1046 lines
36 KiB
C++
1046 lines
36 KiB
C++
#include "selectors.hh"
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#include "buffer_utils.hh"
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#include "context.hh"
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#include "event_manager.hh"
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#include "flags.hh"
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#include "option_types.hh"
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#include "regex.hh"
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#include "selection.hh"
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#include "string.hh"
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#include "unit_tests.hh"
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#include "utf8_iterator.hh"
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#include <algorithm>
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namespace Kakoune
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{
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using Utf8Iterator = utf8::iterator<BufferIterator>;
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namespace
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{
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Selection utf8_range(const BufferIterator& first, const BufferIterator& last)
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{
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return {first.coord(), last.coord()};
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}
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Selection utf8_range(const Utf8Iterator& first, const Utf8Iterator& last)
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{
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return {first.base().coord(), last.base().coord()};
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}
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ConstArrayView<Codepoint> get_extra_word_chars(const Context& context)
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{
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return context.options()["extra_word_chars"].get<Vector<Codepoint, MemoryDomain::Options>>();
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}
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}
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Selection keep_direction(Selection res, const Selection& ref)
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{
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if ((res.cursor() < res.anchor()) != (ref.cursor() < ref.anchor()))
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std::swap<BufferCoord>(res.cursor(), res.anchor());
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return res;
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}
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template<WordType word_type>
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Optional<Selection>
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select_to_next_word(const Context& context, const Selection& selection)
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{
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auto extra_word_chars = get_extra_word_chars(context);
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auto& buffer = context.buffer();
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Utf8Iterator begin{buffer.iterator_at(selection.cursor()), buffer};
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if (begin+1 == buffer.end())
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return {};
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if (categorize<word_type>(*begin, extra_word_chars) !=
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categorize<word_type>(*(begin+1), extra_word_chars))
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++begin;
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if (not skip_while(begin, buffer.end(),
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[](Codepoint c) { return is_eol(c); }))
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return {};
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Utf8Iterator end = begin+1;
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auto is_word = [&](Codepoint c) { return Kakoune::is_word<word_type>(c, extra_word_chars); };
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auto is_punctuation = [&](Codepoint c) { return Kakoune::is_punctuation(c, extra_word_chars); };
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if (is_word(*begin))
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skip_while(end, buffer.end(), is_word);
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else if (is_punctuation(*begin))
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skip_while(end, buffer.end(), is_punctuation);
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skip_while(end, buffer.end(), is_horizontal_blank);
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return utf8_range(begin, end-1);
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}
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template Optional<Selection> select_to_next_word<WordType::Word>(const Context&, const Selection&);
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template Optional<Selection> select_to_next_word<WordType::WORD>(const Context&, const Selection&);
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template<WordType word_type>
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Optional<Selection>
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select_to_next_word_end(const Context& context, const Selection& selection)
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{
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auto extra_word_chars = get_extra_word_chars(context);
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auto& buffer = context.buffer();
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Utf8Iterator begin{buffer.iterator_at(selection.cursor()), buffer};
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if (begin+1 == buffer.end())
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return {};
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if (categorize<word_type>(*begin, extra_word_chars) !=
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categorize<word_type>(*(begin+1), extra_word_chars))
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++begin;
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if (not skip_while(begin, buffer.end(),
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[](Codepoint c) { return is_eol(c); }))
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return {};
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Utf8Iterator end = begin;
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skip_while(end, buffer.end(), is_horizontal_blank);
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auto is_word = [&](Codepoint c) { return Kakoune::is_word<word_type>(c, extra_word_chars); };
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auto is_punctuation = [&](Codepoint c) { return Kakoune::is_punctuation(c, extra_word_chars); };
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if (is_word(*end))
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skip_while(end, buffer.end(), is_word);
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else if (is_punctuation(*end))
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skip_while(end, buffer.end(), is_punctuation);
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return utf8_range(begin, end-1);
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}
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template Optional<Selection> select_to_next_word_end<WordType::Word>(const Context&, const Selection&);
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template Optional<Selection> select_to_next_word_end<WordType::WORD>(const Context&, const Selection&);
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template<WordType word_type>
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Optional<Selection>
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select_to_previous_word(const Context& context, const Selection& selection)
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{
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auto extra_word_chars = get_extra_word_chars(context);
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auto& buffer = context.buffer();
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Utf8Iterator begin{buffer.iterator_at(selection.cursor()), buffer};
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if (begin == buffer.begin())
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return {};
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if (categorize<word_type>(*begin, extra_word_chars) !=
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categorize<word_type>(*(begin-1), extra_word_chars))
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--begin;
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skip_while_reverse(begin, buffer.begin(), [](Codepoint c){ return is_eol(c); });
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Utf8Iterator end = begin;
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auto is_word = [&](Codepoint c) { return Kakoune::is_word<word_type>(c, extra_word_chars); };
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auto is_punctuation = [&](Codepoint c) { return Kakoune::is_punctuation(c, extra_word_chars); };
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bool with_end = skip_while_reverse(end, buffer.begin(), is_horizontal_blank);
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if (is_word(*end))
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with_end = skip_while_reverse(end, buffer.begin(), is_word);
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else if (is_punctuation(*end))
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with_end = skip_while_reverse(end, buffer.begin(), is_punctuation);
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return utf8_range(begin, with_end ? end : end+1);
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}
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template Optional<Selection> select_to_previous_word<WordType::Word>(const Context&, const Selection&);
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template Optional<Selection> select_to_previous_word<WordType::WORD>(const Context&, const Selection&);
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template<WordType word_type>
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Optional<Selection>
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select_word(const Context& context, const Selection& selection,
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int count, ObjectFlags flags)
