, which need to be a bit more clever
// about how the read/write the message data, for efficiency.
//
// These functions work on both extensions and non-extensions. If the field
// of a setter is known to be a non-extension, the arena may be NULL and the
// returned bool value may be ignored since it will always succeed.
UPB_INLINE bool _upb_Message_HasExtensionField(
const upb_Message* msg, const upb_MiniTableExtension* ext) {
UPB_ASSERT(upb_MiniTableField_HasPresence(&ext->field));
return _upb_Message_Getext(msg, ext) != NULL;
}
UPB_INLINE bool _upb_Message_HasNonExtensionField(
const upb_Message* msg, const upb_MiniTableField* field) {
UPB_ASSERT(upb_MiniTableField_HasPresence(field));
UPB_ASSUME(!upb_MiniTableField_IsExtension(field));
if (_upb_MiniTableField_InOneOf(field)) {
return _upb_getoneofcase_field(msg, field) == field->number;
} else {
return _upb_hasbit_field(msg, field);
}
}
static UPB_FORCEINLINE void _upb_Message_GetNonExtensionField(
const upb_Message* msg, const upb_MiniTableField* field,
const void* default_val, void* val) {
UPB_ASSUME(!upb_MiniTableField_IsExtension(field));
if ((_upb_MiniTableField_InOneOf(field) ||
_upb_MiniTable_ValueIsNonZero(default_val, field)) &&
!_upb_Message_HasNonExtensionField(msg, field)) {
_upb_MiniTable_CopyFieldData(val, default_val, field);
return;
}
_upb_MiniTable_CopyFieldData(val, _upb_MiniTableField_GetConstPtr(msg, field),
field);
}
UPB_INLINE void _upb_Message_GetExtensionField(
const upb_Message* msg, const upb_MiniTableExtension* mt_ext,
const void* default_val, void* val) {
UPB_ASSUME(upb_MiniTableField_IsExtension(&mt_ext->field));
const upb_Message_Extension* ext = _upb_Message_Getext(msg, mt_ext);
if (ext) {
_upb_MiniTable_CopyFieldData(val, &ext->data, &mt_ext->field);
} else {
_upb_MiniTable_CopyFieldData(val, default_val, &mt_ext->field);
}
}
UPB_INLINE void _upb_Message_GetField(const upb_Message* msg,
const upb_MiniTableField* field,
const void* default_val, void* val) {
if (upb_MiniTableField_IsExtension(field)) {
_upb_Message_GetExtensionField(msg, (upb_MiniTableExtension*)field,
default_val, val);
} else {
_upb_Message_GetNonExtensionField(msg, field, default_val, val);
}
}
UPB_INLINE void _upb_Message_SetNonExtensionField(
upb_Message* msg, const upb_MiniTableField* field, const void* val) {
UPB_ASSUME(!upb_MiniTableField_IsExtension(field));
_upb_Message_SetPresence(msg, field);
_upb_MiniTable_CopyFieldData(_upb_MiniTableField_GetPtr(msg, field), val,
field);
}
UPB_INLINE bool _upb_Message_SetExtensionField(
upb_Message* msg, const upb_MiniTableExtension* mt_ext, const void* val,
upb_Arena* a) {
UPB_ASSERT(a);
upb_Message_Extension* ext =
_upb_Message_GetOrCreateExtension(msg, mt_ext, a);
if (!ext) return false;
_upb_MiniTable_CopyFieldData(&ext->data, val, &mt_ext->field);
return true;
}
UPB_INLINE bool _upb_Message_SetField(upb_Message* msg,
const upb_MiniTableField* field,
const void* val, upb_Arena* a) {
if (upb_MiniTableField_IsExtension(field)) {
const upb_MiniTableExtension* ext = (const upb_MiniTableExtension*)field;
return _upb_Message_SetExtensionField(msg, ext, val, a);
} else {
_upb_Message_SetNonExtensionField(msg, field, val);
return true;
}
}
UPB_INLINE void _upb_Message_ClearExtensionField(
upb_Message* msg, const upb_MiniTableExtension* ext_l) {
upb_Message_Internal* in = upb_Message_Getinternal(msg);
if (!in->internal) return;
const upb_Message_Extension* base =
UPB_PTR_AT(in->internal, in->internal->ext_begin, upb_Message_Extension);
upb_Message_Extension* ext =
(upb_Message_Extension*)_upb_Message_Getext(msg, ext_l);
if (ext) {
*ext = *base;
in->internal->ext_begin += sizeof(upb_Message_Extension);
}
}
UPB_INLINE void _upb_Message_ClearNonExtensionField(
upb_Message* msg, const upb_MiniTableField* field) {
if (field->presence > 0) {
_upb_clearhas_field(msg, field);
