public static string __format__(CodeContext /*!*/ context, object self, [NotNull] string /*!*/ formatSpec)
{
string text = PythonOps.ToString(context, self);
StringFormatSpec spec = StringFormatSpec.FromString(formatSpec);
if (spec.Type != null && spec.Type != 's')
{
throw PythonOps.ValueError("Unknown format code '{0}' for object of type 'str'", spec.Type.Value.ToString());
}
else if (spec.Sign != null)
{
throw PythonOps.ValueError("Sign not allowed in string format specifier");
}
else if (spec.Alignment == '=')
{
throw PythonOps.ValueError("'=' alignment not allowed in string format specifier");
}
// apply precision to shorten the string first
if (spec.Precision != null)
{
int precision = spec.Precision.Value;
if (text.Length > precision)
{
text = text.Substring(0, precision);
}
}
// then apply the minimum width & padding
text = spec.AlignText(text);
// finally return the text
return(text);
}
public static string __format__(CodeContext /*!*/ context, object self, [NotNull] string /*!*/ formatSpec)
{
if (formatSpec != string.Empty)
{
throw PythonOps.TypeError("unsupported format string passed to {0}.__format__", PythonTypeOps.GetName(self));
}
return(PythonOps.ToString(context, self));
}
// support for EnumType(number)
private static T CreateEnum <T>(object value)
{
if (value == null)
{
throw PythonOps.ValueError(
$"None is not a valid {PythonOps.ToString(typeof(T))}"
);
}
try {
return((T)Enum.ToObject(typeof(T), value));
} catch (ArgumentException) {
throw PythonOps.ValueError(
$"{PythonOps.ToString(value)} is not a valid {PythonOps.ToString(typeof(T))}"
);
}
}
