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pass by value instead of rvalue reference for RVO to take place

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This commit is contained in:
Andrzej Rybczak
2014-11-01 01:37:32 +01:00
parent 7e2900511c
commit e9a539f8ee
3 changed files with 25 additions and 25 deletions
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46
src/settings.cpp
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@@ -154,14 +154,14 @@ void add_slash_at_the_end(std::string &s)
}
}
std::string adjust_directory(std::string &&s)
std::string adjust_directory(std::string s)
{
add_slash_at_the_end(s);
expand_home(s);
return s;
}
std::string adjust_and_validate_format(std::string &&format)
std::string adjust_and_validate_format(std::string format)
{
MPD::Song::validateFormat(format);
format = "{" + format + "}";
@@ -172,8 +172,8 @@ std::string adjust_and_validate_format(std::string &&format)
template <typename ValueT, typename TransformT>
option_parser::worker buffer(NC::Buffer &arg, ValueT &&value, TransformT &&map)
{
return option_parser::worker(assign<std::string>(arg, [&arg, map](std::string &&s) {
return map(stringToBuffer(s));
return option_parser::worker(assign<std::string>(arg, [&arg, map](std::string s) {
return map(stringToBuffer(std::move(s)));
}), defaults_to(arg, map(std::forward<ValueT>(value))));
}
@@ -194,7 +194,7 @@ bool Configuration::read(const std::string &config_path)
lyrics_directory, "~/.lyrics/", adjust_directory
));
p.add("mpd_host", assign_default<std::string>(
mpd_host, "localhost", [](std::string &&host) {
mpd_host, "localhost", [](std::string host) {
Mpd.SetHostname(host);
return host;
}));
@@ -234,13 +234,13 @@ bool Configuration::read(const std::string &config_path)
visualizer_type, VisualizerType::Wave
));
p.add("visualizer_look", assign_default<std::string>(
visualizer_chars, "●▮", [](std::string &&s) {
visualizer_chars, "●▮", [](std::string s) {
auto result = ToWString(std::move(s));
typedef std::wstring::size_type size_type;
boundsCheck(result.size(), size_type(2), size_type(2));
return result;
}));
p.add("visualizer_color", option_parser::worker([this](std::string &&v) {
p.add("visualizer_color", option_parser::worker([this](std::string v) {
boost::sregex_token_iterator i(v.begin(), v.end(), boost::regex("\\w+")), j;
for (; i != j; ++i)
{
@@ -253,7 +253,7 @@ bool Configuration::read(const std::string &config_path)
visualizer_colors = { NC::Color::Blue, NC::Color::Cyan, NC::Color::Green, NC::Color::Yellow, NC::Color::Magenta, NC::Color::Red };
}));
p.add("system_encoding", assign_default<std::string>(
system_encoding, "", [](std::string &&enc) {
system_encoding, "", [](std::string enc) {
# ifdef HAVE_LANGINFO_H
// try to autodetect system encoding
if (enc.empty())
@@ -273,13 +273,13 @@ bool Configuration::read(const std::string &config_path)
message_delay_time, 5
));
p.add("song_list_format", assign_default<std::string>(
song_list_format, "{%a - }{%t}|{$8%f$9}$R{$3(%l)$9}", [this](std::string &&s) {
song_list_format, "{%a - }{%t}|{$8%f$9}$R{$3(%l)$9}", [this](std::string s) {
auto result = adjust_and_validate_format(std::move(s));
song_list_format_dollar_free = remove_dollar_formatting(result);
return result;
}));
p.add("song_status_format", assign_default<std::string>(
song_status_format, "{{%a{ \"%b\"{ (%y)}} - }{%t}}|{%f}", [this](std::string &&s) {
song_status_format, "{{%a{ \"%b\"{ (%y)}} - }{%t}}|{%f}", [this](std::string s) {
auto result = adjust_and_validate_format(std::move(s));
if (result.find("$") != std::string::npos)
song_status_format_no_colors = stringToBuffer(result).str();
@@ -306,12 +306,12 @@ bool Configuration::read(const std::string &config_path)
new_header_second_line, "{{$4$b%a$/b$9}{ - $7%b$9}{ ($4%y$9)}}|{%D}", adjust_and_validate_format
));
p.add("now_playing_prefix", buffer(
now_playing_prefix, NC::Buffer(NC::Format::Bold), [this](NC::Buffer &&buf) {
now_playing_prefix, NC::Buffer(NC::Format::Bold), [this](NC::Buffer buf) {
now_playing_prefix_length = wideLength(ToWString(buf.str()));
return buf;
}));
p.add("now_playing_suffix", buffer(
now_playing_suffix, NC::Buffer(NC::Format::NoBold), [this](NC::Buffer &&buf) {
now_playing_suffix, NC::Buffer(NC::Format::NoBold), [this](NC::Buffer buf) {
now_playing_suffix_length = wideLength(ToWString(buf.str()));
