hphp/hhbbc/unit-util.cpp

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16 #include "hphp/hhbbc/unit-util.h"
  17
  18 #include "hphp/hhbbc/representation.h"
  19 #include "hphp/runtime/base/file-util.h"
  20 #include "hphp/runtime/base/static-string-table.h"
  21 #include "hphp/runtime/vm/native.h"
  22
  23 namespace HPHP::HHBBC {
  24
  25 //////////////////////////////////////////////////////////////////////
  26
  27 namespace {
  28 const StaticString s_nativeUnitName("/!native");
  29 }
  30
  31 //////////////////////////////////////////////////////////////////////
  32
  33 bool is_systemlib_part(SString filename) {
  34   return FileUtil::isSystemName(filename->slice());
  35 }
  36
  37 bool is_systemlib_part(const php::Unit& unit) {
  38   return is_systemlib_part(unit.filename);
  39 }
  40
  41 //////////////////////////////////////////////////////////////////////
  42
  43 bool is_native_unit(SString unit) {
  44   return unit == s_nativeUnitName.get();
  45 }
  46
  47 bool is_native_unit(const php::Unit& unit) {
  48   return is_native_unit(unit.filename);
  49 }
  50
  51 std::unique_ptr<php::Unit> make_native_unit() {
  52   auto unit = std::make_unique<php::Unit>();
  53   unit->filename = s_nativeUnitName.get();
  54
  55   for (auto const& [name, val] : Native::getConstants()) {
  56     assertx(type(val) != KindOfUninit);
  57     auto cns = std::make_unique<php::Constant>();
  58     cns->name = name;
  59     cns->val = val;
  60     cns->attrs = AttrPersistent;
  61     unit->constants.emplace_back(std::move(cns));
  62   }
  63
  64   // Keep a consistent ordering of the constants.
  65   std::sort(
  66     begin(unit->constants),
  67     end(unit->constants),
  68     [] (const std::unique_ptr<php::Constant>& a,
  69         const std::unique_ptr<php::Constant>& b) {
  70       return string_data_lt{}(a->name, b->name);
  71     }
  72   );
  73
  74   return unit;
  75 }
  76
  77 //////////////////////////////////////////////////////////////////////
  78
  79 }