648 lines
22 KiB
C++
648 lines
22 KiB
C++
#include "insert_completer.hh"
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#include "buffer_manager.hh"
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#include "buffer_utils.hh"
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#include "client.hh"
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#include "command_manager.hh"
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#include "changes.hh"
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#include "context.hh"
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#include "display_buffer.hh"
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#include "face_registry.hh"
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#include "file.hh"
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#include "regex.hh"
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#include "window.hh"
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#include "word_db.hh"
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#include "option_types.hh"
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#include "utf8_iterator.hh"
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#include "user_interface.hh"
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#include <numeric>
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#include <utility>
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namespace Kakoune
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{
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using StringList = Vector<String, MemoryDomain::Options>;
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String option_to_string(const InsertCompleterDesc& opt)
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{
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switch (opt.mode)
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{
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case InsertCompleterDesc::Word:
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return "word=" + (opt.param ? *opt.param : "");
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case InsertCompleterDesc::Filename:
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return "filename";
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case InsertCompleterDesc::Option:
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return "option=" + (opt.param ? *opt.param : "");
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case InsertCompleterDesc::Line:
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return "line=" + (opt.param ? *opt.param : "");
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}
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kak_assert(false);
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return "";
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}
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InsertCompleterDesc option_from_string(Meta::Type<InsertCompleterDesc>, StringView str)
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{
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if (str.substr(0_byte, 7_byte) == "option=")
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return {InsertCompleterDesc::Option, str.substr(7_byte).str()};
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else if (str.substr(0_byte, 5_byte) == "word=")
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{
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auto param = str.substr(5_byte);
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if (param == "all" or param == "buffer")
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return {InsertCompleterDesc::Word, param.str()};
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}
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else if (str == "filename")
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return {InsertCompleterDesc::Filename, {}};
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else if (str.substr(0_byte, 5_byte) == "line=")
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{
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auto param = str.substr(5_byte);
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if (param == "all" or param == "buffer")
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return {InsertCompleterDesc::Line, param.str()};
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}
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throw runtime_error(format("invalid completer description: '{}'", str));
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}
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namespace
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{
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template<bool other_buffers>
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InsertCompletion complete_word(const SelectionList& sels,
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const OptionManager& options,
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const FaceRegistry& faces)
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{
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ConstArrayView<Codepoint> extra_word_chars = options["extra_word_chars"].get<Vector<Codepoint, MemoryDomain::Options>>();
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auto is_word_pred = [extra_word_chars](Codepoint c) { return is_word(c, extra_word_chars); };
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const Buffer& buffer = sels.buffer();
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BufferCoord cursor_pos = sels.main().cursor();
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using Utf8It = utf8::iterator<BufferIterator>;
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Utf8It pos{buffer.iterator_at(cursor_pos), buffer};
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if (pos == buffer.begin() or not is_word_pred(*(pos-1)))
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return {};
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BufferCoord word_begin;
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StringView prefix;
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HashMap<StringView, int> sel_word_counts;
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for (int i = 0; i < sels.size(); ++i)
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{
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int len = 0;
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auto is_short_enough_word = [&] (Codepoint c) { return len++ < WordDB::max_word_len && is_word_pred(c); };
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Utf8It end{buffer.iterator_at(sels[i].cursor()), buffer};
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Utf8It begin = end-1;
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if (not skip_while_reverse(begin, buffer.begin(), is_short_enough_word) and
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begin < end) // (begin might == end if end == buffer.begin())
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++begin;
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if (i == sels.main_index())
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{
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word_begin = begin.base().coord();
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prefix = buffer.substr(word_begin, end.base().coord());
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}
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skip_while(end, buffer.end(), is_short_enough_word);
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if (len <= WordDB::max_word_len)
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{
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StringView word = buffer.substr(begin.base().coord(), end.base().coord());
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++sel_word_counts[word];
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}
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}
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struct RankedMatchAndBuffer : RankedMatch
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{
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RankedMatchAndBuffer(RankedMatch m, const Buffer* b)
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: RankedMatch{std::move(m)}, buffer{b} {}
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using RankedMatch::operator==;
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using RankedMatch::operator<;
