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 18252723Sdim#include "clang/Basic/LLVM.h" 19202879Srdivacky#include "llvm/ADT/Twine.h" 20202879Srdivacky#include "llvm/Support/raw_ostream.h" 21202879Srdivacky 22202879Srdivackynamespace clang { 23202879Srdivacky 24202879Srdivackyclass MacroBuilder { 25226890Sdim raw_ostream &Out; 26202879Srdivackypublic: 27226890Sdim MacroBuilder(raw_ostream &Output) : Out(Output) {} 28202879Srdivacky 29245431Sdim /// Append a \#define line for macro of the form "\#define Name Value\n". 30226890Sdim void defineMacro(const Twine &Name, const Twine &Value = "1") { 31202879Srdivacky Out << "#define " << Name << ' ' << Value << '\n'; 32202879Srdivacky } 33202879Srdivacky 34245431Sdim /// Append a \#undef line for Name. Name should be of the form XXX 35245431Sdim /// and we emit "\#undef XXX". 36226890Sdim void undefineMacro(const Twine &Name) { 37202879Srdivacky Out << "#undef " << Name << '\n'; 38202879Srdivacky } 39202879Srdivacky 40202879Srdivacky /// Directly append Str and a newline to the underlying buffer. 41226890Sdim void append(const Twine &Str) { 42202879Srdivacky Out << Str << '\n'; 43202879Srdivacky } 44202879Srdivacky}; 45202879Srdivacky 46202879Srdivacky} // end namespace clang 47202879Srdivacky 48202879Srdivacky#endif 49