LSP integration steps 1-4, part of 5.

HighlighterEngine.h

@@ -16,61 +16,70 @@
 class Buffer;
 
 namespace kte {
-
 class HighlighterEngine {
 public:
-    HighlighterEngine();
-    ~HighlighterEngine();
+	HighlighterEngine();
 
-    void SetHighlighter(std::unique_ptr<LanguageHighlighter> hl);
+	~HighlighterEngine();
 
-    // Retrieve highlights for a given line and buffer version.
-    // If cache is stale, recompute using the current highlighter.
-    const LineHighlight &GetLine(const Buffer &buf, int row, std::uint64_t buf_version) const;
+	void SetHighlighter(std::unique_ptr<LanguageHighlighter> hl);
 
-    // Invalidate cached lines from row (inclusive)
-    void InvalidateFrom(int row);
+	// Retrieve highlights for a given line and buffer version.
+	// If cache is stale, recompute using the current highlighter.
+	const LineHighlight &GetLine(const Buffer &buf, int row, std::uint64_t buf_version) const;
 
-    bool HasHighlighter() const { return static_cast<bool>(hl_); }
+	// Invalidate cached lines from row (inclusive)
+	void InvalidateFrom(int row);
 
-    // Phase 3: viewport-first prefetch and background warming
-    // Compute only the visible range now, and enqueue a background warm-around task.
-    // warm_margin: how many extra lines above/below to warm in the background.
-    void PrefetchViewport(const Buffer &buf, int first_row, int row_count, std::uint64_t buf_version, int warm_margin = 200) const;
+
+	bool HasHighlighter() const
+	{
+		return static_cast<bool>(hl_);
+	}
+
+
+	// Phase 3: viewport-first prefetch and background warming
+	// Compute only the visible range now, and enqueue a background warm-around task.
+	// warm_margin: how many extra lines above/below to warm in the background.
+	void PrefetchViewport(const Buffer &buf, int first_row, int row_count, std::uint64_t buf_version,
+	                      int warm_margin = 200) const;
 
 private:
-    std::unique_ptr<LanguageHighlighter> hl_;
-    // Simple cache by row index (mutable to allow caching in const GetLine)
-    mutable std::unordered_map<int, LineHighlight> cache_;
-    // For stateful highlighters, remember per-line state (state after finishing that row)
-    struct StateEntry {
-        std::uint64_t version{0};
-        // Using the interface type; forward-declare via header
-        StatefulHighlighter::LineState state;
-    };
-    mutable std::unordered_map<int, StateEntry> state_cache_;
+	std::unique_ptr<LanguageHighlighter> hl_;
+	// Simple cache by row index (mutable to allow caching in const GetLine)
+	mutable std::unordered_map<int, LineHighlight> cache_;
 
-    // Track best known contiguous state row for a given version to avoid O(n) scans
-    mutable std::unordered_map<std::uint64_t, int> state_last_contig_;
+	// For stateful highlighters, remember per-line state (state after finishing that row)
+	struct StateEntry {
+		std::uint64_t version{0};
+		// Using the interface type; forward-declare via header
+		StatefulHighlighter::LineState state;
+	};
 
-    // Thread-safety for caches and background worker state
-    mutable std::mutex mtx_;
+	mutable std::unordered_map<int, StateEntry> state_cache_;
 
-    // Background warmer
-    struct WarmRequest {
-        const Buffer *buf{nullptr};
-        std::uint64_t version{0};
-        int start_row{0};
-        int end_row{0}; // inclusive
-    };
-    mutable std::condition_variable cv_;
-    mutable std::thread worker_;
-    mutable std::atomic<bool> worker_running_{false};
-    mutable bool has_request_{false};
-    mutable WarmRequest pending_{};
+	// Track best known contiguous state row for a given version to avoid O(n) scans
+	mutable std::unordered_map<std::uint64_t, int> state_last_contig_;
 
-    void ensure_worker_started() const;
-    void worker_loop() const;
+	// Thread-safety for caches and background worker state
+	mutable std::mutex mtx_;
+
+	// Background warmer
+	struct WarmRequest {
+		const Buffer *buf{nullptr};
+		std::uint64_t version{0};
+		int start_row{0};
+		int end_row{0}; // inclusive
+	};
+
+	mutable std::condition_variable cv_;
+	mutable std::thread worker_;
+	mutable std::atomic<bool> worker_running_{false};
+	mutable bool has_request_{false};
+	mutable WarmRequest pending_{};
+
+	void ensure_worker_started() const;
+
+	void worker_loop() const;
 };
-
-} // namespace kte
+} // namespace kte