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Allow deserialization of very large integers #874

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8 changes: 8 additions & 0 deletions RestSharp.Tests/JsonTests.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -825,6 +825,14 @@ public void Can_Deserialize_Dictionary_with_Null()
Assert.IsNull(dictionary["Null"]);
}

[Test]
public void Can_Deserialize_Very_Large_Integers()
{
decimal veryLargeInteger = long.MaxValue + 1M;
decimal deserializedValue = new JsonDeserializer().Deserialize<decimal>(new RestResponse { Content = veryLargeInteger.ToString() });
Assert.AreEqual(veryLargeInteger, deserializedValue);
}

private static string CreateJsonWithUnderscores()
{
JsonObject doc = new JsonObject();
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24 changes: 17 additions & 7 deletions RestSharp/SimpleJson.cs
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Expand Up @@ -903,19 +903,29 @@ static object ParseNumber(char[] json, ref int index, ref bool success)
EatWhitespace(json, ref index);
int lastIndex = GetLastIndexOfNumber(json, index);
int charLength = (lastIndex - index) + 1;
object returnNumber;
string str = new string(json, index, charLength);
if (str.IndexOf(".", StringComparison.OrdinalIgnoreCase) != -1 || str.IndexOf("e", StringComparison.OrdinalIgnoreCase) != -1)
object returnNumber = null;
string numberAsString = new string(json, index, charLength);
if ((numberAsString.IndexOf(".", StringComparison.OrdinalIgnoreCase) != -1)
|| (numberAsString.IndexOf("e", StringComparison.OrdinalIgnoreCase) != -1))
{
double number;
success = double.TryParse(new string(json, index, charLength), NumberStyles.Any, CultureInfo.InvariantCulture, out number);
success = double.TryParse(numberAsString, NumberStyles.Any, CultureInfo.InvariantCulture, out number);
returnNumber = number;
}
else
{
long number;
success = long.TryParse(new string(json, index, charLength), NumberStyles.Any, CultureInfo.InvariantCulture, out number);
returnNumber = number;
long longNumber;
decimal decimalNumber;
double doubleNumber;

if (long.TryParse(numberAsString, NumberStyles.Any, CultureInfo.InvariantCulture, out longNumber))
returnNumber = longNumber;
else if (decimal.TryParse(numberAsString, NumberStyles.Any, CultureInfo.InvariantCulture, out decimalNumber))
returnNumber = decimalNumber;
else if (double.TryParse(numberAsString, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleNumber))
returnNumber = doubleNumber;

success = (returnNumber != null);
}
index = lastIndex + 1;
return returnNumber;
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