1//===- Demangle.cpp -------------------------------------------------------===//
2//
3//                     The MCLinker Project
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9#include "mcld/Config/Config.h"
10#include "mcld/Support/CXADemangle.tcc"
11#include "mcld/Support/Demangle.h"
12
13#ifdef HAVE_CXXABI_H
14#include <cxxabi.h>
15#endif
16
17namespace mcld {
18
19std::string demangleName(const std::string& pName) {
20#ifdef HAVE_CXXABI_H
21  // Spoil names of symbols with C linkage, so use an heuristic approach to
22  // check if the name should be demangled.
23  if (pName.substr(0, 2) != "_Z")
24    return pName;
25  // __cxa_demangle needs manually handle the memory release, so we wrap
26  // it into this helper function.
27  size_t output_leng;
28  int status;
29  char* buffer =
30      abi::__cxa_demangle(pName.c_str(), /*buffer=*/0, &output_leng, &status);
31  if (status != 0) {  // Failed
32    return pName;
33  }
34  std::string result(buffer);
35  free(buffer);
36
37  return result;
38#else
39  return pName;
40#endif
41}
42
43bool isCtorOrDtor(const char* pName, size_t pLength) {
44  arena<bs> a;
45  Db db(a);
46  db.cv = 0;
47  db.ref = 0;
48  db.encoding_depth = 0;
49  db.parsed_ctor_dtor_cv = false;
50  db.tag_templates = true;
51  db.template_param.emplace_back(a);
52  db.fix_forward_references = false;
53  db.try_to_parse_template_args = true;
54  int internal_status = success;
55  demangle(pName, pName + pLength, db, internal_status);
56  if (internal_status == success && db.fix_forward_references &&
57      !db.template_param.empty() && !db.template_param.front().empty()) {
58    db.fix_forward_references = false;
59    db.tag_templates = false;
60    db.names.clear();
61    db.subs.clear();
62    demangle(pName, pName + pLength, db, internal_status);
63    if (db.fix_forward_references)
64      internal_status = invalid_mangled_name;
65  }
66
67  if (internal_status != success) {
68    db.parsed_ctor_dtor_cv = false;
69  }
70  return db.parsed_ctor_dtor_cv;
71}
72
73}  // namespace mcld
74