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{
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auto extra_word_chars = get_extra_word_chars(context);
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auto& buffer = context.buffer();
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auto is_word = [&](Codepoint c) { return Kakoune::is_word<word_type>(c, extra_word_chars); };
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Utf8Iterator first{buffer.iterator_at(selection.cursor()), buffer};
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if (not is_word(*first))
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return {};
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Utf8Iterator last = first;
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if (flags & ObjectFlags::ToBegin)
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{
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skip_while_reverse(first, buffer.begin(), is_word);
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if (not is_word(*first))
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++first;
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}
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if (flags & ObjectFlags::ToEnd)
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{
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skip_while(last, buffer.end(), is_word);
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if (not (flags & ObjectFlags::Inner))
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skip_while(last, buffer.end(), is_horizontal_blank);
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--last;
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}
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return (flags & ObjectFlags::ToEnd) ? utf8_range(first, last)
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: utf8_range(last, first);
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}
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template Optional<Selection> select_word<WordType::Word>(const Context&, const Selection&, int, ObjectFlags);
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template Optional<Selection> select_word<WordType::WORD>(const Context&, const Selection&, int, ObjectFlags);
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template<bool only_move>
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Optional<Selection>
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select_to_line_end(const Context& context, const Selection& selection)
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{
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auto& buffer = context.buffer();
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BufferCoord begin = selection.cursor();
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LineCount line = begin.line;
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BufferCoord end = utf8::previous(buffer.iterator_at({line, buffer[line].length() - 1}),
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buffer.iterator_at(line)).coord();
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if (end < begin) // Do not go backward when cursor is on eol
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end = begin;
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return Selection{only_move ? end : begin, {end, max_non_eol_column}};
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}
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template Optional<Selection> select_to_line_end<false>(const Context&, const Selection&);
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template Optional<Selection> select_to_line_end<true>(const Context&, const Selection&);
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template<bool only_move>
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Optional<Selection>
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select_to_line_begin(const Context&, const Selection& selection)
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{
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BufferCoord begin = selection.cursor();
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BufferCoord end = begin.line;
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return Selection{only_move ? end : begin, end};
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}
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template Optional<Selection> select_to_line_begin<false>(const Context&, const Selection&);
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template Optional<Selection> select_to_line_begin<true>(const Context&, const Selection&);
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Optional<Selection>
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select_to_first_non_blank(const Context& context, const Selection& selection)
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{
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auto& buffer = context.buffer();
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auto it = buffer.iterator_at(selection.cursor().line);
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skip_while(it, buffer.iterator_at(selection.cursor().line+1),
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is_horizontal_blank);
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return {it.coord()};
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}
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template<bool forward>
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Optional<Selection>
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select_matching(const Context& context, const Selection& selection)
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{
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auto& buffer = context.buffer();
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auto& matching_pairs = context.options()["matching_pairs"].get<Vector<Codepoint, MemoryDomain::Options>>();
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Utf8Iterator it{buffer.iterator_at(selection.cursor()), buffer};
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auto match = matching_pairs.end();
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if (forward) while (it != buffer.end())
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{
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match = find(matching_pairs, *it);
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if (match != matching_pairs.end())
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break;
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++it;
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}
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else while (true)
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{
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match = find(matching_pairs, *it);
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if (match != matching_pairs.end()
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or it == buffer.begin())
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break;
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--it;
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}
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if (match == matching_pairs.end())
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return {};
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Utf8Iterator begin = it;
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if (((match - matching_pairs.begin()) % 2) == 0)
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{
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int level = 0;
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const Codepoint opening = *match;
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const Codepoint closing = *(match+1);
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while (it != buffer.end())
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{
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if (*it == opening)
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++level;
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else if (*it == closing and --level == 0)
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return utf8_range(begin, it);
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++it;
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}
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}
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else
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{
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int level = 0;
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const Codepoint opening = *(match-1);
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const Codepoint closing = *match;
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while (true)
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{
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if (*it == closing)
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++level;
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else if (*it == opening and --level == 0)
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return utf8_range(begin, it);
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if (it == buffer.begin())
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break;
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--it;
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}
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}
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return {};
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}
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template Optional<Selection>
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select_matching<true>(const Context& context, const Selection& selection);
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template Optional<Selection>
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select_matching<false>(const Context& context, const Selection& selection);
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template<typename Iterator, typename Container>
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Optional<std::pair<Iterator, Iterator>>
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find_opening(Iterator pos, const Container& container,
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const Regex& opening, const Regex& closing,
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int level, bool nestable)
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{
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MatchResults<Iterator> res;
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// When on the token of a non-nestable block, we want to consider it opening
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if (nestable and
