chore: Apply code formatting rules (IDE0028, and IDE0300-IDE0304)

.editorconfig

@@ -78,7 +78,8 @@ csharp_prefer_static_local_function = true:suggestion
 dotnet_diagnostic.IDE0010.severity = suggestion                                    # IDE0010: Add missing cases to switch statement
 dotnet_style_object_initializer = true:suggestion                                  # IDE0017: Use object initializers
 csharp_style_inlined_variable_declaration = true:suggestion                        # IDE0018: Inline variable declaration
-dotnet_style_collection_initializer = true:suggestion                              # IDE0028: Use collection initializers
+dotnet_style_collection_initializer = true:suggestion                              # IDE0028: Use collection initializers or expressions
+dotnet_style_prefer_collection_expression = true:suggestion                        # IDE0028: Use collection initializers or expressions
 dotnet_style_prefer_auto_properties = true:suggestion                              # IDE0032: Use auto-implemented property
 dotnet_style_explicit_tuple_names = true:suggestion                                # IDE0033: Use explicitly provided tuple name
 csharp_prefer_simple_default_expression = true:suggestion                          # IDE0034: Simplify default expression

src/Docfx.App/Config/BuildJsonConfig.cs

@@ -72,7 +72,7 @@ internal class BuildJsonConfig
     /// </summary>
     [JsonProperty("globalMetadataFiles")]
     [JsonPropertyName("globalMetadataFiles")]
-    public ListWithStringFallback GlobalMetadataFiles { get; set; } = new();
+    public ListWithStringFallback GlobalMetadataFiles { get; set; } = [];
 
     /// <summary>
     /// Metadata that applies to some specific files.
@@ -99,7 +99,7 @@ internal class BuildJsonConfig
     /// </summary>
     [JsonProperty("template")]
     [JsonPropertyName("template")]
-    public ListWithStringFallback Template { get; set; } = new();
+    public ListWithStringFallback Template { get; set; } = [];
 
     /// <summary>
     /// The themes applied to the documentation.
@@ -123,7 +123,7 @@ internal class BuildJsonConfig
     ///  </example>
     [JsonProperty("postProcessors")]
     [JsonPropertyName("postProcessors")]
-    public ListWithStringFallback PostProcessors { get; set; } = new();
+    public ListWithStringFallback PostProcessors { get; set; } = [];
 
     /// <summary>
     /// Run in debug mode. With debug mode, raw model and view model will be exported

src/Docfx.App/Config/FileMetadataPairs.cs

@@ -39,7 +39,7 @@ public FileMetadataPairs(IEnumerable<FileMetadataPairsItem> items)
     /// </summary>
     public FileMetadataPairs(FileMetadataPairsItem item)
     {
-        _items = new List<FileMetadataPairsItem> { item };
+        _items = [item];
     }
 
     /// <summary>

src/Docfx.App/Config/GroupConfig.cs

@@ -23,5 +23,5 @@ internal class GroupConfig
     /// </summary>
     [Newtonsoft.Json.JsonExtensionData]
     [System.Text.Json.Serialization.JsonExtensionData]
-    public Dictionary<string, object> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = [];
 }

src/Docfx.App/Helpers/DocumentBuilderWrapper.cs

@@ -263,7 +263,7 @@ private static FileMetadata GetFileMetadata(string baseDirectory, BuildJsonConfi
         {
             foreach (var (key, value) in config.FileMetadata)
             {
-                var list = result.TryGetValue(key, out var items) ? items : result[key] = new();
+                var list = result.TryGetValue(key, out var items) ? items : result[key] = [];
                 foreach (var pair in value.Items)
                 {
                     list.Add(new FileMetadataItem(pair.Glob, key, pair.Value));
@@ -277,7 +277,7 @@ private static FileMetadata GetFileMetadata(string baseDirectory, BuildJsonConfi
             {
                 foreach (var (key, value) in JsonUtility.Deserialize<Dictionary<string, FileMetadataPairs>>(path))
                 {
-                    var list = result.TryGetValue(key, out var items) ? items : result[key] = new();
+                    var list = result.TryGetValue(key, out var items) ? items : result[key] = [];
                     foreach (var pair in value.Items)
                     {
                         list.Add(new FileMetadataItem(pair.Glob, key, pair.Value));

