Merge pull request #2301 from sonndinh/remove-dup-reactor-functions

[ACE_TAO.git] / TAO / TAO_IDL / driver / drv_args.cpp

/*

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This product is protected by copyright and distributed under the following
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The Interface Definition Language Compiler Front End (CFE) is made
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this product is incorporated in whole or part. You may copy and extend
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*/

// drv_args.cpp - Argument parsing for IDL compiler main driver

#include <string>

#include "idl_defines.h"
#include "global_extern.h"
#include "drv_extern.h"
#include "fe_extern.h"

#include "be_global.h"
#include "be_extern.h"
#include "be_util.h"

#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_stdlib.h"
#include "ace/OS_NS_unistd.h"
#include "ace/os_include/os_ctype.h"
#include "ace/Lib_Find.h"

extern long DRV_nfiles;
extern char *DRV_files[];

void process_long_option(long ac, char **av, long &i);

// Push a file into the list of files to be processed
void
DRV_push_file (const char *s)
{
  // If filenames come from the command line, there is no
  // need to duplicate the string, but some backends have
  // an option to recurse over a directory and add all
  // IDL files found. In this latter case we have to
  // duplicate the file name string.
  DRV_files[DRV_nfiles++] = ACE::strnew (s);
}

// Prepare a CPP argument
static void
DRV_prep_cpp_arg (char *s)
{
  std::string instr (s);
  std::string newarg;
  newarg.reserve (512);

  for (std::string::size_type pos = instr.find_first_of (',');
       pos != std::string::npos;
       instr = instr.substr (pos + 1), pos = instr.find_first_of (','))
    {
      newarg.append (instr.substr (0, pos));
    }

  DRV_cpp_putarg (newarg.c_str ());
}

// Print a usage message and exit.
void
DRV_usage ()
{
  ACE_DEBUG ((LM_DEBUG,
              ACE_TEXT ("%C: usage: %C [[flag|file] ...] [-- file ...]\n"),
              idl_global->prog_name (),
              idl_global->prog_name ()));

  ACE_DEBUG ((LM_DEBUG,
    ACE_TEXT ("Legal flags:\n")
    ACE_TEXT (" -h | --help | -u\tPrint this list and exit successfully\n")
    ACE_TEXT (" -A...\t\t\tlocal implementation-specific escape\n")
    ACE_TEXT (" -Cw\t\t\tWarning if identifier spellings differ ")
    ACE_TEXT ("only in case (default is error)\n")
    ACE_TEXT (" -Ce\t\t\tError if identifier spellings differ ")
    ACE_TEXT ("only in case (default)\n")
    ACE_TEXT (" -ae\t\t\tError if anonymous type is seen ")
    ACE_TEXT ("(default)\n")
    ACE_TEXT (" -aw\t\t\tWarning if anonymous type is seen ")
    ACE_TEXT ("(default is error)\n")
    ACE_TEXT (" -as\t\t\tSilences the anonymous type diagnostic ")
    ACE_TEXT ("(default is error)\n")
    ACE_TEXT (" -d | --dump\t\tPrints a dump of the AST and exits\n")
    ACE_TEXT (" -Dname[=value]\t\tdefines name for preprocessor\n")
    ACE_TEXT (" -E\t\t\truns preprocessor only, prints on stdout\n")
    ACE_TEXT (" -Idir\t\t\tincludes dir in search path for preprocessor\n")
    ACE_TEXT (" -t\t\t\tTemporary directory to be used")
    ACE_TEXT (" by the IDL compiler.\n")
    ACE_TEXT (" -Uname\t\t\tundefines name for preprocessor\n")
    ACE_TEXT (" -v\t\t\ttraces compilation stages\n")
    ACE_TEXT (" -V | --version\t\tprints version info then exits\n")
    ACE_TEXT (" -w\t\t\tsuppresses IDL compiler warning messages\n")
    ACE_TEXT (" -Wp,<arg1,...,argn>\tpasses args to preprocessor\n")
    ACE_TEXT (" -Yp,path\t\tdefines location of preprocessor\n")
    ACE_TEXT (" --idl-version VERSION\tSet the version of IDL to use\n")
    ACE_TEXT (" --default-idl-version\tPrint the default IDL version and exit\n")
    ACE_TEXT (" --list-idl-versions\tPrint IDL versions supported and exit\n")
    ACE_TEXT (" --syntax-only\t\tJust check the syntax, do not create files\n")
    ACE_TEXT (" --bison-trace\t\tEnable Bison Tracing (sets yydebug to 1)\n")
    ACE_TEXT (" --dump-builtins\tDump the compiler and user defined IDL.\n")
    ACE_TEXT (" --just-dump-builtins\tJust dump the compiler defined IDL and exit.\n")
    ACE_TEXT (" --unknown-annotations ARG\t")
      ACE_TEXT ("Set reaction to unknown annotations. ARG must be one of the following:\n")
    ACE_TEXT ("\t\t\t\twarn-once\tThe default, warn once per unique local name\n")
    ACE_TEXT ("\t\t\t\twarn-all\tWarn for all unknown annotations\n")
    ACE_TEXT ("\t\t\t\terror\t\tCauses the process to exit with a failed return status\n")
    ACE_TEXT ("\t\t\t\tignore\t\tDon't report unknown annotations\n")
  ));