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backward_regex_search(container.begin(), pos,
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container.begin(), container.end(), res, closing,
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RegexExecFlags::None, EventManager::handle_urgent_events) and
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res[0].second == pos)
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pos = res[0].first;
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using RegexIt = RegexIterator<Iterator, RegexMode::Backward, const Regex, void (*)()>;
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for (auto&& match : RegexIt{container.begin(), pos, container.begin(), container.end(), opening,
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RegexExecFlags::None, EventManager::handle_urgent_events})
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{
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if (nestable)
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{
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for (auto m [[maybe_unused]] : RegexIt{match[0].second, pos, container.begin(), container.end(), closing,
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RegexExecFlags::None, EventManager::handle_urgent_events})
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++level;
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}
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if (not nestable or level == 0)
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return match[0];
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pos = match[0].first;
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--level;
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}
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return {};
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}
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template<typename Iterator, typename Container>
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Optional<std::pair<Iterator, Iterator>>
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find_closing(Iterator pos, const Container& container,
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const Regex& opening, const Regex& closing,
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int level, bool nestable)
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{
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for (auto match : RegexIterator{pos, container.end(), container.begin(), container.end(), closing,
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RegexExecFlags::None, EventManager::handle_urgent_events})
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{
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if (nestable)
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{
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for (auto m [[maybe_unused]] : RegexIterator{pos, match[0].first, container.begin(), container.end(), opening,
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RegexExecFlags::None, EventManager::handle_urgent_events})
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++level;
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}
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if (not nestable or level == 0)
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return match[0];
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pos = match[0].second;
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--level;
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}
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return {};
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}
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template<typename Container, typename Iterator>
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Optional<std::pair<Iterator, Iterator>>
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find_surrounding(const Container& container, Iterator pos,
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const Regex& opening, const Regex& closing,
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ObjectFlags flags, int level)
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{
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auto empty = [](const std::pair<Iterator, Iterator>& m) { return m.first == m.second; };
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const bool nestable = opening != closing;
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auto first = pos;
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auto last = pos;
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if (flags & ObjectFlags::ToBegin)
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{
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if (auto res = find_opening(first+1, container, opening, closing, level, nestable))
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{
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first = (flags & ObjectFlags::Inner) ? res->second : res->first;
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if (flags & ObjectFlags::ToEnd) // ensure we find the matching end
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{
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last = empty(*res) ? std::next(res->second) : res->second;
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level = 0;
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}
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}
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else
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return {};
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}
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else if (MatchResults<Iterator> res;
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regex_search(pos, container.end(), container.begin(), container.end(), res, opening,
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RegexExecFlags::None, EventManager::handle_urgent_events) and
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res[0].first == pos) // Skip opening match if pos lies on it
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last = empty(res[0]) ? std::next(res[0].second) : res[0].second;
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if (flags & ObjectFlags::ToEnd)
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{
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if (auto res = find_closing(last, container, opening, closing, level, nestable))
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last = utf8::previous((flags & ObjectFlags::Inner) ? res->first : res->second,
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container.begin());
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else
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return {};
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}
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if (first > last)
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last = first;
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return std::pair<Iterator, Iterator>{first, last};
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}
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Optional<Selection>
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select_surrounding(const Context& context, const Selection& selection,
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const Regex& opening, const Regex& closing, int level,
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ObjectFlags flags)
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{
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auto& buffer = context.buffer();
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auto pos = buffer.iterator_at(selection.cursor());
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auto res = find_surrounding(buffer, pos, opening, closing, flags, level);
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// If the ends we're changing didn't move, find the parent
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if (res and not (flags & ObjectFlags::Inner) and
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(res->first.coord() == selection.min() or not (flags & ObjectFlags::ToBegin)) and
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(res->second.coord() == selection.max() or not (flags & ObjectFlags::ToEnd)))
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res = find_surrounding(buffer, pos, opening, closing, flags, level+1);
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if (res)
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return (flags & ObjectFlags::ToEnd) ? utf8_range(res->first, res->second)
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: utf8_range(res->second, res->first);
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return {};
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}
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Optional<Selection>
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select_to(const Context& context, const Selection& selection,
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Codepoint c, int count, bool inclusive)
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{
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auto& buffer = context.buffer();
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Utf8Iterator begin{buffer.iterator_at(selection.cursor()), buffer};
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Utf8Iterator end = begin;
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do
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{
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++end;
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skip_while(end, buffer.end(), [c](Codepoint cur) { return cur != c; });
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if (end == buffer.end())
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return {};
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}
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while (--count > 0);
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return utf8_range(begin, inclusive ? end : end-1);
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}
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Optional<Selection>
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select_to_reverse(const Context& context, const Selection& selection,
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Codepoint c, int count, bool inclusive)
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{
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auto& buffer = context.buffer();
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// if we are selecting backwards from the beginning of the buffer,
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// there is nothing more that can be selected.
