private static List ReadTargetFrameworks()

in src/NuGet.Core/NuGet.ProjectModel/JsonPackageSpecReader.Utf8JsonStreamReader.cs [1302:1393]
84 lines of code
23 McCabe index (conditional complexity)

        private static List<ProjectRestoreMetadataFrameworkInfo> ReadTargetFrameworks(ref Utf8JsonStreamReader jsonReader)
        {
            List<ProjectRestoreMetadataFrameworkInfo> targetFrameworks = null;

            if (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.StartObject)
            {
                while (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.PropertyName)
                {
                    var frameworkPropertyName = jsonReader.GetString();
                    NuGetFramework framework = NuGetFramework.Parse(frameworkPropertyName);
                    var frameworkGroup = new ProjectRestoreMetadataFrameworkInfo(framework);

                    if (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.StartObject)
                    {
                        while (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.PropertyName)
                        {
                            if (jsonReader.ValueTextEquals(ProjectReferencesPropertyName))
                            {
                                if (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.StartObject)
                                {
                                    while (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.PropertyName)
                                    {
                                        var projectReferencePropertyName = jsonReader.GetString();
                                        string excludeAssets = null;
                                        string includeAssets = null;
                                        string privateAssets = null;
                                        string projectReferenceProjectPath = null;

                                        if (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.StartObject)
                                        {
                                            while (jsonReader.Read() && jsonReader.TokenType == JsonTokenType.PropertyName)
                                            {
                                                if (jsonReader.ValueTextEquals(ExcludeAssetsPropertyName))
                                                {
                                                    excludeAssets = jsonReader.ReadNextTokenAsString();
                                                }
                                                else if (jsonReader.ValueTextEquals(IncludeAssetsPropertyName))
                                                {
                                                    includeAssets = jsonReader.ReadNextTokenAsString();
                                                }
                                                else if (jsonReader.ValueTextEquals(PrivateAssetsPropertyName))
                                                {
                                                    privateAssets = jsonReader.ReadNextTokenAsString();
                                                }
                                                else if (jsonReader.ValueTextEquals(ProjectPathPropertyName))
                                                {
                                                    projectReferenceProjectPath = jsonReader.ReadNextTokenAsString();
                                                }
                                                else
                                                {
                                                    jsonReader.Skip();
                                                }

                                            }
                                        }

                                        frameworkGroup.ProjectReferences.Add(new ProjectRestoreReference()
                                        {
                                            ProjectUniqueName = projectReferencePropertyName,
                                            ProjectPath = projectReferenceProjectPath,

                                            IncludeAssets = LibraryIncludeFlagUtils.GetFlags(
                                                flags: includeAssets,
                                                defaultFlags: LibraryIncludeFlags.All),

                                            ExcludeAssets = LibraryIncludeFlagUtils.GetFlags(
                                                flags: excludeAssets,
                                                defaultFlags: LibraryIncludeFlags.None),

                                            PrivateAssets = LibraryIncludeFlagUtils.GetFlags(
                                                flags: privateAssets,
                                                defaultFlags: LibraryIncludeFlagUtils.DefaultSuppressParent),
                                        });
                                    }
                                }
                            }
                            else if (jsonReader.ValueTextEquals(TargetAliasPropertyName))
                            {
                                frameworkGroup.TargetAlias = jsonReader.ReadNextTokenAsString();
                            }
                            else
                            {
                                jsonReader.Skip();
                            }
                        }
                        targetFrameworks ??= [];
                        targetFrameworks.Add(frameworkGroup);
                    }
                }
            }
            return targetFrameworks;
        }