Kyle Isom
1a77f28ce4
- Introduced `HighlighterRegistry` with support for multiple language highlighters (e.g., JSON, Markdown, Python). - Added `JsonHighlighter` implementation for basic JSON syntax highlighting.
46 lines
1.3 KiB
C++
46 lines
1.3 KiB
C++
// HighlighterEngine.h - caching layer for per-line highlights
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#pragma once
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#include <cstdint>
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#include <memory>
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#include <unordered_map>
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#include <vector>
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#include "Highlight.h"
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#include "LanguageHighlighter.h"
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class Buffer;
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namespace kte {
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class HighlighterEngine {
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public:
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HighlighterEngine();
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~HighlighterEngine();
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void SetHighlighter(std::unique_ptr<LanguageHighlighter> hl);
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// Retrieve highlights for a given line and buffer version.
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// If cache is stale, recompute using the current highlighter.
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const LineHighlight &GetLine(const Buffer &buf, int row, std::uint64_t buf_version) const;
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// Invalidate cached lines from row (inclusive)
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void InvalidateFrom(int row);
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bool HasHighlighter() const { return static_cast<bool>(hl_); }
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private:
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std::unique_ptr<LanguageHighlighter> hl_;
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// Simple cache by row index (mutable to allow caching in const GetLine)
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mutable std::unordered_map<int, LineHighlight> cache_;
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// For stateful highlighters, remember per-line state (state after finishing that row)
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struct StateEntry {
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std::uint64_t version{0};
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// Using the interface type; forward-declare via header
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StatefulHighlighter::LineState state;
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};
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mutable std::unordered_map<int, StateEntry> state_cache_;
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};
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} // namespace kte
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