src/Docfx.App/Helpers/MetadataMerger.cs

@@ -14,8 +14,8 @@ namespace Docfx;
 
 internal class MetadataMerger
 {
-    private readonly Dictionary<string, Dictionary<string, object>> _metaTable = new();
-    private readonly Dictionary<string, Dictionary<string, object>> _propTable = new();
+    private readonly Dictionary<string, Dictionary<string, object>> _metaTable = [];
+    private readonly Dictionary<string, Dictionary<string, object>> _propTable = [];
 
     public void Merge(MetadataMergeParameters parameters)
     {

src/Docfx.App/PdfBuilder.cs

@@ -297,7 +297,7 @@ await Parallel.ForEachAsync(pages, async (item, _) =>
 
             var key = CleanUrl(url);
             if (!pagesByUrl.TryGetValue(key, out var dests))
-                pagesByUrl[key] = dests = new();
+                pagesByUrl[key] = dests = [];
             dests.Add((node, document.Structure.Catalog.GetNamedDestinations()));
 
             pageBytes[node] = bytes;

src/Docfx.App/RunBuild.cs

@@ -21,7 +21,7 @@ public static string Exec(BuildJsonConfig config, BuildOptions options, string c
         var stopwatch = Stopwatch.StartNew();
         if (config.Template == null || config.Template.Count == 0)
         {
-            config.Template = new ListWithStringFallback { "default" };
+            config.Template = ["default"];
         }
 
         var baseDirectory = Path.GetFullPath(string.IsNullOrEmpty(configDirectory) ? Directory.GetCurrentDirectory() : configDirectory);

src/Docfx.App/RunMerge.cs

@@ -56,7 +56,7 @@ private static MetadataMergeParameters ConfigToParameter(MergeJsonItemConfig con
             OutputBaseDir = outputDirectory,
             Metadata = config.GlobalMetadata?.ToImmutableDictionary() ?? ImmutableDictionary<string, object>.Empty,
             FileMetadata = ConvertToFileMetadataItem(baseDirectory, config.FileMetadata),
-            TocMetadata = config.TocMetadata?.ToImmutableList() ?? ImmutableList<string>.Empty,
+            TocMetadata = config.TocMetadata?.ToImmutableList() ?? [],
             Files = GetFileCollectionFromFileMapping(
                 baseDirectory,
                 DocumentType.Article,

src/Docfx.Build.Common/MarkdownReader.cs

@@ -13,7 +13,7 @@ namespace Docfx.Build.Common;
 
 public class MarkdownReader
 {
-    private static readonly ImmutableList<string> RequiredProperties = ImmutableList.Create(Constants.PropertyName.Uid);
+    private static readonly ImmutableList<string> RequiredProperties = [Constants.PropertyName.Uid];
 
     public static IEnumerable<OverwriteDocumentModel> ReadMarkdownAsOverwrite(IHostService host, FileAndType ft)
     {

src/Docfx.Build.Common/ModelAttributeHandlers/HandleModelAttributesContext.cs

@@ -14,11 +14,11 @@ public class HandleModelAttributesContext
     public bool EnableContentPlaceholder { get; set; }
     public string PlaceholderContent { get; set; }
     public bool ContainsPlaceholder { get; set; }
-    public HashSet<string> Dependency { get; set; } = new();
+    public HashSet<string> Dependency { get; set; } = [];
     public FileAndType FileAndType { get; set; }
     public HashSet<string> LinkToFiles { get; set; } = new(FilePathComparer.OSPlatformSensitiveStringComparer);
-    public HashSet<string> LinkToUids { get; set; } = new();
-    public List<UidDefinition> Uids { get; set; } = new();
-    public Dictionary<string, List<LinkSourceInfo>> UidLinkSources { get; set; } = new();
-    public Dictionary<string, List<LinkSourceInfo>> FileLinkSources { get; set; } = new();
+    public HashSet<string> LinkToUids { get; set; } = [];
+    public List<UidDefinition> Uids { get; set; } = [];
+    public Dictionary<string, List<LinkSourceInfo>> UidLinkSources { get; set; } = [];
+    public Dictionary<string, List<LinkSourceInfo>> FileLinkSources { get; set; } = [];
 }

