contrib/llvm/tools/clang/utils/TableGen/ClangCommentCommandInfoEmitter.cpp

   1 //===--- ClangCommentCommandInfoEmitter.cpp - Generate command lists -----====//
   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 tablegen backend emits command lists and efficient matchers command
  11 // names that are used in documentation comments.
  12 //
  13 //===----------------------------------------------------------------------===//
  14
  15 #include "llvm/TableGen/Record.h"
  16 #include "llvm/TableGen/StringMatcher.h"
  17 #include <vector>
  18
  19 using namespace llvm;
  20
  21 namespace clang {
  22 void EmitClangCommentCommandInfo(RecordKeeper &Records, raw_ostream &OS) {
  23   OS << "// This file is generated by TableGen.  Do not edit.\n\n";
  24
  25   OS << "namespace {\n"
  26         "const CommandInfo Commands[] = {\n";
  27   std::vector<Record *> Tags = Records.getAllDerivedDefinitions("Command");
  28   for (size_t i = 0, e = Tags.size(); i != e; ++i) {
  29     Record &Tag = *Tags[i];
  30     OS << "  { "
  31        << "\"" << Tag.getValueAsString("Name") << "\", "
  32        << "\"" << Tag.getValueAsString("EndCommandName") << "\", "
  33        << i << ", "
  34        << Tag.getValueAsInt("NumArgs") << ", "
  35        << Tag.getValueAsBit("IsInlineCommand") << ", "
  36        << Tag.getValueAsBit("IsBlockCommand") << ", "
  37        << Tag.getValueAsBit("IsBriefCommand") << ", "
  38        << Tag.getValueAsBit("IsReturnsCommand") << ", "
  39        << Tag.getValueAsBit("IsParamCommand") << ", "
  40        << Tag.getValueAsBit("IsTParamCommand") << ", "
  41        << Tag.getValueAsBit("IsDeprecatedCommand") << ", "
  42        << Tag.getValueAsBit("IsEmptyParagraphAllowed") << ", "
  43        << Tag.getValueAsBit("IsVerbatimBlockCommand") << ", "
  44        << Tag.getValueAsBit("IsVerbatimBlockEndCommand") << ", "
  45        << Tag.getValueAsBit("IsVerbatimLineCommand") << ", "
  46        << Tag.getValueAsBit("IsDeclarationCommand") << ", "
  47        << /* IsUnknownCommand = */ "0"
  48        << " }";
  49     if (i + 1 != e)
  50       OS << ",";
  51     OS << "\n";
  52   }
  53   OS << "};\n"
  54         "} // unnamed namespace\n\n";
  55
  56   std::vector<StringMatcher::StringPair> Matches;
  57   for (size_t i = 0, e = Tags.size(); i != e; ++i) {
  58     Record &Tag = *Tags[i];
  59     std::string Name = Tag.getValueAsString("Name");
  60     std::string Return;
  61     raw_string_ostream(Return) << "return &Commands[" << i << "];";
  62     Matches.push_back(StringMatcher::StringPair(Name, Return));
  63   }
  64
  65   OS << "const CommandInfo *CommandTraits::getBuiltinCommandInfo(\n"
  66      << "                                         StringRef Name) {\n";
  67   StringMatcher("Name", Matches, OS).Emit();
  68   OS << "  return NULL;\n"
  69      << "}\n\n";
  70 }
  71 } // end namespace clang
  72