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bool operator==(StringView other) const { return candidate() == other; }
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const Buffer* buffer;
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};
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auto& word_db = get_word_db(buffer);
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Vector<RankedMatchAndBuffer> matches = word_db.find_matching(prefix)
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| transform([&](auto& m) { return RankedMatchAndBuffer{m, &buffer}; })
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| gather<Vector>();
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// Remove words that are being edited
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for (auto& word_count : sel_word_counts)
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{
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if (word_db.get_word_occurences(word_count.key) <= word_count.value)
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unordered_erase(matches, word_count.key);
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}
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if (other_buffers)
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{
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for (const auto& buf : BufferManager::instance())
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{
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if (buf.get() == &buffer or buf->flags() & Buffer::Flags::Debug)
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continue;
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for (auto& m : get_word_db(*buf).find_matching(prefix) |
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// filter out words that are not considered words for the current buffer
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filter([&](auto& rm) {
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auto&& c = rm.candidate();
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return std::all_of(utf8::iterator{c.begin(), c},
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utf8::iterator{c.end(), c},
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is_word_pred); }))
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matches.push_back({ m, buf.get() });
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}
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}
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using StaticWords = Vector<String, MemoryDomain::Options>;
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for (auto& word : options["static_words"].get<StaticWords>())
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if (RankedMatch match{word, prefix})
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matches.emplace_back(match, nullptr);
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unordered_erase(matches, prefix);
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const auto longest = accumulate(matches, 0_char,
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[](const CharCount& lhs, const RankedMatchAndBuffer& rhs)
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{ return std::max(lhs, rhs.candidate().char_length()); });
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auto limit = [](StringView s, ColumnCount l) { return s.column_length() <= l ? s.str() : "…" + s.substr(s.column_length() - (l + 1)); };
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constexpr size_t max_count = 100;
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// Gather best max_count matches
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InsertCompletion::CandidateList candidates;
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candidates.reserve(std::min(matches.size(), max_count));
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for_n_best(matches, max_count, [](auto& lhs, auto& rhs) { return rhs < lhs; },
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[&](RankedMatchAndBuffer& m) {
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if (not candidates.empty() and candidates.back().completion == m.candidate())
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return false;
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DisplayLine menu_entry;
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if (other_buffers && m.buffer)
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{
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const auto pad_len = longest + 1 - m.candidate().char_length();
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menu_entry.push_back({ m.candidate().str(), {} });
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menu_entry.push_back({ String{' ', pad_len}, {} });
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menu_entry.push_back({ limit(m.buffer->display_name(), 20), faces["MenuInfo"] });
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}
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else
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menu_entry.push_back({ m.candidate().str(), {} });
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candidates.push_back({m.candidate().str(), "", std::move(menu_entry)});
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return true;
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});
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return { std::move(candidates), word_begin, cursor_pos, buffer.timestamp() };
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}
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template<bool require_slash>
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InsertCompletion complete_filename(const SelectionList& sels,
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const OptionManager& options,
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const FaceRegistry&)
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{
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const Buffer& buffer = sels.buffer();
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auto pos = buffer.iterator_at(sels.main().cursor());
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auto begin = pos;
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auto is_filename = [](char c)
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{
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return isalnum(c) or c == '/' or c == '.' or c == '_' or c == '-';
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};
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while (begin != buffer.begin() and is_filename(*(begin-1)))
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--begin;
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if (begin != buffer.begin() and *begin == '/' and *(begin-1) == '~')
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--begin;
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StringView prefix = buffer.substr(begin.coord(), pos.coord());
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if (require_slash and not contains(prefix, '/'))
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return {};
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// Do not try to complete in that case as its unlikely to be a filename,
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// and triggers network host search of cygwin.
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if (prefix.substr(0_byte, 2_byte) == "//")
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return {};
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InsertCompletion::CandidateList candidates;
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if (prefix.front() == '/' or prefix.front() == '~')
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{
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for (auto& filename : Kakoune::complete_filename(prefix,
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options["ignored_files"].get<Regex>()))
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candidates.push_back({ filename, "", {filename, {}} });
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}
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else
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{
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Vector<String> visited_dirs;
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for (auto dir : options["path"].get<StringList>())
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{
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dir = real_path(parse_filename(dir, (buffer.flags() & Buffer::Flags::File) ?
