247/// The delegate is invoked by <see cref="VisitConversion(BoundConversion, BoundExpression, Conversion, TypeWithAnnotations, TypeWithState, bool, bool, bool, AssignmentKind, ParameterSymbol, bool, bool, bool, bool, Optional&lt;LocalState&gt;,bool, Location, ArrayBuilder&lt;VisitResult&gt;)"/>. 2362AssignmentKind assignmentKind = AssignmentKind.Assignment, 2390ReportDiagnostic(assignmentKind == AssignmentKind.Return ? ErrorCode.WRN_NullReferenceReturn : ErrorCode.WRN_NullAsNonNullable, location); 2392else if (assignmentKind == AssignmentKind.Argument) 2412ReportDiagnostic(assignmentKind == AssignmentKind.Return ? ErrorCode.WRN_NullReferenceReturn : ErrorCode.WRN_NullReferenceAssignment, location); 2915assignmentKind: AssignmentKind.Assignment); 2967returnState = VisitOptionalImplicitConversion(expr, returnType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Return); 3562valueType = VisitOptionalImplicitConversion(initializer, targetTypeOpt: inferredType ? default : type, useLegacyWarnings: true, trackMembers: true, AssignmentKind.Assignment); 3780useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment, delayCompletionForTargetType: true).completion; 3795useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment, delayCompletionForTargetType: true).completion; 4327VisitOptionalImplicitConversion(node.Right, type, useLegacyWarnings: false, trackMembers: true, AssignmentKind.Assignment, delayCompletionForType); 4647_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment); 4692fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: true, reportTopLevelWarnings: false); 4704checkConversion: true, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: false); 4806checkConversion: false, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Return, 5192AssignmentKind.Argument, 5230AssignmentKind.Argument); 5632TypeWithState rightResult = VisitOptionalImplicitConversion(rightOperand, targetType, useLegacyWarnings: UseLegacyWarnings(leftOperand), trackMembers: false, AssignmentKind.Assignment); 5727AssignmentKind.Assignment, 5768assignmentKind: AssignmentKind.Assignment); 6194AssignmentKind.Assignment, 7446assignmentKind: AssignmentKind.Argument, 8354AssignmentKind.Assignment, 8368private TypeWithState VisitOptionalImplicitConversion(BoundExpression expr, TypeWithAnnotations targetTypeOpt, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind) 8385AssignmentKind assignmentKind, 8397bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, 8431Func<TypeWithAnnotations, TypeWithState> visitConversionAsContinuation(BoundExpression expr, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, BoundExpression operand, Conversion conversion, TypeWithState operandType) 8589AssignmentKind assignmentKind, 8844AssignmentKind assignmentKind, 9168if (assignmentKind == AssignmentKind.Argument) 9394AssignmentKind assignmentKind, 9462AssignmentKind.Argument, 9613AssignmentKind assignmentKind, 9625if (assignmentKind == AssignmentKind.Argument) 10020rightState = VisitOptionalImplicitConversion(right, targetTypeOpt: discarded ? default : leftLValueType, UseLegacyWarnings(left), trackMembers: true, AssignmentKind.Assignment); 10341valueType = VisitOptionalImplicitConversion(rightPart, lvalueType, useLegacyWarnings: true, trackMembers: true, AssignmentKind.Assignment); 10358AssignmentKind.Assignment, 10486AssignmentKind assignmentKind = AssignmentKind.Assignment; 10498assignmentKind = AssignmentKind.Argument; 10551AssignmentKind.Assignment); 10620assignmentKind: AssignmentKind.Assignment); 10662ReportNullableAssignmentIfNecessary(argument, paramType, argumentType, useLegacyWarnings: false, AssignmentKind.Argument, parameterOpt: parameter); 11023AssignmentKind.Assignment); 11198AssignmentKind.ForEachIterationVariable, 11334assignmentKind: AssignmentKind.Argument, 12059_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Return);