212this.compilation = compilation;

96if (compilation.LanguageVersion >= MessageID.IDS_FeatureRecursivePatterns.RequiredVersion())

447if (compilation.IsFeatureEnabled(MessageID.IDS_FeatureAutoDefaultStructs)) 472if (!compilation.IsFeatureEnabled(MessageID.IDS_FeatureAutoDefaultStructs)) 1246if (compilation.IsFeatureEnabled(MessageID.IDS_FeatureAutoDefaultStructs)) 1298else if (compilation.IsFeatureEnabled(MessageID.IDS_FeatureAutoDefaultStructs)) 1549Binder.InferConstantIndexFromSystemIndex(compilation, elementAccess.Argument, length, out _) is 0)) 2311if (node.Type == (object)this.compilation.ImplicitlyTypedVariableUsedInForbiddenZoneType) 2631if (!type.IsFromCompilation(this.compilation)) 2801node.Type.OriginalDefinition.Equals(compilation.GetWellKnownType(WellKnownType.System_Span_T), TypeCompareKind.AllIgnoreOptions))

165pattern = UnionMatchingRewriter.Rewrite(compilation, pattern); 391var expressionTypeWithAnnotations = expressionTypeWithState.ToTypeWithAnnotations(compilation); 528TrackNullableStateForAssignment(valueOpt: null, inputTypeWithState.ToTypeWithAnnotations(compilation), outputSlot, inputTypeWithState, inputSlot); 635var inferredType = value.ToTypeWithAnnotations(compilation, asAnnotatedType: boundLocal.DeclarationKind == BoundLocalDeclarationKind.WithInferredType); 1136placeholderBuilder.Add(CreatePlaceholderIfNecessary(expression, armType.ToTypeWithAnnotations(compilation)));

