xref: /freebsd/contrib/llvm-project/clang/lib/AST/Availability.cpp (revision b1879975794772ee51f0b4865753364c7d7626c3)
1 //===- Availability.cpp --------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 //
9 // This file implements the Availability information for Decls.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "clang/AST/Availability.h"
14 #include "clang/AST/ASTContext.h"
15 #include "clang/AST/Attr.h"
16 #include "clang/AST/Decl.h"
17 #include "clang/Basic/TargetInfo.h"
18 
19 namespace clang {
20 
21 AvailabilityInfo AvailabilityInfo::createFromDecl(const Decl *Decl) {
22   ASTContext &Context = Decl->getASTContext();
23   StringRef PlatformName = Context.getTargetInfo().getPlatformName();
24   AvailabilityInfo Availability;
25 
26   // Collect availability attributes from all redeclarations.
27   for (const auto *RD : Decl->redecls()) {
28     for (const auto *A : RD->specific_attrs<AvailabilityAttr>()) {
29       if (A->getPlatform()->getName() != PlatformName)
30         continue;
31       Availability = AvailabilityInfo(
32           A->getPlatform()->getName(), A->getIntroduced(), A->getDeprecated(),
33           A->getObsoleted(), A->getUnavailable(), false, false);
34       break;
35     }
36 
37     if (const auto *A = RD->getAttr<UnavailableAttr>())
38       if (!A->isImplicit())
39         Availability.UnconditionallyUnavailable = true;
40 
41     if (const auto *A = RD->getAttr<DeprecatedAttr>())
42       if (!A->isImplicit())
43         Availability.UnconditionallyDeprecated = true;
44   }
45   return Availability;
46 }
47 
48 } // namespace clang
49