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/* Support for printing Chill types for GDB, the GNU debugger.

   Copyright 1986, 1988, 1989, 1991, 1992, 1993, 1994, 1995, 2000

   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 2 of the License, or

   (at your option) any later version.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place - Suite 330,

   Boston, MA 02111-1307, USA.  */

#include "defs.h"

#include "obstack.h"

#include "bfd.h"                /* Binary File Description */

#include "symtab.h"

#include "gdbtypes.h"

#include "expression.h"

#include "value.h"

#include "gdbcore.h"

#include "target.h"

#include "language.h"

#include "ch-lang.h"

#include "typeprint.h"

#include "gdb_string.h"

#include <errno.h>

static void chill_type_print_base (struct type *, struct ui_file *, int, int);

void

chill_print_type (struct type *type, char *varstring, struct ui_file *stream,

                  int show, int level)

{

  if (varstring != NULL && *varstring != '\0')

    {

      fputs_filtered (varstring, stream);

      fputs_filtered (" ", stream);

    }

  chill_type_print_base (type, stream, show, level);

}

/* Print the name of the type (or the ultimate pointer target,

   function value or array element).

   SHOW nonzero means don't print this type as just its name;

   show its real definition even if it has a name.

   SHOW zero means print just typename or tag if there is one

   SHOW negative means abbreviate structure elements.

   SHOW is decremented for printing of structure elements.

   LEVEL is the depth to indent by.

   We increase it for some recursive calls.  */

static void

chill_type_print_base (struct type *type, struct ui_file *stream, int show,

                       int level)

{

  register int len;

  register int i;

  struct type *index_type;

  struct type *range_type;

  LONGEST low_bound;

  LONGEST high_bound;

  QUIT;

  wrap_here ("    ");

  if (type == NULL)

    {

      fputs_filtered ("<type unknown>", stream);

      return;

    }

  /* When SHOW is zero or less, and there is a valid type name, then always

     just print the type name directly from the type. */

  if ((show <= 0) && (TYPE_NAME (type) != NULL))

    {

      fputs_filtered (TYPE_NAME (type), stream);

      return;

    }

  if (TYPE_CODE (type) != TYPE_CODE_TYPEDEF)

    CHECK_TYPEDEF (type);

  switch (TYPE_CODE (type))

    {

    case TYPE_CODE_TYPEDEF:

      chill_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);

      break;

    case TYPE_CODE_PTR:

      if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_VOID)

        {

          fprintf_filtered (stream,

                            TYPE_NAME (type) ? TYPE_NAME (type) : "PTR");

          break;

        }

      fprintf_filtered (stream, "REF ");

      chill_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);

      break;

    case TYPE_CODE_BOOL:

      /* FIXME: we should probably just print the TYPE_NAME, in case

         anyone ever fixes the compiler to give us the real names

         in the presence of the chill equivalent of typedef (assuming

         there is one).  */

      fprintf_filtered (stream,

                        TYPE_NAME (type) ? TYPE_NAME (type) : "BOOL");

      break;

    case TYPE_CODE_ARRAY:

      fputs_filtered ("ARRAY (", stream);

      range_type = TYPE_FIELD_TYPE (type, 0);

      if (TYPE_CODE (range_type) != TYPE_CODE_RANGE)

        chill_print_type (range_type, "", stream, 0, level);

      else

        {

          index_type = TYPE_TARGET_TYPE (range_type);

          low_bound = TYPE_FIELD_BITPOS (range_type, 0);

          high_bound = TYPE_FIELD_BITPOS (range_type, 1);

          print_type_scalar (index_type, low_bound, stream);

          fputs_filtered (":", stream);

          print_type_scalar (index_type, high_bound, stream);

        }

      fputs_filtered (") ", stream);

      chill_print_type (TYPE_TARGET_TYPE (type), "", stream, 0, level);

      break;

    case TYPE_CODE_BITSTRING:

      fprintf_filtered (stream, "BOOLS (%d)",

                      TYPE_FIELD_BITPOS (TYPE_FIELD_TYPE (type, 0), 1) + 1);

      break;

    case TYPE_CODE_SET:

      fputs_filtered ("POWERSET ", stream);

      chill_print_type (TYPE_INDEX_TYPE (type), "", stream,

                        show - 1, level);

      break;

    case TYPE_CODE_STRING:

      range_type = TYPE_FIELD_TYPE (type, 0);

      index_type = TYPE_TARGET_TYPE (range_type);

      high_bound = TYPE_FIELD_BITPOS (range_type, 1);

      fputs_filtered ("CHARS (", stream);

      print_type_scalar (index_type, high_bound + 1, stream);

      fputs_filtered (")", stream);

      break;

    case TYPE_CODE_MEMBER:

      fprintf_filtered (stream, "MEMBER ");

      chill_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);

      break;

    case TYPE_CODE_REF:

      fprintf_filtered (stream, "/*LOC*/ ");

      chill_type_print_base (TYPE_TARGET_TYPE (type), stream, show, level);

      break;

    case TYPE_CODE_FUNC:

      fprintf_filtered (stream, "PROC (");

      len = TYPE_NFIELDS (type);

      for (i = 0; i < len; i++)

        {

          struct type *param_type = TYPE_FIELD_TYPE (type, i);

          if (i > 0)

            {

              fputs_filtered (", ", stream);

              wrap_here ("    ");

            }

          if (TYPE_CODE (param_type) == TYPE_CODE_REF)

