| //===-- Demangle.cpp - Common demangling functions ------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file This file contains definitions of common demangling functions. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/Demangle/Demangle.h" |
| #include "llvm/Demangle/StringViewExtras.h" |
| #include <cstdlib> |
| #include <string_view> |
| |
| using llvm::itanium_demangle::starts_with; |
| |
| std::string llvm::demangle(std::string_view MangledName) { |
| std::string Result; |
| |
| if (nonMicrosoftDemangle(MangledName, Result)) |
| return Result; |
| |
| if (starts_with(MangledName, '_') && |
| nonMicrosoftDemangle(MangledName.substr(1), Result)) |
| return Result; |
| |
| if (char *Demangled = microsoftDemangle(MangledName, nullptr, nullptr)) { |
| Result = Demangled; |
| std::free(Demangled); |
| } else { |
| Result = MangledName; |
| } |
| return Result; |
| } |
| |
| static bool isItaniumEncoding(std::string_view S) { |
| // Itanium encoding requires 1 or 3 leading underscores, followed by 'Z'. |
| return starts_with(S, "_Z") || starts_with(S, "___Z"); |
| } |
| |
| static bool isRustEncoding(std::string_view S) { return starts_with(S, "_R"); } |
| |
| static bool isDLangEncoding(std::string_view S) { return starts_with(S, "_D"); } |
| |
| bool llvm::nonMicrosoftDemangle(std::string_view MangledName, |
| std::string &Result) { |
| char *Demangled = nullptr; |
| if (isItaniumEncoding(MangledName)) |
| Demangled = itaniumDemangle(MangledName); |
| else if (isRustEncoding(MangledName)) |
| Demangled = rustDemangle(MangledName); |
| else if (isDLangEncoding(MangledName)) |
| Demangled = dlangDemangle(MangledName); |
| |
| if (!Demangled) |
| return false; |
| |
| Result = Demangled; |
| std::free(Demangled); |
| return true; |
| } |