Invalidate cache when RegionsHighlighter subregions are modified
This commit is contained in:
Maxime Coste
parent
6d320328b0
commit
1574748d4e
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@ -1811,6 +1811,7 @@ public:
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}
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m_regions.insert({std::move(name), std::move(region_hl)});
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++m_regions_timestamp;
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}
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Completions complete_child(StringView path, ByteCount cursor_pos, bool group) const override
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@ -1864,6 +1865,109 @@ public:
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}
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private:
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struct Region
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{
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BufferCoord begin;
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BufferCoord end;
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StringView region;
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};
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using RegionList = Vector<Region, MemoryDomain::Highlight>;
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struct Cache
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{
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size_t timestamp = 0;
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size_t regions_timestamp = 0;
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Vector<RegionMatches, MemoryDomain::Highlight> matches;
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HashMap<BufferRange, RegionList, MemoryDomain::Highlight> regions;
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};
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using RegionAndMatch = std::pair<size_t, RegexMatchList::const_iterator>;
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// find the begin closest to pos in all matches
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RegionAndMatch find_next_begin(const Cache& cache, BufferCoord pos) const
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{
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RegionAndMatch res{0, cache.matches[0].find_next_begin(pos)};
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for (size_t i = 1; i < cache.matches.size(); ++i)
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{
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const auto& matches = cache.matches[i];
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auto it = matches.find_next_begin(pos);
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if (it != matches.begin_matches.end() and
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(res.second == cache.matches[res.first].begin_matches.end() or
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it->begin_coord() < res.second->begin_coord()))
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res = RegionAndMatch{i, it};
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}
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return res;
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}
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const RegionList& get_regions_for_range(const Buffer& buffer, BufferRange range)
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{
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Cache& cache = m_cache.get(buffer);
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const size_t buf_timestamp = buffer.timestamp();
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if (cache.timestamp != buf_timestamp or cache.regions_timestamp != m_regions_timestamp)
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{
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if (cache.timestamp == 0 or cache.regions_timestamp != m_regions_timestamp)
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{
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cache.matches.resize(m_regions.size());
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for (size_t i = 0; i < m_regions.size(); ++i)
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cache.matches[i] = m_regions.item(i).value->find_matches(buffer);
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}
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else
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{
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auto modifs = compute_line_modifications(buffer, cache.timestamp);
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for (size_t i = 0; i < m_regions.size(); ++i)
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m_regions.item(i).value->update_matches(buffer, modifs, cache.matches[i]);
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}
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cache.regions.clear();
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}
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auto it = cache.regions.find(range);
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if (it != cache.regions.end())
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return it->value;
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RegionList& regions = cache.regions[range];
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for (auto begin = find_next_begin(cache, range.begin),
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end = RegionAndMatch{ 0, cache.matches[0].begin_matches.end() };
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begin != end; )
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{
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const RegionMatches& matches = cache.matches[begin.first];
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auto& region = m_regions.item(begin.first);
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auto beg_it = begin.second;
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auto end_it = matches.find_matching_end(beg_it->end_coord(),
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region.value->match_capture() ? beg_it->capture : Optional<StringView>{});
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if (end_it == matches.end_matches.end() or end_it->end_coord() >= range.end)
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{
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regions.push_back({ {beg_it->line, beg_it->begin},
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range.end,
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region.key });
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break;
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}
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else
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{
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regions.push_back({ beg_it->begin_coord(),
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end_it->end_coord(),
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region.key });
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auto end_coord = end_it->end_coord();
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// With empty begin and end matches (for example if the regexes
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// are /"\K/ and /(?=")/), that case can happen, and would
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// result in an infinite loop.
