Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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78 lines
2.5 KiB
78 lines
2.5 KiB
1 year ago
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// Protocol Buffers - Google's data interchange format
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// Copyright 2023 Google LLC. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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///
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#ifndef UPB_MESSAGE_INTERNAL_SIZE_LOG2_H_
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#define UPB_MESSAGE_INTERNAL_SIZE_LOG2_H_
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#include <stddef.h>
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#include <stdint.h>
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#include "upb/base/descriptor_constants.h"
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// Must be last.
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#include "upb/port/def.inc"
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#ifdef __cplusplus
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extern "C" {
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#endif
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// Return the log2 of the storage size in bytes for a upb_CType
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UPB_INLINE int upb_SizeLog2_CType(upb_CType c_type) {
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static const int8_t size[] = {
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0, // kUpb_CType_Bool
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2, // kUpb_CType_Float
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2, // kUpb_CType_Int32
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2, // kUpb_CType_UInt32
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2, // kUpb_CType_Enum
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UPB_SIZE(2, 3), // kUpb_CType_Message
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3, // kUpb_CType_Double
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3, // kUpb_CType_Int64
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3, // kUpb_CType_UInt64
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UPB_SIZE(3, 4), // kUpb_CType_String
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UPB_SIZE(3, 4), // kUpb_CType_Bytes
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};
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// -1 here because the enum is one-based but the table is zero-based.
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return size[c_type - 1];
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}
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// Return the log2 of the storage size in bytes for a upb_FieldType
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UPB_INLINE int upb_SizeLog2_FieldType(upb_FieldType field_type) {
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static const int8_t size[] = {
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3, // kUpb_FieldType_Double
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2, // kUpb_FieldType_Float
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3, // kUpb_FieldType_Int64
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3, // kUpb_FieldType_UInt64
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2, // kUpb_FieldType_Int32
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3, // kUpb_FieldType_Fixed64
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2, // kUpb_FieldType_Fixed32
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0, // kUpb_FieldType_Bool
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UPB_SIZE(3, 4), // kUpb_FieldType_String
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UPB_SIZE(2, 3), // kUpb_FieldType_Group
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UPB_SIZE(2, 3), // kUpb_FieldType_Message
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UPB_SIZE(3, 4), // kUpb_FieldType_Bytes
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2, // kUpb_FieldType_UInt32
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2, // kUpb_FieldType_Enum
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2, // kUpb_FieldType_SFixed32
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3, // kUpb_FieldType_SFixed64
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2, // kUpb_FieldType_SInt32
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3, // kUpb_FieldType_SInt64
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};
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// -1 here because the enum is one-based but the table is zero-based.
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return size[field_type - 1];
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}
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#include "upb/port/undef.inc"
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#endif /* UPB_MESSAGE_INTERNAL_SIZE_LOG2_H_ */
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