private static ScannerData ScanNull(string json, int index)
{
return(new ScannerData(JSONObject.CreateNull(), ExpectConstant(json, index, "null")));
}
private static ScannerData ScanNumber(string json, int index)
{
var negative = false;
var fractional = false;
var negativeExponent = false;
if (json[index] == '-')
{
negative = true;
++index;
}
ulong integerPart = 0;
if (json[index] != '0')
{
while (json.Length > index && char.IsNumber(json[index]))
{
integerPart = (integerPart * 10) + (ulong)(json[index] - '0');
++index;
}
}
else
{
++index;
}
ulong fractionalPart = 0;
int fractionalPartLength = 0;
if (json.Length > index && json[index] == '.')
{
fractional = true;
++index;
while (json.Length > index && char.IsNumber(json[index]))
{
fractionalPart = (fractionalPart * 10) + (ulong)(json[index] - '0');
++index;
++fractionalPartLength;
}
}
ulong exponent = 0;
if (json.Length > index && (json[index] == 'e' || json[index] == 'E'))
{
fractional = true;
++index;
if (json[index] == '-')
{
negativeExponent = true;
++index;
}
else if (json[index] == '+')
{
++index;
}
while (json.Length > index && char.IsNumber(json[index]))
{
exponent = (exponent * 10) + (ulong)(json[index] - '0');
++index;
}
}
return(new ScannerData(JSONObject.CreateNumber(negative, fractional, negativeExponent, integerPart, fractionalPart, fractionalPartLength, exponent), index));
}
private static ScannerData ScanFalse(string json, int index)
{
return(new ScannerData(JSONObject.CreateBoolean(false), ExpectConstant(json, index, "false")));
}
public ScannerData(JSONObject result, int index)
{
Result = result;
Index = index;
}
public void WriteJObject(JSONObject obj)
{
switch (obj.Kind) {
case JSONObjectType.Array:
BeginArray();
foreach (var elem in obj.ArrayValue) {
WriteJObject(elem);
}
EndArray();
break;
case JSONObjectType.Boolean:
WriteBool(obj.BooleanValue);
break;
case JSONObjectType.Null:
WriteNull();
break;
case JSONObjectType.Number:
if (obj.IsFractional) {
WriteNumber(obj.DoubleValue);
} else if (obj.IsNegative) {
WriteNumber(obj.LongValue);
} else {
WriteNumber(obj.ULongValue);
}
break;
case JSONObjectType.Object:
BeginObject();
foreach (var pair in obj.ObjectValue) {
WriteKey(pair.Key);
WriteJObject(pair.Value);
}
EndObject();
break;
case JSONObjectType.String:
WriteString(obj.StringValue);
break;
}
}
public static bool EqualNumber(JSONObject o1, JSONObject o2)
{
if (o1.MinFloat != o2.MinFloat ||
o1.MinInteger != o2.MinInteger ||
o1.IsNegative != o2.IsNegative ||
o1.IsFractional != o2.IsFractional)
return false;
if (o1.IsFractional) {
return o1.DoubleValue == o2.DoubleValue;
}
if (o1.IsNegative) {
return o1.LongValue == o2.LongValue;
}
return o1.ULongValue == o2.ULongValue;
}
public ScannerData(JSONObject result, int index)
{
Result = result;
Index = index;
}