THUAI6/CAPI/cpp/grpc/include/upb/array.h

/*
 * 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
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 *     * Redistributions in binary form must reproduce the above copyright
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 *       derived from this software without specific prior written permission.
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 */

#ifndef UPB_ARRAY_H_
#define UPB_ARRAY_H_

#include "google/protobuf/descriptor.upb.h"
#include "upb/message_value.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 size of 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_ARRAY_H_ */