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Remove unneded std headers in SplitSource.

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GitOrigin-RevId: b0c539d6294bb18a79797b94b38a34e0d89730e3
This commit is contained in:
levlam 2019-04-26 17:30:13 +03:00
parent cdd058565e
commit 36a33ac276
1 changed files with 58 additions and 3 deletions
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55
SplitSource.php
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@ -202,6 +202,61 @@ function split_file($file, $chunks, $undo) {
foreach ($files as $n => $f) {
$new_content = $common.$namespace_begin.$f.$namespace_end;
$std_methods = array();
preg_match_all('/std::[a-z_0-9]*/', $new_content, $std_methods);
$std_methods = array_unique($std_methods[0]);
$needed_std_headers = array();
$type_headers = array(
'std::move' => '',
'std::vector' => '',
'std::string' => '',
'std::uint32_t' => '',
'std::int32_t' => '',
'std::int64_t' => '',
'std::fill' => 'algorithm',
'std::find' => 'algorithm',
'std::max' => 'algorithm',
'std::min' => 'algorithm',
'std::remove' => 'algorithm',
'std::reverse' => 'algorithm',
'std::rotate' => 'algorithm',
'std::sort' => 'algorithm',
'std::numeric_limits' => 'limits',
'std::make_shared' => 'memory',
'std::shared_ptr' => 'memory',
'std::tie' => 'tuple',
'std::tuple' => 'tuple',
'std::decay_t' => 'type_traits',
'std::is_same' => 'type_traits',
'std::make_pair' => 'utility',
'std::pair' => 'utility',
'std::swap' => 'utility',
'std::unordered_map' => 'unordered_map',
'std::unordered_set' => 'unordered_set');
foreach ($type_headers as $type => $header) {
if (in_array($type, $std_methods)) {
$std_methods = array_diff($std_methods, array($type));
if ($header && !in_array($header, $needed_std_headers)) {
$needed_std_headers[] = $header;
}
}
}
if (!$std_methods) { // know all needed std headers
$new_content = preg_replace_callback(
'/#include <([a-z_]*)>/',
function ($matches) use ($needed_std_headers) {
if (in_array($matches[1], $needed_std_headers)) {
return $matches[0];
}
return '';
},
$new_content
);
}
if (!file_exists($new_files[$n]) || file_get_contents($new_files[$n]) !== $new_content) {
echo "Writing file ".$new_files[$n].PHP_EOL;
file_put_contents($new_files[$n], $new_content);