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split_path(buffer.name()).first : StringView{}));
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if (not dir.empty() and dir.back() != '/')
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dir += '/';
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if (contains(visited_dirs, dir))
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continue;
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for (auto& filename : Kakoune::complete_filename(dir + prefix,
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options["ignored_files"].get<Regex>()))
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{
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StringView candidate = filename.substr(dir.length());
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candidates.push_back({ candidate.str(), "", {candidate.str(), {}} });
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}
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visited_dirs.push_back(std::move(dir));
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}
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}
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if (candidates.empty())
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return {};
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return { std::move(candidates), begin.coord(), pos.coord(), buffer.timestamp() };
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}
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InsertCompletion complete_option(const SelectionList& sels,
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const OptionManager& options,
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const FaceRegistry& faces,
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StringView option_name)
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{
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const Buffer& buffer = sels.buffer();
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BufferCoord cursor_pos = sels.main().cursor();
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const CompletionList& opt = options[option_name].get<CompletionList>();
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if (opt.list.empty())
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return {};
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auto& desc = opt.prefix;
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static const Regex re(R"((\d+)\.(\d+)(?:\+(\d+))?@(\d+))");
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MatchResults<String::const_iterator> match;
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if (not regex_match(desc.begin(), desc.end(), match, re))
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return {};
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BufferCoord coord{str_to_int({match[1].first, match[1].second}) - 1,
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str_to_int({match[2].first, match[2].second}) - 1};
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if (not buffer.is_valid(coord))
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return {};
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size_t timestamp = (size_t)str_to_int({match[4].first, match[4].second});
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auto changes = buffer.changes_since(timestamp);
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if (any_of(changes, [&](auto&& change) { return change.begin < coord; }))
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return {};
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if (cursor_pos.line != coord.line or cursor_pos.column < coord.column)
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return {};
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const ColumnCount tabstop = options["tabstop"].get<int>();
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const ColumnCount column = get_column(buffer, tabstop, cursor_pos);
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struct RankedMatchAndInfo : RankedMatch
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{
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using RankedMatch::RankedMatch;
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using RankedMatch::operator==;
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using RankedMatch::operator<;
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StringView on_select;
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DisplayLine menu_entry;
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};
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StringView query = buffer.substr(coord, cursor_pos);
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Vector<RankedMatchAndInfo> matches;
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for (auto& candidate : opt.list)
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{
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if (RankedMatchAndInfo match{std::get<0>(candidate), query})
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{
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match.on_select = std::get<1>(candidate);
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auto& menu = std::get<2>(candidate);
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match.menu_entry = not menu.empty() ?
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parse_display_line(expand_tabs(menu, tabstop, column), faces)
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: DisplayLine{String{}, {}};
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matches.push_back(std::move(match));
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}
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}
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constexpr size_t max_count = 100;
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// Gather best max_count matches
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auto greater = [](auto& lhs, auto& rhs) { return rhs < lhs; };
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auto first = matches.begin(), last = matches.end();
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std::make_heap(first, last, greater);
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InsertCompletion::CandidateList candidates;
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candidates.reserve(std::min(matches.size(), max_count));
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candidates.reserve(matches.size());
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while (candidates.size() < max_count and first != last)
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{
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if (candidates.empty() or candidates.back().completion != first->candidate()
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or candidates.back().on_select != first->on_select)
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candidates.push_back({ first->candidate().str(), first->on_select.str(),
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std::move(first->menu_entry) });
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std::pop_heap(first, last--, greater);
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}
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auto end = cursor_pos;
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if (match[3].matched)
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{
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ByteCount len = str_to_int({match[3].first, match[3].second});
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end = buffer.advance(coord, len);
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}
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return { std::move(candidates), coord, end, timestamp };
