Add Kind parameter to InlayHint

CHANGELOG.md

@@ -1,6 +1,18 @@
 # Changelog
 All changes to the project will be documented in this file.
 
+## [1.39.9] - 2023-10-04
+* Add Kind parameter to InlayHint (PR: [#2570](https://github.dev/OmniSharp/omnisharp-roslyn/pull/2570))
+* Do not include commit characters if the typed span is empty (PR: [#2569](https://github.com/OmniSharp/omnisharp-roslyn/pull/2569))
+* Update Roslyn to version 4.9.0-1.23504.3 (PR: [#2567](https://github.com/OmniSharp/omnisharp-roslyn/pull/2567))
+* Async diagnostics analyzer work queue (PR: [#2351](https://github.com/OmniSharp/omnisharp-roslyn/pull/2351))
+* Add InlayHint implementation to OmniSharp.LSP (PR: [#2566](https://github.com/OmniSharp/omnisharp-roslyn/pull/2566))
+* Include the project file name when invoking `dotnet build` (PR: [#2565](https://github.com/OmniSharp/omnisharp-roslyn/pull/2565))
+* feat: ignore diagnostics for generated code (PR: [#2509](https://github.com/OmniSharp/omnisharp-roslyn/pull/2509))
+* Update documentation to reflect --stdio flag deprecation (#2439) (PR: [#2554](https://github.com/OmniSharp/omnisharp-roslyn/pull/2554))
+* Update Roslyn to version 4.8.0-1.23374.10 (PR: [#2555](https://github.com/OmniSharp/omnisharp-roslyn/pull/2555))
+* Use double quote when quoting un script path (PR: [#2553](https://github.com/OmniSharp/omnisharp-roslyn/pull/2553))
+
 ## [1.39.8] - 2023-07-17
 * Use core LSP TokenTypes where possible and validate token names (PR: [#2548](https://github.com/OmniSharp/omnisharp-roslyn/pull/2548))
 

src/OmniSharp.Abstractions/Models/v1/InlayHints/InlayHint.cs

@@ -16,6 +16,12 @@ public sealed record InlayHint
     /// </summary>
     public string Label { get; set; }
 
+    /// <summary>
+    /// The kind of this hint. Can be omitted in which case the client
+	/// should fall back to a reasonable default.
+    /// </summary>
+    public InlayHintKind? Kind { get; set; }
+
     /// <summary>
     /// The tooltip text when you hover over this item.
     /// </summary>

src/OmniSharp.LanguageServerProtocol/Handlers/OmniSharpInlayHintHandler.cs

@@ -77,6 +77,7 @@ private static LSPInlayHint ToLSPInlayHint(OmniSharpInlayHint hint)
             return new LSPInlayHint()
             {
                 Label = trimmedLabel,
+                Kind = hint.Kind.HasValue ? ConvertEnum<OmniSharpInlayHintKind, LSPInlayHintKind>(hint.Kind.Value) : null,
                 Tooltip = hint.Tooltip is not null
                     ? new MarkupContent() { Kind = MarkupKind.Markdown, Value = hint.Tooltip }
                     : null,
@@ -93,6 +94,7 @@ private static OmniSharpInlayHint FromLSPInlayHint(LSPInlayHint hint)
             return new OmniSharpInlayHint()
             {
                 Label = $"{(hint.PaddingLeft == true ? " " : "")}{hint.Label.String}{(hint.PaddingRight == true ? " " : "")}",
+                Kind = hint.Kind.HasValue ? ConvertEnum<LSPInlayHintKind, OmniSharpInlayHintKind>(hint.Kind.Value) : null,
                 Tooltip = hint.Tooltip is not null
                     ? hint.Tooltip.HasMarkupContent
                         ? hint.Tooltip.MarkupContent.Value

src/OmniSharp.Roslyn.CSharp/Services/InlayHints/InlayHintService.cs

@@ -35,6 +35,8 @@ internal class InlayHintService :
     private readonly InlineHintCache _cache;
     private readonly FormattingOptions _formattingOptions;
 
+    private const double ParameterRanking = 0.0;
+
     [ImportingConstructor]
     public InlayHintService(OmniSharpWorkspace workspace, FormattingOptions formattingOptions, ILoggerFactory loggerFactory, IOptionsMonitor<OmniSharpOptions> omniSharpOptions)
     {
@@ -140,6 +142,9 @@ public List<InlayHint> MapAndCacheHints(ImmutableArray<OmniSharpInlineHint> rosl
                     resultList.Add(new InlayHint()
                     {
                         Label = string.Concat(hint.DisplayParts),
+                        Kind = hint.Ranking == ParameterRanking
+                            ? InlayHintKind.Parameter
+                            : InlayHintKind.Type,
                         Position = text.GetPointFromPosition(hint.Span.End),
                         TextEdits = ConvertToTextChanges(hint.ReplacementTextChange, text),
                         Data = (solutionVersionString, position)