323SetResult(expression, resultType: type, lvalueType: type.ToTypeWithAnnotations(compilation), updateAnalyzedNullability: updateAnalyzedNullability); 328SetAnalyzedNullability(expression, resultType: type, lvalueType: type.ToTypeWithAnnotations(compilation)); 336VisitResult visitResult = _visitResult.WithLValueType(ResultType.ToTypeWithAnnotations(compilation)); 358private void SetInvalidResult() => SetResult(expression: null, _invalidType, _invalidType.ToTypeWithAnnotations(compilation), updateAnalyzedNullability: false); 553compilation.TestOnlyCompilationData is NullableAnalysisData { MaxRecursionDepth: var depth } && 964|| compilation.IsFeatureEnabled(MessageID.IDS_FeatureAutoDefaultStructs))) 1984if (compilation.TestOnlyCompilationData is NullableAnalysisData { Data: { } state }) 2544if (isMaybeDefaultValue(valueType) && !allowUnconstrainedTypeParameterAnnotations(compilation)) 3193_returnTypesOpt.Add((node, result.ToTypeWithAnnotations(compilation))); 3272if (method.IsAsyncEffectivelyReturningGenericTask(compilation)) 3290if (node.Type == (object)this.compilation.ImplicitlyTypedVariableUsedInForbiddenZoneType) 3661var resultType = ResultType.ToTypeWithAnnotations(compilation); 3808type = valueType.ToAnnotatedTypeWithAnnotations(compilation); 4288var collectionKind = ConversionsBase.GetCollectionExpressionTypeKind(this.compilation, collectionType, out var targetElementType); 5000var lvalueType = resultType.ToTypeWithAnnotations(compilation); 5078arg.ToTypeWithAnnotations(compilation)); 5192placeholderBuilder.Add(CreatePlaceholderIfNecessary(expressionNoConversion, expressionType.ToTypeWithAnnotations(compilation))); 5221inferredType = TypeWithState.Create(inferredType.Type, elementState).ToTypeWithAnnotations(compilation); 5384Binder.IsWellKnownSystemRange(node.Indices[0].Type, compilation)) 5669SetResult(binary, inferredResult, inferredResult.ToTypeWithAnnotations(compilation)); 5787[new BoundExpressionWithNullability(leftOperand.Syntax, leftOperand, leftUnderlyingType.ToTypeWithAnnotations(compilation).NullableAnnotation, leftUnderlyingType.Type), 5788new BoundExpressionWithNullability(rightOperand.Syntax, rightOperand, rightUnderlyingType.ToTypeWithAnnotations(compilation).NullableAnnotation, rightUnderlyingType.Type)], 6623BoundExpression consequencePlaceholder = CreatePlaceholderIfNecessary(consequence, consequenceRValue.ToTypeWithAnnotations(compilation)); 6624BoundExpression alternativePlaceholder = CreatePlaceholderIfNecessary(alternative, alternativeRValue.ToTypeWithAnnotations(compilation)); 7192var isStaticEqualsMethod = method.Equals(compilation.GetSpecialTypeMember(SpecialMember.System_Object__EqualsObjectObject)) 7193|| method.Equals(compilation.GetSpecialTypeMember(SpecialMember.System_Object__ReferenceEquals)); 7195isWellKnownEqualityMethodOrImplementation(compilation, method, receiverType.Type, WellKnownMember.System_Collections_Generic_IEqualityComparer_T__Equals)) 7203.Equals(compilation.GetSpecialTypeMember(SpecialMember.System_Object__Equals)); 7206isWellKnownEqualityMethodOrImplementation(compilation, method, receiverType.Type, WellKnownMember.System_IEquatable_T__Equals))) 7347return method.Equals(compilation.GetWellKnownTypeMember(WellKnownMember.System_Threading_Interlocked__CompareExchange), SymbolEqualityComparer.ConsiderEverything.CompareKind) 7348|| method.OriginalDefinition.Equals(compilation.GetWellKnownTypeMember(WellKnownMember.System_Threading_Interlocked__CompareExchange_T), SymbolEqualityComparer.ConsiderEverything.CompareKind); 7431else if (method.OriginalDefinition == compilation.GetSpecialTypeMember(SpecialMember.System_Nullable_T_get_Value)) 8479var varType = worstCaseParameterWithState.ToAnnotatedTypeWithAnnotations(compilation); 8485SetAnalyzedNullability(discard, new VisitResult(parameterWithState, parameterWithState.ToTypeWithAnnotations(compilation)), isLvalue: true); 8997var argumentType = visitResult.RValueType.ToTypeWithAnnotations(compilation); 9032new ConstraintsHelper.CheckConstraintsArgs(compilation, _conversions, includeNullability: true, NoLocation.Singleton, diagnostics: null, template: CompoundUseSiteInfo<AssemblySymbol>.Discarded), 9061var constraintsArgs = new ConstraintsHelper.CheckConstraintsArgs(compilation, _conversions, includeNullability: false, location: NoLocation.Singleton, diagnostics: null, template: CompoundUseSiteInfo<AssemblySymbol>.Discarded); 9472ImmutableArray<TypeWithAnnotations> elementTypesWithAnnotations = elementTypes.SelectAsArray(a => a.ToTypeWithAnnotations(compilation)); 9494tupleOpt.CheckConstraints(new ConstraintsHelper.CheckConstraintsArgs(compilation, _conversions, includeNullability: true, node.Syntax.Location, diagnostics: null), 9748compilation, 9804compilation, 9819compilation, 10762SetAnalyzedNullability(sourceToParameterConversion, new VisitResult(operandType, operandType.ToTypeWithAnnotations(compilation))); 10782SetAnalyzedNullability(unionConstructionConversion, new VisitResult(unionTypeWithState, unionTypeWithState.ToTypeWithAnnotations(compilation))); 10840var visitResult = new VisitResult(resultType, resultType.ToTypeWithAnnotations(compilation)); 10896return compilation.GetSpecialType(SpecialType.System_Nullable_T).Construct(ImmutableArray.Create(underlying)); 11175arguments.Add(CreatePlaceholderIfNecessary(receiverOpt, receiverType.ToTypeWithAnnotations(compilation))); 11350var lvalueType = rightState.ToTypeWithAnnotations(compilation); 11561placeholderArgs.Add(CreatePlaceholderIfNecessary(right, rightResult.ToTypeWithAnnotations(compilation))); 11661_variables.SetType(local.LocalSymbol, operandType.ToAnnotatedTypeWithAnnotations(compilation)); 11783expr = CreatePlaceholderIfNecessary(expr, rightResult.ToTypeWithAnnotations(compilation)); 11959var operandTypeWithAnnotations = operandType.ToTypeWithAnnotations(compilation); 12455if (getMethod == compilation.GetSpecialTypeMember(SpecialMember.System_Nullable_T_get_Value)) 12459if (getMethod == compilation.GetSpecialTypeMember(SpecialMember.System_Nullable_T_get_HasValue)) 12473var getValue = (MethodSymbol?)compilation.GetSpecialTypeMember(SpecialMember.System_Nullable_T_get_Value); 12576targetTypeWithAnnotations = resultTypeWithState.ToTypeWithAnnotations(compilation); 12586else if (ForEachLoopBinder.IsIEnumerableT(collectionExpression.Type.OriginalDefinition, isAsync, compilation)) 12591targetTypeWithAnnotations = TypeWithAnnotations.Create(ForEachLoopBinder.GetIEnumerableOfT(resultType, isAsync, compilation, ref discardedUseSiteInfo, out bool foundMultiple, needSupportForRefStructInterfaces: out _)); 12626SetAnalyzedNullability(collectionExpression, new VisitResult(convertedResult, convertedResult.ToTypeWithAnnotations(compilation))); 12658NamedTypeSymbol spanType = compilation.GetWellKnownType(wellKnownSpan); 12716TypeWithAnnotations sourceType = sourceState.ToTypeWithAnnotations(compilation); 12761destinationType = sourceState.ToAnnotatedTypeWithAnnotations(compilation); 12970[new BoundExpressionWithNullability(operand.Syntax, operand, operandType.ToTypeWithAnnotations(compilation).NullableAnnotation, operandType.Type)], 13601new VisitResult(result, result.ToTypeWithAnnotations(compilation)), 13752TypeWithAnnotations elementType = InMethodBinder.GetIteratorElementTypeFromReturnType(compilation, RefKind.None,