Protocol Buffers - Google's data interchange format (grpc依赖)
https://developers.google.com/protocol-buffers/
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89 lines
3.3 KiB
89 lines
3.3 KiB
// Protocol Buffers - Google's data interchange format |
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// Copyright 2023 Google LLC. All rights reserved. |
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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_REFLECTION_MESSAGE_H_ |
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#define UPB_REFLECTION_MESSAGE_H_ |
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#include <stddef.h> |
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#include "upb/mem/arena.h" |
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#include "upb/message/map.h" |
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#include "upb/message/message.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_API 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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UPB_API 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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UPB_API void upb_Message_ClearFieldByDef(upb_Message* msg, |
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const upb_FieldDef* f); |
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// May only be called for fields where upb_FieldDef_HasPresence(f) == true. |
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UPB_API bool upb_Message_HasFieldByDef(const upb_Message* msg, |
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const upb_FieldDef* f); |
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// Returns the value in the message associated with this field def. |
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UPB_API 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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UPB_API 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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UPB_API bool upb_Message_Next(const upb_Message* msg, const upb_MessageDef* m, |
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const upb_DefPool* ext_pool, |
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const upb_FieldDef** f, upb_MessageValue* val, |
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size_t* iter); |
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// Clears all unknown field data from this message and all submessages. |
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UPB_API bool upb_Message_DiscardUnknown(upb_Message* msg, |
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const upb_MessageDef* m, 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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