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 = microsoftDemangle(MangledName.c_str(), nullptr, nullptr, 28 nullptr, nullptr); 29 30 if (!Demangled) 31 return MangledName; 32 33 std::string Ret = Demangled; 34 free(Demangled); 35 return Ret; 36 } 37