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refactoring selectors

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This commit is contained in:
Maxime Coste 2013-01-03 14:30:14 +01:00
parent af90db8330
commit 2195d59b49
1 changed files with 30 additions and 24 deletions
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54
src/selectors.cc
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@ -59,19 +59,17 @@ bool is_begin(const Utf8Iterator& it) { return it.underlying_iterator().is_begin
bool is_end(const Utf8Iterator& it) { return it.underlying_iterator().is_end(); }
template<typename Iterator, typename T>
bool skip_while(Iterator& it, T condition)
void skip_while(Iterator& it, T condition)
{
while (not is_end(it) and condition(*it))
++it;
return not is_end(it) and condition(*it);
}
template<typename Iterator, typename T>
bool skip_while_reverse(Iterator& it, T condition)
void skip_while_reverse(Iterator& it, T condition)
{
while (not is_begin(it) and condition(*it))
--it;
return not is_end(it) and condition(*it);
}
Selection utf8_selection(const Utf8Iterator& first, const Utf8Iterator& last)
@ -99,9 +97,9 @@ Selection select_to_next_word(const Selection& selection)
else if (is_word<punctuation_is_word>(*begin))
skip_while(end, is_word<punctuation_is_word>);
bool with_end = skip_while(end, is_blank);
skip_while(end, is_blank);
return utf8_selection(begin, with_end ? end : end-1);
return utf8_selection(begin, end-1);
}
template Selection select_to_next_word<false>(const Selection&);
template Selection select_to_next_word<true>(const Selection&);
@ -118,13 +116,12 @@ Selection select_to_next_word_end(const Selection& selection)
Utf8Iterator end = begin;
skip_while(end, is_blank);
bool with_end = false;
if (not punctuation_is_word and is_punctuation(*end))
with_end = skip_while(end, is_punctuation);
skip_while(end, is_punctuation);
else if (is_word<punctuation_is_word>(*end))
with_end = skip_while(end, is_word<punctuation_is_word>);
skip_while(end, is_word<punctuation_is_word>);
return utf8_selection(begin, with_end ? end : end-1);
return utf8_selection(begin, end-1);
}
template Selection select_to_next_word_end<false>(const Selection&);
template Selection select_to_next_word_end<true>(const Selection&);
@ -144,9 +141,15 @@ Selection select_to_previous_word(const Selection& selection)
bool with_end = false;
if (not punctuation_is_word and is_punctuation(*end))
with_end = skip_while_reverse(end, is_punctuation);
{
skip_while_reverse(end, is_punctuation);
with_end = is_punctuation(*end);
}
else if (is_word<punctuation_is_word>(*end))
with_end = skip_while_reverse(end, is_word<punctuation_is_word>);
{
skip_while_reverse(end, is_word<punctuation_is_word>);
with_end = is_word<punctuation_is_word>(*end);
}
return utf8_selection(begin, with_end ? end : end+1);
}
@ -325,7 +328,8 @@ Selection select_whole_word(const Selection& selection, bool inner)
Utf8Iterator last = first;
if (is_word(*first))
{
if (not skip_while_reverse(first, is_word<punctuation_is_word>))
skip_while_reverse(first, is_word<punctuation_is_word>);
if (not is_word<punctuation_is_word>(*first))
++first;
skip_while(last, is_word<punctuation_is_word>);
if (not inner)
@ -333,7 +337,8 @@ Selection select_whole_word(const Selection& selection, bool inner)
}
else if (not inner)
{
if (not skip_while_reverse(first, is_blank))
skip_while_reverse(first, is_blank);
if (is_blank(*first))
++first;
skip_while(last, is_blank);
if (not is_word<punctuation_is_word>(*last))
@ -348,19 +353,20 @@ template Selection select_whole_word<true>(const Selection&, bool);
Selection select_whole_lines(const Selection& selection)
{
// no need to be utf8 aware for is_eol as we only use \n as line seperator
BufferIterator first = selection.first();
BufferIterator last = selection.last();
BufferIterator& to_line_start = first <= last ? first : last;
BufferIterator& to_line_end = first <= last ? last : first;
// no need to be utf8 aware for is_eol as we only use \n as line seperator
BufferIterator first = selection.first();
BufferIterator last = selection.last();
BufferIterator& to_line_start = first <= last ? first : last;
BufferIterator& to_line_end = first <= last ? last : first;
--to_line_start;
skip_while_reverse(to_line_start, [](char cur) { return not is_eol(cur); });
++to_line_start;
--to_line_start;
skip_while_reverse(to_line_start, [](char cur) { return not is_eol(cur); });
if (is_eol(*to_line_start))
++to_line_start;
skip_while(to_line_end, [](char cur) { return not is_eol(cur); });
skip_while(to_line_end, [](char cur) { return not is_eol(cur); });
return Selection(first, last);
return Selection(first, last);
}
Selection select_whole_buffer(const Selection& selection)