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if (selection.cursor() == buffer.begin())
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return {};
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Utf8Iterator begin{buffer.iterator_at(selection.cursor()), buffer};
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Utf8Iterator end = begin;
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do
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{
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--end;
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if (skip_while_reverse(end, buffer.begin(),
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[c](Codepoint cur) { return cur != c; }))
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return {};
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}
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while (--count > 0);
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return utf8_range(begin, inclusive ? end : end+1);
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}
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Optional<Selection>
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select_number(const Context& context, const Selection& selection,
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int count, ObjectFlags flags)
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{
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auto is_number = [&](char c) {
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return (c >= '0' and c <= '9') or
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(not (flags & ObjectFlags::Inner) and c == '.');
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};
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auto& buffer = context.buffer();
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BufferIterator first = buffer.iterator_at(selection.cursor());
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BufferIterator last = first;
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if (not is_number(*first) and *first != '-')
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return {};
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if (flags & ObjectFlags::ToBegin)
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{
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skip_while_reverse(first, buffer.begin(), is_number);
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if (not is_number(*first) and *first != '-' and
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first+1 != buffer.end())
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++first;
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}
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if (flags & ObjectFlags::ToEnd)
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{
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if (*last == '-')
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++last;
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skip_while(last, buffer.end(), is_number);
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if (last != buffer.begin())
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--last;
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}
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return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
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: Selection{last.coord(), first.coord()};
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}
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Optional<Selection>
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select_sentence(const Context& context, const Selection& selection,
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int count, ObjectFlags flags)
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{
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auto is_end_of_sentence = [](char c) {
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return c == '.' or c == ';' or c == '!' or c == '?';
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};
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auto& buffer = context.buffer();
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BufferIterator first = buffer.iterator_at(selection.cursor());
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BufferIterator last;
