// tao_idl.cpp,v 1.37 2004/12/07 23:33:51 gmaxey Exp

/*

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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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*/

#include "idl_defines.h"
#include "be_extern.h"
#include "global_extern.h"
#include "fe_extern.h"
#include "ast_root.h"
#include "ast_extern.h"
#include "utl_string.h"
#include "utl_identifier.h"
#include "drv_extern.h"
#include "../tao/Version.h"

#if !defined (ACE_LACKS_IOSTREAM_TOTALLY)
// FUZZ: disable check_for_streams_include
#  include "ace/streams.h"
#endif /* ! ACE_LACKS_IOSTREAM_TOTALLY */

ACE_RCSID (TAO_IDL,
           tao_idl,
           "tao_idl.cpp,v 1.37 2004/12/07 23:33:51 gmaxey Exp")

const char *DRV_files[NFILES];
long DRV_nfiles = 0;
long DRV_file_index = -1;

void
DRV_version (void)
{
  ACE_DEBUG ((LM_DEBUG,
              "%s\n"
              "%s %s (%s %s)\n",
              idl_global->prog_name (),
              ACE_TEXT ("TAO_IDL_FE, version"),
              ACE_TEXT (TAO_VERSION),
              ACE_TEXT ("Based on Sun IDL FE, version"),
              ACE_TEXT (SUN_IDL_FE_VERSION)));

  BE_version ();
}

int
DRV_init (int &argc, char *argv[])
{
  // Initialize BE.
  FE_init ();
  
  // Initialize driver private data
  DRV_nfiles = 0;
  DRV_file_index = 0;
  
#if defined (TAO_IDL_PREPROCESSOR)
  idl_global->set_cpp_location (TAO_IDL_PREPROCESSOR);
#elif defined (ACE_CC_PREPROCESSOR)
  idl_global->set_cpp_location (ACE_CC_PREPROCESSOR);
#else
  // Just default to cc
  idl_global->set_cpp_location ("cc");
#endif /* TAO_IDL_PREPROCESSOR */

  // Initialize BE global data object.
  ACE_NEW_RETURN (be_global,
                  BE_GlobalData,
                  -1);

  // Does nothing for IDL compiler, stores -ORB args, initializes
  // ORB and IFR for IFR loader.
  return BE_init (argc, argv);
}

void
DRV_refresh (void)
{
  idl_global->set_err_count (0);
  idl_global->set_filename (0);
  idl_global->set_main_filename (0);
  idl_global->set_real_filename (0);
  idl_global->set_stripped_filename (0);
//  idl_global->set_import (I_TRUE);
//  idl_global->set_in_main_file (I_FALSE);
  idl_global->set_lineno (-1);
  idl_global->reset_flag_seen ();
}

/*
** Drive the compilation
**
** LOGIC:
**
** 2. Initialize the BE. This builds an instance of the generator
** 3. Initialize the FE. This builds the global scope
**    and populates it with the predefined types
** 4. Invoke FE_yyparse
** 5. Check for errors from FE_yyparse. If any, exit now
** 6. Check for undefined forward declared interfaces. If any, exit now
** 7. Check if asked to dump AST. If so, do.
** 8. Invoke BE.
*/

void
DRV_drive (const char *s)
{
  // Set the name of the IDL file we are parsing. This is useful to
  // the backend when it generates C++ headers and files.
  UTL_String *src_file = 0;
  ACE_NEW (src_file,
           UTL_String (s));

  idl_global->idl_src_file (src_file);

  // Pass through CPP.
  if (idl_global->compile_flags () & IDL_CF_INFORMATIVE)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "%s%s %s\n",
                  idl_global->prog_name (),
                  ACE_TEXT (": preprocessing"),
                  s));
    }

  DRV_pre_proc (s);

  // Parse.
  if (idl_global->compile_flags () & IDL_CF_INFORMATIVE)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "%s%s %s\n",
                  idl_global->prog_name(),
                  ACE_TEXT (": parsing"),
                  s));
    }

  FE_yyparse ();

