public ParseException(string msg, Reader reader)
: base(msg)
{
this.JsonString = reader.JsonString;
this.CharAt = reader.At;
this.LineAt = reader.LineAt;
this.ColumnAt = reader.ColumnAt;
}
public JToken Parse(string jsonString, int at = 0)
{
var reader = new Reader(jsonString, at);
JArray targetArr = null;
JToken result = null;
JObject targetObj = null;
var stack = new Stack<JToken>();
reader.OnObjectStart = (name,colAt,lineAt) =>
{
if (result == null)
{
result = targetObj = new JObject();
}
else
{
var newTarget = new JObject();
if (targetObj != null)
{
targetObj[name] = newTarget;
stack.Push(targetObj);
}
else if (targetArr != null && name == null)
{
targetArr.Push(newTarget);
stack.Push(targetArr);
}
targetObj = newTarget;
targetArr = null;
}
};
reader.OnArrayStart = (name) =>
{
if (result == null)
{
result = targetArr = new JArray();
}
else
{
var newTarget = new JArray();
if (targetObj != null)
{
targetObj[name] = newTarget;
stack.Push(targetObj);
}
else if (targetArr != null && name == null)
{
targetArr.Push(newTarget);
stack.Push(targetArr);
}
targetArr = newTarget;
targetObj = null;
}
};
reader.OnObjectEnd = () =>
{
if (targetObj != result && targetArr != result)
{
var target = stack.Pop();
if ((targetArr = target as JArray) == null)
{
if ((targetObj = target as JObject) == null)
{
throw new ParseException("不期望的}", reader.JsonString, reader.At, reader.LineAt,
reader.ColumnAt);
}
}
else targetObj = null;
}
return true;
};
reader.OnArrayEnd = () =>
{
if (targetObj != result && targetArr != result)
{
var target = stack.Pop();
if ((targetArr = target as JArray) == null)
{
if ((targetObj = target as JObject) == null)
{
throw new ParseException("不期望的]", reader.JsonString, reader.At, reader.LineAt,
reader.ColumnAt);
}
}
else targetObj = null;
}
return true;
};
reader.OnFunctionFound = (name, value) =>
{
if (targetObj != null) targetObj[name] = new JFunction(value);
else if (targetArr != null) targetArr.Push(new JFunction(value));
else if (name == null) result = new JFunction(value);
else
{
result = targetObj = new JObject();
targetObj[name] = new JFunction(value);
}
return true;
};
reader.OnKeyValueFound = (name, valueString) => {
JToken value = ParseValueString(valueString);
if (targetObj != null) targetObj[name] = value;
else if (targetArr != null) targetArr.Push(value);
else if (name == null) result = value;
else
{
result = targetObj = new JObject();
targetObj[name] = value;
}
return true;
};
reader.Read();
return result;
}