  be_util::usage ();
}

#define UNKNOWN_OPTION \
  ACE_ERROR (( \
      LM_ERROR, \
      ACE_TEXT ("IDL: I don't understand") \
      ACE_TEXT (" the '%s' option\n"), \
      ACE_TEXT_CHAR_TO_TCHAR (av[i]) \
    )); \
  idl_global->parse_args_exit (1); \
  return;

// Parse arguments on command line
void
DRV_parse_args (long ac, char **av)
{
  ACE_CString buffer;
  char *s = nullptr;
  long i;

  // After -- process all arguments as files
  bool just_files = false;

  FE_store_env_include_paths ();
  DRV_cpp_init ();
  idl_global->set_prog_name (av[0]);

  for (i = 1; i < ac; i++)
    {
      if (!just_files && av[i][0] == '-')
        {
          idl_global->append_idl_flag (av[i]);

          switch (av[i][1])
            {
            case 0:
              // One or more letters expected after the dash.
              ACE_ERROR ((
                  LM_ERROR,
                  ACE_TEXT ("IDL: Space between dash and option ")
                  ACE_TEXT ("letters not allowed\n")
                ));
              idl_global->parse_args_exit (1);
              return;

            case 'A':
              if (av[i][2] == '\0')
                {
                  if (i < ac - 1)
                    {
                      s = av[i + 1];
                      ++i;
                    }
                  else
                    {
                      ACE_ERROR ((
                          LM_ERROR,
                          ACE_TEXT ("IDL: incorrect use of ")
                          ACE_TEXT ("the -A option\n")
                        ));
                      idl_global->parse_args_exit (1);
                      return;
                    }
                }
              else
                {
                  s = av[i] + 2;
                }

              ACE_OS::strcat (idl_global->local_escapes (), s);
              ACE_OS::strcat (idl_global->local_escapes (), " ");
              break;
            case 'a':
              if (av[i][2] == 'e')
                {
                  idl_global->anon_type_diagnostic (
                    IDL_GlobalData::ANON_TYPE_ERROR);
                }
              else if (av[i][2] == 'w')
                {
                  idl_global->anon_type_diagnostic (
                    IDL_GlobalData::ANON_TYPE_WARNING);
                }
              else if (av[i][2] == 's')
                {
                  idl_global->anon_type_diagnostic (
                    IDL_GlobalData::ANON_TYPE_SILENT);
                }
              else
                {
                  UNKNOWN_OPTION;
                }