} else if (_upb_MiniTableField_InOneOf(field)) {
uint32_t* oneof_case = _upb_oneofcase_field(msg, field);
if (*oneof_case != field->number) return;
*oneof_case = 0;
}
const char zeros[16] = {0};
_upb_MiniTable_CopyFieldData(_upb_MiniTableField_GetPtr(msg, field), zeros,
field);
}
// EVERYTHING ABOVE THIS LINE IS INTERNAL - DO NOT USE /////////////////////////
UPB_API_INLINE void upb_Message_ClearField(upb_Message* msg,
const upb_MiniTableField* field) {
if (upb_MiniTableField_IsExtension(field)) {
const upb_MiniTableExtension* ext = (const upb_MiniTableExtension*)field;
_upb_Message_ClearExtensionField(msg, ext);
} else {
_upb_Message_ClearNonExtensionField(msg, field);
}
}
UPB_API_INLINE bool upb_Message_HasField(const upb_Message* msg,
const upb_MiniTableField* field) {
if (upb_MiniTableField_IsExtension(field)) {
const upb_MiniTableExtension* ext = (const upb_MiniTableExtension*)field;
return _upb_Message_HasExtensionField(msg, ext);
} else {
return _upb_Message_HasNonExtensionField(msg, field);
}
}
UPB_API_INLINE bool upb_Message_GetBool(const upb_Message* msg,
const upb_MiniTableField* field,
bool default_val) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_Bool);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_1Byte);
bool ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetBool(upb_Message* msg,
const upb_MiniTableField* field,
bool value, upb_Arena* a) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_Bool);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_1Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE int32_t upb_Message_GetInt32(const upb_Message* msg,
const upb_MiniTableField* field,
int32_t default_val) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_Int32 ||
field->descriptortype == kUpb_FieldType_SInt32 ||
field->descriptortype == kUpb_FieldType_SFixed32 ||
field->descriptortype == kUpb_FieldType_Enum);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
int32_t ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetInt32(upb_Message* msg,
const upb_MiniTableField* field,
int32_t value, upb_Arena* a) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_Int32 ||
field->descriptortype == kUpb_FieldType_SInt32 ||
field->descriptortype == kUpb_FieldType_SFixed32);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE uint32_t upb_Message_GetUInt32(const upb_Message* msg,
const upb_MiniTableField* field,
uint32_t default_val) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_UInt32 ||
field->descriptortype == kUpb_FieldType_Fixed32);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
uint32_t ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetUInt32(upb_Message* msg,
const upb_MiniTableField* field,
uint32_t value, upb_Arena* a) {
UPB_ASSUME(field->descriptortype == kUpb_FieldType_UInt32 ||
field->descriptortype == kUpb_FieldType_Fixed32);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE void upb_MiniTable_SetEnumProto2(
upb_Message* msg, const upb_MiniTable* msg_mini_table,
const upb_MiniTableField* field, int32_t value) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Enum);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
UPB_ASSERT(upb_MiniTableEnum_CheckValue(
upb_MiniTable_GetSubEnumTable(msg_mini_table, field), value));
_upb_Message_SetNonExtensionField(msg, field, &value);
}
UPB_API_INLINE int64_t upb_Message_GetInt64(const upb_Message* msg,
const upb_MiniTableField* field,
uint64_t default_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Int64 ||
field->descriptortype == kUpb_FieldType_SInt64 ||
field->descriptortype == kUpb_FieldType_SFixed64);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
int64_t ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetInt64(upb_Message* msg,
const upb_MiniTableField* field,
int64_t value, upb_Arena* a) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Int64 ||
