Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
72 lines
2.4 KiB
72 lines
2.4 KiB
// Protocol Buffers - Google's data interchange format |
|
// Copyright 2023 Google LLC. All rights reserved. |
|
// |
|
// Use of this source code is governed by a BSD-style |
|
// license that can be found in the LICENSE file or at |
|
// https://developers.google.com/open-source/licenses/bsd |
|
|
|
#include "upb/message/message.h" |
|
|
|
#include "upb/message/internal/message.h" |
|
#include "upb/message/internal/types.h" |
|
|
|
// Must be last. |
|
#include "upb/port/def.inc" |
|
|
|
static const size_t message_overhead = sizeof(upb_Message_InternalData); |
|
|
|
upb_Message* upb_Message_New(const upb_MiniTable* mini_table, |
|
upb_Arena* arena) { |
|
return _upb_Message_New(mini_table, arena); |
|
} |
|
|
|
bool _upb_Message_AddUnknown(upb_Message* msg, const char* data, size_t len, |
|
upb_Arena* arena) { |
|
if (!UPB_PRIVATE(_upb_Message_Realloc)(msg, len, arena)) return false; |
|
upb_Message_Internal* in = upb_Message_Getinternal(msg); |
|
memcpy(UPB_PTR_AT(in->internal, in->internal->unknown_end, char), data, len); |
|
in->internal->unknown_end += len; |
|
return true; |
|
} |
|
|
|
void _upb_Message_DiscardUnknown_shallow(upb_Message* msg) { |
|
upb_Message_Internal* in = upb_Message_Getinternal(msg); |
|
if (in->internal) { |
|
in->internal->unknown_end = message_overhead; |
|
} |
|
} |
|
|
|
const char* upb_Message_GetUnknown(const upb_Message* msg, size_t* len) { |
|
const upb_Message_Internal* in = upb_Message_Getinternal(msg); |
|
if (in->internal) { |
|
*len = in->internal->unknown_end - message_overhead; |
|
return (char*)(in->internal + 1); |
|
} else { |
|
*len = 0; |
|
return NULL; |
|
} |
|
} |
|
|
|
void upb_Message_DeleteUnknown(upb_Message* msg, const char* data, size_t len) { |
|
upb_Message_Internal* in = upb_Message_Getinternal(msg); |
|
const char* internal_unknown_end = |
|
UPB_PTR_AT(in->internal, in->internal->unknown_end, char); |
|
#ifndef NDEBUG |
|
size_t full_unknown_size; |
|
const char* full_unknown = upb_Message_GetUnknown(msg, &full_unknown_size); |
|
UPB_ASSERT((uintptr_t)data >= (uintptr_t)full_unknown); |
|
UPB_ASSERT((uintptr_t)data < (uintptr_t)(full_unknown + full_unknown_size)); |
|
UPB_ASSERT((uintptr_t)(data + len) > (uintptr_t)data); |
|
UPB_ASSERT((uintptr_t)(data + len) <= (uintptr_t)internal_unknown_end); |
|
#endif |
|
if ((data + len) != internal_unknown_end) { |
|
memmove((char*)data, data + len, internal_unknown_end - data - len); |
|
} |
|
in->internal->unknown_end -= len; |
|
} |
|
|
|
size_t upb_Message_ExtensionCount(const upb_Message* msg) { |
|
size_t count; |
|
_upb_Message_Getexts(msg, &count); |
|
return count; |
|
}
|
|
|