content: package com.alibaba.fastjson2.reader;
  
  import com.alibaba.fastjson2.JSONB;
  import com.alibaba.fastjson2.JSONException;
  import com.alibaba.fastjson2.JSONFactory;
  import com.alibaba.fastjson2.JSONReader;
  import com.alibaba.fastjson2.util.Fnv;
  
  import java.lang.reflect.Type;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.function.Function;
  
  public final class ObjectReaderImplInt32ValueArray
          extends ObjectReaderPrimitive {
      static final ObjectReaderImplInt32ValueArray INSTANCE = new ObjectReaderImplInt32ValueArray(int[].class, null);
      public static final long HASH_TYPE = Fnv.hashCode64("[I");
  
      final Function<int[], Object> builder;
  
      ObjectReaderImplInt32ValueArray(Class objectClass, Function<int[], Object> builder) {
          super(objectClass);
          this.builder = builder;
      }
  
      @Override
      public Object readObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
          if (jsonReader.jsonb) {
              return readJSONBObject(jsonReader, fieldType, fieldName, features);
          }
  
          if (jsonReader.readIfNull()) {
              return null;
          }
  
          if (jsonReader.nextIfArrayStart()) {
              int[] values = new int[16];
              int size = 0;
              while (!jsonReader.nextIfArrayEnd()) {
                  if (jsonReader.isEnd()) {
                      throw new JSONException(jsonReader.info("input end"));
                  }
  
                  int minCapacity = size + 1;
                  if (minCapacity - values.length > 0) {
                      int oldCapacity = values.length;
                      int newCapacity = oldCapacity + (oldCapacity >> 1);
                      if (newCapacity - minCapacity < 0) {
                          newCapacity = minCapacity;
                      }
  
                      values = Arrays.copyOf(values, newCapacity);
                  }
  
                  values[size++] = jsonReader.readInt32Value();
              }
              jsonReader.nextIfComma();
  
              int[] array = Arrays.copyOf(values, size);
              if (builder != null) {
                  return builder.apply(array);
              }
              return array;
          }
  
          if (jsonReader.isString()) {
              String str = jsonReader.readString();
              if (str.isEmpty()) {
                  return null;
              }
  
              throw new JSONException(jsonReader.info("not support input " + str));
          }
  
          throw new JSONException(jsonReader.info("TODO"));
      }
  
      @Override
      public Object readJSONBObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
          if (jsonReader.nextIfMatch(JSONB.Constants.BC_TYPED_ANY)) {
              long typeHashCode = jsonReader.readTypeHashCode();
              if (typeHashCode != HASH_TYPE && typeHashCode != ObjectReaderImplInt32Array.HASH_TYPE) {
                  throw new JSONException("not support autoType : " + jsonReader.getString());
              }
          }
  
          int entryCnt = jsonReader.startArray();
          if (entryCnt == -1) {
              return null;
          }
          int[] array = new int[entryCnt];
          for (int i = 0; i < entryCnt; i++) {
              array[i] = jsonReader.readInt32Value();
          }
  
          if (builder != null) {
              return builder.apply(array);
          }
  
          return array;
      }
  
      @Override
      public Object createInstance(Collection collection, long features) {
          int[] array = new int[collection.size()];
          int i = 0;
          for (Object item : collection) {
              int value;
              if (item == null) {
                  value = 0;
              } else if (item instanceof Number) {
                  value = ((Number) item).intValue();
              } else {
                  Function typeConvert = JSONFactory.getDefaultObjectReaderProvider().getTypeConvert(item.getClass(), int.class);
                  if (typeConvert == null) {
                      throw new JSONException("can not cast to int " + item.getClass());
                  }
                  value = (Integer) typeConvert.apply(item);
              }
              array[i++] = value;
          }
          if (builder != null) {
              return builder.apply(array);
          }
          return array;
      }
  }
  