Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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77 lines
2.5 KiB
77 lines
2.5 KiB
// 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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