public override DynamicMetaObject BindConvert(ConvertBinder/*!*/ conversion) {
PerfTrack.NoteEvent(PerfTrack.Categories.Binding, "BuiltinFunc Convert " + conversion.Type);
PerfTrack.NoteEvent(PerfTrack.Categories.BindingTarget, "BuiltinFunc Convert");
if (conversion.Type.IsSubclassOf(typeof(Delegate))) {
return MakeDelegateTarget(conversion, conversion.Type, Restrict(typeof(BuiltinFunction)));
}
return conversion.FallbackConvert(this);
}
public override DynamicMetaObject/*!*/ BindConvert(ConvertBinder/*!*/ conversion) {
if (conversion.Type.IsSubclassOf(typeof(Delegate))) {
return MakeDelegateTarget(conversion, conversion.Type, Restrict(typeof(PythonFunction)));
}
return conversion.FallbackConvert(this);
}
public override DynamicMetaObject BindConvert(ConvertBinder binder)
{
return(IsOverridden(nameof(DynamicProxy <T> .TryConvert))
? CallMethodWithResult(nameof(DynamicProxy <T> .TryConvert), binder, NoArgs, e => binder.FallbackConvert(this, e))
: base.BindConvert(binder));
}
public override DynamicMetaObject BindConvert(ConvertBinder binder)
{
return(IsOverridden("TryConvert")
? CallMethodWithResult("TryConvert", binder, NoArgs, e => binder.FallbackConvert(this, e))
: base.BindConvert(binder));
}
/// <summary>
/// Performs the binding of the dynamic conversion operation.
/// </summary>
/// <param name="binder">An instance of the <see cref="ConvertBinder"/> that represents the details of the dynamic operation.</param>
/// <returns>The new <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public virtual DynamicMetaObject BindConvert(ConvertBinder binder) {
ContractUtils.RequiresNotNull(binder, "binder");
return binder.FallbackConvert(this);
}
public override DynamicMetaObject BindConvert(ConvertBinder binder) {
if (IsOverridden("TryConvert")) {
return CallMethodWithResult("TryConvert", binder, NoArgs, (e) => binder.FallbackConvert(this, e));
}
return base.BindConvert(binder);
}
public override DynamicMetaObject BindConvert(ConvertBinder binder)
{
if (!this.IsOverridden("TryConvert"))
{
return(base.BindConvert(binder));
}
return(this.CallMethodWithResult("TryConvert", binder, DynamicProxyMetaObject <T> .NoArgs, (DynamicMetaObject e) => binder.FallbackConvert(this, e), null));
}
private DynamicMetaObject/*!*/ MakeConvertRuleForCall(ConvertBinder/*!*/ convertToAction, DynamicMetaObject/*!*/ self, SymbolId symbolId, string returner) {
PythonType pt = ((IPythonObject)self.Value).PythonType;
PythonTypeSlot pts;
CodeContext context = BinderState.GetBinderState(convertToAction).Context;
if (pt.TryResolveSlot(context, symbolId, out pts) && !IsBuiltinConversion(context, pts, symbolId, pt)) {
ParameterExpression tmp = Ast.Variable(typeof(object), "func");
Expression callExpr = Ast.Call(
PythonOps.GetConversionHelper(returner, GetResultKind(convertToAction)),
Ast.Dynamic(
new PythonInvokeBinder(
BinderState.GetBinderState(convertToAction),
new CallSignature(0)
),
typeof(object),
BinderState.GetCodeContext(convertToAction),
tmp
)
);
if (typeof(Extensible<>).MakeGenericType(convertToAction.Type).IsAssignableFrom(self.GetLimitType())) {
// if we're doing a conversion to the underlying type and we're an
// Extensible<T> of that type:
// if an extensible type returns it's self in a conversion, then we need
// to actually return the underlying value. If an extensible just keeps
// returning more instances of it's self a stack overflow occurs - both
// behaviors match CPython.
callExpr = AstUtils.Convert(AddExtensibleSelfCheck(convertToAction, self, callExpr), typeof(object));
}
return new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
Ast.Condition(
BindingHelpers.CheckTypeVersion(
self.Expression,
pt.Version
),
Ast.Condition(
MakeTryGetTypeMember(
BinderState.GetBinderState(convertToAction),
pts,
self.Expression,
tmp
),
callExpr,
AstUtils.Convert(
ConversionFallback(convertToAction),
typeof(object)
)
),
convertToAction.Defer(this).Expression
)
),
self.Restrict(self.GetRuntimeType()).Restrictions
);
}
return convertToAction.FallbackConvert(this);
}
/// <summary>
/// Performs the binding of the dynamic conversion operation.
/// </summary>
/// <param name="binder">An instance of the <see cref="ConvertBinder"/> that represents the details of the dynamic operation.</param>
/// <returns>The new <see cref="DynamicMetaObject"/> representing the result of the binding.</returns>
public virtual DynamicMetaObject BindConvert(ConvertBinder binder)
{
ContractUtils.RequiresNotNull(binder, "binder");
return(binder.FallbackConvert(this));
}
public override DynamicMetaObject BindConvert(ConvertBinder binder)
{
return(binder.FallbackConvert(_baseMetaObject, AddTypeRestrictions(_metaObject.BindConvert(binder))));
}
private DynamicMetaObject/*!*/ MakeConvertToBool(ConvertBinder/*!*/ conversion) {
DynamicMetaObject self = Restrict(typeof(OldInstance));
ParameterExpression tmp = Ast.Variable(typeof(bool?), "tmp");
DynamicMetaObject fallback = conversion.FallbackConvert(this);
Type resType = BindingHelpers.GetCompatibleType(typeof(bool), fallback.Expression.Type);
return new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
Ast.Condition(
Ast.NotEqual(
Ast.Assign(
tmp,
Ast.Call(
typeof(PythonOps).GetMethod("OldInstanceConvertToBoolNonThrowing"),
AstUtils.Constant(BinderState.GetBinderState(conversion).Context),
self.Expression
)
),
AstUtils.Constant(null)
),
AstUtils.Convert(tmp, resType),
AstUtils.Convert(fallback.Expression, resType)
)
),
self.Restrictions
);
}
private DynamicMetaObject/*!*/ MakeConvertToCommon(ConvertBinder/*!*/ conversion, SymbolId symbolId) {
ParameterExpression tmp = Ast.Variable(typeof(object), "convertResult");
DynamicMetaObject self = Restrict(typeof(OldInstance));
return new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
Ast.Condition(
MakeOneConvert(conversion, self, symbolId, tmp),
tmp,
AstUtils.Convert(
conversion.FallbackConvert(this).Expression,
typeof(object)
)
)
),
self.Restrictions
);
}
private DynamicMetaObject/*!*/ MakeConvertToIEnumerable(ConvertBinder/*!*/ conversion, Type genericType) {
ParameterExpression tmp = Ast.Variable(conversion.Type, "res");
DynamicMetaObject self = Restrict(typeof(OldInstance));
return new DynamicMetaObject(
Ast.Block(
new ParameterExpression[] { tmp },
Ast.Condition(
Ast.NotEqual(
Ast.Assign(
tmp,
Ast.Call(
typeof(PythonOps).GetMethod("OldInstanceConvertToIEnumerableOfTNonThrowing").MakeGenericMethod(genericType),
AstUtils.Constant(BinderState.GetBinderState(conversion).Context),
self.Expression
)
),
AstUtils.Constant(null)
),
tmp,
AstUtils.Convert(
AstUtils.Convert(
conversion.FallbackConvert(this).Expression,
typeof(object)
),
conversion.Type
)
)
),
self.Restrictions
);
}
