private DynamicMetaObject TryPythonConversion(DynamicMetaObjectBinder conversion, Type type)
{
if (!type.IsEnum)
{
switch (type.GetTypeCode())
{
case TypeCode.Object:
if (type == typeof(Complex))
{
return(MakeConvertRuleForCall(conversion, type, this, "__complex__", "ConvertToComplex",
(() => MakeConvertRuleForCall(conversion, type, this, "__float__", "ConvertToFloat",
(() => FallbackConvert(conversion)),
(x) => Ast.Call(null, typeof(PythonOps).GetMethod(nameof(PythonOps.ConvertFloatToComplex)), x))),
(x) => x));
}
else if (type == typeof(BigInteger))
{
return(MakeConvertRuleForCall(conversion, type, this, "__long__", "ConvertToLong"));
}
else if (type == typeof(IEnumerable))
{
return(PythonConversionBinder.ConvertToIEnumerable(conversion, Restrict(Value.GetType())));
}
else if (type == typeof(IEnumerator))
{
return(PythonConversionBinder.ConvertToIEnumerator(conversion, Restrict(Value.GetType())));
}
else if (type.IsSubclassOf(typeof(Delegate)))
{
return(MakeDelegateTarget(conversion, type, Restrict(Value.GetType())));
}
break;
case TypeCode.Int32:
if (!typeof(Extensible <int>).IsAssignableFrom(LimitType))
{
return(MakeConvertRuleForCall(conversion, type, this, "__int__", "ConvertToInt"));
}
break;
case TypeCode.Double:
return(MakeConvertRuleForCall(conversion, type, this, "__float__", "ConvertToFloat"));
case TypeCode.Boolean:
return(PythonProtocol.ConvertToBool(
conversion,
this
));
case TypeCode.String:
if (!typeof(Extensible <string>).IsAssignableFrom(LimitType))
{
return(MakeConvertRuleForCall(conversion, type, this, "__str__", "ConvertToString"));
}
break;
}
}
return(null);
}
private DynamicMetaObject /*!*/ InvokeWorker(DynamicMetaObjectBinder /*!*/ action, Expression /*!*/ codeContext, DynamicMetaObject /*!*/[] args)
{
ValidationInfo typeTest = BindingHelpers.GetValidationInfo(this, Value.PythonType);
if (Value is PythonType)
{
PythonContext context = PythonContext.GetPythonContext(action);
// optimization for meta classes. Don't dispatch to type.__call__ if it's inherited,
// instead produce a normal type call rule.
PythonTypeSlot callSlot, typeCallSlot;
if (Value.PythonType.TryResolveMixedSlot(context.SharedContext, "__call__", out callSlot) &&
TypeCache.PythonType.TryResolveSlot(context.SharedContext, "__call__", out typeCallSlot) &&
callSlot == typeCallSlot)
{
return(InvokeFallback(action, codeContext, args));
}
}
return(BindingHelpers.AddDynamicTestAndDefer(
action,
PythonProtocol.Call(action, this, args) ?? InvokeFallback(action, codeContext, args),
args,
typeTest
));
}
internal DynamicMetaObject /*!*/ InvokeFallback(DynamicMetaObject /*!*/ target, DynamicMetaObject /*!*/[] /*!*/ args, CallSignature sig, DynamicMetaObject errorSuggestion)
{
return
(PythonProtocol.Call(this, target, args) ??
Context.Binder.Create(sig, target, args, AstUtils.Constant(_context.SharedContext)) ??
Context.Binder.Call(sig, errorSuggestion, new PythonOverloadResolverFactory(Context.Binder, AstUtils.Constant(_context.SharedContext)), target, args));
}
private DynamicMetaObject /*!*/ MakeToBoolConversion(DynamicMetaObject /*!*/ self)
{
DynamicMetaObject res;
if (self.HasValue)
{
self = self.Restrict(self.GetRuntimeType());
}
// Optimization: if we already boxed it to a bool, and now
// we're unboxing it, remove the unnecessary box.
if (self.Expression.NodeType == ExpressionType.Convert && self.Expression.Type == typeof(object))
{
var convert = (UnaryExpression)self.Expression;
if (convert.Operand.Type == typeof(bool))
{
return(new DynamicMetaObject(convert.Operand, self.Restrictions));
}
}
if (self.GetLimitType() == typeof(DynamicNull))
{
// None has no __nonzero__ and no __len__ but it's always false
res = MakeNoneToBoolConversion(self);
}
else if (self.GetLimitType() == typeof(bool))
{
// nothing special to convert from bool to bool
res = self;
}
else if (typeof(IStrongBox).IsAssignableFrom(self.GetLimitType()))
{
// Explictly block conversion of References to bool
res = MakeStrongBoxToBoolConversionError(self);
}
else if (self.GetLimitType().IsPrimitive || self.GetLimitType().IsEnum)
{
// optimization - rather than doing a method call for primitives and enums generate
// the comparison to zero directly.
res = MakePrimitiveToBoolComparison(self);
}
else
{
// anything non-null that doesn't fall under one of the above rules is true. So we
// fallback to the base Python conversion which will check for __nonzero__ and
// __len__. The fallback is handled by our ConvertTo site binder.
return
(PythonProtocol.ConvertToBool(this, self) ??
new DynamicMetaObject(
AstUtils.Constant(true),
self.Restrictions
));
}
return(res);
}
DynamicMetaObject IPythonOperable.BindOperation(PythonOperationBinder action, DynamicMetaObject[] args)
{
switch (action.Operation)
{
case PythonOperationKind.CallSignatures:
return(PythonProtocol.MakeCallSignatureOperation(this, Value.Template.Targets));
}
return(null);
}
DynamicMetaObject IPythonOperable.BindOperation(PythonOperationBinder action, DynamicMetaObject[] args) {
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "BuiltinFunc Operation " + action.Operation);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, "BuiltinFunc Operation");
switch (action.Operation) {
case PythonOperationKind.CallSignatures:
return PythonProtocol.MakeCallSignatureOperation(this, Value.Targets);
}
return null;
}
/// <summary>
/// Fallback - performs the default binding operation if the object isn't recognized
/// as being invokable.
