public static void SetValue(string attrName, object rawObject, object value)
{
var asPyObj = rawObject as PyObject;
if (asPyObj != null)
{
asPyObj.__setattr__(attrName, value);
}
else
{
try
{
// If it's not a type, then get its type. If it's a type, we have the reflection information already.
// This became an issue when we had to resolve stuff being imported from assemblies.
var objType = rawObject as Type;
if (objType == null)
{
objType = rawObject.GetType();
}
// Try it as a field and then as a property.
var member = objType.GetMember(attrName);
if (member.Length == 0)
{
// We have a catch for ArgumentException but it also looks like GetMember will just return an empty list if the attribute is not found.
throw new EscapedPyException(new AttributeError("'" + objType.Name + "' object has no attribute named '" + attrName + "'"));
}
if (member[0].MemberType == System.Reflection.MemberTypes.Property)
{
var property = objType.GetProperty(attrName);
property.SetValue(rawObject, PyNetConverter.Convert(value, property.PropertyType));
}
else if (member[0].MemberType == System.Reflection.MemberTypes.Field)
{
var field = objType.GetField(attrName);
field.SetValue(rawObject, PyNetConverter.Convert(value, field.FieldType));
}
else if (member[0].MemberType == System.Reflection.MemberTypes.Method)
{
throw new EscapedPyException(new AttributeError("'" + objType.Name + "' is a .NET object and its methods cannot be reassigned"));
}
else if (member[0].MemberType == System.Reflection.MemberTypes.Event)
{
throw new EscapedPyException(new AttributeError("'" + objType.Name + "' is a .NET object and its events cannot be reassigned"));
}
else
{
throw new EscapedPyException(new NotImplemented("'" + objType.Name + "' object attribute named '" + attrName + "' is neither a field, method, event, nor property."));
}
}
catch (ArgumentException e)
{
throw new EscapedPyException(new AttributeError(e.Message));
}
}
}
public static PyString str_builtin(object o)
{
if (PyNetConverter.CanConvert(o.GetType(), typeof(PyString)))
{
return((PyString)PyNetConverter.Convert(o, typeof(PyString)));
}
else
{
throw new InvalidCastException("Cannot convert " + o.GetType() + " to a string.");
}
}
private static void StoreSubscriptArray(Array asArray, int arrayIndex, object rawValue)
{
var value = rawValue;
var arrayType = asArray.GetType().GetElementType();
value = PyNetConverter.Convert(value, arrayType);
if (arrayIndex < 0)
{
// Allow negative indexing, which only works for one wrap around the array.
arrayIndex = asArray.Length - arrayIndex;
}
if (arrayIndex < 0 || arrayIndex >= asArray.Length)
{
throw new Exception("IndexError: list index out of range");
}
asArray.SetValue(value, arrayIndex);
}
private static void StoreSubscriptIList(IList container, object index, object value)
{
int intIndex = GetIntIndex(index);
var listType = container.GetType();
var assignValue = value;
if (listType.IsGenericType)
{
if (PyNetConverter.CanConvert(value.GetType(), listType.GenericTypeArguments[0]))
{
assignValue = PyNetConverter.Convert(value, listType.GenericTypeArguments[0]);
}
else
{
throw new Exception("Cannot subscript store type " + value.GetType().Name + " to generic list with type " + listType.GenericTypeArguments[0]);
}
}
container[intIndex] = assignValue;
}
private static void StoreSubscriptIDict(IDictionary container, object index, object rawValue)
{
var key = index;
var value = rawValue;
var dictType = container.GetType();
if (dictType.IsGenericType)
{
var keyType = dictType.GenericTypeArguments[0];
var valueType = dictType.GenericTypeArguments[1];
if (PyNetConverter.CanConvert(key.GetType(), keyType))
{
key = PyNetConverter.Convert(key, keyType);
}
else
{
throw new Exception("Cannot subscript store with key " + key.GetType().Name + " to generic dictionary with key type " + keyType);
}
if (PyNetConverter.CanConvert(value.GetType(), valueType))
{
value = PyNetConverter.Convert(value, valueType);
}
else
{
throw new Exception("Cannot subscript store with value " + value.GetType().Name + " to generic dictionary with value type " + valueType);
}
}
try
{
container[key] = value;
}
catch (KeyNotFoundException)
{
throw new Exception("KeyError: " + index);
}
}