field->descriptortype == kUpb_FieldType_SInt64 ||
field->descriptortype == kUpb_FieldType_SFixed64);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE uint64_t upb_Message_GetUInt64(const upb_Message* msg,
const upb_MiniTableField* field,
uint64_t default_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_UInt64 ||
field->descriptortype == kUpb_FieldType_Fixed64);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
uint64_t ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetUInt64(upb_Message* msg,
const upb_MiniTableField* field,
uint64_t value, upb_Arena* a) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_UInt64 ||
field->descriptortype == kUpb_FieldType_Fixed64);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE float upb_Message_GetFloat(const upb_Message* msg,
const upb_MiniTableField* field,
float default_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Float);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
float ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetFloat(upb_Message* msg,
const upb_MiniTableField* field,
float value, upb_Arena* a) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Float);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_4Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE double upb_Message_GetDouble(const upb_Message* msg,
const upb_MiniTableField* field,
double default_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Double);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
double ret;
_upb_Message_GetField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetDouble(upb_Message* msg,
const upb_MiniTableField* field,
double value, upb_Arena* a) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Double);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_8Byte);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE upb_StringView
upb_Message_GetString(const upb_Message* msg, const upb_MiniTableField* field,
upb_StringView def_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Bytes ||
field->descriptortype == kUpb_FieldType_String);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_StringView);
upb_StringView ret;
_upb_Message_GetField(msg, field, &def_val, &ret);
return ret;
}
UPB_API_INLINE bool upb_Message_SetString(upb_Message* msg,
const upb_MiniTableField* field,
upb_StringView value, upb_Arena* a) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Bytes ||
field->descriptortype == kUpb_FieldType_String);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) == kUpb_FieldRep_StringView);
return _upb_Message_SetField(msg, field, &value, a);
}
UPB_API_INLINE const upb_Message* upb_MiniTable_GetMessage(
const upb_Message* msg, const upb_MiniTableField* field,
upb_Message* default_val) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Message ||
field->descriptortype == kUpb_FieldType_Group);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) ==
UPB_SIZE(kUpb_FieldRep_4Byte, kUpb_FieldRep_8Byte));
upb_Message* ret;
_upb_Message_GetNonExtensionField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE void upb_MiniTable_SetMessage(upb_Message* msg,
const upb_MiniTable* mini_table,
const upb_MiniTableField* field,
upb_Message* sub_message) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Message ||
field->descriptortype == kUpb_FieldType_Group);
UPB_ASSUME(!upb_IsRepeatedOrMap(field));
UPB_ASSUME(_upb_MiniTableField_GetRep(field) ==
UPB_SIZE(kUpb_FieldRep_4Byte, kUpb_FieldRep_8Byte));
UPB_ASSERT(mini_table->subs[field->submsg_index].submsg);
_upb_Message_SetNonExtensionField(msg, field, &sub_message);
}
UPB_API_INLINE upb_Message* upb_MiniTable_GetMutableMessage(
upb_Message* msg, const upb_MiniTable* mini_table,
const upb_MiniTableField* field, upb_Arena* arena) {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Message ||
field->descriptortype == kUpb_FieldType_Group);
