From 26ef76213c81b6c2dc8eeeae11e9586f22a76011 Mon Sep 17 00:00:00 2001 From: Lioncash Date: Mon, 13 Dec 2021 11:07:26 -0500 Subject: [PATCH] tas_input: std::move strings into vector While we're in the same area, we can also avoid performing std::stoi in a loop when it only needs to be performed once. --- src/input_common/drivers/tas_input.cpp | 45 ++++++++++++++------------ 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/src/input_common/drivers/tas_input.cpp b/src/input_common/drivers/tas_input.cpp index a7d3d0b47..d14a43b9e 100644 --- a/src/input_common/drivers/tas_input.cpp +++ b/src/input_common/drivers/tas_input.cpp @@ -93,27 +93,29 @@ void Tas::LoadTasFile(size_t player_index, size_t file_index) { continue; } - std::istringstream linestream(line); - std::string segment; - std::vector seglist; - - while (std::getline(linestream, segment, ' ')) { - seglist.push_back(segment); + std::vector seg_list; + { + std::istringstream line_stream(line); + std::string segment; + while (std::getline(line_stream, segment, ' ')) { + seg_list.push_back(std::move(segment)); + } } - if (seglist.size() < 4) { + if (seg_list.size() < 4) { continue; } - while (frame_no < std::stoi(seglist.at(0))) { - commands[player_index].push_back({}); + const auto num_frames = std::stoi(seg_list[0]); + while (frame_no < num_frames) { + commands[player_index].emplace_back(); frame_no++; } TASCommand command = { - .buttons = ReadCommandButtons(seglist.at(1)), - .l_axis = ReadCommandAxis(seglist.at(2)), - .r_axis = ReadCommandAxis(seglist.at(3)), + .buttons = ReadCommandButtons(seg_list[1]), + .l_axis = ReadCommandAxis(seg_list[2]), + .r_axis = ReadCommandAxis(seg_list[3]), }; commands[player_index].push_back(command); frame_no++; @@ -223,22 +225,23 @@ void Tas::ClearInput() { } TasAnalog Tas::ReadCommandAxis(const std::string& line) const { - std::stringstream linestream(line); - std::string segment; - std::vector seglist; - - while (std::getline(linestream, segment, ';')) { - seglist.push_back(segment); + std::vector seg_list; + { + std::istringstream line_stream(line); + std::string segment; + while (std::getline(line_stream, segment, ';')) { + seg_list.push_back(std::move(segment)); + } } - const float x = std::stof(seglist.at(0)) / 32767.0f; - const float y = std::stof(seglist.at(1)) / 32767.0f; + const float x = std::stof(seg_list.at(0)) / 32767.0f; + const float y = std::stof(seg_list.at(1)) / 32767.0f; return {x, y}; } u64 Tas::ReadCommandButtons(const std::string& line) const { - std::stringstream button_text(line); + std::istringstream button_text(line); std::string button_line; u64 buttons = 0; while (std::getline(button_text, button_line, ';')) {