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a8b1d6117d
The llvm::demangle is currently used by llvm-objdump and llvm-readobj, so this effectively adds support for Rust v0 mangling to those applications. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D104340
44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
//===-- Demangle.cpp - Common demangling functions ------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file This file contains definitions of common demangling functions.
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///
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//===----------------------------------------------------------------------===//
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#include "llvm/Demangle/Demangle.h"
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#include <cstdlib>
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static bool isItaniumEncoding(const std::string &MangledName) {
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size_t Pos = MangledName.find_first_not_of('_');
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// A valid Itanium encoding requires 1-4 leading underscores, followed by 'Z'.
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return Pos > 0 && Pos <= 4 && MangledName[Pos] == 'Z';
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}
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static bool isRustEncoding(const std::string &MangledName) {
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return MangledName.size() >= 2 && MangledName[0] == '_' &&
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MangledName[1] == 'R';
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}
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std::string llvm::demangle(const std::string &MangledName) {
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char *Demangled;
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if (isItaniumEncoding(MangledName))
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Demangled = itaniumDemangle(MangledName.c_str(), nullptr, nullptr, nullptr);
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else if (isRustEncoding(MangledName))
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Demangled = rustDemangle(MangledName.c_str(), nullptr, nullptr, nullptr);
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else
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Demangled = microsoftDemangle(MangledName.c_str(), nullptr, nullptr,
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nullptr, nullptr);
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if (!Demangled)
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return MangledName;
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std::string Ret = Demangled;
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std::free(Demangled);
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return Ret;
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}
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