| 1 | #nullable enable |
| 2 | |
| 3 | using System.Collections.Concurrent; |
| 4 | |
| 5 | namespace CascadeIDE.Services.Intercom; |
| 6 | |
| 7 | /// <summary>In-memory parse/model cache per solution scope (ADR 0135 L1).</summary> |
| 8 | public static class IntercomAttachmentRoslynWorkspaceCache |
| 9 | { |
| 10 | private sealed class ScopeCache |
| 11 | { |
| 12 | internal readonly ConcurrentDictionary<string, CachedFile> Files = new(StringComparer.OrdinalIgnoreCase); |
| 13 | } |
| 14 | |
| 15 | private sealed record CachedFile(long LastWriteUtcTicks, IntercomAttachmentRoslynResolveSession.FileEntry Entry); |
| 16 | |
| 17 | private static readonly ConcurrentDictionary<string, ScopeCache> Scopes = new(StringComparer.Ordinal); |
| 18 | |
| 19 | public static bool TryGet( |
| 20 | string scopeKey, |
| 21 | string absoluteFilePath, |
| 22 | out IntercomAttachmentRoslynResolveSession.FileEntry entry) |
| 23 | { |
| 24 | entry = null!; |
| 25 | if (string.IsNullOrWhiteSpace(scopeKey) || string.IsNullOrWhiteSpace(absoluteFilePath)) |
| 26 | return false; |
| 27 | |
| 28 | if (!Scopes.TryGetValue(scopeKey, out var scope)) |
| 29 | return false; |
| 30 | |
| 31 | if (!scope.Files.TryGetValue(absoluteFilePath, out var cached)) |
| 32 | return false; |
| 33 | |
| 34 | if (!File.Exists(absoluteFilePath)) |
| 35 | { |
| 36 | scope.Files.TryRemove(absoluteFilePath, out _); |
| 37 | return false; |
| 38 | } |
| 39 | |
| 40 | long ticks; |
| 41 | try |
| 42 | { |
| 43 | ticks = File.GetLastWriteTimeUtc(absoluteFilePath).Ticks; |
| 44 | } |
| 45 | catch |
| 46 | { |
| 47 | return false; |
| 48 | } |
| 49 | |
| 50 | if (cached.LastWriteUtcTicks != ticks) |
| 51 | { |
| 52 | scope.Files.TryRemove(absoluteFilePath, out _); |
| 53 | return false; |
| 54 | } |
| 55 | |
| 56 | entry = cached.Entry; |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | public static void Store( |
| 61 | string scopeKey, |
| 62 | string absoluteFilePath, |
| 63 | IntercomAttachmentRoslynResolveSession.FileEntry entry) |
| 64 | { |
| 65 | if (string.IsNullOrWhiteSpace(scopeKey) || string.IsNullOrWhiteSpace(absoluteFilePath)) |
| 66 | return; |
| 67 | |
| 68 | long ticks; |
| 69 | try |
| 70 | { |
| 71 | ticks = File.GetLastWriteTimeUtc(absoluteFilePath).Ticks; |
| 72 | } |
| 73 | catch |
| 74 | { |
| 75 | return; |
| 76 | } |
| 77 | |
| 78 | var scope = Scopes.GetOrAdd(scopeKey, static _ => new ScopeCache()); |
| 79 | scope.Files[absoluteFilePath] = new CachedFile(ticks, entry); |
| 80 | } |
| 81 | |
| 82 | public static void InvalidateFile(string scopeKey, string absoluteFilePath) |
| 83 | { |
| 84 | if (string.IsNullOrWhiteSpace(scopeKey) || string.IsNullOrWhiteSpace(absoluteFilePath)) |
| 85 | return; |
| 86 | |
| 87 | if (Scopes.TryGetValue(scopeKey, out var scope)) |
| 88 | scope.Files.TryRemove(absoluteFilePath, out _); |
| 89 | } |
| 90 | |
| 91 | public static void ClearScope(string scopeKey) |
| 92 | { |
| 93 | if (string.IsNullOrWhiteSpace(scopeKey)) |
| 94 | return; |
| 95 | Scopes.TryRemove(scopeKey, out _); |
| 96 | } |
| 97 | } |
| 98 | |