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LLVMDemangle.cpp
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LLVMDemangle.cpp
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#include <cstdio>
#include <cstdlib>
#include <LLVMDemangle.h>
#include <llvm/Demangle/Demangle.h>
// This code is adapted from llvm/lib/Demangle/Demangle.cpp
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';
}
static char* nonMicrosoftDemangle(const char* MangledName) {
char* Demangled = nullptr;
if (isItaniumEncoding(MangledName))
Demangled = llvm::itaniumDemangle(MangledName, nullptr, nullptr, nullptr);
else if (isRustEncoding(MangledName))
Demangled = llvm::rustDemangle(MangledName, nullptr, nullptr, nullptr);
else if (isDLangEncoding(MangledName))
Demangled = llvm::dlangDemangle(MangledName);
return Demangled;
}
char* LLVMDemangle(const char* MangledName)
{
char* Demangled = nullptr;
if ((Demangled = nonMicrosoftDemangle(MangledName)))
return Demangled;
if (MangledName[0] == '_' && (Demangled = nonMicrosoftDemangle(MangledName + 1)))
return Demangled;
if ((Demangled = llvm::microsoftDemangle(MangledName, nullptr, nullptr, nullptr, nullptr)))
return Demangled;
return nullptr;
}
void LLVMDemangleFree(char* DemangledName)
{
std::free(DemangledName);
}