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}
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template<bool other_buffers>
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InsertCompletion complete_line(const SelectionList& sels,
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const OptionManager& options,
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const FaceRegistry&)
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{
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const Buffer& buffer = sels.buffer();
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BufferCoord cursor_pos = sels.main().cursor();
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const ColumnCount tabstop = options["tabstop"].get<int>();
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const ColumnCount column = get_column(buffer, tabstop, cursor_pos);
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auto trim_leading_whitespaces = [](StringView s) {
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utf8::iterator it{s.begin(), s};
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while (it != s.end() and is_horizontal_blank(*it))
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++it;
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return StringView{it.base(), s.end()};
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};
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StringView prefix = trim_leading_whitespaces(buffer[cursor_pos.line].substr(0_byte, cursor_pos.column));
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BufferCoord replace_begin = buffer.advance(cursor_pos, -prefix.length());
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InsertCompletion::CandidateList candidates;
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auto add_candidates = [&](const Buffer& buf) {
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for (LineCount l = 0_line; l < buf.line_count(); ++l)
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{
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if (buf.name() == buffer.name() && l == cursor_pos.line)
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continue;
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StringView line = buf[l];
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StringView candidate = trim_leading_whitespaces(line.substr(0_byte, line.length()-1));
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if (candidate.length() == 0)
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continue;
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if (prefix == candidate.substr(0_byte, prefix.length()))
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{
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candidates.push_back({candidate.str(), "", {expand_tabs(candidate, tabstop, column), {}} });
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// perf: it's unlikely the user intends to search among >10 candidates anyway
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if (candidates.size() == 100)
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break;
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}
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}
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};
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add_candidates(buffer);
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if (other_buffers)
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{
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for (const auto& buf : BufferManager::instance())
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{
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if (buf.get() != &buffer and not (buf->flags() & Buffer::Flags::Debug))
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add_candidates(*buf);
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}
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}
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if (candidates.empty())
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return {};
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std::sort(candidates.begin(), candidates.end());
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candidates.erase(std::unique(candidates.begin(), candidates.end()), candidates.end());
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return { std::move(candidates), replace_begin, cursor_pos, buffer.timestamp() };
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}
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}
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InsertCompleter::InsertCompleter(Context& context)
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: m_context(context), m_options(context.options()), m_faces(context.faces())
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{
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m_options.register_watcher(*this);
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}
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InsertCompleter::~InsertCompleter()
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{
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m_options.unregister_watcher(*this);
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}
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void InsertCompleter::select(int index, bool relative, Vector<Key>& keystrokes)
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{
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m_enabled = true;
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if (not setup_ifn())
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return;
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auto& buffer = m_context.buffer();
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m_current_candidate = (relative ? m_current_candidate + index : index) % (int)m_completions.candidates.size();
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if (m_current_candidate < 0)
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m_current_candidate += m_completions.candidates.size();
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const InsertCompletion::Candidate& candidate = m_completions.candidates[m_current_candidate];
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auto& selections = m_context.selections();
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const auto& cursor_pos = selections.main().cursor();
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const auto prefix_len = buffer.distance(m_completions.begin, cursor_pos);
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const auto suffix_len = std::max(0_byte, buffer.distance(cursor_pos, m_completions.end));
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auto ref = buffer.string(m_completions.begin, m_completions.end);
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Vector<BufferRange> ranges;
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for (auto& sel : selections)
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{
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auto pos = buffer.iterator_at(sel.cursor());
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if (pos.coord().column >= prefix_len and (pos + suffix_len) != buffer.end() and std::equal(ref.begin(), ref.end(), pos - prefix_len))
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ranges.push_back({(pos - prefix_len).coord(), (pos + suffix_len).coord()});
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}
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replace(buffer, ranges, candidate.completion);
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selections.update();
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m_completions.end = cursor_pos;
