utils/TableGen/ClangASTNodesEmitter.h

   1 //===- ClangASTNodesEmitter.h - Generate Clang AST node tables -*- 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 AST node tables
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef CLANGAST_EMITTER_H
  15 #define CLANGAST_EMITTER_H
  16
  17 #include "TableGenBackend.h"
  18 #include "Record.h"
  19 #include <string>
  20 #include <cctype>
  21 #include <map>
  22
  23 namespace llvm {
  24
  25 /// ClangASTNodesEmitter - The top-level class emits .inc files containing
  26 ///  declarations of Clang statements.
  27 ///
  28 class ClangASTNodesEmitter : public TableGenBackend {
  29   // A map from a node to each of its derived nodes.
  30   typedef std::multimap<Record*, Record*> ChildMap;
  31   typedef ChildMap::const_iterator ChildIterator;
  32
  33   RecordKeeper &Records;
  34   Record Root;
  35   const std::string &BaseSuffix;
  36
  37   // Create a macro-ized version of a name
  38   static std::string macroName(std::string S) {
  39     for (unsigned i = 0; i < S.size(); ++i)
  40       S[i] = std::toupper(S[i]);
  41
  42     return S;
  43   }
  44
  45   // Return the name to be printed in the base field. Normally this is
  46   // the record's name plus the base suffix, but if it is the root node and
  47   // the suffix is non-empty, it's just the suffix.
  48   std::string baseName(Record &R) {
  49     if (&R == &Root && !BaseSuffix.empty())
  50       return BaseSuffix;
  51
  52     return R.getName() + BaseSuffix;
  53   }
  54
  55   std::pair<Record *, Record *> EmitNode (const ChildMap &Tree, raw_ostream& OS,
  56                                           Record *Base);
  57 public:
  58   explicit ClangASTNodesEmitter(RecordKeeper &R, const std::string &N,
  59                                 const std::string &S)
  60     : Records(R), Root(N, SMLoc(), R), BaseSuffix(S)
  61     {}
  62
  63   // run - Output the .inc file contents
  64   void run(raw_ostream &OS);
  65 };
  66
  67 /// ClangDeclContextEmitter - Emits an addendum to a .inc file to enumerate the
  68 /// clang declaration contexts.
  69 ///
  70 class ClangDeclContextEmitter : public TableGenBackend {
  71   RecordKeeper &Records;
  72
  73 public:
  74   explicit ClangDeclContextEmitter(RecordKeeper &R)
  75     : Records(R)
  76   {}
  77
  78   // run - Output the .inc file contents
  79   void run(raw_ostream &OS);
  80 };
  81
  82 } // End llvm namespace
  83
  84 #endif