1 //===--- MacroBuilder.h - CPP Macro building utility ------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief Defines the clang::MacroBuilder utility class. 12 /// 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CLANG_BASIC_MACROBUILDER_H 16 #define LLVM_CLANG_BASIC_MACROBUILDER_H 17 18 #include "clang/Basic/LLVM.h" 19 #include "llvm/ADT/Twine.h" 20 #include "llvm/Support/raw_ostream.h" 21 22 namespace clang { 23 24 class MacroBuilder { 25 raw_ostream &Out; 26 public: 27 MacroBuilder(raw_ostream &Output) : Out(Output) {} 28 29 /// Append a \#define line for macro of the form "\#define Name Value\n". 30 void defineMacro(const Twine &Name, const Twine &Value = "1") { 31 Out << "#define " << Name << ' ' << Value << '\n'; 32 } 33 34 /// Append a \#undef line for Name. Name should be of the form XXX 35 /// and we emit "\#undef XXX". 36 void undefineMacro(const Twine &Name) { 37 Out << "#undef " << Name << '\n'; 38 } 39 40 /// Directly append Str and a newline to the underlying buffer. 41 void append(const Twine &Str) { 42 Out << Str << '\n'; 43 } 44 }; 45 46 } // end namespace clang 47 48 #endif 49
