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
19namespace clang {
20
21AvailabilityInfo 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