/// </summary>
internal DynamicMetaObject /*!*/ Fallback(Expression codeContext, DynamicMetaObject target, DynamicMetaObject /*!*/[] /*!*/ args)
{
if (target.NeedsDeferral())
{
return(Defer(args));
}
return(PythonProtocol.Call(this, target, args) ??
Context.Binder.Create(Signature, target, args, codeContext) ??
Context.Binder.Call(Signature, new PythonOverloadResolverFactory(Context.Binder, codeContext), target, args));
}
public override DynamicMetaObject FallbackGetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject errorSuggestion)
{
#if !SILVERLIGHT
DynamicMetaObject com;
if (Microsoft.Scripting.ComInterop.ComBinder.TryBindGetIndex(this, target, BindingHelpers.GetComArguments(indexes), out com))
{
return(com);
}
#endif
return(PythonProtocol.Index(this, PythonIndexType.GetItem, ArrayUtils.Insert(target, indexes), errorSuggestion));
}
public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
if (target is IPythonOperable op)
{
DynamicMetaObject res = op.BindOperation(this, ArrayUtils.Insert(target, args));
if (res != null)
{
return(res);
}
}
return(PythonProtocol.Operation(this, ArrayUtils.Insert(target, args)));
}
public override DynamicMetaObject FallbackSetIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject value, DynamicMetaObject errorSuggestion)
{
#if FEATURE_COM
DynamicMetaObject com;
if (Microsoft.Scripting.ComInterop.ComBinder.TryBindSetIndex(this, target, BindingHelpers.GetComArguments(indexes), BindingHelpers.GetComArgument(value), out com))
{
return(com);
}
#endif
DynamicMetaObject[] finalArgs = new DynamicMetaObject[indexes.Length + 2];
finalArgs[0] = target;
for (int i = 0; i < indexes.Length; i++)
{
finalArgs[i + 1] = indexes[i];
}
finalArgs[finalArgs.Length - 1] = value;
return(PythonProtocol.Index(this, PythonIndexType.SetItem, finalArgs, errorSuggestion));
}
public override DynamicMetaObject /*!*/ BindSetIndex(SetIndexBinder /*!*/ binder, DynamicMetaObject /*!*/[] /*!*/ indexes, DynamicMetaObject /*!*/ value)
{
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "OldClass SetIndex" + indexes.Length);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, "OldClass SetIndex");
return(PythonProtocol.Index(binder, PythonIndexType.SetItem, ArrayUtils.Insert(this, ArrayUtils.Append(indexes, value))));
}
public override DynamicMetaObject /*!*/ BindUnaryOperation(UnaryOperationBinder /*!*/ binder)
{
return(PythonProtocol.Operation(binder, this, null));
}
public override DynamicMetaObject /*!*/ BindDeleteIndex(DeleteIndexBinder /*!*/ binder, DynamicMetaObject /*!*/[] /*!*/ indexes)
{
return(PythonProtocol.Index(binder, PythonIndexType.DeleteItem, ArrayUtils.Insert(this, indexes)));
}
public override DynamicMetaObject /*!*/ BindSetIndex(SetIndexBinder /*!*/ binder, DynamicMetaObject /*!*/[] /*!*/ indexes, DynamicMetaObject /*!*/ value)
{
return(PythonProtocol.Index(binder, PythonIndexType.SetItem, ArrayUtils.Insert(this, ArrayUtils.Append(indexes, value))));
}
public override DynamicMetaObject FallbackDeleteIndex(DynamicMetaObject target, DynamicMetaObject[] indexes, DynamicMetaObject errorSuggestion)
{
return(PythonProtocol.Index(this, PythonIndexType.DeleteItem, ArrayUtils.Insert(target, indexes), errorSuggestion));
}
public override DynamicMetaObject Bind(DynamicMetaObject target, DynamicMetaObject[] args)
{
return(PythonProtocol.Index(this, PythonIndexType.DeleteSlice, ArrayUtils.Insert(target, args)));
}
public override DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
{
return(PythonProtocol.Operation(this, target, arg, errorSuggestion));
}
public override DynamicMetaObject /*!*/ BindUnaryOperation(UnaryOperationBinder /*!*/ binder)
{
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "OldClass UnaryOperation" + binder.Operation);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, "OldClass UnaryOperation");
return(PythonProtocol.Operation(binder, this, null));
}
public override DynamicMetaObject /*!*/ BindDeleteIndex(DeleteIndexBinder /*!*/ binder, DynamicMetaObject /*!*/[] /*!*/ indexes)
{
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "OldClass DeleteIndex" + indexes.Length);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, "OldClass DeleteIndex");
return(PythonProtocol.Index(binder, PythonIndexType.DeleteItem, ArrayUtils.Insert(this, indexes)));
}