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generalize do_select_surrounding in do_select_object and add a whole word selector

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This commit is contained in:
Maxime Coste 2012-03-12 14:23:30 +00:00
parent df0f7b4689
commit cd615b35a2
3 changed files with 52 additions and 21 deletions
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43
src/main.cc
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@ -691,29 +691,30 @@ void do_join(Editor& editor, int count)
editor.move_selections({0, -1});
}
template<bool inside>
void do_select_surrounding(Editor& editor, int count)
template<bool inner>
void do_select_object(Editor& editor, int count)
{
Key key = get_key();
const char id = key.key;
static const std::unordered_map<char, std::pair<char, char>> id_to_matching =
typedef std::function<SelectionAndCaptures (const Selection&)> Selector;
static const std::unordered_map<Key, Selector> key_to_selector =
{
{ '(', { '(', ')' } },
{ ')', { '(', ')' } },
{ 'b', { '(', ')' } },
{ '{', { '{', '}' } },
{ '}', { '{', '}' } },
{ 'B', { '{', '}' } },
{ '[', { '[', ']' } },
{ ']', { '[', ']' } },
{ '<', { '<', '>' } },
{ '>', { '<', '>' } }
{ { Key::Modifiers::None, '(' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '(', ')' }, inner) },
{ { Key::Modifiers::None, ')' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '(', ')' }, inner) },
{ { Key::Modifiers::None, 'b' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '(', ')' }, inner) },
{ { Key::Modifiers::None, '{' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '{', '}' }, inner) },
{ { Key::Modifiers::None, '}' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '{', '}' }, inner) },
{ { Key::Modifiers::None, 'B' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '{', '}' }, inner) },
{ { Key::Modifiers::None, '[' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '[', ']' }, inner) },
{ { Key::Modifiers::None, ']' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '[', ']' }, inner) },
{ { Key::Modifiers::None, '<' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '<', '>' }, inner) },
{ { Key::Modifiers::None, '>' }, std::bind(select_surrounding, _1, std::pair<char, char>{ '<', '>' }, inner) },
{ { Key::Modifiers::None, 'w' }, std::bind(select_whole_word<false>, _1, inner) },
{ { Key::Modifiers::None, 'W' }, std::bind(select_whole_word<true>, _1, inner) },
};
auto matching = id_to_matching.find(id);
if (matching != id_to_matching.end())
editor.select(std::bind(select_surrounding, _1, matching->second, inside));
Key key = get_key();
auto it = key_to_selector.find(key);
if (it != key_to_selector.end())
editor.select(it->second);
}
std::unordered_map<Key, std::function<void (Editor& editor, int count)>> keymap =
@ -779,8 +780,8 @@ std::unordered_map<Key, std::function<void (Editor& editor, int count)>> keymap
{ { Key::Modifiers::None, 'u' }, [](Editor& editor, int count) { do { if (not editor.undo()) { NCurses::print_status("nothing left to undo"); break; } } while(--count > 0); } },
{ { Key::Modifiers::None, 'U' }, [](Editor& editor, int count) { do { if (not editor.redo()) { NCurses::print_status("nothing left to redo"); break; } } while(--count > 0); } },
{ { Key::Modifiers::Alt, 'i' }, do_select_surrounding<true> },
{ { Key::Modifiers::Alt, 'a' }, do_select_surrounding<false> },
{ { Key::Modifiers::Alt, 'i' }, do_select_object<true> },
{ { Key::Modifiers::Alt, 'a' }, do_select_object<false> },
{ { Key::Modifiers::Alt, 't' }, [](Editor& editor, int count) { editor.select(std::bind(select_to_reverse, _1, get_key().key, count, false)); } },
{ { Key::Modifiers::Alt, 'f' }, [](Editor& editor, int count) { editor.select(std::bind(select_to_reverse, _1, get_key().key, count, true)); } },

28
src/selectors.cc
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@ -319,6 +319,34 @@ SelectionAndCaptures select_to_eol_reverse(const Selection& selection)
return Selection(begin, end.is_begin() ? end : end+1);
}
template<bool punctuation_is_word>
SelectionAndCaptures select_whole_word(const Selection& selection, bool inner)
{
BufferIterator first = selection.last();
BufferIterator last = first;
if (is_word(*first))
{
if (not skip_while_reverse(first, is_word<punctuation_is_word>))
++first;
skip_while(last, is_word<punctuation_is_word>);
if (not inner)
skip_while(last, is_blank);
}
else if (not inner)
{
if (not skip_while_reverse(first, is_blank))
++first;
skip_while(last, is_blank);
if (not is_word<punctuation_is_word>(*last))
return selection;
skip_while(last, is_word<punctuation_is_word>);
}
--last;
return Selection(first, last);
}
template SelectionAndCaptures select_whole_word<false>(const Selection&, bool);
template SelectionAndCaptures select_whole_word<true>(const Selection&, bool);
SelectionAndCaptures select_whole_lines(const Selection& selection)
{
BufferIterator first = selection.first();

2
src/selectors.hh
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@ -27,6 +27,8 @@ SelectionAndCaptures select_to_reverse(const Selection& selection,
SelectionAndCaptures select_to_eol(const Selection& selection);
SelectionAndCaptures select_to_eol_reverse(const Selection& selection);
template<bool punctuation_is_word>
SelectionAndCaptures select_whole_word(const Selection& selection, bool inner);
SelectionAndCaptures select_whole_lines(const Selection& selection);
SelectionAndCaptures select_whole_buffer(const Selection& selection);