private static string ScalerJson(ScalerRecord record, int indent, bool ignoreFirstIndent)
{
StringBuilder builder = new StringBuilder(capacity: 64);
if (ignoreFirstIndent == false)
{
builder.AppendIndent(indent);
}
switch (record.ScalerType)
{
case ScalerType.Null:
builder.Append("null");
break;
case ScalerType.String:
builder.AppendFormat("\"{0}\"", record.Value);
break;
case ScalerType.Decimal:
case ScalerType.Double:
builder.Append(record.Value.ToString());
break;
case ScalerType.Boolean:
builder.Append(record.Value.ToString().ToLower());
break;
default:
throw new NotImplementedException();
}
return(builder.ToString());
}
public void TestFromJson()
{
decimal d = 1234;
long v = (long)d;
Stream file = File.OpenRead("data.json");
RecordBase record = Converter.ReadJson(file);
ScalerRecord scaler = (ScalerRecord)record.RecordFromPath("[5].abc");
long value = scaler.ReadAs <long>();
file.Dispose();
string json = record.Json();
}
private static RecordBase ReadJson(InternalTextReader reader, bool isCalledByList, bool ignoreKeyCase)
{
char peek;
int state = 1;
while (true)
{
if (!reader.HasChar)
{
throw new Exception("unexcepted end of stream");
}
peek = (char)reader.Peek();
if (state == 1)
{
if (peek.IsWhiteSpace())
{
reader.Read();
}
else if (peek == '[')
{
state = 2;
}
else if (peek == '{')
{
state = 3;
}
else if (peek == 't')
{
state = 4;
}
else if (peek == 'f')
{
state = 5;
}
else if (peek == 'n')
{
state = 6;
}
else if (peek == '"')
{
state = 7;
}
else if (peek.IsNumber())
{
state = 8;
}
else if (peek == '-')
{
state = 9; reader.Read();
}
else if (peek == '/')
{
state = 10; reader.Read();
}
else if (peek == ']' && isCalledByList)
{
reader.Read(); return(null);
}
else
{
throw BuildException($"unexcepted char '{peek}'", reader);
}
}
else if (state == 2)
{
return(ReadList(reader, ignoreKeyCase));
}
else if (state == 3)
{
return(ReadSet(reader, ignoreKeyCase));
}
else if (state == 4)
{
ScanStringOrThrow(reader, "true");
ScalerRecord record = new ScalerRecord(true);
return(record);
}
else if (state == 5)
{
ScanStringOrThrow(reader, "false");
ScalerRecord record = new ScalerRecord(false);
return(record);
}
else if (state == 6)
{
ScanStringOrThrow(reader, "null");
ScalerRecord record = new ScalerRecord(null);
return(record);
}
else if (state == 7)
{
ScalerRecord record = new ScalerRecord(ReadStringOrThrow(reader));
return(record);
}
else if (state == 8)
{
ScalerRecord record = new ScalerRecord(ReadNumberOrThrow(reader));
return(record);
}
else if (state == 9)
{
if (peek.IsNumber())
{
object val = ReadNumberOrThrow(reader);
if (val is int intval)
{
val = -intval;
}
else if (val is double doubleval)
{
val = -doubleval;
}
ScalerRecord record = new ScalerRecord(val);
return(record);
}
else
{
throw BuildException($"unexcepted char '{peek}', number expected", reader);
}
}
else if (state == 10)
{
if (peek == '/')
{
state = 11; reader.Read();
}
else
{
throw BuildException($"unexcepted char '{peek}'", reader);
}
}
else if (state == 11)
{
if (peek == '\n')
{
state = 1; reader.Read();
}
else
{
reader.Read();
}
}
else
{
throw new Exception($"unknow state of {state}");
}
}
}
