22a1aa5a43
This patch adds minimal support for D programming language demangling on LLVM core based on the D name mangling spec. This will allow easier integration on a future LLDB plugin for D either in the upstream tree or outside of it. Minimal support includes recognizing D demangling encoding and at least one mangling name, which in this case is `_Dmain` mangle. Reviewed By: jhenderson, lattner Differential Revision: https://reviews.llvm.org/D111414
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
//===--- DLangDemangle.cpp ------------------------------------------------===//
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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
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/// This file defines a demangler for the D programming language as specified
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/// in the ABI specification, available at:
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/// https://dlang.org/spec/abi.html#name_mangling
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///
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//===----------------------------------------------------------------------===//
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#include "llvm/Demangle/Demangle.h"
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#include "llvm/Demangle/Utility.h"
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#include <cstring>
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using namespace llvm;
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using llvm::itanium_demangle::OutputBuffer;
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char *llvm::dlangDemangle(const char *MangledName) {
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if (MangledName == nullptr || strncmp(MangledName, "_D", 2) != 0)
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return nullptr;
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OutputBuffer Demangled;
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if (!initializeOutputBuffer(nullptr, nullptr, Demangled, 1024))
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return nullptr;
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if (strcmp(MangledName, "_Dmain") == 0)
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Demangled << "D main";
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// OutputBuffer's internal buffer is not null terminated and therefore we need
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// to add it to comply with C null terminated strings.
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if (Demangled.getCurrentPosition() > 0) {
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Demangled << '\0';
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Demangled.setCurrentPosition(Demangled.getCurrentPosition() - 1);
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return Demangled.getBuffer();
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}
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return nullptr;
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}
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