783EnumeratorResult found = GetEnumeratorInfoCore(syntax, collectionSyntax, ref collectionExpr, isAsync, diagnostics, out builder); 786case EnumeratorResult.Succeeded: 788case EnumeratorResult.FailedAndReported: 804bool wrongAsync = GetEnumeratorInfoCore(syntax, collectionSyntax, ref originalCollectionExpr, !isAsync, BindingDiagnosticBag.Discarded, builder: out _) == EnumeratorResult.Succeeded; 827private EnumeratorResult GetEnumeratorInfoCore(SyntaxNode syntax, SyntaxNode collectionSyntax, ref BoundExpression collectionExpr, bool isAsync, BindingDiagnosticBag diagnostics, out ForEachEnumeratorInfo.Builder builder) 829EnumeratorResult result; 855return EnumeratorResult.FailedAndReported; 864return EnumeratorResult.FailedAndReported; 880((result is EnumeratorResult.Succeeded && builder.ElementTypeWithAnnotations.Equals(elementField.TypeWithAnnotations, TypeCompareKind.AllIgnoreOptions) && 882result is EnumeratorResult.FailedAndReported)) 892if (result == EnumeratorResult.Succeeded) 912return EnumeratorResult.FailedAndReported; 929EnumeratorResult getEnumeratorInfo(SyntaxNode syntax, SyntaxNode collectionSyntax, ref BoundExpression collectionExpr, bool isAsync, BindingDiagnosticBag diagnostics, out ForEachEnumeratorInfo.Builder builder) 945return EnumeratorResult.FailedAndReported; 953return EnumeratorResult.FailedAndReported; 959return EnumeratorResult.FailedAndReported; 967return EnumeratorResult.FailedAndReported; 970return EnumeratorResult.Succeeded; 981return EnumeratorResult.FailedAndReported; 991return EnumeratorResult.FailedAndReported; 998return EnumeratorResult.FailedAndReported; 1001if (SatisfiesIEnumerableInterfaces(collectionSyntax, ref builder, unwrappedCollectionExpr, isAsync, diagnostics, unwrappedCollectionExprType) is not EnumeratorResult.FailedNotReported and var result) 1016return EnumeratorResult.FailedAndReported; 1020return EnumeratorResult.Succeeded; 1028return EnumeratorResult.FailedNotReported; 1031EnumeratorResult createPatternBasedEnumeratorResult(ref ForEachEnumeratorInfo.Builder builder, BoundExpression collectionExpr, bool isAsync, bool viaExtensionMethod, BindingDiagnosticBag diagnostics) 1062return EnumeratorResult.Succeeded; 1067return EnumeratorResult.FailedAndReported; 1071private EnumeratorResult SatisfiesIEnumerableInterfaces(SyntaxNode collectionSyntax, ref ForEachEnumeratorInfo.Builder builder, BoundExpression collectionExpr, bool isAsync, BindingDiagnosticBag diagnostics, TypeSymbol unwrappedCollectionExprType) 1075return EnumeratorResult.FailedNotReported; 1080return EnumeratorResult.FailedAndReported; 1091return EnumeratorResult.FailedAndReported; 1123return EnumeratorResult.FailedAndReported; 1200return EnumeratorResult.Succeeded;