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for (int i = 0; i <= count; ++i)
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{
|
|
if (not (flags & ObjectFlags::ToEnd) and first != buffer.begin())
|
|
{
|
|
BufferIterator prev_non_blank = first-1;
|
|
skip_while_reverse(prev_non_blank, buffer.begin(),
|
|
[](char c) { return is_horizontal_blank(c) or is_eol(c); });
|
|
if (is_end_of_sentence(*prev_non_blank))
|
|
first = prev_non_blank;
|
|
}
|
|
|
|
if (i == 0)
|
|
last = first;
|
|
|
|
if (flags & ObjectFlags::ToBegin)
|
|
{
|
|
bool saw_non_blank = false;
|
|
while (first != buffer.begin())
|
|
{
|
|
char cur = *first;
|
|
char prev = *(first-1);
|
|
if (not is_horizontal_blank(cur))
|
|
saw_non_blank = true;
|
|
if (is_eol(prev) and is_eol(cur) and first + 1 != buffer.end())
|
|
{
|
|
++first;
|
|
break;
|
|
}
|
|
else if (is_end_of_sentence(prev))
|
|
{
|
|
if (saw_non_blank)
|
|
break;
|
|
else if (flags & ObjectFlags::ToEnd)
|
|
last = first-1;
|
|
}
|
|
--first;
|
|
}
|
|
skip_while(first, buffer.end(), is_horizontal_blank);
|
|
}
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
while (last != buffer.end())
|
|
{
|
|
char cur = *last;
|
|
if (is_end_of_sentence(cur) or
|
|
(is_eol(cur) and (last+1 == buffer.end() or is_eol(*(last+1)))))
|
|
break;
|
|
++last;
|
|
}
|
|
if (not (flags & ObjectFlags::Inner) and last != buffer.end())
|
|
{
|
|
++last;
|
|
skip_while(last, buffer.end(), is_horizontal_blank);
|
|
--last;
|
|
}
|
|
}
|
|
}
|
|
return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
|
|
: Selection{last.coord(), first.coord()};
|
|
}
|
|
|
|
Optional<Selection>
|
|
select_paragraph(const Context& context, const Selection& selection,
|
|
int count, ObjectFlags flags)
|
|
{
|
|
auto& buffer = context.buffer();
|
|
BufferIterator first = buffer.iterator_at(selection.cursor());
|
|
BufferIterator last;
|
|
|
|
for (int i = 0; i <= count; ++i)
|
|
{
|
|
if (not (flags & ObjectFlags::ToEnd) and first.coord() > BufferCoord{0,1} and
|
|
is_eol(*(first-1)) and first-1 != buffer.begin() and is_eol(*(first-2)))
|
|
--first;
|
|
else if ((flags & ObjectFlags::ToEnd) and
|
|
first != buffer.begin() and (first+1) != buffer.end() and
|
|
is_eol(*(first-1)) and is_eol(*first))
|
|
++first;
|
|
if (i == 0)
|
|
last = first;
|
|
|
|
if ((flags & ObjectFlags::ToBegin) and first != buffer.begin())
|
|
{
|
|
skip_while_reverse(first, buffer.begin(),
|
|
[](Codepoint c){ return is_eol(c); });
|
|
if (flags & ObjectFlags::ToEnd)
|
|
last = first;
|
|
while (first != buffer.begin())
|
|
{
|
|
char cur = *first;
|
|
char prev = *(first-1);
|
|
if (is_eol(prev) and is_eol(cur))
|
|
{
|
|
++first;
|
|
break;
|
|
}
|
|
--first;
|
|
}
|
|
}
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
if (last != buffer.end() and is_eol(*last))
|
|
++last;
|
|
while (last != buffer.end())
|
|
{
|
|
if (last != buffer.begin() and is_eol(*last) and is_eol(*(last-1)))
|
|
{
|
|
if (not (flags & ObjectFlags::Inner))
|
|
skip_while(last, buffer.end(),
|
|
[](Codepoint c){ return is_eol(c); });
|
|
break;
|
|
}
|
|
++last;
|
|
}
|
|
--last;
|
|
}
|
|
}
|
|
return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
|
|
: Selection{last.coord(), first.coord()};
|
|
}
|
|
|
|
Optional<Selection>
|
|
select_whitespaces(const Context& context, const Selection& selection,
|
|
int count, ObjectFlags flags)
|
|
{
|
|
auto is_whitespace = [&](char c) {
|
|
return c == ' ' or c == '\t' or
|
|
(not (flags & ObjectFlags::Inner) and c == '\n');
|
|
};
|
|
auto& buffer = context.buffer();
|
|
BufferIterator first = buffer.iterator_at(selection.cursor());
|
|
BufferIterator last = first;
|
|
|
|
if (not is_whitespace(*first))
|
|
return {};
|
|
|
|
if (flags & ObjectFlags::ToBegin)
|
|
{
|
|
if (is_whitespace(*first))
|
|
{
|
|
skip_while_reverse(first, buffer.begin(), is_whitespace);
|
|
if (not is_whitespace(*first))
|
|
++first;
|
|
}
|
|
}
|
|
if (flags & ObjectFlags::ToEnd)
|
|
{
|
|
if (is_whitespace(*last))
|
|
{
|
|
skip_while(last, buffer.end(), is_whitespace);
|
|
--last;
|
|
}
|
|
}
|
|
return (flags & ObjectFlags::ToEnd) ? Selection{first.coord(), last.coord()}
|
|
: Selection{last.coord(), first.coord()};
|
|
}
|
|
|
|
Optional<Selection>
|
|
select_indent(const Context& context, const Selection& selection,
|
|
int count, ObjectFlags flags)
|
|
{
|
|
auto get_indent = [](StringView str, int tabstop) {
|
|
CharCount indent = 0;
|
