csharpdeeb25a2 | 1 | using Microsoft.CodeAnalysis.CSharp; |
| 2 | using Microsoft.CodeAnalysis.CSharp.Syntax; |
| 3 | using Microsoft.CodeAnalysis.Text; |
| 4 | |
| 5 | namespace CascadeIDE.Services; |
| 6 | |
| 7 | public sealed partial class CSharpLanguageService |
| 8 | { |
| 9 | /// <summary>Sort using directives and remove duplicates (Roslyn fast path).</summary> |
| 10 | public string OrganizeUsings(string filePath, string sourceText, CancellationToken ct = default) |
| 11 | { |
| 12 | if (string.IsNullOrEmpty(filePath)) |
| 13 | return sourceText; |
| 14 | |
| 15 | try |
| 16 | { |
| 17 | var tree = CSharpSyntaxTree.ParseText(sourceText, path: filePath, cancellationToken: ct); |
| 18 | if (tree.GetRoot(ct) is not CompilationUnitSyntax root) |
| 19 | return sourceText; |
| 20 | |
| 21 | var seen = new HashSet<string>(StringComparer.Ordinal); |
| 22 | var sorted = new List<UsingDirectiveSyntax>(); |
| 23 | foreach (var u in root.Usings.OrderBy(static u => u.Name?.ToString() ?? "", StringComparer.Ordinal)) |
| 24 | { |
| 25 | var key = u.ToFullString().Trim(); |
| 26 | if (!seen.Add(key)) |
| 27 | continue; |
| 28 | sorted.Add(u); |
| 29 | } |
| 30 | |
| 31 | var newRoot = root.WithUsings(SyntaxFactory.List(sorted)); |
| 32 | return newRoot.ToFullString(); |
| 33 | } |
| 34 | catch |
| 35 | { |
| 36 | return sourceText; |
| 37 | } |
| 38 | } |
| 39 | } |
| 40 | |
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