               break;
            // Temp directory for the IDL compiler to keep its files.
            case 't':
              if ((av[i][2] == '\0') && (i < ac - 1))
                {
                  idl_global->append_idl_flag (av[i + 1]);
                  idl_global->temp_dir (av[i + 1]);
                  ++i;
                }
              else
                {
                  UNKNOWN_OPTION;
                }

              break;
            case 'D':
            case 'U':
            case 'I':
              if (av[i][2] == '\0')
                {
                  if (i < ac - 1)
                    {
                      idl_global->append_idl_flag (av[i + 1]);

                      ACE_CString arg = av[i];
                      arg += av[i + 1];

                      DRV_cpp_putarg (arg.c_str ());
                      idl_global->add_include_path (arg.substr (2).c_str (), false);
                      ++i;
                    }
                  else
                    {
                      UNKNOWN_OPTION;
                    }
                }
              else
                {
                  ACE_CString arg (av[i], 2);
                  arg += av[i] + 2;

                  idl_global->add_include_path (arg.substr (2).c_str (), false);
                  DRV_cpp_putarg (arg.c_str ());
                }

              break;
            case 'E':
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->set_compile_flags (idl_global->compile_flags () |
                                             IDL_CF_ONLY_PREPROC);
              break;
            case 'V':
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->print_version ();
              break;
            case 'W':
              if (av[i][2] == '\0')
                {
                  if (i < ac - 1)
                    {
                      s = av[i + 1];
                      ++i;
                    }
                  else
                    {
                      UNKNOWN_OPTION;
                    }
                }
              else
                {
                  s = av[i] + 2;
                }

              switch (*s)
                {
                default:
                  ACE_ERROR ((
                      LM_ERROR,
                      ACE_TEXT ("IDL: Incorrect use of -W option\n")
                    ));
                  idl_global->parse_args_exit (1);
                  return;

                case 'p':
                  if (*(s + 1) == ',')
                    {
                      DRV_prep_cpp_arg (s + 2);
                    }

                  break;
                case 'b':
                  if (*(s + 1) == ',')
                    {
                      be_util::prep_be_arg (s + 2);
                    }

                  break;
                }

              break;
            case 'Y':
              if (av[i][2] == '\0')
                {
                  if (i < ac - 1)
                    {
                      s = av[i + 1];
                      ++i;
                    }
                  else
                    {
                      UNKNOWN_OPTION;
                    }
                }
              else
                {
                  s = av[i] + 2;
                }

              switch (*s)
                {
                  case 'p':
                    if (*(s + 1) == ',')
                      {
                        idl_global->set_cpp_location (s + 2);
                        DRV_cpp_new_location (s + 2);
                      }
                    else
                      {
                        ACE_ERROR ((
                            LM_ERROR,
                            ACE_TEXT ("IDL: I don't understand")
                            ACE_TEXT (" the '-Y' option\n")
                          ));
                        idl_global->parse_args_exit (1);
                        return;
                      }

                    break;
                  default:
                    ACE_ERROR ((
                        LM_ERROR,
                        ACE_TEXT ("IDL: I dont' understand the use of")
                        ACE_TEXT (" %s with the '-Y' option\n"),
                        ACE_TEXT_CHAR_TO_TCHAR (s)
                      ));
                    idl_global->parse_args_exit (1);
                    return;
                }
              break;
            case 'd':
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->dump_ast ();
              break;
            case 'v':
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->set_compile_flags (idl_global->compile_flags ()
                                             | IDL_CF_INFORMATIVE);
              break;
            case 'w':
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->set_compile_flags (idl_global->compile_flags ()
                                             | IDL_CF_NOWARNINGS);
              break;
            case 'C':
              // If identifiers in the same scope differ only by case...
              if (av[i][2] == 'e')
                {
                  // ...report an error.
                  idl_global->case_diff_error (true);
                }
              else if (av[i][2] == 'w')
                {
                  // ...report a warning (default for now)
                  idl_global->case_diff_error (false);
                }
              else
                {
                  UNKNOWN_OPTION;
                }

