public JsonConverter(Type type)
{
Type = type ?? throw new ArgumentNullException(nameof(type));
Type interfaceType = Type.GetInterface(typeof(IJsonConverter <object, object>).Name);
if (interfaceType is null)
{
throw new JsonException($"{type}需要实现{typeof (IJsonConverter<object, object>)}接口");
}
Type[] types = interfaceType.GetGenericArguments();
BeforeType = types[0];
AfterType = types[1];
ReadMethod = interfaceType.GetMethod(nameof(IJsonConverter <object, object> .Read), new Type[] { BeforeType });
WriteMethod = interfaceType.GetMethod(nameof(IJsonConverter <object, object> .Write), new Type[] { AfterType });
Instance = JsonApi.CreateInstance(Type);
}
public object BuildArray(Type type, object instance = null)
{
if (type is null)
{
throw new ArgumentNullException(nameof(type));
}
if (!JsonApi.TryGetArrayType(type, out JsonArrayType arrayType))
{
throw new JsonNotSupportException(type);
}
switch (arrayType)
{
default:
throw new JsonNotSupportException(arrayType);
case JsonArrayType.Array: {
JsonArray jsonArray = new JsonValueBuilder(Reader, Config).BuildArray();
List <int> bounds = new List <int> ();
MeasureArray(jsonArray, ref bounds);
if (bounds.Count != type.GetArrayRank())
{
throw new JsonException("数组维数不匹配");
}
Type elementType = type.GetElementType();
Array array = null;
bool create = false;
if (instance?.GetType() != type)
{
create = true;
}
else
{
array = (Array)instance;
for (int i = 0; i < array.Rank; i++)
{
if (array.GetLength(i) != bounds[i])
{
create = true;
break;
}
}
}
if (create)
{
if (bounds.Count == 1)
{
array = Array.CreateInstance(elementType, bounds[0]);
}
else
{
array = Array.CreateInstance(elementType, bounds.ToArray());
}
}
if (array.Rank == 1)
{
for (int i = 0; i < jsonArray.Count; i++)
{
JsonDeserializer deserializer = new JsonDeserializer(new JsonValueReader(jsonArray[i], Config), Config);
array.SetValue(deserializer.BuildValue(elementType, array.GetValue(i)), i);
}
return(array);
}
int[] indices = new int[bounds.Count];
int dimension = 0;
void ForEachArray(JsonArray currentArray)
{
int length = bounds[dimension];
for (int i = 0; i < length; i++)
{
indices[dimension] = i;
if (dimension == indices.Length - 1)
{
JsonDeserializer deserializer = new JsonDeserializer(new JsonValueReader(currentArray[i], Config), Config);
array.SetValue(deserializer.BuildValue(elementType, array.GetValue(indices)), indices);
continue;
}
dimension++;
ForEachArray(currentArray[i]);
}
dimension--;
}
ForEachArray(jsonArray);
return(array);
}
case JsonArrayType.GenericList:
case JsonArrayType.GenericIList:
case JsonArrayType.GenericObservableCollection: {
Type elementType = type.GetGenericArguments()[0];
if (instance?.GetType() != type)
{
if (type.IsInterface)
{
switch (arrayType)
{
default:
throw new JsonNotSupportException(arrayType);
case JsonArrayType.GenericIList:
instance = JsonApi.CreateInstance(typeof(List <>).MakeGenericType(elementType));
break;
}
}
else
{
instance = JsonApi.CreateInstance(type);
}
}
IList list = (IList)instance;
int oldCount = list.Count;
int newCount = 0;
Reader.ReadArray(i => {
newCount = i + 1;
if (i < oldCount)
{
list[i] = BuildValue(elementType, list[i]);
return;
}
list.Add(BuildValue(elementType));
});
while (list.Count > newCount)
{
list.RemoveAt(list.Count - 1);
}
return(list);
}
case JsonArrayType.DataTable: {
if (instance?.GetType() != type)
{
instance = JsonApi.CreateInstance(type);
}
DataTable dataTable = (DataTable)instance;
int columnNumber = dataTable.Columns.Count;
int columnIndex;
ArrayList arrayList = null;
object[] values = null;
Reader.ReadArray(i => {
