public OperationRetBoolBinder(PythonBinaryOperationBinder operationBinder, ConversionBinder conversionBinder) :
base(new BinderMappingInfo(
operationBinder,
ParameterMappingInfo.Parameter(0),
ParameterMappingInfo.Parameter(1)
),
new BinderMappingInfo(
conversionBinder,
ParameterMappingInfo.Action(0)
)
) {
_opBinder = operationBinder;
_convBinder = conversionBinder;
}
/// <summary>
/// Various helpers related to calling Python __*__ conversion methods
/// </summary>
private Expression/*!*/ GetConversionFailedReturnValue(ConversionBinder/*!*/ convertToAction, DynamicMetaObject/*!*/ self) {
switch (convertToAction.ResultKind) {
case ConversionResultKind.ImplicitTry:
case ConversionResultKind.ExplicitTry:
return DefaultBinder.GetTryConvertReturnValue(convertToAction.Type);
case ConversionResultKind.ExplicitCast:
case ConversionResultKind.ImplicitCast:
DefaultBinder db = BinderState.GetBinderState(convertToAction).Binder;
return DefaultBinder.MakeError(
db.MakeConversionError(
convertToAction.Type,
self.Expression
)
);
default:
throw new InvalidOperationException(convertToAction.ResultKind.ToString());
}
}
internal ConversionBinder/*!*/ Convert(Type/*!*/ type, ConversionResultKind resultKind) {
if (_conversionBinders == null) {
Interlocked.CompareExchange(
ref _conversionBinders,
new Dictionary<Type, ConversionBinder>[(int)ConversionResultKind.ExplicitTry + 1], // max conversion result kind
null
);
}
if (_conversionBinders[(int)resultKind] == null) {
Interlocked.CompareExchange(
ref _conversionBinders[(int)resultKind],
new Dictionary<Type, ConversionBinder>(),
null
);
}
Dictionary<Type, ConversionBinder> dict = _conversionBinders[(int)resultKind];
lock (dict) {
ConversionBinder res;
if (!dict.TryGetValue(type, out res)) {
dict[type] = res = new ConversionBinder(this, type, resultKind);
}
return res;
}
}
