utils/TableGen/ClangAttrEmitter.cpp

   1 //===- ClangAttrEmitter.cpp - Generate Clang attribute handling =-*- 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 // These tablegen backends emit Clang attribute processing code
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #include "ClangAttrEmitter.h"
  15 #include "Record.h"
  16 #include <algorithm>
  17
  18 using namespace llvm;
  19
  20 void ClangAttrClassEmitter::run(raw_ostream &OS) {
  21   OS << "// This file is generated by TableGen. Do not edit.\n\n";
  22   OS << "#ifndef LLVM_CLANG_ATTR_CLASSES_INC\n";
  23   OS << "#define LLVM_CLANG_ATTR_CLASSES_INC\n\n";
  24
  25   std::vector<Record*> Attrs = Records.getAllDerivedDefinitions("Attr");
  26
  27   for (std::vector<Record*>::iterator i = Attrs.begin(), e = Attrs.end();
  28        i != e; ++i) {
  29     Record &R = **i;
  30
  31     if (R.getValueAsBit("DoNotEmit"))
  32       continue;
  33
  34     OS << "class " << R.getName() << "Attr : public Attr {\n";
  35
  36     std::vector<Record*> Args = R.getValueAsListOfDefs("Args");
  37
  38     // FIXME: Handle arguments
  39     assert(Args.empty() && "Can't yet handle arguments");
  40
  41     OS << "\n public:\n";
  42     OS << "  " << R.getName() << "Attr(";
  43
  44     // Arguments go here
  45
  46     OS << ")\n";
  47     OS << "    : Attr(attr::" << R.getName() << ")";
  48
  49     // Arguments go here
  50
  51     OS << " {}\n\n";
  52
  53     OS << "  virtual Attr *clone (ASTContext &C) const;\n";
  54     OS << "  static bool classof(const Attr *A) { return A->getKind() == "
  55        << "attr::" << R.getName() << "; }\n";
  56     OS << "  static bool classof(const " << R.getName()
  57        << "Attr *) { return true; }\n";
  58     OS << "};\n\n";
  59   }
  60
  61   OS << "#endif\n";
  62 }
  63
  64 void ClangAttrListEmitter::run(raw_ostream &OS) {
  65   OS << "// This file is generated by TableGen. Do not edit.\n\n";
  66
  67   OS << "#ifndef LAST_ATTR\n";
  68   OS << "#define LAST_ATTR(NAME) ATTR(NAME)\n";
  69   OS << "#endif\n\n";
  70
  71   std::vector<Record*> Attrs = Records.getAllDerivedDefinitions("Attr");
  72   std::vector<Record*>::iterator i = Attrs.begin(), e = Attrs.end();
  73
  74   if (i != e) {
  75     // Move the end iterator back to emit the last attribute.
  76     for(--e; i != e; ++i)
  77       OS << "ATTR(" << (*i)->getName() << ")\n";
  78
  79     OS << "LAST_ATTR(" << (*i)->getName() << ")\n\n";
  80   }
  81
  82   OS << "#undef LAST_ATTR\n";
  83   OS << "#undef ATTR\n";
  84 }