upb_Message* sub_message = *UPB_PTR_AT(msg, field->offset, upb_Message*);
if (!sub_message) {
const upb_MiniTable* sub_mini_table =
mini_table->subs[field->submsg_index].submsg;
UPB_ASSERT(sub_mini_table);
sub_message = _upb_Message_New(sub_mini_table, arena);
*UPB_PTR_AT(msg, field->offset, upb_Message*) = sub_message;
_upb_Message_SetPresence(msg, field);
}
return sub_message;
}
UPB_API_INLINE const upb_Array* upb_MiniTable_GetArray(
const upb_Message* msg, const upb_MiniTableField* field) {
const upb_Array* ret;
const upb_Array* default_val = NULL;
_upb_Message_GetNonExtensionField(msg, field, &default_val, &ret);
return ret;
}
UPB_API_INLINE upb_Array* upb_MiniTable_GetMutableArray(
upb_Message* msg, const upb_MiniTableField* field) {
return (upb_Array*)upb_MiniTable_GetArray(msg, field);
}
void* upb_MiniTable_ResizeArray(upb_Message* msg,
const upb_MiniTableField* field, size_t len,
upb_Arena* arena);
UPB_API_INLINE bool upb_MiniTableField_IsClosedEnum(
const upb_MiniTableField* field) {
return field->descriptortype == kUpb_FieldType_Enum;
}
typedef enum {
kUpb_GetExtension_Ok,
kUpb_GetExtension_NotPresent,
kUpb_GetExtension_ParseError,
kUpb_GetExtension_OutOfMemory,
} upb_GetExtension_Status;
typedef enum {
kUpb_GetExtensionAsBytes_Ok,
kUpb_GetExtensionAsBytes_NotPresent,
kUpb_GetExtensionAsBytes_EncodeError,
} upb_GetExtensionAsBytes_Status;
// Returns a message extension or promotes an unknown field to
// an extension.
//
// TODO(ferhat): Only supports extension fields that are messages,
// expand support to include non-message types.
upb_GetExtension_Status upb_MiniTable_GetOrPromoteExtension(
upb_Message* msg, const upb_MiniTableExtension* ext_table,
int decode_options, upb_Arena* arena,
const upb_Message_Extension** extension);
// Returns a message extension or unknown field matching the extension
// data as bytes.
//
// If an extension has already been decoded it will be re-encoded
// to bytes.
upb_GetExtensionAsBytes_Status upb_MiniTable_GetExtensionAsBytes(
const upb_Message* msg, const upb_MiniTableExtension* ext_table,
int encode_options, upb_Arena* arena, const char** extension_data,
size_t* len);
typedef enum {
kUpb_FindUnknown_Ok,
kUpb_FindUnknown_NotPresent,
kUpb_FindUnknown_ParseError,
} upb_FindUnknown_Status;
typedef struct {
upb_FindUnknown_Status status;
// Start of unknown field data in message arena.
const char* ptr;
// Size of unknown field data.
size_t len;
} upb_FindUnknownRet;
// Finds first occurrence of unknown data by tag id in message.
upb_FindUnknownRet upb_MiniTable_FindUnknown(const upb_Message* msg,
uint32_t field_number);
typedef enum {
kUpb_UnknownToMessage_Ok,
kUpb_UnknownToMessage_ParseError,
kUpb_UnknownToMessage_OutOfMemory,
kUpb_UnknownToMessage_NotFound,
} upb_UnknownToMessage_Status;
typedef struct {
upb_UnknownToMessage_Status status;
upb_Message* message;
} upb_UnknownToMessageRet;
// Promotes unknown data inside message to a upb_Message parsing the unknown.
//
// The unknown data is removed from message after field value is set
// using upb_MiniTable_SetMessage.
upb_UnknownToMessageRet upb_MiniTable_PromoteUnknownToMessage(
upb_Message* msg, const upb_MiniTable* mini_table,
const upb_MiniTableField* field, const upb_MiniTable* sub_mini_table,
int decode_options, upb_Arena* arena);
// Promotes all unknown data that matches field tag id to repeated messages
// in upb_Array.
//
// The unknown data is removed from message after upb_Array is populated.
// Since repeated messages can't be packed we remove each unknown that
// contains the target tag id.
upb_UnknownToMessage_Status upb_MiniTable_PromoteUnknownToMessageArray(
upb_Message* msg, const upb_MiniTableField* field,
const upb_MiniTable* mini_table, int decode_options, upb_Arena* arena);
#ifdef __cplusplus
} /* extern "C" */
#endif
#include "upb/port/undef.inc"
#endif // UPB_MESSAGE_ACCESSORS_H_