bool hasRow = dataTable.Rows.Count > i;
if (!hasRow)
{
if (i == 0)
{
arrayList = new ArrayList();
}
else if (values is null)
{
values = new object[columnNumber];
}
}
columnIndex = 0;
Reader.ReadObject(columnName => {
if (!hasRow && i == 0)
{
columnNumber++;
dataTable.Columns.Add(columnName);
}
return(true);
}, () => {
object value = BuildValue();
if (hasRow)
{
dataTable.Rows[i].ItemArray[columnIndex] = value;
return;
}
if (i == 0)
{
arrayList.Add(value);
return;
}
values[columnIndex] = value;
columnIndex++;
});
if (!hasRow)
{
dataTable.Rows.Add(i == 0 ? arrayList.ToArray() : values);
}
});
return(dataTable);
}
}
}
public object BuildObject(Type type, object instance = null)
{
if (type is null)
{
throw new ArgumentNullException(nameof(type));
}
if (!JsonApi.TryGetObjectType(type, out JsonObjectType objectType))
{
throw new JsonNotSupportException(type);
}
if (instance?.GetType() != type)
{
instance = JsonApi.CreateInstance(type);
}
switch (objectType)
{
default:
throw new JsonNotSupportException(objectType);
case JsonObjectType.Class: {
MemberInfo memberInfo = null;
FieldInfo fieldInfo = null;
PropertyInfo propertyInfo = null;
JsonField field = null;
Reader.ReadObject(name => {
foreach (MemberInfo current in JsonApi.GetMembers(type))
{
if (JsonApi.CanSerializeMember(current, out fieldInfo, out propertyInfo, out field))
{
if (JsonApi.Equals(name, field?.Name ?? current.Name, Config))
{
memberInfo = current;
return(true);
}
}
}
return(false);
}, () => {
object value;
switch (memberInfo.MemberType)
{
default:
throw new JsonNotSupportException(memberInfo.MemberType);
case MemberTypes.Field:
value = ConverterRead(fieldInfo.FieldType, fieldInfo.GetValue(instance), field);
break;
case MemberTypes.Property:
value = ConverterRead(propertyInfo.PropertyType, propertyInfo.GetValue(instance, null), field);
break;
}
if (!JsonApi.CanSerializeValue(value, Config))
{
return;
}
switch (memberInfo.MemberType)
{
default:
throw new JsonNotSupportException(memberInfo.MemberType);
case MemberTypes.Field:
fieldInfo.SetValue(instance, value);
break;
case MemberTypes.Property:
propertyInfo.SetValue(instance, value, null);
break;
}
});
return(instance);
}
case JsonObjectType.DataSet: {
DataSet dataSet = (DataSet)instance;
string tableName = null;
Reader.ReadObject(name => {
tableName = name;
return(true);
}, () => {
DataTable dataTable = dataSet.Tables[tableName];
bool hasTable = dataTable != null;
dataTable = BuildArray <DataTable> (dataTable);
if (!hasTable)
{
dataSet.Tables.Add(dataTable);
}
dataTable.TableName = JsonApi.Naming(tableName, Config.NamingType);
});
return(instance);
}
case JsonObjectType.GenericDictionary:
case JsonObjectType.GenericSortedDictionary:
case JsonObjectType.GenericSortedList: {
Type keyType = type.GetGenericArguments()[0];
Type valueType = type.GetGenericArguments()[1];
IDictionary dictionary = (IDictionary)instance;
dictionary.Clear();
object key = null;
Reader.ReadObject(name => {
key = JsonApi.ChangeType(JsonApi.Naming(name, Config.NamingType), keyType, Config);
return(true);
}, () => {
dictionary[key] = BuildValue(valueType);
});
return(instance);
}
case JsonObjectType.GenericKeyValuePair: {
Type keyType = type.GetGenericArguments()[0];
Type valueType = type.GetGenericArguments()[1];
Reader.ReadObject(name => {
type.GetRuntimeField("key").SetValue(instance, JsonApi.ChangeType(JsonApi.Naming(name, Config.NamingType), keyType, Config));
return(true);
}, () => {
FieldInfo fieldInfo = type.GetRuntimeField("value");
fieldInfo.SetValue(instance, BuildValue(valueType, fieldInfo.GetValue(instance)));
});
return(instance);
}
}
}
