Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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102 lines
4.3 KiB
102 lines
4.3 KiB
/* |
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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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#ifndef UPB_REFLECTION_MESSAGE_H_ |
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#define UPB_REFLECTION_MESSAGE_H_ |
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#include "upb/collections/map.h" |
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#include "upb/reflection/common.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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// Returns a mutable pointer to a map, array, or submessage value. If the given |
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// arena is non-NULL this will construct a new object if it was not previously |
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// present. May not be called for primitive fields. |
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upb_MutableMessageValue upb_Message_Mutable(upb_Message* msg, |
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const upb_FieldDef* f, |
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upb_Arena* a); |
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// Returns the field that is set in the oneof, or NULL if none are set. |
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const upb_FieldDef* upb_Message_WhichOneof(const upb_Message* msg, |
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const upb_OneofDef* o); |
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// Clear all data and unknown fields. |
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void upb_Message_ClearByDef(upb_Message* msg, const upb_MessageDef* m); |
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// Clears any field presence and sets the value back to its default. |
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void upb_Message_ClearFieldByDef(upb_Message* msg, const upb_FieldDef* f); |
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// May only be called for fields where upb_FieldDef_HasPresence(f) == true. |
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bool upb_Message_HasFieldByDef(const upb_Message* msg, const upb_FieldDef* f); |
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// Returns the value in the message associated with this field def. |
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upb_MessageValue upb_Message_GetFieldByDef(const upb_Message* msg, |
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const upb_FieldDef* f); |
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// Sets the given field to the given value. For a msg/array/map/string, the |
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// caller must ensure that the target data outlives |msg| (by living either in |
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// the same arena or a different arena that outlives it). |
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// |
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// Returns false if allocation fails. |
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bool upb_Message_SetFieldByDef(upb_Message* msg, const upb_FieldDef* f, |
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upb_MessageValue val, upb_Arena* a); |
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// Iterate over present fields. |
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// |
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// size_t iter = kUpb_Message_Begin; |
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// const upb_FieldDef *f; |
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// upb_MessageValue val; |
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// while (upb_Message_Next(msg, m, ext_pool, &f, &val, &iter)) { |
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// process_field(f, val); |
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// } |
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// |
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// If ext_pool is NULL, no extensions will be returned. If the given symtab |
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// returns extensions that don't match what is in this message, those extensions |
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// will be skipped. |
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#define kUpb_Message_Begin -1 |
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bool upb_Message_Next(const upb_Message* msg, const upb_MessageDef* m, |
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const upb_DefPool* ext_pool, const upb_FieldDef** f, |
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upb_MessageValue* val, size_t* iter); |
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// Clears all unknown field data from this message and all submessages. |
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bool upb_Message_DiscardUnknown(upb_Message* msg, const upb_MessageDef* m, |
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int maxdepth); |
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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_REFLECTION_MESSAGE_H_ */
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