99namespace Python . Runtime
1010{
1111using MaybeMethodBase = MaybeMethodBase < MethodBase > ;
12+
13+ public delegate void MethodBinderCoerceBindDelegate (
14+ Dictionary < string , PyObject > arguments ,
15+ MethodBase [ ] methods ,
16+ ref MethodBase ? foundBinding ) ;
17+
1218/// <summary>
1319/// A MethodBinder encapsulates information about a (possibly overloaded)
1420/// managed method, and is responsible for selecting the right method given
@@ -516,7 +522,7 @@ public MismatchedMethod(Exception exception, MethodBase mb)
516522}
517523}
518524
519- return new Binding ( mi , target , margs , outs ) ;
525+ return CoerceResult ( new Binding ( mi , target , margs , outs ) ) ;
520526}
521527else if ( matchGenerics && isGeneric )
522528{
@@ -528,7 +534,7 @@ public MismatchedMethod(Exception exception, MethodBase mb)
528534MethodInfo [ ] overloads = MatchParameters ( methods , types ) ;
529535if ( overloads . Length != 0 )
530536{
531- return Bind ( inst , args , kwargDict , overloads , matchGenerics : false ) ;
537+ return CoerceResult ( Bind ( inst , args , kwargDict , overloads , matchGenerics : false ) ) ;
532538}
533539}
534540if ( mismatchedMethods . Count > 0 )
@@ -537,6 +543,19 @@ public MismatchedMethod(Exception exception, MethodBase mb)
537543Exceptions . SetError ( aggregateException ) ;
538544}
539545return null ;
546+
547+ Binding ? CoerceResult ( Binding ? binding )
548+ {
549+ if ( binding is notnull )
550+ {
551+ var foundMethod = binding . info ;
552+ MethodBinderEvents . CoerceBind ? . Invoke ( kwargDict , methods , ref foundMethod ) ;
553+ if ( foundMethod is null )
554+ return null ;
555+ }
556+
557+ return binding ;
558+ }
540559}
541560
542561static AggregateException GetAggregateException ( IEnumerable < MismatchedMethod > mismatchedMethods )
@@ -1068,4 +1087,9 @@ static internal class ParameterInfoExtensions
10681087}
10691088}
10701089}
1090+
1091+ public static class MethodBinderEvents
1092+ {
1093+ public static MethodBinderCoerceBindDelegate ? CoerceBind ;
1094+ }
10711095}