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if (end_coord == beg_it->begin_coord())
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{
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kak_assert(beg_it->begin_coord() == beg_it->end_coord() and
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end_it->begin_coord() == end_it->end_coord());
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++end_coord.column;
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}
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begin = find_next_begin(cache, end_coord);
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}
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}
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cache.timestamp = buf_timestamp;
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cache.regions_timestamp = m_regions_timestamp;
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return regions;
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}
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struct RegionHighlighter : public Highlighter
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{
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RegionHighlighter(std::unique_ptr<Highlighter>&& delegate,
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@ -1958,107 +2062,8 @@ private:
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HashMap<String, std::unique_ptr<RegionHighlighter>, MemoryDomain::Highlight> m_regions;
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String m_default_region;
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struct Region
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{
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BufferCoord begin;
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BufferCoord end;
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StringView region;
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};
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using RegionList = Vector<Region, MemoryDomain::Highlight>;
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struct Cache
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{
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size_t timestamp = 0;
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Vector<RegionMatches, MemoryDomain::Highlight> matches;
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HashMap<BufferRange, RegionList, MemoryDomain::Highlight> regions;
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};
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size_t m_regions_timestamp = 0;
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BufferSideCache<Cache> m_cache;
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using RegionAndMatch = std::pair<size_t, RegexMatchList::const_iterator>;
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// find the begin closest to pos in all matches
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RegionAndMatch find_next_begin(const Cache& cache, BufferCoord pos) const
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{
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RegionAndMatch res{0, cache.matches[0].find_next_begin(pos)};
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for (size_t i = 1; i < cache.matches.size(); ++i)
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{
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const auto& matches = cache.matches[i];
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auto it = matches.find_next_begin(pos);
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if (it != matches.begin_matches.end() and
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(res.second == cache.matches[res.first].begin_matches.end() or
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it->begin_coord() < res.second->begin_coord()))
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res = RegionAndMatch{i, it};
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}
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return res;
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}
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const RegionList& get_regions_for_range(const Buffer& buffer, BufferRange range)
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{
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Cache& cache = m_cache.get(buffer);
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const size_t buf_timestamp = buffer.timestamp();
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if (cache.timestamp != buf_timestamp)
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{
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if (cache.timestamp == 0)
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{
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cache.matches.resize(m_regions.size());
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for (size_t i = 0; i < m_regions.size(); ++i)
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cache.matches[i] = m_regions.item(i).value->find_matches(buffer);
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}
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else
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{
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auto modifs = compute_line_modifications(buffer, cache.timestamp);
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for (size_t i = 0; i < m_regions.size(); ++i)
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m_regions.item(i).value->update_matches(buffer, modifs, cache.matches[i]);
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}
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cache.regions.clear();
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}
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auto it = cache.regions.find(range);
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if (it != cache.regions.end())
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return it->value;
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RegionList& regions = cache.regions[range];
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for (auto begin = find_next_begin(cache, range.begin),
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end = RegionAndMatch{ 0, cache.matches[0].begin_matches.end() };
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begin != end; )
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{
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const RegionMatches& matches = cache.matches[begin.first];
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auto& region = m_regions.item(begin.first);
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auto beg_it = begin.second;
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auto end_it = matches.find_matching_end(beg_it->end_coord(),
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region.value->match_capture() ? beg_it->capture : Optional<StringView>{});
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if (end_it == matches.end_matches.end() or end_it->end_coord() >= range.end)
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{
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regions.push_back({ {beg_it->line, beg_it->begin},
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range.end,
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region.key });
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break;
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}
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else
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{
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regions.push_back({ beg_it->begin_coord(),
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end_it->end_coord(),
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region.key });
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auto end_coord = end_it->end_coord();
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// With empty begin and end matches (for example if the regexes
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// are /"\K/ and /(?=")/), that case can happen, and would
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// result in an infinite loop.
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if (end_coord == beg_it->begin_coord())
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{
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kak_assert(beg_it->begin_coord() == beg_it->end_coord() and
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end_it->begin_coord() == end_it->end_coord());
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++end_coord.column;
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}
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begin = find_next_begin(cache, end_coord);
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}
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}
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cache.timestamp = buf_timestamp;
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return regions;
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}
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};
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void setup_builtin_highlighters(HighlighterGroup& group)
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