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 // This file defines the MacroBuilder utility class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_CLANG_BASIC_MACROBUILDER_H 15 #define LLVM_CLANG_BASIC_MACROBUILDER_H 16 17 #include "llvm/ADT/Twine.h" 18 #include "llvm/Support/raw_ostream.h" 19 20 namespace clang { 21 22 class MacroBuilder { 23 llvm::raw_ostream &Out; 24 public: 25 MacroBuilder(llvm::raw_ostream &Output) : Out(Output) {} 26 27 /// Append a #define line for macro of the form "#define Name Value\n". 28 void defineMacro(const llvm::Twine &Name, const llvm::Twine &Value = "1") { 29 Out << "#define " << Name << ' ' << Value << '\n'; 30 } 31 32 /// Append a #undef line for Name. Name should be of the form XXX 33 /// and we emit "#undef XXX". 34 void undefineMacro(const llvm::Twine &Name) { 35 Out << "#undef " << Name << '\n'; 36 } 37 38 /// Directly append Str and a newline to the underlying buffer. 39 void append(const llvm::Twine &Str) { 40 Out << Str << '\n'; 41 } 42 }; 43 44 } // end namespace clang 45 46 #endif 47