              break;

            case 'u': // Old Help Option
              if (av[i][2] != '\0')
                {
                  UNKNOWN_OPTION;
                }
              idl_global->print_help ();
              break;

            case 'h': // Short Help Option, else let be_global process it
              if (av[i][2] == '\0') {
                idl_global->print_help ();
              } else {
                be_global->parse_args (i, av);
              }
              break;

            case '-': // -- or Long Options
              if (av[i][2] == '\0')
                {
                  just_files = true; // Treat the following arguments as files
                }
              else
                {
                  process_long_option(ac, av, i);
                }
              break;

            default:
              be_global->parse_args (i, av);
            } // End of switch (av[i][1])
        } // End of IF (av[i][0] == '-')
      else
        {
          DRV_push_file (av[i]);
        }

      if (idl_global->parse_args_exit_) return; // Catch Exits
    } // End of FOR (i = 1; i < ac; i++)

  be_util::arg_post_proc ();

  // Make sure the output directory is valid.
  if (idl_global->temp_dir () == nullptr)
    {
      ACE_TCHAR tmpdir[MAXPATHLEN + 1];

      if (ACE::get_temp_dir (tmpdir, MAXPATHLEN) == -1)
        {
          ACE_ERROR ((LM_ERROR,
                      ACE_TEXT ("Temporary path too long, ")
                      ACE_TEXT ("defaulting to current directory\n")));

          ACE_OS::strcpy (tmpdir, ACE_TEXT ("."));
        }

#if defined(ACE_MVS)
      if (ACE_OS::access (tmpdir, F_OK) == -1
          || ACE_OS::access (tmpdir, R_OK) == -1
          || ACE_OS::access (tmpdir, W_OK) == -1)
#else
      if (ACE_OS::access (tmpdir, F_OK | R_OK | W_OK) == -1)
#endif /* ACE_MVS */
        {
          ACE_ERROR ((
              LM_ERROR,
              ACE_TEXT ("Can't access temporary directory (%s),")
              ACE_TEXT (" using current directory for temp files.\n"),
              tmpdir
            ));

          ACE_OS::strcpy (tmpdir, ACE_TEXT ("."));
#if defined(ACE_MVS)
          if (ACE_OS::access (tmpdir, F_OK) == -1
              || ACE_OS::access (tmpdir, R_OK) == -1
              || ACE_OS::access (tmpdir, W_OK) == -1)
#else
          if (ACE_OS::access (tmpdir, F_OK | R_OK | W_OK) == -1)
#endif /* ACE_MVS */
            {
              ACE_ERROR ((LM_ERROR,
                          "Error: Can't access temporary directory %s\n",
                          tmpdir));

              throw Bailout ();
            }
        }

      idl_global->temp_dir (ACE_TEXT_ALWAYS_CHAR (tmpdir));
    }

  DRV_cpp_post_init ();
}

void
print_idl_versions()
{
  ACE_DEBUG ((LM_INFO,
    ACE_TEXT ("These are the valid IDL versions this compiler will accept:\n")
    ));
  for (int v = 1; v < IDL_VERSION_COUNT; v++)
    {
      ACE_DEBUG ((LM_INFO, ACE_TEXT ("%C\n"),
        IdlVersion (static_cast<SpecificIdlVersion>(v)).to_string ()
        ));
    }
}