return buf;
}));
@@ -319,12 +319,12 @@ bool Configuration::read(const std::string &config_path)
browser_playlist_prefix, NC::Buffer(NC::Color::Red, "playlist", NC::Color::End, ' '), id_()
));
p.add("selected_item_prefix", buffer(
selected_item_prefix, NC::Buffer(NC::Color::Magenta), [this](NC::Buffer &&buf) {
selected_item_prefix, NC::Buffer(NC::Color::Magenta), [this](NC::Buffer buf) {
selected_item_prefix_length = wideLength(ToWString(buf.str()));
return buf;
}));
p.add("selected_item_suffix", buffer(
selected_item_suffix, NC::Buffer(NC::Color::End), [this](NC::Buffer &&buf) {
selected_item_suffix, NC::Buffer(NC::Color::End), [this](NC::Buffer buf) {
selected_item_suffix_length = wideLength(ToWString(buf.str()));
return buf;
}));
@@ -336,7 +336,7 @@ bool Configuration::read(const std::string &config_path)
));
p.add("song_columns_list_format", assign_default<std::string>(
columns_format, "(20)[]{a} (6f)[green]{NE} (50)[white]{t|f:Title} (20)[cyan]{b} (7f)[magenta]{l}",
[this](std::string &&v) {
[this](std::string v) {
boost::tie(columns, song_in_columns_to_string_format) = generate_columns(v);
return v;
}));
@@ -383,7 +383,7 @@ bool Configuration::read(const std::string &config_path)
centered_cursor, false
));
p.add("progressbar_look", assign_default<std::string>(
progressbar, "=>", [](std::string &&s) {
progressbar, "=>", [](std::string s) {
auto result = ToWString(std::move(s));
typedef std::wstring::size_type size_type;
boundsCheck(result.size(), size_type(2), size_type(3));
@@ -394,7 +394,7 @@ bool Configuration::read(const std::string &config_path)
p.add("progressbar_boldness", yes_no(
progressbar_boldness, true
));
p.add("default_place_to_search_in", option_parser::worker([this](std::string &&v) {
p.add("default_place_to_search_in", option_parser::worker([this](std::string v) {
if (v == "database")
search_in_db = true;
else if (v == "playlist")
@@ -409,7 +409,7 @@ bool Configuration::read(const std::string &config_path)
p.add("data_fetching_delay", yes_no(
data_fetching_delay, true
));
p.add("media_library_primary_tag", option_parser::worker([this](std::string &&v) {
p.add("media_library_primary_tag", option_parser::worker([this](std::string v) {
if (v == "artist")
media_lib_primary_tag = MPD_TAG_ARTIST;
else if (v == "album_artist")
@@ -426,7 +426,7 @@ bool Configuration::read(const std::string &config_path)
throw std::runtime_error("invalid argument: " + v);
}, defaults_to(media_lib_primary_tag, MPD_TAG_ARTIST)
));
p.add("default_find_mode", option_parser::worker([this](std::string &&v) {
p.add("default_find_mode", option_parser::worker([this](std::string v) {
if (v == "wrapped")
wrapped_search = true;
else if (v == "normal")
@@ -435,7 +435,7 @@ bool Configuration::read(const std::string &config_path)
throw std::runtime_error("invalid argument: " + v);
}, defaults_to(wrapped_search, true)
));
p.add("default_space_mode", option_parser::worker([this](std::string &&v) {
p.add("default_space_mode", option_parser::worker([this](std::string v) {
if (v == "add")
space_selects = false;
else if (v == "select")
@@ -489,7 +489,7 @@ bool Configuration::read(const std::string &config_path)
p.add("show_hidden_files_in_local_browser", yes_no(
local_browser_show_hidden_files, false
));
p.add("screen_switcher_mode", option_parser::worker([this](std::string &&v) {
p.add("screen_switcher_mode", option_parser::worker([this](std::string v) {
if (v == "previous")
screen_switcher_previous = true;
else
@@ -509,7 +509,7 @@ bool Configuration::read(const std::string &config_path)
screen_switcher_previous = false;
screen_sequence = { ScreenType::Playlist, ScreenType::Browser };
}));
p.add("startup_screen", option_parser::worker([this](std::string &&v) {
p.add("startup_screen", option_parser::worker([this](std::string v) {
startup_screen_type = stringtoStartupScreenType(v);
if (startup_screen_type == ScreenType::Unknown)
throw std::runtime_error("unknown screen: " + v);
@@ -540,7 +540,7 @@ bool Configuration::read(const std::string &config_path)
p.add("display_remaining_time", yes_no(
display_remaining_time, false
));
p.add("regular_expressions", option_parser::worker([this](std::string &&v) {
p.add("regular_expressions", option_parser::worker([this](std::string v) {
if (v == "none")
regex_type = boost::regex::literal;
else if (v == "basic")