upb/message/accessors.c

/*
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 *     * Redistributions of source code must retain the above copyright
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#include "upb/message/accessors.h"

#include "upb/collections/array.h"
#include "upb/collections/array_internal.h"
#include "upb/collections/map.h"
#include "upb/message/message.h"
#include "upb/mini_table/field_internal.h"
#include "upb/wire/common.h"
#include "upb/wire/decode.h"
#include "upb/wire/encode.h"
#include "upb/wire/eps_copy_input_stream.h"
#include "upb/wire/reader.h"

// Must be last.
#include "upb/port/def.inc"

upb_MapInsertStatus upb_Message_InsertMapEntry(upb_Map* map,
                                               const upb_MiniTable* mini_table,
                                               const upb_MiniTableField* field,
                                               upb_Message* map_entry_message,
                                               upb_Arena* arena) {
  const upb_MiniTable* map_entry_mini_table =
      mini_table->subs[field->UPB_PRIVATE(submsg_index)].submsg;
  UPB_ASSERT(map_entry_mini_table);
  UPB_ASSERT(map_entry_mini_table->field_count == 2);
  const upb_MiniTableField* map_entry_key_field =
      &map_entry_mini_table->fields[0];
  const upb_MiniTableField* map_entry_value_field =
      &map_entry_mini_table->fields[1];
  // Map key/value cannot have explicit defaults,
  // hence assuming a zero default is valid.
  upb_MessageValue default_val;
  memset(&default_val, 0, sizeof(upb_MessageValue));
  upb_MessageValue map_entry_key;
  upb_MessageValue map_entry_value;
  _upb_Message_GetField(map_entry_message, map_entry_key_field, &default_val,
                        &map_entry_key);
  _upb_Message_GetField(map_entry_message, map_entry_value_field, &default_val,
                        &map_entry_value);
  return upb_Map_Insert(map, map_entry_key, map_entry_value, arena);
}