clang/lib/Driver/DriverOptions.cpp

   1 //===--- DriverOptions.cpp - Driver Options Table -------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "clang/Driver/Options.h"
  10 #include "llvm/ADT/STLExtras.h"
  11 #include "llvm/Option/OptTable.h"
  12 #include "llvm/Option/Option.h"
  13 #include <cassert>
  14
  15 using namespace clang::driver;
  16 using namespace clang::driver::options;
  17 using namespace llvm::opt;
  18
  19 #define PREFIX(NAME, VALUE) static const char *const NAME[] = VALUE;
  20 #include "clang/Driver/Options.inc"
  21 #undef PREFIX
  22
  23 static const OptTable::Info InfoTable[] = {
  24 #define OPTION(PREFIX, NAME, ID, KIND, GROUP, ALIAS, ALIASARGS, FLAGS, PARAM,  \
  25                HELPTEXT, METAVAR, VALUES)                                      \
  26   {PREFIX, NAME,  HELPTEXT,    METAVAR,     OPT_##ID,  Option::KIND##Class,    \
  27    PARAM,  FLAGS, OPT_##GROUP, OPT_##ALIAS, ALIASARGS, VALUES},
  28 #include "clang/Driver/Options.inc"
  29 #undef OPTION
  30 };
  31
  32 namespace {
  33
  34 class DriverOptTable : public OptTable {
  35 public:
  36   DriverOptTable()
  37     : OptTable(InfoTable) {}
  38 };
  39
  40 }
  41
  42 const llvm::opt::OptTable &clang::driver::getDriverOptTable() {
  43   static const DriverOptTable *Table = []() {
  44     auto Result = std::make_unique<DriverOptTable>();
  45     // Options.inc is included in DriverOptions.cpp, and calls OptTable's
  46     // addValues function.
  47     // Opt is a variable used in the code fragment in Options.inc.
  48     OptTable &Opt = *Result;
  49 #define OPTTABLE_ARG_INIT
  50 #include "clang/Driver/Options.inc"
  51 #undef OPTTABLE_ARG_INIT
  52     return Result.release();
  53   }();
  54   return *Table;
  55 }