| 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 | |
| 21 | namespace clang { |
| 22 | |
| 23 | class MacroBuilder { |
| 24 | raw_ostream &Out; |
| 25 | public: |
| 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 |