|
for (auto& c : str)
|
|
{
|
|
if (c == ' ')
|
|
++indent;
|
|
else if (c =='\t')
|
|
indent = (indent / tabstop + 1) * tabstop;
|
|
else
|
|
break;
|
|
}
|
|
return indent;
|
|
};
|
|
|
|
auto get_current_indent = [&](const Buffer& buffer, LineCount line, int tabstop)
|
|
{
|
|
for (auto l = line; l >= 0; --l)
|
|
if (buffer[l] != "\n"_sv)
|
|
return get_indent(buffer[l], tabstop);
|
|
for (auto l = line+1; l < buffer.line_count(); ++l)
|
|
if (buffer[l] != "\n"_sv)
|
|
return get_indent(buffer[l], tabstop);
|
|
return 0_char;
|
|
};
|
|
|
|
auto is_only_whitespaces = [](StringView str) {
|
|
auto it = str.begin();
|
|
skip_while(it, str.end(),
|
|
[](char c){ return c == ' ' or c == '\t' or c == '\n'; });
|
|
return it == str.end();
|
|
};
|
|
|
|
const bool to_begin = flags & ObjectFlags::ToBegin;
|
|
const bool to_end = flags & ObjectFlags::ToEnd;
|
|
|
|
auto& buffer = context.buffer();
|
|
int tabstop = context.options()["tabstop"].get<int>();
|
|
auto pos = selection.cursor();
|
|
const LineCount line = pos.line;
|
|
const auto indent = get_current_indent(buffer, line, tabstop);
|
|
|
|
LineCount begin_line = line - 1;
|
|
if (to_begin)
|
|
{
|
|
while (begin_line >= 0 and (buffer[begin_line] == "\n"_sv or
|
|
get_indent(buffer[begin_line], tabstop) >= indent))
|
|
--begin_line;
|
|
}
|
|
++begin_line;
|
|
LineCount end_line = line + 1;
|
|
if (to_end)
|
|
{
|
|
const LineCount end = buffer.line_count();
|
|
while (end_line < end and (buffer[end_line] == "\n"_sv or
|
|
get_indent(buffer[end_line], tabstop) >= indent))
|
|
++end_line;
|
|
}
|
|
--end_line;
|
|
// remove only whitespaces lines in inner mode
|
|
if (flags & ObjectFlags::Inner)
|
|
{
|
|
while (begin_line < end_line and
|
|
is_only_whitespaces(buffer[begin_line]))
|
|
++begin_line;
|
|
while (begin_line < end_line and
|
|
is_only_whitespaces(buffer[end_line]))
|
|
--end_line;
|
|
}
|
|
|
|
auto first = to_begin ? begin_line : pos;
|
|
auto last = to_end ? BufferCoord{end_line, buffer[end_line].length() - 1} : pos;
|
|
return to_end ? Selection{first, last} : Selection{last, first};
|
|
}
|
|
|
|
Optional<Selection>
|
|
select_argument(const Context& context, const Selection& selection,
|
|
int level, ObjectFlags flags)
|
|
{
|
|
enum Class { None, Opening, Closing, Delimiter };
|
|
auto classify = [](Codepoint c) {
|
|
switch (c)
|
|
{
|
|
case '(': case '[': case '{': return Opening;
|
|
case ')': case ']': case '}': return Closing;
|
|
case ',': case ';': return Delimiter;
|
|
default: return None;
|
|
}
|
|
};
|
|
|
|
auto& buffer = context.buffer();
|
|
BufferIterator pos = buffer.iterator_at(selection.cursor());
|
|
switch (classify(*pos))
|
|
{
|
|
//case Closing: if (pos+1 != buffer.end()) ++pos; break;
|
|
case Opening:
|
|
case Delimiter: if (pos != buffer.begin()) --pos; break;
|
|
default: break;
|
|
};
|
|
|
|
bool first_arg = false;
|
|
BufferIterator begin = pos;
|
|
for (int lev = level; begin != buffer.begin(); --begin)
|
|
{
|
|
Class c = classify(*begin);
|
|
if (c == Closing)
|
|
++lev;
|
|
else if (c == Opening and (lev-- == 0))
|
|
{
|
|
first_arg = true;
|
|
++begin;
|
|
break;
|
|
}
|
|
else if (c == Delimiter and lev == 0)
|
|
{
|
|
++begin;
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool last_arg = false;
|
|
BufferIterator end = pos;
|
|
for (int lev = level; end != buffer.end(); ++end)
|
|
{
|
|
Class c = classify(*end);
|
|
if (c == Opening)
|
|
++lev;
|
|
else if (end != pos and c == Closing and (lev-- == 0))
|
|
{
|
|
last_arg = true;
|
|
--end;
|
|
break;
|
|
}
|
|
else if (c == Delimiter and lev == 0)
|
|
{
|
|
// include whitespaces *after* the delimiter only for first argument
|
|
if (first_arg and not (flags & ObjectFlags::Inner))
|
|
{
|
|
while (end + 1 != buffer.end() and is_blank(*(end+1)))
|
|
++end;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (flags & ObjectFlags::Inner)
|
|
{
|
|
if (not last_arg)
|
|
--end;
|
|
skip_while(begin, end, is_blank);
|
|
skip_while_reverse(end, begin, is_blank);
|
|
}
|
|
// get starting delimiter for non inner last arg
|
|
else if (not first_arg and last_arg and begin != buffer.begin())
|
|
--begin;
|
|
|
|
if (end == buffer.end())
|
|
--end;
|
|
|
|
if (flags & ObjectFlags::ToBegin and not (flags & ObjectFlags::ToEnd))
|
|
return Selection{pos.coord(), begin.coord()};
|
|
return Selection{(flags & ObjectFlags::ToBegin ? begin : pos).coord(),
|
|
end.coord()};
|
|
}
|
|
|
