1//===--- MacroBuilder.h - CPP Macro building utility ------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// Defines the clang::MacroBuilder utility class.
11///
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_BASIC_MACROBUILDER_H
15#define LLVM_CLANG_BASIC_MACROBUILDER_H
16
17#include "clang/Basic/LLVM.h"
18#include "llvm/ADT/Twine.h"
19#include "llvm/Support/raw_ostream.h"
20
21namespace clang {
22
23class MacroBuilder {
24 raw_ostream &Out;
25public:
26 MacroBuilder(raw_ostream &Output) : Out(Output) {}
27
28 /// Append a \#define line for macro of the form "\#define Name Value\n".
29 void defineMacro(const Twine &Name, const Twine &Value = "1") {
30 Out << "#define " << Name << ' ' << Value << '\n';
31 }
32
33 /// Append a \#undef line for Name. Name should be of the form XXX
34 /// and we emit "\#undef XXX".
35 void undefineMacro(const Twine &Name) {
36 Out << "#undef " << Name << '\n';
37 }
38
39 /// Directly append Str and a newline to the underlying buffer.
40 void append(const Twine &Str) {
41 Out << Str << '\n';
42 }
43};
44
45} // end namespace clang
46
47#endif
48