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;)"/>. 2364AssignmentKind assignmentKind = AssignmentKind.Assignment, 2392ReportDiagnostic(assignmentKind == AssignmentKind.Return ? ErrorCode.WRN_NullReferenceReturn : ErrorCode.WRN_NullAsNonNullable, location); 2394else if (assignmentKind == AssignmentKind.Argument) 2414ReportDiagnostic(assignmentKind == AssignmentKind.Return ? ErrorCode.WRN_NullReferenceReturn : ErrorCode.WRN_NullReferenceAssignment, location); 2917assignmentKind: AssignmentKind.Assignment); 2969returnState = VisitOptionalImplicitConversion(expr, returnType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Return); 3564valueType = VisitOptionalImplicitConversion(initializer, targetTypeOpt: inferredType ? default : type, useLegacyWarnings: true, trackMembers: true, AssignmentKind.Assignment); 3782useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment, delayCompletionForTargetType: true).completion; 3797useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment, delayCompletionForTargetType: true).completion; 4332VisitOptionalImplicitConversion(node.Right, type, useLegacyWarnings: false, trackMembers: true, AssignmentKind.Assignment, delayCompletionForType); 4652_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment); 4697fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: true, reportTopLevelWarnings: false); 4709checkConversion: true, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: false); 4811checkConversion: false, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Return, 5197AssignmentKind.Argument, 5235AssignmentKind.Argument); 5637TypeWithState rightResult = VisitOptionalImplicitConversion(rightOperand, targetType, useLegacyWarnings: UseLegacyWarnings(leftOperand), trackMembers: false, AssignmentKind.Assignment); 5732AssignmentKind.Assignment, 5773assignmentKind: AssignmentKind.Assignment); 6199AssignmentKind.Assignment, 7457assignmentKind: AssignmentKind.Argument, 8365AssignmentKind.Assignment, 8379private TypeWithState VisitOptionalImplicitConversion(BoundExpression expr, TypeWithAnnotations targetTypeOpt, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind) 8396AssignmentKind assignmentKind, 8408bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, 8442Func<TypeWithAnnotations, TypeWithState> visitConversionAsContinuation(BoundExpression expr, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, BoundExpression operand, Conversion conversion, TypeWithState operandType) 8600AssignmentKind assignmentKind, 8855AssignmentKind assignmentKind, 9179if (assignmentKind == AssignmentKind.Argument) 9405AssignmentKind assignmentKind, 9473AssignmentKind.Argument, 9624AssignmentKind assignmentKind, 9636if (assignmentKind == AssignmentKind.Argument) 10031rightState = VisitOptionalImplicitConversion(right, targetTypeOpt: discarded ? default : leftLValueType, UseLegacyWarnings(left), trackMembers: true, AssignmentKind.Assignment); 10352valueType = VisitOptionalImplicitConversion(rightPart, lvalueType, useLegacyWarnings: true, trackMembers: true, AssignmentKind.Assignment); 10369AssignmentKind.Assignment, 10497AssignmentKind assignmentKind = AssignmentKind.Assignment; 10509assignmentKind = AssignmentKind.Argument; 10562AssignmentKind.Assignment); 10631assignmentKind: AssignmentKind.Assignment); 10673ReportNullableAssignmentIfNecessary(argument, paramType, argumentType, useLegacyWarnings: false, AssignmentKind.Argument, parameterOpt: parameter); 11034AssignmentKind.Assignment); 11209AssignmentKind.ForEachIterationVariable, 11345assignmentKind: AssignmentKind.Argument, 12070_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Return);