public static DynamicMetaObject/*!*/ Operation(UnaryOperationBinder/*!*/ operation, DynamicMetaObject arg, DynamicMetaObject errorSuggestion) {
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "Fallback UnaryOperator " + " " + operation.Operation + " " + arg.LimitType.FullName);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, operation.Operation.ToString());
DynamicMetaObject[] args = new[] { arg };
if (arg.NeedsDeferral()) {
return operation.Defer(arg);
}
ValidationInfo valInfo = BindingHelpers.GetValidationInfo(args);
DynamicMetaObject res = null;
Type retType = typeof(object);
switch (operation.Operation) {
case ExpressionType.UnaryPlus:
res = BindingHelpers.AddPythonBoxing(MakeUnaryOperation(operation, arg, "__pos__", errorSuggestion));
break;
case ExpressionType.Negate:
res = BindingHelpers.AddPythonBoxing(MakeUnaryOperation(operation, arg, "__neg__", errorSuggestion));
break;
case ExpressionType.OnesComplement:
res = BindingHelpers.AddPythonBoxing(MakeUnaryOperation(operation, arg, "__invert__", errorSuggestion));
break;
case ExpressionType.Not:
res = MakeUnaryNotOperation(operation, arg, typeof(object), errorSuggestion);
break;
case ExpressionType.IsFalse:
res = MakeUnaryNotOperation(operation, arg, typeof(bool), errorSuggestion);
retType = typeof(bool);
break;
case ExpressionType.IsTrue:
res = PythonProtocol.ConvertToBool(operation, arg);
retType = typeof(bool);
break;
default:
res = TypeError(operation, "unknown operation: " + operation.ToString(), args);
break;
}
return BindingHelpers.AddDynamicTestAndDefer(operation, res, args, valInfo, retType);
}
public static DynamicMetaObject Operation(UnaryOperationBinder operation, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
{
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "Fallback UnaryOperator " + " " + operation.Operation + " " + arg.LimitType.FullName);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, operation.Operation.ToString());
DynamicMetaObject[] args = new[] { arg };
if (arg.NeedsDeferral())
return operation.Defer(arg);
ValidationInfo valInfo = BindingHelpers.GetValidationInfo(args);
TotemOperationKind? toOperator = null;
Type retType = typeof(object);
bool box = true;
bool inverse = false;
switch (operation.Operation)
{
case ExpressionType.UnaryPlus: toOperator = TotemOperationKind.Positive; break;
case ExpressionType.Negate: toOperator = TotemOperationKind.Negate; break;
case ExpressionType.OnesComplement: toOperator = TotemOperationKind.OnesComplement; break;
case ExpressionType.Not: toOperator = TotemOperationKind.Not; box = false; break;
case ExpressionType.IsFalse: toOperator = TotemOperationKind.IsFalse; box = false; retType = typeof(bool); break;
case ExpressionType.IsTrue: toOperator = TotemOperationKind.IsFalse; box = false; retType = typeof(bool); inverse = true; break;
}
DynamicMetaObject res = null;
if (toOperator != null)
res = MakeUnaryOperation(operation, args[0], toOperator.Value, errorSuggestion, retType);
else
res = operation.FallbackUnaryOperation(arg);
if (inverse)
{
res = new DynamicMetaObject(
Expression.Condition(
res.Expression,
Utils.Constant(ScriptingRuntimeHelpers.False),
Utils.Constant(ScriptingRuntimeHelpers.True)
),
res.Restrictions
);
}
if (box)
{
res = BindingHelpers.AddTotemBoxing(res);
}
return BindingHelpers.AddDynamicTestAndDefer(operation, res, args, valInfo, retType);
}