1 //===- Symbol.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 Symbol.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/TextAPI/Symbol.h"
14 #include <string>
15 
16 namespace llvm {
17 namespace MachO {
18 
19 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
20 LLVM_DUMP_METHOD void Symbol::dump(raw_ostream &OS) const {
21   std::string Result;
22   if (isUndefined())
23     Result += "(undef) ";
24   if (isWeakDefined())
25     Result += "(weak-def) ";
26   if (isWeakReferenced())
27     Result += "(weak-ref) ";
28   if (isThreadLocalValue())
29     Result += "(tlv) ";
30   switch (Kind) {
31   case SymbolKind::GlobalSymbol:
32     Result += Name.str();
33     break;
34   case SymbolKind::ObjectiveCClass:
35     Result += "(ObjC Class) " + Name.str();
36     break;
37   case SymbolKind::ObjectiveCClassEHType:
38     Result += "(ObjC Class EH) " + Name.str();
39     break;
40   case SymbolKind::ObjectiveCInstanceVariable:
41     Result += "(ObjC IVar) " + Name.str();
42     break;
43   }
44   OS << Result;
45 }
46 #endif
47 
48 Symbol::const_filtered_target_range
49 Symbol::targets(ArchitectureSet Architectures) const {
50   std::function<bool(const Target &)> FN =
51       [Architectures](const Target &Target) {
52         return Architectures.has(Target.Arch);
53       };
54   return make_filter_range(Targets, FN);
55 }
56 
57 bool Symbol::operator==(const Symbol &O) const {
58   // Older Tapi files do not express all these symbol flags. In those
59   // cases, ignore those differences.
60   auto RemoveFlag = [](const Symbol &Sym, SymbolFlags &Flag) {
61     if (Sym.isData())
62       Flag &= ~SymbolFlags::Data;
63     if (Sym.isText())
64       Flag &= ~SymbolFlags::Text;
65   };
66   SymbolFlags LHSFlags = Flags;
67   SymbolFlags RHSFlags = O.Flags;
68   // Ignore Text and Data for now.
69   RemoveFlag(*this, LHSFlags);
70   RemoveFlag(O, RHSFlags);
71   return std::tie(Name, Kind, Targets, LHSFlags) ==
72          std::tie(O.Name, O.Kind, O.Targets, RHSFlags);
73 }
74 
75 } // end namespace MachO.
76 } // end namespace llvm.
77