Protocol Buffers - Google's data interchange format (grpc依赖) https://developers.google.com/protocol-buffers/
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/*
* Copyright (c) 2009-2021, Google LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Google LLC nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UPB_COLLECTIONS_ARRAY_H_
#define UPB_COLLECTIONS_ARRAY_H_
#include "upb/base/descriptor_constants.h"
#include "upb/collections/message_value.h"
#include "upb/mem/arena.h"
// Must be last.
#include "upb/port/def.inc"
#ifdef __cplusplus
extern "C" {
#endif
/* Creates a new array on the given arena that holds elements of this type. */
upb_Array* upb_Array_New(upb_Arena* a, upb_CType type);
/* Returns the number of elements in the array. */
size_t upb_Array_Size(const upb_Array* arr);
/* Returns the given element, which must be within the array's current size. */
upb_MessageValue upb_Array_Get(const upb_Array* arr, size_t i);
/* Sets the given element, which must be within the array's current size. */
void upb_Array_Set(upb_Array* arr, size_t i, upb_MessageValue val);
/* Appends an element to the array. Returns false on allocation failure. */
bool upb_Array_Append(upb_Array* array, upb_MessageValue val, upb_Arena* arena);
/* Moves elements within the array using memmove(). Like memmove(), the source
* and destination elements may be overlapping. */
void upb_Array_Move(upb_Array* array, size_t dst_idx, size_t src_idx,
size_t count);
/* Inserts one or more empty elements into the array. Existing elements are
* shifted right. The new elements have undefined state and must be set with
* `upb_Array_Set()`.
* REQUIRES: `i <= upb_Array_Size(arr)` */
bool upb_Array_Insert(upb_Array* array, size_t i, size_t count,
upb_Arena* arena);
/* Deletes one or more elements from the array. Existing elements are shifted
* left.
* REQUIRES: `i + count <= upb_Array_Size(arr)` */
void upb_Array_Delete(upb_Array* array, size_t i, size_t count);
/* Changes the size of a vector. New elements are initialized to empty/0.
* Returns false on allocation failure. */
bool upb_Array_Resize(upb_Array* array, size_t size, upb_Arena* arena);
#ifdef __cplusplus
} /* extern "C" */
#endif
#include "upb/port/undef.inc"
#endif /* UPB_COLLECTIONS_ARRAY_H_ */