LLVM  10.0.0svn
Demangle.cpp
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1 //===-- Demangle.cpp - Common demangling functions ------------------------===//
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 /// \file This file contains definitions of common demangling functions.
10 ///
11 //===----------------------------------------------------------------------===//
12 
13 #include "llvm/Demangle/Demangle.h"
14 #include <cstdlib>
15 
16 static bool isItaniumEncoding(const std::string &MangledName) {
17  size_t Pos = MangledName.find_first_not_of('_');
18  // A valid Itanium encoding requires 1-4 leading underscores, followed by 'Z'.
19  return Pos > 0 && Pos <= 4 && MangledName[Pos] == 'Z';
20 }
21 
22 std::string llvm::demangle(const std::string &MangledName) {
23  char *Demangled;
24  if (isItaniumEncoding(MangledName))
25  Demangled = itaniumDemangle(MangledName.c_str(), nullptr, nullptr, nullptr);
26  else
27  Demangled =
28  microsoftDemangle(MangledName.c_str(), nullptr, nullptr, nullptr);
29 
30  if (!Demangled)
31  return MangledName;
32 
33  std::string Ret = Demangled;
34  free(Demangled);
35  return Ret;
36 }
char * itaniumDemangle(const char *mangled_name, char *buf, size_t *n, int *status)
std::string demangle(const std::string &MangledName)
Attempt to demangle a string using different demangling schemes.
Definition: Demangle.cpp:22
static bool isItaniumEncoding(const std::string &MangledName)
Definition: Demangle.cpp:16
char * microsoftDemangle(const char *mangled_name, char *buf, size_t *n, int *status, MSDemangleFlags Flags=MSDF_None)