64 lines
1.4 KiB
C++
64 lines
1.4 KiB
C++
#ifndef word_db_hh_INCLUDED
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#define word_db_hh_INCLUDED
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#include "buffer.hh"
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#include "shared_string.hh"
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#include "unordered_map.hh"
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#include "vector.hh"
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#include <bitset>
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namespace Kakoune
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{
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using UsedLetters = std::bitset<64>;
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UsedLetters used_letters(StringView str);
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// maintain a database of words available in a buffer
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class WordDB
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{
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public:
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WordDB(const Buffer& buffer);
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WordDB(const WordDB&) = delete;
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WordDB(WordDB&&) = default;
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using WordList = Vector<StringView>;
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template<typename MatchFunc>
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WordList find_matching(StringView str, MatchFunc match)
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{
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update_db();
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const UsedLetters letters = used_letters(str);
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WordList res;
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for (auto&& word : m_words)
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{
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if ((letters & word.second.letters) == letters and
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match(word.first, str))
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res.push_back(word.first);
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}
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return res;
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}
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int get_word_occurences(StringView word) const;
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private:
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void update_db();
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void add_words(const SharedString& line);
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void remove_words(const SharedString& line);
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struct WordInfo
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{
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UsedLetters letters;
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int refcount;
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};
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using WordToInfo = UnorderedMap<SharedString, WordInfo, MemoryDomain::WordDB>;
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using Lines = Vector<StringDataPtr, MemoryDomain::WordDB>;
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SafePtr<const Buffer> m_buffer;
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size_t m_timestamp;
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WordToInfo m_words;
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Lines m_lines;
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};
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}
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#endif // word_db_hh_INCLUDED
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