public static string ToStringReturnHelper(object o)
{
if (o is string && o != null)
{
return((string)o);
}
throw PythonOps.TypeError("__str__ returned non-string type ({0})", PythonOps.GetPythonTypeName(o));
}
public static void SetPropertyHelper(object prop, object instance, object newValue, string name)
{
if (!(prop is PythonTypeSlot desc))
{
throw PythonOps.TypeError("Expected settable property for {0}, but found {1}",
name.ToString(), PythonOps.GetPythonTypeName(prop));
}
desc.TrySetValue(DefaultContext.Default, instance, DynamicHelpers.GetPythonType(instance), newValue);
}
public static object GetPropertyHelper(object prop, object instance, string name)
{
if (!(prop is PythonTypeSlot desc))
{
throw PythonOps.TypeError("Expected property for {0}, but found {1}",
name.ToString(), PythonOps.GetPythonTypeName(prop));
}
object value;
desc.TryGetValue(DefaultContext.Default, instance, DynamicHelpers.GetPythonType(instance), out value);
return(value);
}
internal static IList <byte> CoerceBytes(object?obj)
{
if (obj is IList <byte> ret)
{
return(ret);
}
if (obj is IBufferProtocol bp)
{
using (IPythonBuffer buf = bp.GetBuffer()) {
return(buf.AsReadOnlySpan().ToArray());
}
}
throw PythonOps.TypeError("a bytes-like object is required, not '{0}'", PythonOps.GetPythonTypeName(obj));
}
public static void AddRemoveEventHelper(object method, IPythonObject instance, object eventValue, string name)
{
object callable = method;
// TODO: dt gives us a PythonContext which we should use
PythonType dt = instance.PythonType;
if (method is PythonTypeSlot dts)
{
if (!dts.TryGetValue(DefaultContext.Default, instance, dt, out callable))
{
throw PythonOps.AttributeErrorForMissingAttribute(dt.Name, name);
}
}
if (!PythonOps.IsCallable(DefaultContext.Default, callable))
{
throw PythonOps.TypeError("Expected callable value for {0}, but found {1}", name.ToString(),
PythonOps.GetPythonTypeName(method));
}
PythonCalls.Call(callable, eventValue);
}
internal static void AppendJoin(object value, int index, List <byte> byteList)
{
IList <byte> bytesValue;
string strValue;
if ((bytesValue = value as IList <byte>) != null)
{
byteList.AddRange(bytesValue);
}
else if ((strValue = value as string) != null)
{
byteList.AddRange(strValue.MakeByteArray());
}
else
{
throw PythonOps.TypeError("sequence item {0}: expected bytes or byte array, {1} found", index.ToString(), PythonOps.GetPythonTypeName(value));
}
}
internal static void AppendJoin(object?value, int index, List <byte> byteList)
{
if (value is IList <byte> bytesValue)
{
byteList.AddRange(bytesValue);
}
else if (value is IBufferProtocol bp)
{
using (IPythonBuffer buf = bp.GetBuffer()) {
byteList.AddRange(buf.AsReadOnlySpan().ToArray());
}
}
else
{
throw PythonOps.TypeError("sequence item {0}: expected bytes or byte array, {1} found", index.ToString(), PythonOps.GetPythonTypeName(value));
}
}
private static object FastNew(CodeContext /*!*/ context, object?o, int @base = 10)
{
object?result;
switch (o)
{
case int _:
return(o);
case BigInteger val:
return(val.IsInt32() ? (int)val : o);
case double d:
return(DoubleOps.__int__(d));
case bool b:
return(BoolOps.__int__(b));
case Extensible <BigInteger> ebi:
return(TryInvokeInt(context, o, out result) ? result : ebi.Value.IsInt32() ? (object)(int)ebi.Value : ebi.Value);
case float f:
return(DoubleOps.__int__(f));
case sbyte val:
return((int)val);
case byte val:
return((int)val);
case short val:
return((int)val);
case ushort val:
return((int)val);
case long val:
return(int.MinValue <= val && val <= int.MaxValue ? (object)(int)val : (BigInteger)val);
case uint val:
return(val <= int.MaxValue ? (object)(int)val : (BigInteger)val);
case ulong val:
return(val <= int.MaxValue ? (object)(int)val : (BigInteger)val);
case decimal val:
return(int.MinValue <= val && val <= int.MaxValue ? (object)(int)val : (BigInteger)val);
case Enum e:
var ic = (IConvertible)e;
switch (ic.GetTypeCode())
{
case TypeCode.Byte:
case TypeCode.SByte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
return(ic.ToInt32(null));
case TypeCode.Int64:
return((BigInteger)ic.ToInt64(null));
case TypeCode.UInt32:
case TypeCode.UInt64:
return((BigInteger)ic.ToUInt64(null));
default:
throw new InvalidOperationException(); // unreachable
}
case string s:
return(LiteralParser.ParseIntegerSign(s, @base, FindStart(s, @base)));
case Extensible <string> es:
return(TryInvokeInt(context, o, out result) ? result : LiteralParser.ParseIntegerSign(es.Value, @base, FindStart(es.Value, @base)));
default:
break;
}
if (TryInvokeInt(context, o, out result))
{
return(result);
}
else if (PythonTypeOps.TryInvokeUnaryOperator(context, o, "__trunc__", out result))
{
switch (result)
{
case int _:
return(result);
case BigInteger bi:
return(bi.IsInt32() ? (object)(int)bi : result);
case bool b:
return(BoolOps.__int__(b)); // Python 3.6: return the int value
case Extensible <BigInteger> ebi:
return(ebi.Value.IsInt32() ? (object)(int)ebi.Value : ebi.Value); // Python 3.6: return the int value
default: {
if (TryInvokeInt(context, result, out var intResult))
{
return(intResult);
}
throw PythonOps.TypeError("__trunc__ returned non-Integral (type {0})", PythonOps.GetPythonTypeName(result));
}
}
}
throw PythonOps.TypeError("int() argument must be a string, a bytes-like object or a number, not '{0}'", PythonOps.GetPythonTypeName(o));
static void Warn(CodeContext context, object result)
{
PythonOps.Warn(context, PythonExceptions.DeprecationWarning, $"__int__ returned non-int (type {PythonOps.GetPythonTypeName(result)}). The ability to return an instance of a strict subclass of int is deprecated, and may be removed in a future version of Python.");
}
static bool TryInvokeInt(CodeContext context, object?o, [NotNullWhen(true)] out object?result)
{
if (PythonTypeOps.TryInvokeUnaryOperator(context, o, "__int__", out result))
{
switch (result)
{
case int _:
return(true);
case BigInteger bi:
if (bi.IsInt32())
{
result = (int)bi;
}
return(true);
case bool b:
Warn(context, result);
result = BoolOps.__int__(b); // Python 3.6: return the int value
return(true);
case Extensible <BigInteger> ebi:
Warn(context, result);
result = ebi.Value.IsInt32() ? (object)(int)ebi.Value : ebi.Value; // Python 3.6: return the int value
return(true);
default:
throw PythonOps.TypeError("__int__ returned non-int (type {0})", PythonOps.GetPythonTypeName(result));
}
public static string __format__(CodeContext /*!*/ context, object self, [NotNone] string /*!*/ formatSpec)
{
if (formatSpec != string.Empty)
{
throw PythonOps.TypeError("unsupported format string passed to {0}.__format__", PythonOps.GetPythonTypeName(self));
}
return(PythonOps.ToString(context, self));
}
public static string __repr__(object self)
{
return($"<{PythonOps.GetPythonTypeName(self)} object at {PythonOps.HexId(self)}>");
}
internal static void AppendJoin(object value, int index, List <byte> byteList)
{
if (value is IList <byte> bytesValue)
{
byteList.AddRange(bytesValue);
}
else
{
throw PythonOps.TypeError("sequence item {0}: expected bytes or byte array, {1} found", index.ToString(), PythonOps.GetPythonTypeName(value));
}
}
static bool TryInvokeFloat(CodeContext context, object /*?*/ o, out double result)
{
if (PythonTypeOps.TryInvokeUnaryOperator(context, o, "__float__", out object retobj))
{
switch (retobj)
{
case double d:
result = d;
return(true);
case Extensible <double> ed:
Warn(context, retobj);
result = ed.Value; // Python 3.6: return the int value
return(true);
default:
throw PythonOps.TypeError("__float__ returned non-float (type {0})", PythonOps.GetPythonTypeName(retobj));
}
public static string SimpleRepr(object self)
{
return(String.Format("<{0} object at {1}>",
PythonOps.GetPythonTypeName(self),
PythonOps.HexId(self)));
}