/// <summary>
/// async stream not supported at current version ,
/// when new version released ,do a change
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public async Task <IEnumerable <T> > ReadToEndAsync <T>()
{
string line;
var type = typeof(T);
var ls = new List <T>();
while (true)
{
line = await _reader.ReadLineAsync();
if (line == null)
{
break;
}
line = line.Trim();
var records = line.Splite(",");
var resolveItems = createResolveItems(type);
var instance = _reflection.GetItem(type)
.Constructors.GetDefaultConstructor()
?.DefaultInvoker
?.Invoke();
if (instance == null)
{
throw new DefaultConstructorNotFoundException(type);
}
foreach (var item in resolveItems)
{
if (item.Column > records.Count)
{
throw new ArgumentOutOfRangeException();
}
if (!item.Property.CanWrite)
{
throw new Exception();
}
item.Property.Setter.Invoke(instance,
JasmineStringValueConvertor.FromString(records[item.Column], item.Property.PropertyType));
}
ls.Add((T)instance);
}
return(ls);
}
public IEnumerable <T> Read <T>(int count)
{
string line;
var type = typeof(T);
var t = 0;
while (++t < count)
{
line = _reader.ReadLine()?.Trim();
if (line == null)
{
break;
}
var records = line.Splite(",");
var resolveItems = createResolveItems(type);
var instance = _reflection.GetItem(type)
.Constructors.GetDefaultConstructor()
?.DefaultInvoker
?.Invoke();
if (instance == null)
{
throw new DefaultConstructorNotFoundException(type);
}
foreach (var item in resolveItems)
{
if (item.Column > records.Count)
{
throw new ArgumentOutOfRangeException();
}
if (!item.Property.CanWrite)
{
throw new Exception();
}
item.Property.SetValue(instance,
JasmineStringValueConvertor.FromString(records[item.Column], item.Property.PropertyType));
}
yield return((T)instance);
}
}
public dynamic ReadOne(Type type)
{
string line;
do
{
line = _reader.ReadLine()?.Trim();
} while (line != string.Empty);
if (line == null)
{
return(null);
}
var records = line.Splite(",");
var resolveItems = createResolveItems(type);
var instance = _reflection.GetItem(type)
.Constructors
.GetDefaultConstructor()
?.DefaultInvoker
?.Invoke();
if (instance == null)
{
throw new DefaultConstructorNotFoundException(type);
}
foreach (var item in resolveItems)
{
if (item.Column > records.Count - 1)
{
throw new ArgumentOutOfRangeException();
}
if (!item.Property.CanWrite)
{
throw new Exception();
}
item.Property.SetValue(instance,
JasmineStringValueConvertor.FromString(records[item.Column], item.Property.PropertyType));
}
return(instance);
}
public static object Convert(Type type, string source)
{
return(type.IsBaseType() ? JasmineStringValueConvertor.FromString(source, type) :
Newtonsoft.Json.JsonConvert.DeserializeObject(source, type));
}