|
Optional<Selection>
|
|
select_lines(const Context& context, const Selection& selection)
|
|
{
|
|
auto& buffer = context.buffer();
|
|
BufferCoord anchor = selection.anchor();
|
|
BufferCoord cursor = selection.cursor();
|
|
BufferCoord& to_line_start = anchor <= cursor ? anchor : cursor;
|
|
BufferCoord& to_line_end = anchor <= cursor ? cursor : anchor;
|
|
|
|
to_line_start.column = 0;
|
|
to_line_end.column = buffer[to_line_end.line].length()-1;
|
|
|
|
return Selection{anchor, {cursor, max_column}};
|
|
}
|
|
|
|
Optional<Selection>
|
|
trim_partial_lines(const Context& context, const Selection& selection)
|
|
{
|
|
auto& buffer = context.buffer();
|
|
BufferCoord anchor = selection.anchor();
|
|
BufferCoord cursor = selection.cursor();
|
|
BufferCoord& to_line_start = anchor <= cursor ? anchor : cursor;
|
|
BufferCoord& to_line_end = anchor <= cursor ? cursor : anchor;
|
|
|
|
if (to_line_start.column != 0)
|
|
to_line_start = to_line_start.line+1;
|
|
if (to_line_end.column != buffer[to_line_end.line].length()-1)
|
|
{
|
|
if (to_line_end.line == 0)
|
|
return {};
|
|
|
|
auto prev_line = to_line_end.line-1;
|
|
to_line_end = BufferCoord{ prev_line, buffer[prev_line].length()-1 };
|
|
}
|
|
|
|
if (to_line_start > to_line_end)
|
|
return {};
|
|
|
|
return Selection{anchor, {cursor, max_column}};
|
|
}
|
|
|
|
static RegexExecFlags
|
|
match_flags(const Buffer& buf, const BufferIterator& begin, const BufferIterator& end)
|
|
{
|
|
return match_flags(is_bol(begin.coord()), is_eol(buf, end.coord()),
|
|
is_bow(buf, begin.coord()), is_eow(buf, end.coord()));
|
|
}
|
|
|
|
static bool find_next(const Buffer& buffer, const BufferIterator& pos,
|
|
MatchResults<BufferIterator>& matches,
|
|
const Regex& ex, bool& wrapped)
|
|
{
|
|
if (pos != buffer.end() and
|
|
regex_search(pos, buffer.end(), buffer.begin(), buffer.end(),
|
|
matches, ex, match_flags(buffer, pos, buffer.end()),
|
|
EventManager::handle_urgent_events))
|
|
return true;
|
|
wrapped = true;
|
|
return regex_search(buffer.begin(), buffer.end(), buffer.begin(), buffer.end(),
|
|
matches, ex, match_flags(buffer, buffer.begin(), buffer.end()),
|
|
EventManager::handle_urgent_events);
|
|
}
|
|
|
|
static bool find_prev(const Buffer& buffer, const BufferIterator& pos,
|
|
MatchResults<BufferIterator>& matches,
|
|
const Regex& ex, bool& wrapped)
|
|
{
|
|
if (pos != buffer.begin() and
|
|
backward_regex_search(buffer.begin(), pos, buffer.begin(), buffer.end(),
|
|
matches, ex,
|
|
match_flags(buffer, buffer.begin(), pos) |
|
|
RegexExecFlags::NotInitialNull,
|
|
EventManager::handle_urgent_events))
|
|
return true;
|
|
wrapped = true;
|
|
return backward_regex_search(buffer.begin(), buffer.end(), buffer.begin(), buffer.end(),
|
|
matches, ex,
|
|
match_flags(buffer, buffer.begin(), buffer.end()) |
|
|
RegexExecFlags::NotInitialNull,
|
|
EventManager::handle_urgent_events);
|
|
}
|
|
|
|
template<RegexMode mode>
|
|
Selection find_next_match(const Context& context, const Selection& sel, const Regex& regex, bool& wrapped)
|
|
{
|
|
static_assert(is_direction(mode));
|
|
constexpr bool forward = mode & RegexMode::Forward;
|
|
auto& buffer = context.buffer();
|
|
MatchResults<BufferIterator> matches;
|
|
auto pos = buffer.iterator_at(forward ? sel.max() : sel.min());
|
|
wrapped = false;
|
|
const bool found = forward ?
|
|
find_next(buffer, utf8::next(pos, buffer.end()), matches, regex, wrapped)
|
|
: find_prev(buffer, pos, matches, regex, wrapped);
|
|
|
|
if (not found or matches[0].first == buffer.end())
|
|
throw runtime_error(format("no matches found: '{}'", regex.str()));
|
|
|
|
CaptureList captures;
|
|
for (const auto& match : matches)
|
|
captures.push_back(buffer.string(match.first.coord(), match.second.coord()));
|
|
|
|
auto begin = matches[0].first, end = matches[0].second;
|
|
end = (begin == end) ? end : utf8::previous(end, begin);
|
|
if (not forward)
|
|
std::swap(begin, end);
|
|
|
|
return {begin.coord(), end.coord(), std::move(captures)};
|
|
}
|
|
template Selection find_next_match<RegexMode::Forward>(const Context&, const Selection&, const Regex&, bool&);
|
|
template Selection find_next_match<RegexMode::Backward>(const Context&, const Selection&, const Regex&, bool&);
|
|
|
|
Vector<Selection> select_matches(const Buffer& buffer, ConstArrayView<Selection> selections, const Regex& regex, int capture_idx)
|
|
{
|
|
const int mark_count = (int)regex.mark_count();
