Fix JSON parsing of large unsigned 64-bit integers

Foundation/src/Token.cpp

@@ -81,6 +81,12 @@ Int64 Token::asInteger64() const
 {
 	return NumberParser::parse64(_value);
 }
+
+
+UInt64 Token::asUnsignedInteger64() const
+{
+	return NumberParser::parseUnsigned64(_value);
+}
 #endif
 
 
@@ -90,6 +96,12 @@ int Token::asInteger() const
 }
 
 
+unsigned Token::asUnsignedInteger() const
+{
+	return NumberParser::parseUnsigned(_value);
+}
+
+
 double Token::asFloat() const
 {
 	return NumberParser::parseFloat(_value);