  // If there were any errors, stop.
  if (idl_global->err_count () > 0)
    {
      ACE_ERROR ((LM_ERROR,
                  "%s%s %s%s %d %s%s\n",
                  idl_global->prog_name (),
                  ACE_TEXT (":"),
                  s,
                  ACE_TEXT (": found"),
                  idl_global->err_count (),
                  ACE_TEXT ("error"),
                  ACE_TEXT ((idl_global->err_count () > 1
                    ? ACE_TEXT ("s")
                    : ACE_TEXT ("")))));

      // Call BE_abort to allow a BE to clean up after itself.
      BE_abort ();

      ACE_OS::exit (static_cast<int> (idl_global->err_count ()));
    }

  // Dump the code.
  if ((idl_global->compile_flags () & IDL_CF_INFORMATIVE)
      && (idl_global->compile_flags () & IDL_CF_DUMP_AST))
    {
      ACE_DEBUG ((LM_DEBUG,
                  "%s%s %s\n",
                  idl_global->prog_name (),
                  ACE_TEXT (": dump"),
                  s));
    }

  if (idl_global->compile_flags () & IDL_CF_DUMP_AST)
    {
      ACE_DEBUG ((LM_DEBUG,
                  ACE_TEXT ("Dump of AST:\n")));

      idl_global->root ()->dump (*ACE_DEFAULT_LOG_STREAM);
    }

  // Call the main entry point for the BE.
  if (idl_global->compile_flags () & IDL_CF_INFORMATIVE)
    {
      ACE_DEBUG ((LM_DEBUG,
                  "%s%s %s\n",
                  idl_global->prog_name (),
                  ACE_TEXT (": BE processing on"),
                  s));
    }

  // Make sure all forward declared structs and unions are defined
  // before proceeding to code generation.
  AST_check_fwd_decls ();
  long error_count = idl_global->err_count ();

  if (error_count == 0)
    {
      BE_produce ();
    }
  else
    {
      ACE_OS::exit (static_cast<int> (error_count));
    }
    
  DRV_refresh ();
}

/*
** LOGIC:
**
** 1. Initialize compiler driver
** 2. Parse command line args
** 3. If more than one file to parse, fork
** 4. Otherwise, for the single file, invoke DRV_drive
*/

int
main (int argc, char *argv[])
{
  // Initialize driver and global variables.
  int init_status = DRV_init (argc, argv);

  if (init_status != 0)
    {
      ACE_OS::exit (init_status);
    }

  // Parse arguments.
  DRV_parse_args (argc, argv);

  // If a version message is requested, print it and exit.
  if (idl_global->compile_flags () & IDL_CF_VERSION)
    {
      DRV_version ();
      ACE_OS::exit (0);
    }

  // If a usage message is requested, give it and exit.
  if (idl_global->compile_flags () & IDL_CF_ONLY_USAGE)
    {
      DRV_usage ();
      ACE_OS::exit (0);
    }

  // If there are no input files, no sense going any further.
  if (DRV_nfiles == 0)
    {
      ACE_ERROR ((LM_ERROR,
                  ACE_TEXT ("IDL: No input files\n")));

      ACE_OS::exit (99);
    }

  AST_Generator *gen = be_global->generator_init ();

  if (gen == 0)
    {
      ACE_ERROR ((
          LM_ERROR,
          ACE_TEXT ("IDL: DRV_generator_init() failed to create ")
          ACE_TEXT ("generator, exiting\n")
        ));

      ACE_OS::exit (99);
    }
  else
    {
      idl_global->set_gen (gen);
    } 

  // Initialize AST and load predefined types.
  FE_populate ();

  // Does various things in various backends.
  BE_post_init (DRV_files, DRV_nfiles);

  for (DRV_file_index = 0;
       DRV_file_index < DRV_nfiles;
       ++DRV_file_index)
    {
      DRV_drive (DRV_files[DRV_file_index]);
    }
    
  be_global->destroy ();  
  delete be_global;
  be_global = 0;
  
  idl_global->fini ();  
  delete idl_global;
  idl_global = 0;

  ACE_OS::exit (0);

  // NOT REACHED
  return 0;
}
