65 lines
1.9 KiB
C++
Vendored
65 lines
1.9 KiB
C++
Vendored
//===-- 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 <cstdlib>
|
|
#include <cstring>
|
|
|
|
static bool isItaniumEncoding(const char *S) {
|
|
// Itanium encoding requires 1 or 3 leading underscores, followed by 'Z'.
|
|
return std::strncmp(S, "_Z", 2) == 0 || std::strncmp(S, "___Z", 4) == 0;
|
|
}
|
|
|
|
static bool isRustEncoding(const char *S) { return S[0] == '_' && S[1] == 'R'; }
|
|
|
|
static bool isDLangEncoding(const std::string &MangledName) {
|
|
return MangledName.size() >= 2 && MangledName[0] == '_' &&
|
|
MangledName[1] == 'D';
|
|
}
|
|
|
|
std::string llvm::demangle(const std::string &MangledName) {
|
|
std::string Result;
|
|
const char *S = MangledName.c_str();
|
|
|
|
if (nonMicrosoftDemangle(S, Result))
|
|
return Result;
|
|
|
|
if (S[0] == '_' && nonMicrosoftDemangle(S + 1, Result))
|
|
return Result;
|
|
|
|
if (char *Demangled =
|
|
microsoftDemangle(S, nullptr, nullptr, nullptr, nullptr)) {
|
|
Result = Demangled;
|
|
std::free(Demangled);
|
|
return Result;
|
|
}
|
|
|
|
return MangledName;
|
|
}
|
|
|
|
bool llvm::nonMicrosoftDemangle(const char *MangledName, std::string &Result) {
|
|
char *Demangled = nullptr;
|
|
if (isItaniumEncoding(MangledName))
|
|
Demangled = itaniumDemangle(MangledName, nullptr, nullptr, nullptr);
|
|
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;
|
|
}
|