src/Docfx.Build.Common/ModelAttributeHandlers/Handlers/UrlContentHandler.cs

@@ -98,7 +98,7 @@ private static string GetHrefFromRoot(string originalHref, HandleModelAttributes
 
             if (!context.FileLinkSources.TryGetValue(file, out List<LinkSourceInfo> sources))
             {
-                sources = new List<LinkSourceInfo>();
+                sources = [];
                 context.FileLinkSources[file] = sources;
             }
             sources.Add(new LinkSourceInfo

src/Docfx.Build.Common/Reference/OverwriteDocumentModel.cs

@@ -17,7 +17,7 @@ public class OverwriteDocumentModel
     [ExtensibleMember]
     [Newtonsoft.Json.JsonExtensionData]
     [System.Text.Json.Serialization.JsonExtensionData]
-    public Dictionary<string, object> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = [];
 
     /// <summary>
     /// The uid for this overwrite document, as defined in YAML header
@@ -49,31 +49,31 @@ public class OverwriteDocumentModel
     [YamlIgnore]
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
-    public HashSet<string> LinkToFiles { get; set; } = new();
+    public HashSet<string> LinkToFiles { get; set; } = [];
 
     /// <summary>
     /// Links to other Uids
     /// </summary>
     [YamlIgnore]
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
-    public HashSet<string> LinkToUids { get; set; } = new();
+    public HashSet<string> LinkToUids { get; set; } = [];
 
     /// <summary>
     /// Link sources information for file
     /// </summary>
     [YamlIgnore]
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
-    public Dictionary<string, List<LinkSourceInfo>> FileLinkSources { get; set; } = new();
+    public Dictionary<string, List<LinkSourceInfo>> FileLinkSources { get; set; } = [];
 
     /// <summary>
     /// Link sources information for Uid
     /// </summary>
     [YamlIgnore]
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
-    public Dictionary<string, List<LinkSourceInfo>> UidLinkSources { get; set; } = new();
+    public Dictionary<string, List<LinkSourceInfo>> UidLinkSources { get; set; } = [];
 
     /// <summary>
     /// Dependencies extracted from the markdown content

src/Docfx.Build.ManagedReference/ApplyPlatformVersion.cs

@@ -60,7 +60,7 @@ private static List<string> GetPlatformVersionFromMetadata(object value)
     {
         if (value is string text)
         {
-            return new List<string> { text };
+            return [text];
         }
 
         if (value is IEnumerable<object> collection)

src/Docfx.Build.ManagedReference/BuildOutputs/ApiBuildOutput.cs

@@ -184,7 +184,7 @@ public class ApiBuildOutput
     [ExtensibleMember]
     [Newtonsoft.Json.JsonExtensionData]
     [System.Text.Json.Serialization.JsonExtensionData]
-    public Dictionary<string, object> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = [];
 
     public static ApiBuildOutput FromModel(PageViewModel model)
     {

src/Docfx.Build.ManagedReference/BuildOutputs/ApiReferenceBuildOutput.cs

@@ -174,7 +174,7 @@ public class ApiReferenceBuildOutput
     [Newtonsoft.Json.JsonIgnore]
     [System.Text.Json.Serialization.JsonIgnore]
     [System.Text.Json.Serialization.JsonPropertyName("__metadata__")]
-    public Dictionary<string, object> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = [];
 
     [EditorBrowsable(EditorBrowsableState.Never)]
     [YamlIgnore]

src/Docfx.Build.ManagedReference/FillReferenceInformation.cs

@@ -14,7 +14,7 @@ namespace Docfx.Build.ManagedReference;
 [Export(nameof(ManagedReferenceDocumentProcessor), typeof(IDocumentBuildStep))]
 public class FillReferenceInformation : BaseDocumentBuildStep
 {
-    private readonly Dictionary<string, SourceInfo> _items = new();
+    private readonly Dictionary<string, SourceInfo> _items = [];
 
     public override string Name => nameof(FillReferenceInformation);
 

