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[DocC Live Preview] Cache on-disk snapshots opened in sourcekitd #2226

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@matthewbastien matthewbastien commented Jul 31, 2025

Removed SwiftLanguageService.withSnapshotFromDiskOpenedInSourcekitd() in favor of a new OnDiskDocumentManager actor that will cache all snapshots opened for the duration of a textDocument/doccDocumentation request. This will prevent the syntax tree from being parsed multiple times for the same document in a single request.

Follow up to #2216

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@swift-ci please test

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@matthewbastien
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@swift-ci please test

@matthewbastien
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@swift-ci please test windows

/// - Parameter symbolLocation: The location of a symbol to find the symbol graph for.
/// - Returns: The symbol graph for this location, if any.
func fetchSymbolGraph(at symbolLocation: SymbolLocation) async throws -> String? {
let swiftLanguageService = try await swiftLanguageService(for: symbolLocation.documentUri)
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I think we’re never re-using an open document, are we? I don’t even think that we ever register open documents.

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I must have slipped into a coma or something while writing this... Good catch!

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@swift-ci please test

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@swift-ci please test Windows

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