1//===- RecordVisitor.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/// Implements the TAPI Record Visitor.
10///
11//===----------------------------------------------------------------------===//
12
13#include "llvm/TextAPI/RecordVisitor.h"
14
15using namespace llvm;
16using namespace llvm::MachO;
17
18RecordVisitor::~RecordVisitor() {}
19void RecordVisitor::visitObjCInterface(const ObjCInterfaceRecord &) {}
20void RecordVisitor::visitObjCCategory(const ObjCCategoryRecord &) {}
21
22static bool shouldSkipRecord(const Record &R, const bool RecordUndefs) {
23 if (R.isExported())
24 return false;
25
26 // Skip non exported symbols unless for flat namespace libraries.
27 return !(RecordUndefs && R.isUndefined());
28}
29
30void SymbolConverter::visitGlobal(const GlobalRecord &GR) {
31 auto [SymName, SymKind, InterfaceType] = parseSymbol(SymName: GR.getName());
32 if (shouldSkipRecord(R: GR, RecordUndefs))
33 return;
34 Symbols->addGlobal(Kind: SymKind, Name: SymName, Flags: GR.getFlags(), Targ);
35
36 if (InterfaceType == ObjCIFSymbolKind::None) {
37 Symbols->addGlobal(Kind: SymKind, Name: SymName, Flags: GR.getFlags(), Targ);
38 return;
39 }
40
41 // It is impossible to hold a complete ObjCInterface with a single
42 // GlobalRecord, so continue to treat this symbol a generic global.
43 Symbols->addGlobal(Kind: EncodeKind::GlobalSymbol, Name: GR.getName(), Flags: GR.getFlags(),
44 Targ);
45}
46
47void SymbolConverter::addIVars(const ArrayRef<ObjCIVarRecord *> IVars,
48 StringRef ContainerName) {
49 for (auto *IV : IVars) {
50 if (shouldSkipRecord(R: *IV, RecordUndefs))
51 continue;
52 std::string Name =
53 ObjCIVarRecord::createScopedName(SuperClass: ContainerName, IVar: IV->getName());
54 Symbols->addGlobal(Kind: EncodeKind::ObjectiveCInstanceVariable, Name,
55 Flags: IV->getFlags(), Targ);
56 }
57}
58
59void SymbolConverter::visitObjCInterface(const ObjCInterfaceRecord &ObjCR) {
60 if (!shouldSkipRecord(R: ObjCR, RecordUndefs)) {
61 if (ObjCR.isCompleteInterface()) {
62 Symbols->addGlobal(Kind: EncodeKind::ObjectiveCClass, Name: ObjCR.getName(),
63 Flags: ObjCR.getFlags(), Targ);
64 if (ObjCR.hasExceptionAttribute())
65 Symbols->addGlobal(Kind: EncodeKind::ObjectiveCClassEHType, Name: ObjCR.getName(),
66 Flags: ObjCR.getFlags(), Targ);
67 } else {
68 // Because there is not a complete interface, visit individual symbols
69 // instead.
70 if (ObjCR.isExportedSymbol(CurrType: ObjCIFSymbolKind::EHType))
71 Symbols->addGlobal(Kind: EncodeKind::GlobalSymbol,
72 Name: (ObjC2EHTypePrefix + ObjCR.getName()).str(),
73 Flags: ObjCR.getFlags(), Targ);
74 if (ObjCR.isExportedSymbol(CurrType: ObjCIFSymbolKind::Class))
75 Symbols->addGlobal(Kind: EncodeKind::GlobalSymbol,
76 Name: (ObjC2ClassNamePrefix + ObjCR.getName()).str(),
77 Flags: ObjCR.getFlags(), Targ);
78 if (ObjCR.isExportedSymbol(CurrType: ObjCIFSymbolKind::MetaClass))
79 Symbols->addGlobal(Kind: EncodeKind::GlobalSymbol,
80 Name: (ObjC2MetaClassNamePrefix + ObjCR.getName()).str(),
81 Flags: ObjCR.getFlags(), Targ);
82 }
83 }
84
85 addIVars(IVars: ObjCR.getObjCIVars(), ContainerName: ObjCR.getName());
86 for (const auto *Cat : ObjCR.getObjCCategories())
87 addIVars(IVars: Cat->getObjCIVars(), ContainerName: ObjCR.getName());
88}
89
90void SymbolConverter::visitObjCCategory(const ObjCCategoryRecord &Cat) {
91 addIVars(IVars: Cat.getObjCIVars(), ContainerName: Cat.getSuperClassName());
92}
93