src/Docfx.Build.ManagedReference/MergeManagedReferenceDocument.cs

@@ -176,7 +176,7 @@ private static PageViewModel ConvertToVM(MergeItem mergeItem)
     {
         var vm = new PageViewModel
         {
-            Items = new List<ItemViewModel>(),
+            Items = [],
             References = mergeItem.References?.Values.ToList(),
             Metadata = mergeItem.Metadata,
         };

src/Docfx.Build.ManagedReference/SplitClassPageToMemberLevel.cs

@@ -21,8 +21,8 @@ public class SplitClassPageToMemberLevel : BaseDocumentBuildStep
     private const string SplitFromPropertyName = "_splitFrom";
     private const string IsOverloadPropertyName = "_isOverload";
     private const int MaximumFileNameLength = 180;
-    private static readonly List<string> EmptyList = new();
-    private static readonly string[] EmptyArray = Array.Empty<string>();
+    private static readonly List<string> EmptyList = [];
+    private static readonly string[] EmptyArray = [];
 
     public override string Name => nameof(SplitClassPageToMemberLevel);
 
@@ -95,7 +95,7 @@ private static void RenewDupeFileModels(FileModel dupeModel, Dictionary<string,
         }
 
         var newFilePath = GetUniqueFilePath(dupeModel.File, newFileName, newFilePaths, modelsDict);
-        var newModel = GenerateNewFileModel(dupeModel, page, Path.GetFileNameWithoutExtension(newFilePath), new Dictionary<string, int> { });
+        var newModel = GenerateNewFileModel(dupeModel, page, Path.GetFileNameWithoutExtension(newFilePath), []);
         modelsDict[newFilePath] = newModel;
     }
 
@@ -180,7 +180,7 @@ private SplittedResult SplitModelToOverloadLevel(FileModel model, Dictionary<str
         // Convert children to references
         page.References = itemsToSplit.Select(ConvertToReference).Concat(page.References).ToList();
 
-        page.Items = new List<ItemViewModel> { primaryItem };
+        page.Items = [primaryItem];
         page.Metadata[SplitReferencePropertyName] = true;
         page.Metadata[SplitFromPropertyName] = true;
 
@@ -210,7 +210,7 @@ private static IEnumerable<PageViewModel> GetNewPages(PageViewModel page)
             {
                 foreach (var item in overload)
                 {
-                    yield return ExtractPageViewModel(page, new List<ItemViewModel> { item });
+                    yield return ExtractPageViewModel(page, [item]);
                 }
             }
             else
@@ -296,7 +296,7 @@ private static List<string> GetVersionFromMetadata(object value)
     {
         if (value is string text)
         {
-            return new List<string> { text };
+            return [text];
         }
 
         return GetListFromObject(value);

src/Docfx.Build.OperationLevelRestApi/SplitRestApiToOperationLevel.cs

@@ -77,9 +77,9 @@ private static Tuple<List<FileModel>, List<TreeItemRestructure>> SplitModelToOpe
         }
 
         // Reset children
-        content.Children = new List<RestApiChildItemViewModel>();
+        content.Children = [];
         content.Metadata["_isSplittedByOperation"] = true;
-        content.Tags = new List<RestApiTagViewModel>();
+        content.Tags = [];
         model.Content = content;
 
         // Reset uid definition
@@ -123,8 +123,8 @@ private static IEnumerable<RestApiRootItemViewModel> GenerateOperationModels(Res
                 Summary = child.Summary,
                 Remarks = child.Remarks,
                 Documentation = child.Documentation,
-                Children = new List<RestApiChildItemViewModel> { child },
-                Tags = new List<RestApiTagViewModel>(),
+                Children = [child],
+                Tags = [],
                 Metadata = MergeChildMetadata(root, child)
             };
 
