1 //===- Strings.cpp -------------------------------------------------------===//
2 //
3 //                             The LLVM Linker
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "lld/Common/Strings.h"
11 #include "llvm/Demangle/Demangle.h"
12 
13 using namespace llvm;
14 using namespace lld;
15 
16 // Returns the demangled C++ symbol name for Name.
17 Optional<std::string> lld::demangleItanium(StringRef Name) {
18   // itaniumDemangle can be used to demangle strings other than symbol
19   // names which do not necessarily start with "_Z". Name can be
20   // either a C or C++ symbol. Don't call itaniumDemangle if the name
21   // does not look like a C++ symbol name to avoid getting unexpected
22   // result for a C symbol that happens to match a mangled type name.
23   if (!Name.startswith("_Z"))
24     return None;
25 
26   char *Buf = itaniumDemangle(Name.str().c_str(), nullptr, nullptr, nullptr);
27   if (!Buf)
28     return None;
29   std::string S(Buf);
30   free(Buf);
31   return S;
32 }
33