void
process_long_option(long ac, char **av, long &i)
{
  const char *long_option = av[i] + 2;
  bool no_more_args = i + 1 >= ac;
  if (!ACE_OS::strcmp (long_option, "idl-version"))
    {
      bool invalid_version = no_more_args;
      if (no_more_args)
        {
          ACE_ERROR ((LM_ERROR,
            ACE_TEXT ("--idl-version is missing a required argument, ")
            ACE_TEXT ("the IDL version to use.\n")
            ));
        }
      else
        {
          idl_global->idl_version_.from_string (av[++i]);
          invalid_version = !idl_global->idl_version_.is_valid ();
          if (invalid_version)
            {
              ACE_ERROR ((LM_ERROR,
                ACE_TEXT ("\"%C\" is not a valid IDL version supported\n"),
                av[i]
                ));
            }
        }
      if (invalid_version)
        {
          print_idl_versions ();
          idl_global->parse_args_exit (1);
        }
    }
  else if (!ACE_OS::strcmp (long_option, "syntax-only"))
    {
      idl_global->syntax_only_ = true;
    }
  else if (!ACE_OS::strcmp (long_option, "default-idl-version"))
    {
      ACE_DEBUG ((LM_INFO, ACE_TEXT ("%C\n"),
        idl_global->default_idl_version_.to_string ()));
      idl_global->parse_args_exit (0);
    }
  else if (!ACE_OS::strcmp (long_option, "list-idl-versions"))
    {
      print_idl_versions ();
      idl_global->parse_args_exit (0);
    }
  else if (!ACE_OS::strcmp (long_option, "help"))
    {
      idl_global->print_help ();
    }
  else if (!ACE_OS::strcmp (long_option, "bison-trace"))
    {
      FE_yydebug (true);
    }
  else if (!ACE_OS::strcmp (long_option, "version"))
    {
      idl_global->print_version ();
    }
  else if (!ACE_OS::strcmp (long_option, "dump-builtins"))
    {
      idl_global->dump_builtins_ = true;
      idl_global->dump_ast ();
    }
  else if (!ACE_OS::strcmp (long_option, "just-dump-builtins"))
    {
      // Don't use dump_ast because we need to dump before parsing any files.
      idl_global->dump_builtins_ = true;
      idl_global->just_dump_builtins_ = true;
    }
  else if (!ACE_OS::strcmp (long_option, "dump"))
    {
      idl_global->dump_ast ();
    }
  else if (!ACE_OS::strcmp (long_option, "unknown-annotations"))
    {
      bool invalid_argument = no_more_args;
      if (no_more_args)
        {
          ACE_ERROR ((LM_ERROR,
            ACE_TEXT ("--unknown-annotations is missing its required argument.")
            ));
        }
      else
        {
          i++;
          if (!ACE_OS::strcmp (av[i], "warn-once"))
            {
              idl_global->unknown_annotations_ =
                IDL_GlobalData::UNKNOWN_ANNOTATIONS_WARN_ONCE;
            }
          else if (!ACE_OS::strcmp (av[i], "warn-all"))
            {
              idl_global->unknown_annotations_ =
                IDL_GlobalData::UNKNOWN_ANNOTATIONS_WARN_ALL;
            }
          else if (!ACE_OS::strcmp (av[i], "error"))
            {
              idl_global->unknown_annotations_ =
                IDL_GlobalData::UNKNOWN_ANNOTATIONS_ERROR;
            }
          else if (!ACE_OS::strcmp (av[i], "ignore"))
            {
              idl_global->unknown_annotations_ =
                IDL_GlobalData::UNKNOWN_ANNOTATIONS_IGNORE;
            }
          else
            {
              invalid_argument = true;
              ACE_ERROR ((LM_ERROR,
                ACE_TEXT ("\"%C\" is not a valid argument.\n"),
                av[i]
                ));
            }
        }
      if (invalid_argument)
        {
          ACE_ERROR ((LM_ERROR,
            ACE_TEXT ("Use either \"warn-once\", \"warn-all\", ")
            ACE_TEXT ("\"error\" or \"ignore\".\n"),
            av[i]
            ));
          idl_global->parse_args_exit (1);
        }
    }
  else
    {
      be_global->parse_args (i, av);
    }
}