@@ -139,7 +139,7 @@ private static IEnumerable<RestApiRootItemViewModel> GenerateOperationModels(Res
             child.Description = null;
             child.Summary = null;
             child.Remarks = null;
-            child.Tags = new List<string>();
+            child.Tags = [];
 
             yield return model;
         }

src/Docfx.Build.OverwriteDocuments/MarkdownFragmentsCreator.cs

@@ -69,7 +69,7 @@ private List<MarkdownPropertyModel> PropertySection()
             {
                 PropertyName = key,
                 PropertyNameSource = Next(),
-                PropertyValue = new List<Block>(),
+                PropertyValue = [],
             };
             Block block;
             while ((block = Peek()) != null && !_inlineCodeHeadingRule.Parse(block, out var _))

src/Docfx.Build.OverwriteDocuments/OverwriteDocumentModelCreator.cs

@@ -37,7 +37,7 @@ internal static Dictionary<object, object> ConvertYamlCodeBlock(string yamlCodeB
     {
         if (string.IsNullOrEmpty(yamlCodeBlock) || yamlCodeBlockSource == null)
         {
-            return new Dictionary<object, object>();
+            return [];
         }
 
         using var reader = new StringReader(yamlCodeBlock);
@@ -202,7 +202,7 @@ private MarkdownDocument CreateDocument(MarkdownPropertyModel model)
 
     private static Dictionary<object, object> CreateDictionaryObject()
     {
-        return new Dictionary<object, object>();
+        return [];
     }
 
     private static List<object> CreateDictionaryArrayObject(OPathSegment segment)

src/Docfx.Build.OverwriteDocuments/OverwriteUtility.cs

@@ -79,7 +79,7 @@ public static void AddOrUpdateFragmentEntity(this Dictionary<string, MarkdownFra
             value = new MarkdownFragment
             {
                 Uid = uid,
-                Properties = new Dictionary<string, MarkdownProperty>(),
+                Properties = [],
                 Metadata = metadata
             };
             fragments.Add(uid, value);

src/Docfx.Build.OverwriteDocuments/Rules/YamlCodeBlockRule.cs

@@ -10,7 +10,7 @@ public sealed class YamlCodeBlockRule : IOverwriteBlockRule
 {
     public string TokenName => "YamlCodeBlock";
 
-    private static readonly List<string> _allowedLanguages = new() { "yaml", "yml" };
+    private static readonly List<string> _allowedLanguages = ["yaml", "yml"];
 
     public bool Parse(Block block, out string value)
     {

src/Docfx.Build.RestApi/BuildRestApiDocument.cs

@@ -15,7 +15,7 @@ namespace Docfx.Build.RestApi;
 [Export(nameof(RestApiDocumentProcessor), typeof(IDocumentBuildStep))]
 public class BuildRestApiDocument : BuildReferenceDocumentBase
 {
-    private static readonly HashSet<string> MarkupKeys = new() { "description" };
+    private static readonly HashSet<string> MarkupKeys = ["description"];
 
     public override string Name => nameof(BuildRestApiDocument);
 

src/Docfx.Build.RestApi/Swagger/InfoObject.cs

@@ -32,5 +32,5 @@ public class InfoObject
     [ExtensibleMember]
     [Newtonsoft.Json.JsonExtensionData]
     [System.Text.Json.Serialization.JsonExtensionData]
-    public Dictionary<string, object> PatternedObjects { get; set; } = new();
+    public Dictionary<string, object> PatternedObjects { get; set; } = [];
 }

src/Docfx.Build.RestApi/Swagger/Internals/SwaggerArray.cs

@@ -7,7 +7,7 @@ internal class SwaggerArray : SwaggerObjectBase
 {
     public override SwaggerObjectType ObjectType => SwaggerObjectType.Array;
 
-    public List<SwaggerObjectBase> Array { get; set; } = new();
+    public List<SwaggerObjectBase> Array { get; set; } = [];
 
     public override SwaggerObjectBase Clone()
     {

src/Docfx.Build.RestApi/Swagger/Internals/SwaggerObject.cs

@@ -7,7 +7,7 @@ internal class SwaggerObject : SwaggerObjectBase
 {
     public override SwaggerObjectType ObjectType => SwaggerObjectType.Object;
 
-    public Dictionary<string, SwaggerObjectBase> Dictionary { get; set; } = new();
+    public Dictionary<string, SwaggerObjectBase> Dictionary { get; set; } = [];
 
     public override SwaggerObjectBase Clone()
     {

src/Docfx.Build.RestApi/Swagger/OperationObject.cs

@@ -49,5 +49,5 @@ public class OperationObject
     [ExtensibleMember]
     [Newtonsoft.Json.JsonExtensionData]
     [System.Text.Json.Serialization.JsonExtensionData]
-    public Dictionary<string, object> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = [];
 }