/* -*- mode: C; c-file-style: "gnu" -*- */

/* dbus-gsignature.c Mapping from dbus type signatures to GType

 *

 * Copyright (C) 2005 Red Hat, Inc.

 *

 * Licensed under the Academic Free License version 2.1

 * 

 * 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 "config.h"

#include "dbus-gtest.h"

#include "dbus-gsignature.h"

#include "dbus-gvalue-utils.h"

#include <string.h>

#include <glib.h>

#define MAP_BASIC(d_t, g_t)                     \

    case DBUS_TYPE_##d_t:                       \

      return G_TYPE_##g_t;

static GType

typecode_to_gtype (int type)

{

  switch (type)

    {

      MAP_BASIC (BOOLEAN, BOOLEAN);

      MAP_BASIC (BYTE,    UCHAR);

      MAP_BASIC (INT16,   INT);

      MAP_BASIC (INT32,   INT);

      MAP_BASIC (UINT16,  UINT);

      MAP_BASIC (UINT32,  UINT);

      MAP_BASIC (INT64,   INT64);

      MAP_BASIC (UINT64,  UINT64);

      MAP_BASIC (DOUBLE,  DOUBLE);

      MAP_BASIC (STRING,  STRING);

    default:

      return G_TYPE_INVALID;

    }

}

#undef MAP_BASIC

static gboolean

dbus_typecode_maps_to_basic (int typecode)

{

  return typecode_to_gtype (typecode) != G_TYPE_INVALID;

}

GType

_dbus_gtype_from_basic_typecode (int typecode)

{

  g_assert (dbus_type_is_basic (typecode));

  g_assert (dbus_typecode_maps_to_basic (typecode));

  return typecode_to_gtype (typecode);

}

static GType

signature_iter_to_g_type_dict (const DBusSignatureIter *subiter, gboolean is_client)

{

  DBusSignatureIter iter;

  GType key_gtype;

  GType value_gtype;

  g_assert (dbus_signature_iter_get_current_type (subiter) == DBUS_TYPE_DICT_ENTRY);

  dbus_signature_iter_recurse (subiter, &iter);

  key_gtype = _dbus_gtype_from_signature_iter (&iter, is_client); 

  if (key_gtype == G_TYPE_INVALID)

    return G_TYPE_INVALID;

  dbus_signature_iter_next (&iter);

  value_gtype = _dbus_gtype_from_signature_iter (&iter, is_client);

  if (value_gtype == G_TYPE_INVALID)

    return G_TYPE_INVALID;

  if (!_dbus_gtype_is_valid_hash_key (key_gtype)

      || !_dbus_gtype_is_valid_hash_value (value_gtype))

    /* Later we need to return DBUS_TYPE_G_VALUE */

    return G_TYPE_INVALID; 

  return dbus_g_type_get_map ("GHashTable", key_gtype, value_gtype);

}

static GType

signature_iter_to_g_type_array (DBusSignatureIter *iter, gboolean is_client)

{

  GType elt_gtype;

  elt_gtype = _dbus_gtype_from_signature_iter (iter, is_client);

  if (elt_gtype == G_TYPE_INVALID)

    return G_TYPE_INVALID;

  if (elt_gtype == G_TYPE_OBJECT)

    return DBUS_TYPE_G_OBJECT_ARRAY;

  if (elt_gtype == G_TYPE_STRING)

    return G_TYPE_STRV;

  if (_dbus_g_type_is_fixed (elt_gtype))

    return dbus_g_type_get_collection ("GArray", elt_gtype);

  else if (g_type_is_a (elt_gtype, G_TYPE_OBJECT)

	   || g_type_is_a (elt_gtype, G_TYPE_BOXED))

    return dbus_g_type_get_collection ("GPtrArray", elt_gtype);

  /* Later we need to return DBUS_TYPE_G_VALUE */

  return G_TYPE_INVALID; 

}

static GType

signature_iter_to_g_type_struct (DBusSignatureIter *iter, gboolean is_client)

{

  GArray *types;

  GType ret;

  types = g_array_new (FALSE, FALSE, sizeof (GType));

  do

    {

      GType curtype;

      curtype = _dbus_gtype_from_signature_iter (iter, is_client);

      g_array_append_val (types, curtype);

    }

  while (dbus_signature_iter_next (iter));

  ret = dbus_g_type_get_structv ("GValueArray", types->len, (GType*) types->data);

  g_array_free (types, TRUE);

  return ret;

}

GType

_dbus_gtype_from_signature_iter (DBusSignatureIter *iter, gboolean is_client)

{

  int current_type;

  current_type = dbus_signature_iter_get_current_type (iter);

  /* TODO: handle type 0? */

  if (dbus_typecode_maps_to_basic (current_type))

    return _dbus_gtype_from_basic_typecode (current_type);

  else if (current_type == DBUS_TYPE_OBJECT_PATH)

    return DBUS_TYPE_G_OBJECT_PATH;

  else

    {

      DBusSignatureIter subiter;

      g_assert (dbus_type_is_container (current_type));

      if (current_type == DBUS_TYPE_VARIANT)

	return G_TYPE_VALUE;

      dbus_signature_iter_recurse (iter, &subiter);

      if (current_type == DBUS_TYPE_ARRAY)

	{

	  int elt_type = dbus_signature_iter_get_current_type (&subiter);

	  if (elt_type == DBUS_TYPE_DICT_ENTRY)

	    return signature_iter_to_g_type_dict (&subiter, is_client);

	  else 

	    return signature_iter_to_g_type_array (&subiter, is_client);

	}

      else if (current_type == DBUS_TYPE_STRUCT)

        {

          return signature_iter_to_g_type_struct (&subiter, is_client);

        }

      else

	{

	  g_assert_not_reached ();

	  return G_TYPE_INVALID;

	}

    }

}

GType

_dbus_gtype_from_signature (const char *signature, gboolean is_client)

{

  DBusSignatureIter iter;

  dbus_signature_iter_init (&iter, signature);

  return _dbus_gtype_from_signature_iter (&iter, is_client);

}

GArray *

_dbus_gtypes_from_arg_signature (const char *argsig, gboolean is_client)

{

  GArray *ret;

  int current_type;

  DBusSignatureIter sigiter;

  ret = g_array_new (FALSE, FALSE, sizeof (GType));

  dbus_signature_iter_init (&sigiter, argsig);

  while ((current_type = dbus_signature_iter_get_current_type (&sigiter)) != DBUS_TYPE_INVALID)

    {

      GType curtype;

      curtype = _dbus_gtype_from_signature_iter (&sigiter, is_client);

      g_array_append_val (ret, curtype);

      dbus_signature_iter_next (&sigiter);

    }

  return ret;

}