Kyle Isom
ceef6af3ae
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- Implemented runtime API for registering custom highlighters. - Added optional Tree-sitter integration for advanced syntax parsing (disabled by default). - Updated buffer initialization and copying to support dynamic highlighter configuration. - Introduced `NullHighlighter` as a fallback for unsupported filetypes. - Enhanced CMake configuration with `KTE_ENABLE_TREESITTER` option.
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
// TreeSitterHighlighter.h - optional adapter for Tree-sitter (behind KTE_ENABLE_TREESITTER)
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#pragma once
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#ifdef KTE_ENABLE_TREESITTER
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#include <memory>
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#include <string>
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#include <vector>
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#include "LanguageHighlighter.h"
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// Forward-declare Tree-sitter C API to avoid hard coupling in headers if includes are not present
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extern "C" {
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struct TSLanguage;
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struct TSParser;
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struct TSTree;
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}
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namespace kte {
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// A minimal adapter that uses Tree-sitter to parse the whole buffer and then, for now,
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// does very limited token classification. This acts as a scaffold for future richer
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// queries. If no queries are provided, it currently produces no spans (safe fallback).
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class TreeSitterHighlighter : public LanguageHighlighter {
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public:
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explicit TreeSitterHighlighter(const TSLanguage* lang, std::string filetype);
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~TreeSitterHighlighter() override;
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void HighlightLine(const Buffer &buf, int row, std::vector<HighlightSpan> &out) const override;
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private:
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const TSLanguage* language_{nullptr};
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std::string filetype_;
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// Lazy parser to avoid startup cost; mutable to allow creation in const method
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mutable TSParser* parser_{nullptr};
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mutable TSTree* tree_{nullptr};
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void ensureParsed(const Buffer& buf) const;
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void disposeParser() const;
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};
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// Factory used by HighlighterRegistry when registering via RegisterTreeSitter.
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std::unique_ptr<LanguageHighlighter> CreateTreeSitterHighlighter(const char* filetype,
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const void* (*get_lang)());
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} // namespace kte
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#endif // KTE_ENABLE_TREESITTER
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