clang/lib/ExtractAPI/AvailabilityInfo.cpp

   1 #include "clang/ExtractAPI/AvailabilityInfo.h"
   2 #include "clang/AST/Attr.h"
   3 #include "llvm/ADT/STLExtras.h"
   4
   5 using namespace clang;
   6 using namespace extractapi;
   7
   8 AvailabilitySet::AvailabilitySet(const Decl *Decl) {
   9   // Collect availability attributes from all redeclrations.
  10   for (const auto *RD : Decl->redecls()) {
  11     if (const auto *A = RD->getAttr<UnavailableAttr>()) {
  12       if (!A->isImplicit()) {
  13         this->Availabilities.clear();
  14         UnconditionallyUnavailable = true;
  15       }
  16     }
  17
  18     if (const auto *A = RD->getAttr<DeprecatedAttr>()) {
  19       if (!A->isImplicit()) {
  20         this->Availabilities.clear();
  21         UnconditionallyDeprecated = true;
  22       }
  23     }
  24
  25     for (const auto *Attr : RD->specific_attrs<AvailabilityAttr>()) {
  26       StringRef Domain = Attr->getPlatform()->getName();
  27       auto *Availability =
  28           llvm::find_if(Availabilities, [Domain](const AvailabilityInfo &Info) {
  29             return Domain.equals(Info.Domain);
  30           });
  31       if (Availability != Availabilities.end()) {
  32         // Get the highest introduced version for all redeclarations.
  33         if (Availability->Introduced < Attr->getIntroduced())
  34           Availability->Introduced = Attr->getIntroduced();
  35
  36         // Get the lowest deprecated version for all redeclarations.
  37         if (Availability->Deprecated > Attr->getDeprecated())
  38           Availability->Deprecated = Attr->getDeprecated();
  39
  40         // Get the lowest obsoleted version for all redeclarations.
  41         if (Availability->Obsoleted > Attr->getObsoleted())
  42           Availability->Obsoleted = Attr->getObsoleted();
  43       } else {
  44         Availabilities.emplace_back(Domain, Attr->getIntroduced(),
  45                                     Attr->getDeprecated(), Attr->getObsoleted(),
  46                                     Attr->getUnavailable());
  47       }
  48     }
  49   }
  50 }