54 lines
1.6 KiB
C++
54 lines
1.6 KiB
C++
//===--- MacroBuilder.h - CPP Macro building utility ------------*- C++ -*-===//
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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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/// Defines the clang::MacroBuilder utility class.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_BASIC_MACROBUILDER_H
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#define LLVM_CLANG_BASIC_MACROBUILDER_H
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#include "clang/Basic/LLVM.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Support/raw_ostream.h"
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namespace clang {
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class MacroBuilder {
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raw_ostream &Out;
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public:
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MacroBuilder(raw_ostream &Output) : Out(Output) {}
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/// Append a \#define line for macro of the form "\#define Name Value\n".
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/// If DeprecationMsg is provided, also append a pragma to deprecate the
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/// defined macro.
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void defineMacro(const Twine &Name, const Twine &Value = "1",
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Twine DeprecationMsg = "") {
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Out << "#define " << Name << ' ' << Value << '\n';
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if (!DeprecationMsg.isTriviallyEmpty())
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Out << "#pragma clang deprecated(" << Name << ", \"" << DeprecationMsg
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<< "\")\n";
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}
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/// Append a \#undef line for Name. Name should be of the form XXX
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/// and we emit "\#undef XXX".
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void undefineMacro(const Twine &Name) {
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Out << "#undef " << Name << '\n';
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}
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/// Directly append Str and a newline to the underlying buffer.
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void append(const Twine &Str) {
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Out << Str << '\n';
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}
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};
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} // end namespace clang
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#endif
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