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m_completions.begin = buffer.advance(cursor_pos, -candidate.completion.length());
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m_completions.timestamp = buffer.timestamp();
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m_inserted_ranges = std::move(ranges);
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if (m_context.has_client())
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{
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m_context.client().menu_select(m_current_candidate);
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}
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for (auto i = 0_byte; i < prefix_len; ++i)
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keystrokes.emplace_back(Key::Backspace);
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for (auto i = 0_byte; i < suffix_len; ++i)
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keystrokes.emplace_back(Key::Delete);
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for (auto& c : candidate.completion)
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keystrokes.emplace_back(c);
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if (not candidate.on_select.empty())
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CommandManager::instance().execute(candidate.on_select, m_context);
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}
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void InsertCompleter::update(bool allow_implicit)
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{
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m_enabled = allow_implicit;
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if (m_explicit_completer and try_complete(m_explicit_completer))
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return;
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reset();
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setup_ifn();
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}
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auto& get_first(BufferRange& range) { return range.begin; }
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auto& get_last(BufferRange& range) { return range.end; }
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bool InsertCompleter::has_candidate_selected() const
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{
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return m_current_candidate >= 0 and m_current_candidate < m_completions.candidates.size() - 1;
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}
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void InsertCompleter::try_accept()
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{
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if (m_completions.is_valid() and has_candidate_selected())
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reset();
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}
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void InsertCompleter::reset()
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{
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if (not m_explicit_completer and not m_completions.is_valid())
|
|
return;
|
|
|
|
String hook_param;
|
|
if (m_context.has_client() and has_candidate_selected())
|
|
{
|
|
auto& buffer = m_context.buffer();
|
|
update_ranges(buffer, m_completions.timestamp, m_inserted_ranges);
|
|
m_completions.timestamp = buffer.timestamp();
|
|
|
|
hook_param = join(m_inserted_ranges | filter([](auto&& r) { return not r.empty(); }) | transform([&](auto&& r) {
|
|
return selection_to_string(ColumnType::Byte, buffer, {r.begin, buffer.char_prev(r.end)});
|
|
}), ' ');
|
|
}
|
|
|
|
m_explicit_completer = nullptr;
|
|
m_completions = InsertCompletion{};
|
|
m_inserted_ranges.clear();
|
|
if (m_context.has_client())
|
|
{
|
|
m_context.client().menu_hide();
|
|
m_context.client().info_hide();
|
|
m_context.hooks().run_hook(Hook::InsertCompletionHide, hook_param, m_context);
|
|
}
|
|
}
|
|
|
|
bool InsertCompleter::setup_ifn()
|
|
{
|
|
if (!m_enabled)
|
|
return false;
|
|
using namespace std::placeholders;
|
|
if (not m_completions.is_valid())
|
|
{
|
|
auto& completers = m_options["completers"].get<InsertCompleterDescList>();
|
|
for (auto& completer : completers)
|
|
{
|
|
if (completer.mode == InsertCompleterDesc::Filename and
|
|
try_complete(complete_filename<true>))
|
|
return true;
|
|
if (completer.mode == InsertCompleterDesc::Option and
|
|
try_complete([&](const SelectionList& sels,
|
|
const OptionManager& options,
|
|
const FaceRegistry& faces) {
|
|
return complete_option(sels, options, faces, *completer.param);
|
|
}))
|
|
return true;
|
|
if (completer.mode == InsertCompleterDesc::Word and
|
|
*completer.param == "buffer" and
|
|
try_complete(complete_word<false>))
|
|
return true;
|
|
if (completer.mode == InsertCompleterDesc::Word and
|
|
*completer.param == "all" and
|
|
try_complete(complete_word<true>))
|
|
return true;
|
|
if (completer.mode == InsertCompleterDesc::Line and
|
|
*completer.param == "buffer" and
|
|
try_complete(complete_line<false>))
|
|
return true;
|
|
if (completer.mode == InsertCompleterDesc::Line and
|
|
*completer.param == "all" and
|
|
try_complete(complete_line<true>))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void InsertCompleter::menu_show()
|
|
{
|
|
if (not m_context.has_client())
|
|
return;
|
|
|
|
Vector<DisplayLine> menu_entries;
|
|
for (auto& candidate : m_completions.candidates)
|
|
menu_entries.push_back(candidate.menu_entry);
|
|
|
|
m_context.client().menu_show(std::move(menu_entries), m_completions.begin,
|
|
MenuStyle::Inline);
|
|
m_context.client().menu_select(m_current_candidate);
|
|
m_context.hooks().run_hook(Hook::InsertCompletionShow, "", m_context);
|
|
}
|
|
|
|
void InsertCompleter::on_option_changed(const Option& opt)
|
|
{
|
|
// Do not reset the menu if the user has selected an entry
|
|
if (not m_completions.candidates.empty() and
|
|
m_current_candidate != m_completions.candidates.size() - 1)
|
|
return;
|
|
|
|
const auto& completers = m_options["completers"].get<InsertCompleterDescList>();
|
|
for (auto& completer : completers)
|
|
{
|
|
if (completer.mode == InsertCompleterDesc::Option and
|
|
*completer.param == opt.name())
|
|
{
|
|
reset();
|
|
setup_ifn();
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
template<typename Func>
|
|
bool InsertCompleter::try_complete(Func complete_func)
|
|
{
|
|
auto& sels = m_context.selections();
|
|
try
|
|
{
|
|
reset();
|
|
m_completions = complete_func(sels, m_options, m_faces);
|
|
}
|
|
catch (runtime_error& e)
|
|
{
|
|
write_to_debug_buffer(format("error while trying to run completer: {}", e.what()));
|
|
return false;
|
|
}
|
|
if (not m_completions.is_valid())
|
|
return false;
|
|
|
|
kak_assert(m_completions.begin <= sels.main().cursor());
|
|
m_current_candidate = m_completions.candidates.size();
|
|
menu_show();
|
|
m_completions.candidates.push_back({sels.buffer().string(m_completions.begin, m_completions.end), "", {}});
|
|
return true;
|
|
}
|
|
|
|
void InsertCompleter::explicit_file_complete()
|
|
{
|
|
try_complete(complete_filename<false>);
|
|
m_explicit_completer = complete_filename<false>;
|
|
}
|
|
|
|
void InsertCompleter::explicit_word_buffer_complete()
|
|
{
|
|
try_complete(complete_word<false>);
|
|
m_explicit_completer = complete_word<false>;
|
|
}
|
|
|
|
void InsertCompleter::explicit_word_all_complete()
|
|
{
|
|
try_complete(complete_word<true>);
|
|
m_explicit_completer = complete_word<true>;
|
|
}
|
|
|
|
void InsertCompleter::explicit_line_buffer_complete()
|
|
{
|
|
try_complete(complete_line<false>);
|
|
m_explicit_completer = complete_line<false>;
|
|
}
|
|
|
|
void InsertCompleter::explicit_line_all_complete()
|
|
{
|
|
try_complete(complete_line<true>);
|
|
m_explicit_completer = complete_line<true>;
|
|
}
|
|
|
|
}
|