internal static T Split <T>(string json, EscapeOp op)
{
List <T> t = SplitList <T>(json, 0, op);
if (t.Count > 0)
{
return(t[0]);
}
return(default(T));
}
internal static List <T> SplitList <T>(string json, int topN, EscapeOp op)
{
List <T> result = new List <T>();
if (!string.IsNullOrEmpty(json))
{
Type t = typeof(T);
// object entity = Activator.CreateInstance(t);
T entity = Activator.CreateInstance <T>();
bool hasSetValue = false;
List <PropertyInfo> pInfoList = ReflectTool.GetPropertyList(t);
List <FieldInfo> fInfoList = ReflectTool.GetFieldList(t);
//string key = string.Empty;
StringBuilder key = new StringBuilder(32);
StringBuilder value = new StringBuilder();
CharState cs = new CharState(false);
try
{
#region 核心逻辑
char c;
for (int i = 0; i < json.Length; i++)
{
c = json[i];
if (!cs.IsKeyword(c)) //设置关键符号状态。
{
if (cs.jsonStart) //Json进行中。。。
{
if (cs.keyStart > 0)
{
key.Append(c);
}
else if (cs.valueStart > 0)
{
value.Append(c);
}
}
else if (!cs.arrayStart)//json结束，又不是数组，则退出。
{
break;
}
}
else if (cs.childrenStart)//正常字符，值状态下。
{
int temp;
int length = GetValueLength(false, json, i, false, out temp);//优化后，速度快了10倍
value.Length = 0;
value.Append(json.Substring(i, length));
cs.childrenStart = false;
cs.valueStart = 0;
cs.setDicValue = true;
i = i + length - 1;
}
if (cs.setDicValue)//设置键值对。
{
if (key.Length > 0)
{
string k = key.ToString();
string val = value.ToString();//.TrimEnd('\r', '\n', '\t');
bool isNull = json[i - 5] == ':' && json[i] != '"' && val.Length == 4 && val == "null";
if (isNull)
{
val = "";
}
else
{
val = JsonHelper.UnEscape(val, op);
}
object o = val;
foreach (PropertyInfo p in pInfoList)
{
if (String.Compare(p.Name, k, StringComparison.OrdinalIgnoreCase) == 0)
{
if (p.CanWrite)
{
if (p.PropertyType.Name != "String")
{
o = ConvertTool.ChangeType(val, p.PropertyType);
}
p.SetValue(entity, o, null);
hasSetValue = true;
}
break;
}
}
if (!hasSetValue && fInfoList.Count > 0)
{
foreach (FieldInfo f in fInfoList)
{
if (String.Compare(f.Name, k, StringComparison.OrdinalIgnoreCase) == 0)
{
if (f.FieldType.Name != "String")
{
o = ConvertTool.ChangeType(val, f.FieldType);
}
f.SetValue(entity, o);
hasSetValue = true;
break;
}
}
}
}
cs.setDicValue = false;
key.Length = 0;
value.Length = 0;
}
if (!cs.jsonStart && hasSetValue)
{
result.Add(entity);
if (topN > 0 && result.Count >= topN)
{
return(result);
}
if (cs.arrayStart)//处理数组。
{
entity = Activator.CreateInstance <T>();
hasSetValue = false;
}
}
}
#endregion
}
catch (Exception err)
{
Log.Write(err, LogType.Error);
}
finally
{
key = null;
value = null;
}
}
return(result);
}
