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kakoune/src/filters.cc

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#include "filters.hh"
namespace Kakoune
{
void colorize_regex(DisplayBuffer& display_buffer,
const boost::regex& ex, Color color)
{
for (auto atom_it = display_buffer.begin();
atom_it != display_buffer.end(); ++atom_it)
{
boost::match_results<BufferIterator> matches;
if (boost::regex_search(atom_it->begin, atom_it->end, matches, ex, boost::match_nosubs))
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{
const BufferIterator& begin = matches.begin()->first;
if (begin != atom_it->begin)
atom_it = display_buffer.split(atom_it, begin) + 1;
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const BufferIterator& end = matches.begin()->second;
if (end != atom_it->end)
atom_it = display_buffer.split(atom_it, end);
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atom_it->fg_color = color;
}
}
}
void colorize_cplusplus(DisplayBuffer& display_buffer)
{
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static boost::regex preprocessor("(\\`|(?<=\\n))\\h*#\\h*[^\\n]*(?=\\n)");
colorize_regex(display_buffer, preprocessor, Color::Magenta);
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static boost::regex comments("//[^\\n]*\\n");
colorize_regex(display_buffer, comments, Color::Cyan);
static boost::regex strings("(?<!')\"(\\\\\"|[^\"])*\"");
colorize_regex(display_buffer, strings, Color::Magenta);
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static boost::regex values("\\<(true|false|NULL|nullptr)\\>|-?\\d+[fdiu]?|'\\\\?[^']?'");
colorize_regex(display_buffer, values, Color::Red);
static boost::regex builtin_types("\\<(void|int|float|bool|size_t)\\>");
colorize_regex(display_buffer, builtin_types, Color::Yellow);
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static boost::regex control_keywords("\\<(while|for|if|else|do|switch|case|default|goto|break|continue|return|using|try|catch|throw)\\>");
colorize_regex(display_buffer, control_keywords, Color::Blue);
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//static boost::regex operators("->|\\+|\\-|\\*|/|\\\\|\\&|\\|\\^|[<>=!+-]=|=|\\(|\\)|\\[|\\]|\\{|\\}|\\<(not|and|or|xor)\\>");
//colorize_regex(display_buffer, operators, Color::Green);
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static boost::regex types_keywords("\\<(const|auto|namespace|static|volatile|class|struct|enum|union|public|protected|private|template)\\>");
colorize_regex(display_buffer, types_keywords, Color::Green);
}
void expand_tabulations(DisplayBuffer& display_buffer)
{
const int tabstop = 8;
for (auto atom_it = display_buffer.begin();
atom_it != display_buffer.end(); ++atom_it)
{
for (BufferIterator it = atom_it->begin; it != atom_it->end; ++it)
{
if (*it == '\t')
{
if (it != atom_it->begin)
atom_it = display_buffer.split(atom_it, it) + 1;
if (it+1 != atom_it->end)
atom_it = display_buffer.split(atom_it, it+1);
BufferCoord pos = it.buffer().line_and_column_at(it);
int count = tabstop - (pos.column % tabstop);
atom_it->replacement_text = std::string(count, ' ');
}
}
}
}
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}