MacroBuilder.h revision 245431
1202879Srdivacky//===--- MacroBuilder.h - CPP Macro building utility ------------*- C++ -*-===// 2202879Srdivacky// 3202879Srdivacky// The LLVM Compiler Infrastructure 4202879Srdivacky// 5202879Srdivacky// This file is distributed under the University of Illinois Open Source 6202879Srdivacky// License. See LICENSE.TXT for details. 7202879Srdivacky// 8202879Srdivacky//===----------------------------------------------------------------------===// 9245431Sdim/// 10245431Sdim/// \file 11245431Sdim/// \brief Defines the clang::MacroBuilder utility class. 12245431Sdim/// 13202879Srdivacky//===----------------------------------------------------------------------===// 14202879Srdivacky 15202879Srdivacky#ifndef LLVM_CLANG_BASIC_MACROBUILDER_H 16202879Srdivacky#define LLVM_CLANG_BASIC_MACROBUILDER_H 17202879Srdivacky 18202879Srdivacky#include "llvm/ADT/Twine.h" 19202879Srdivacky#include "llvm/Support/raw_ostream.h" 20202879Srdivacky 21202879Srdivackynamespace clang { 22202879Srdivacky 23202879Srdivackyclass MacroBuilder { 24226890Sdim raw_ostream &Out; 25202879Srdivackypublic: 26226890Sdim MacroBuilder(raw_ostream &Output) : Out(Output) {} 27202879Srdivacky 28245431Sdim /// Append a \#define line for macro of the form "\#define Name Value\n". 29226890Sdim void defineMacro(const Twine &Name, const Twine &Value = "1") { 30202879Srdivacky Out << "#define " << Name << ' ' << Value << '\n'; 31202879Srdivacky } 32202879Srdivacky 33245431Sdim /// Append a \#undef line for Name. Name should be of the form XXX 34245431Sdim /// and we emit "\#undef XXX". 35226890Sdim void undefineMacro(const Twine &Name) { 36202879Srdivacky Out << "#undef " << Name << '\n'; 37202879Srdivacky } 38202879Srdivacky 39202879Srdivacky /// Directly append Str and a newline to the underlying buffer. 40226890Sdim void append(const Twine &Str) { 41202879Srdivacky Out << Str << '\n'; 42202879Srdivacky } 43202879Srdivacky}; 44202879Srdivacky 45202879Srdivacky} // end namespace clang 46202879Srdivacky 47202879Srdivacky#endif 48