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; 4330VisitOptionalImplicitConversion(node.Right, type, useLegacyWarnings: false, trackMembers: true, AssignmentKind.Assignment, delayCompletionForType); 4650_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Assignment); 4695fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: true, reportTopLevelWarnings: false); 4707checkConversion: true, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Assignment, reportRemainingWarnings: false); 4809checkConversion: false, fromExplicitCast: false, useLegacyWarnings: false, AssignmentKind.Return, 5195AssignmentKind.Argument, 5233AssignmentKind.Argument); 5635TypeWithState rightResult = VisitOptionalImplicitConversion(rightOperand, targetType, useLegacyWarnings: UseLegacyWarnings(leftOperand), trackMembers: false, AssignmentKind.Assignment); 5730AssignmentKind.Assignment, 5771assignmentKind: AssignmentKind.Assignment); 6197AssignmentKind.Assignment, 7449assignmentKind: AssignmentKind.Argument, 8357AssignmentKind.Assignment, 8371private TypeWithState VisitOptionalImplicitConversion(BoundExpression expr, TypeWithAnnotations targetTypeOpt, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind) 8388AssignmentKind assignmentKind, 8400bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, 8434Func<TypeWithAnnotations, TypeWithState> visitConversionAsContinuation(BoundExpression expr, bool useLegacyWarnings, bool trackMembers, AssignmentKind assignmentKind, BoundExpression operand, Conversion conversion, TypeWithState operandType) 8592AssignmentKind assignmentKind, 8847AssignmentKind assignmentKind, 9171if (assignmentKind == AssignmentKind.Argument) 9397AssignmentKind assignmentKind, 9465AssignmentKind.Argument, 9616AssignmentKind assignmentKind, 9628if (assignmentKind == AssignmentKind.Argument) 10023rightState = VisitOptionalImplicitConversion(right, targetTypeOpt: discarded ? default : leftLValueType, UseLegacyWarnings(left), trackMembers: true, AssignmentKind.Assignment); 10344valueType = VisitOptionalImplicitConversion(rightPart, lvalueType, useLegacyWarnings: true, trackMembers: true, AssignmentKind.Assignment); 10361AssignmentKind.Assignment, 10489AssignmentKind assignmentKind = AssignmentKind.Assignment; 10501assignmentKind = AssignmentKind.Argument; 10554AssignmentKind.Assignment); 10623assignmentKind: AssignmentKind.Assignment); 10665ReportNullableAssignmentIfNecessary(argument, paramType, argumentType, useLegacyWarnings: false, AssignmentKind.Argument, parameterOpt: parameter); 11026AssignmentKind.Assignment); 11201AssignmentKind.ForEachIterationVariable, 11337assignmentKind: AssignmentKind.Argument, 12062_ = VisitOptionalImplicitConversion(expr, elementType, useLegacyWarnings: false, trackMembers: false, AssignmentKind.Return);