1 //===- TableGenBackend.cpp - Utilities for TableGen Backends ----*- 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 provides useful services for TableGen backends... 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "llvm/ADT/Twine.h" 15 #include "llvm/Support/raw_ostream.h" 16 #include "llvm/TableGen/TableGenBackend.h" 17 using namespace llvm; 18 19 static void printLine(raw_ostream &OS, const Twine &Prefix, char Fill, 20 StringRef Suffix) { 21 uint64_t Pos = OS.tell(); 22 OS << Prefix; 23 for (unsigned i = OS.tell() - Pos, e = 80 - Suffix.size(); i != e; ++i) 24 OS << Fill; 25 OS << Suffix << '\n'; 26 } 27 28 void llvm::emitSourceFileHeader(StringRef Desc, raw_ostream &OS) { 29 printLine(OS, "/*===- TableGen'erated file ", '-', "*- C++ -*-===*\\"); 30 printLine(OS, "|*", ' ', "*|"); 31 printLine(OS, "|* " + Desc, ' ', "*|"); 32 printLine(OS, "|*", ' ', "*|"); 33 printLine(OS, "|* Automatically generated file, do not edit!", ' ', "*|"); 34 printLine(OS, "|*", ' ', "*|"); 35 printLine(OS, "\\*===", '-', "===*/"); 36 OS << '\n'; 37 } 38