            {

              chill_type_print_base (TYPE_TARGET_TYPE (param_type),

                                     stream, 0, level);

              fputs_filtered (" LOC", stream);

            }

          else

            chill_type_print_base (param_type, stream, show, level);

        }

      fprintf_filtered (stream, ")");

      if (TYPE_CODE (TYPE_TARGET_TYPE (type)) != TYPE_CODE_VOID)

        {

          fputs_filtered (" RETURNS (", stream);

          chill_type_print_base (TYPE_TARGET_TYPE (type), stream, 0, level);

          fputs_filtered (")", stream);

        }

      break;

    case TYPE_CODE_STRUCT:

      if (chill_varying_type (type))

        {

          chill_type_print_base (TYPE_FIELD_TYPE (type, 1),

                                 stream, 0, level);

          fputs_filtered (" VARYING", stream);

        }

      else

        {

          fprintf_filtered (stream, "STRUCT ");

          fprintf_filtered (stream, "(\n");

          if ((TYPE_NFIELDS (type) == 0) && (TYPE_NFN_FIELDS (type) == 0))

            {

              if (TYPE_FLAGS (type) & TYPE_FLAG_STUB)

                {

                  fprintfi_filtered (level + 4, stream, "<incomplete type>\n");

                }

              else

                {

                  fprintfi_filtered (level + 4, stream, "<no data fields>\n");

                }

            }

          else

            {

              len = TYPE_NFIELDS (type);

              for (i = TYPE_N_BASECLASSES (type); i < len; i++)

                {

                  struct type *field_type = TYPE_FIELD_TYPE (type, i);

                  QUIT;

                  print_spaces_filtered (level + 4, stream);

                  if (TYPE_CODE (field_type) == TYPE_CODE_UNION)

                    {

                      int j;    /* variant number */

                      fputs_filtered ("CASE OF\n", stream);

                      for (j = 0; j < TYPE_NFIELDS (field_type); j++)

                        {

                          int k;        /* variant field index */

                          struct type *variant_type

                          = TYPE_FIELD_TYPE (field_type, j);

                          int var_len = TYPE_NFIELDS (variant_type);

                          print_spaces_filtered (level + 4, stream);

                          if (strcmp (TYPE_FIELD_NAME (field_type, j),

                                      "else") == 0)

                            fputs_filtered ("ELSE\n", stream);

                          else

                            fputs_filtered (":\n", stream);

                          if (TYPE_CODE (variant_type) != TYPE_CODE_STRUCT)

                            error ("variant record confusion");

                          for (k = 0; k < var_len; k++)

                            {

                              print_spaces_filtered (level + 8, stream);

                              chill_print_type (TYPE_FIELD_TYPE (variant_type, k),

                                          TYPE_FIELD_NAME (variant_type, k),

                                                stream, show - 1, level + 8);

                              if (k < (var_len - 1))

                                fputs_filtered (",", stream);

                              fputs_filtered ("\n", stream);

                            }

                        }

                      print_spaces_filtered (level + 4, stream);

                      fputs_filtered ("ESAC", stream);

                    }

                  else

                    chill_print_type (field_type,

                                      TYPE_FIELD_NAME (type, i),

                                      stream, show - 1, level + 4);

                  if (i < (len - 1))

                    {

                      fputs_filtered (",", stream);

                    }

                  fputs_filtered ("\n", stream);

                }

            }

          fprintfi_filtered (level, stream, ")");

        }

      break;

    case TYPE_CODE_RANGE:

      {

        struct type *target = TYPE_TARGET_TYPE (type);

        if (target && TYPE_NAME (target))

          fputs_filtered (TYPE_NAME (target), stream);

        else

          fputs_filtered ("RANGE", stream);

        if (target == NULL)

          target = builtin_type_long;

        fputs_filtered (" (", stream);

        print_type_scalar (target, TYPE_LOW_BOUND (type), stream);

        fputs_filtered (":", stream);

        print_type_scalar (target, TYPE_HIGH_BOUND (type), stream);

        fputs_filtered (")", stream);

      }

      break;

    case TYPE_CODE_ENUM:

      {

        register int lastval = 0;

        fprintf_filtered (stream, "SET (");

        len = TYPE_NFIELDS (type);

        for (i = 0; i < len; i++)

          {

            QUIT;

            if (i)

              fprintf_filtered (stream, ", ");

            wrap_here ("    ");

            fputs_filtered (TYPE_FIELD_NAME (type, i), stream);

            if (lastval != TYPE_FIELD_BITPOS (type, i))

              {

                fprintf_filtered (stream, " = %d", TYPE_FIELD_BITPOS (type, i));

                lastval = TYPE_FIELD_BITPOS (type, i);

              }

            lastval++;

          }

        fprintf_filtered (stream, ")");

      }

      break;

    case TYPE_CODE_VOID:

    case TYPE_CODE_UNDEF:

    case TYPE_CODE_ERROR:

    case TYPE_CODE_UNION:

    case TYPE_CODE_METHOD:

      error ("missing language support in chill_type_print_base");

      break;

    default:

      /* Handle types not explicitly handled by the other cases,

         such as fundamental types.  For these, just print whatever

         the type name is, as recorded in the type itself.  If there

         is no type name, then complain. */

      if (TYPE_NAME (type) != NULL)

        {

          fputs_filtered (TYPE_NAME (type), stream);

        }

      else

        {

          error ("Unrecognized type code (%d) in symbol table.",

                 TYPE_CODE (type));

        }

      break;

    }

}