|
|
if (capture_idx < 0 or capture_idx > mark_count)
|
|
throw runtime_error("invalid capture number");
|
|
|
|
Vector<Selection> result;
|
|
ThreadedRegexVM<BufferIterator, RegexMode::Forward | RegexMode::Search> vm{*regex.impl()};
|
|
for (auto& sel : selections)
|
|
{
|
|
auto sel_beg = buffer.iterator_at(sel.min());
|
|
auto sel_end = utf8::next(buffer.iterator_at(sel.max()), buffer.end());
|
|
|
|
for (auto&& match : RegexIterator{sel_beg, sel_end, vm, match_flags(buffer, sel_beg, sel_end),
|
|
EventManager::handle_urgent_events})
|
|
{
|
|
auto capture = match[capture_idx];
|
|
if (not capture.matched or capture.first == sel_end)
|
|
continue;
|
|
|
|
CaptureList captures;
|
|
captures.reserve(mark_count);
|
|
for (const auto& submatch : match)
|
|
captures.push_back(buffer.string(submatch.first.coord(),
|
|
submatch.second.coord()));
|
|
|
|
auto begin = capture.first, end = capture.second;
|
|
kak_assert(result.empty() or begin.coord() >= result.back().min());
|
|
result.push_back(
|
|
keep_direction({ begin.coord(),
|
|
(begin == end ? end : utf8::previous(end, begin)).coord(),
|
|
std::move(captures) }, sel));
|
|
}
|
|
}
|
|
if (result.empty())
|
|
throw runtime_error("nothing selected");
|
|
return result;
|
|
}
|
|
|
|
Vector<Selection> split_on_matches(const Buffer& buffer, ConstArrayView<Selection> selections, const Regex& regex, int capture_idx)
|
|
{
|
|
if (capture_idx < 0 or capture_idx > (int)regex.mark_count())
|
|
throw runtime_error("invalid capture number");
|
|
|
|
Vector<Selection> result;
|
|
auto buf_end = buffer.end();
|
|
auto buf_begin = buffer.begin();
|
|
ThreadedRegexVM<BufferIterator, RegexMode::Forward | RegexMode::Search> vm{*regex.impl()};
|
|
for (auto& sel : selections)
|
|
{
|
|
auto sel_begin = buffer.iterator_at(sel.min());
|
|
auto begin = sel_begin;
|
|
auto sel_end = utf8::next(buffer.iterator_at(sel.max()), buf_end);
|
|
|
|
for (auto&& match : RegexIterator{begin, sel_end, vm, match_flags(buffer, begin, sel_end)})
|
|
{
|
|
auto capture = match[capture_idx];
|
|
BufferIterator end = capture.first;
|
|
if (end == buf_end)
|
|
continue;
|
|
|
|
if (end != sel_begin)
|
|
{
|
|
auto sel_end = (begin == end) ? end : utf8::previous(end, begin);
|
|
result.push_back(keep_direction({ begin.coord(), sel_end.coord() }, sel));
|
|
}
|
|
begin = capture.second;
|
|
}
|
|
if (begin.coord() <= sel.max())
|
|
result.push_back(keep_direction({ begin.coord(), sel.max() }, sel));
|
|
}
|
|
if (result.empty())
|
|
throw runtime_error("nothing selected");
|
|
return result;
|
|
}
|
|
|
|
UnitTest test_find_surrounding{[]()
|
|
{
|
|
StringView s = "{foo [bar { baz[] }]}";
|
|
auto check_equal = [&](const char* pos, StringView opening, StringView closing,
|
|
ObjectFlags flags, int level, StringView expected) {
|
|
auto res = find_surrounding(s, pos,
|
|
Regex{"\\Q" + opening, RegexCompileFlags::Backward},
|
|
Regex{"\\Q" + closing, RegexCompileFlags::Backward},
|
|
flags, level);
|
|
kak_assert(res);
|
|
auto min = std::min(res->first, res->second),
|
|
max = std::max(res->first, res->second);
|
|
kak_assert(StringView{min, max+1} == expected);
|
|
};
|
|
|
|
check_equal(s.begin() + 13, '{', '}', ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, "{ baz[] }");
|
|
check_equal(s.begin() + 13, '[', ']', ObjectFlags::ToBegin | ObjectFlags::ToEnd | ObjectFlags::Inner, 0, "bar { baz[] }");
|
|
check_equal(s.begin() + 5, '[', ']', ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, "[bar { baz[] }]");
|
|
check_equal(s.begin() + 10, '{', '}', ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, "{ baz[] }");
|
|
check_equal(s.begin() + 16, '[', ']', ObjectFlags::ToBegin | ObjectFlags::ToEnd | ObjectFlags::Inner, 0, "]");
|
|
check_equal(s.begin() + 18, '[', ']', ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, "[bar { baz[] }]");
|
|
check_equal(s.begin() + 6, '[', ']', ObjectFlags::ToBegin, 0, "[b");
|
|
|
|
s = "[*][] foo";
|
|
kak_assert(not find_surrounding(s, s.begin() + 6,
|
|
Regex{"\\Q[", RegexCompileFlags::Backward},
|
|
Regex{"\\Q]", RegexCompileFlags::Backward},
|
|
ObjectFlags::ToBegin, 0));
|
|
|
|
s = "begin foo begin bar end end";
|
|
check_equal(s.begin() + 6, "begin", "end", ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, s);
|
|
check_equal(s.begin() + 22, "begin", "end", ObjectFlags::ToBegin | ObjectFlags::ToEnd, 0, "begin bar end");
|
|
}};
|
|
|
|
}
|