Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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86 lines
3.9 KiB
86 lines
3.9 KiB
3 years ago
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/*
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* Copyright (c) 2009-2021, Google LLC
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Google LLC nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "upb/mini_table_accessors.h"
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#include "upb/mini_table.h"
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#include "upb/msg_internal.h"
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// Must be last.
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#include "upb/port_def.inc"
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size_t upb_MiniTable_Field_GetSize(const upb_MiniTable_Field* f) {
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static unsigned char sizes[] = {
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0, /* 0 */
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8, /* kUpb_FieldType_Double */
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4, /* kUpb_FieldType_Float */
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8, /* kUpb_FieldType_Int64 */
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8, /* kUpb_FieldType_UInt64 */
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4, /* kUpb_FieldType_Int32 */
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8, /* kUpb_FieldType_Fixed64 */
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4, /* kUpb_FieldType_Fixed32 */
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1, /* kUpb_FieldType_Bool */
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sizeof(upb_StringView), /* kUpb_FieldType_String */
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sizeof(void*), /* kUpb_FieldType_Group */
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sizeof(void*), /* kUpb_FieldType_Message */
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sizeof(upb_StringView), /* kUpb_FieldType_Bytes */
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4, /* kUpb_FieldType_UInt32 */
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4, /* kUpb_FieldType_Enum */
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4, /* kUpb_FieldType_SFixed32 */
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8, /* kUpb_FieldType_SFixed64 */
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4, /* kUpb_FieldType_SInt32 */
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8, /* kUpb_FieldType_SInt64 */
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};
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return upb_IsRepeatedOrMap(f) ? sizeof(void*) : sizes[f->descriptortype];
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}
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bool upb_MiniTable_HasField(const upb_Message* msg,
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const upb_MiniTable_Field* field) {
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if (_upb_MiniTable_Field_InOneOf(field)) {
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return _upb_getoneofcase_field(msg, field) == field->number;
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} else if (field->presence > 0) {
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return _upb_hasbit_field(msg, field);
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} else {
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UPB_ASSERT(field->descriptortype == kUpb_FieldType_Message ||
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field->descriptortype == kUpb_FieldType_Group);
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return upb_MiniTable_GetMessage(msg, field) != NULL;
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}
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}
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void upb_MiniTable_ClearField(upb_Message* msg,
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const upb_MiniTable_Field* field) {
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char* mem = UPB_PTR_AT(msg, field->offset, char);
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if (field->presence > 0) {
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_upb_clearhas_field(msg, field);
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} else if (_upb_MiniTable_Field_InOneOf(field)) {
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uint32_t* oneof_case = _upb_oneofcase_field(msg, field);
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if (*oneof_case != field->number) return;
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*oneof_case = 0;
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}
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memset(mem, 0, upb_MiniTable_Field_GetSize(field));
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}
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