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|
/* tmpl-gi.c
*
* Copyright PyGObject authors
* Christian Hergert <chergert@redhat.com>
*
* This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This file 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "tmpl-error.h"
#include "tmpl-gi-private.h"
G_DEFINE_POINTER_TYPE (TmplTypelib, tmpl_typelib)
typedef struct GIBaseInfo TmplBaseInfo;
G_DEFINE_BOXED_TYPE (TmplBaseInfo, tmpl_base_info,
(GBoxedCopyFunc)g_base_info_ref,
(GBoxedFreeFunc)g_base_info_unref)
#define return_type_mismatch(value, type) \
G_STMT_START { \
g_set_error (error, \
TMPL_ERROR, \
TMPL_ERROR_TYPE_MISMATCH, \
"Expected %s, got %s", \
g_type_name (type), G_VALUE_TYPE_NAME (value)); \
return FALSE; \
} G_STMT_END
#define return_if_not_type(value, type) \
G_STMT_START { \
if (!G_VALUE_HOLDS (value, type)) \
return_type_mismatch(value, type); \
} G_STMT_END
static gboolean
find_enum_value (GIEnumInfo *info,
const gchar *str,
gint *v_int)
{
guint n = g_enum_info_get_n_values (info);
for (guint i = 0; i < n; i++)
{
g_autoptr(GIBaseInfo) vinfo = NULL;
vinfo = (GIBaseInfo *)g_enum_info_get_value (info, i);
if (g_strcmp0 (str, g_base_info_get_name (vinfo)) == 0)
{
*v_int = g_value_info_get_value ((GIValueInfo *)vinfo);
return TRUE;
}
}
return FALSE;
}
gboolean
tmpl_gi_argument_from_g_value (const GValue *value,
GITypeInfo *type_info,
GIArgInfo *arg_info,
GIArgument *arg,
GError **error)
{
GITypeTag type_tag = g_type_info_get_tag (type_info);
GITransfer xfer = g_arg_info_get_ownership_transfer (arg_info);
/* For the long handling: long can be equivalent to
* int32 or int64, depending on the architecture, but
* gi doesn't tell us (and same for ulong)
*/
if (G_VALUE_TYPE (value) == G_TYPE_INVALID)
{
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_TYPE_MISMATCH,
"uninitialized value");
return FALSE;
}
switch (type_tag)
{
case GI_TYPE_TAG_BOOLEAN:
return_if_not_type (value, G_TYPE_BOOLEAN);
arg->v_boolean = g_value_get_boolean (value);
return TRUE;
case GI_TYPE_TAG_INT8:
return_if_not_type (value, G_TYPE_CHAR);
arg->v_int8 = g_value_get_schar (value);
return TRUE;
case GI_TYPE_TAG_INT16:
case GI_TYPE_TAG_INT32:
if (G_VALUE_HOLDS (value, G_TYPE_LONG))
arg->v_int = g_value_get_long (value);
else if (G_VALUE_HOLDS (value, G_TYPE_INT))
arg->v_int = g_value_get_int (value);
else
return_type_mismatch (value, G_TYPE_INT);
return TRUE;
case GI_TYPE_TAG_INT64:
if (G_VALUE_HOLDS (value, G_TYPE_LONG))
arg->v_int64 = g_value_get_long (value);
else if (G_VALUE_HOLDS (value, G_TYPE_INT64))
arg->v_int64 = g_value_get_int64 (value);
else
return_type_mismatch (value, G_TYPE_INT64);
return TRUE;
case GI_TYPE_TAG_UINT8:
if (G_VALUE_HOLDS (value, G_TYPE_UCHAR))
arg->v_uint8 = g_value_get_uchar (value);
else
return_type_mismatch (value, G_TYPE_UCHAR);
return TRUE;
case GI_TYPE_TAG_UINT16:
case GI_TYPE_TAG_UINT32:
if (G_VALUE_HOLDS (value, G_TYPE_ULONG))
arg->v_uint = g_value_get_ulong (value);
else if (G_VALUE_HOLDS (value, G_TYPE_UINT))
arg->v_uint = g_value_get_uint (value);
else
return_type_mismatch (value, G_TYPE_UINT);
return TRUE;
case GI_TYPE_TAG_UINT64:
if (G_VALUE_HOLDS (value, G_TYPE_ULONG))
arg->v_uint64 = g_value_get_ulong (value);
else if (G_VALUE_HOLDS (value, G_TYPE_UINT64))
arg->v_uint64 = g_value_get_uint64 (value);
else
return_type_mismatch (value, G_TYPE_UINT64);
return TRUE;
case GI_TYPE_TAG_UNICHAR:
if (G_VALUE_HOLDS (value, G_TYPE_CHAR))
arg->v_uint32 = g_value_get_schar (value);
else
return_type_mismatch (value, G_TYPE_CHAR);
return TRUE;
case GI_TYPE_TAG_FLOAT:
if (G_VALUE_HOLDS (value, G_TYPE_FLOAT))
arg->v_float = g_value_get_float (value);
else
return_type_mismatch (value, G_TYPE_FLOAT);
return TRUE;
case GI_TYPE_TAG_DOUBLE:
if (G_VALUE_HOLDS (value, G_TYPE_DOUBLE))
arg->v_double = g_value_get_double (value);
else
return_type_mismatch (value, G_TYPE_DOUBLE);
return TRUE;
case GI_TYPE_TAG_GTYPE:
if (G_VALUE_HOLDS (value, G_TYPE_GTYPE))
arg->v_long = g_value_get_gtype (value);
else if (G_VALUE_HOLDS (value, TMPL_TYPE_BASE_INFO) &&
g_value_get_boxed (value) != NULL &&
GI_IS_REGISTERED_TYPE_INFO (g_value_get_boxed (value)))
arg->v_long = g_registered_type_info_get_g_type (g_value_get_boxed (value));
else
return_type_mismatch (value, G_TYPE_GTYPE);
return TRUE;
case GI_TYPE_TAG_UTF8:
case GI_TYPE_TAG_FILENAME:
/* Callers are responsible for ensuring the GValue stays alive
* long enough for the string to be copied. */
if (G_VALUE_HOLDS (value, G_TYPE_STRING))
{
if (xfer == GI_TRANSFER_NOTHING)
arg->v_string = (char *)g_value_get_string (value);
else
arg->v_string = g_value_dup_string (value);
}
else
return_type_mismatch (value, G_TYPE_STRING);
return TRUE;
case GI_TYPE_TAG_GLIST:
case GI_TYPE_TAG_GSLIST:
case GI_TYPE_TAG_ARRAY:
case GI_TYPE_TAG_GHASH:
if (G_VALUE_HOLDS_BOXED (value))
arg->v_pointer = g_value_get_boxed (value);
else if (G_VALUE_HOLDS (value, G_TYPE_POINTER))
/* e. g. GSettings::change-event */
arg->v_pointer = g_value_get_pointer (value);
else
return_type_mismatch (value, G_TYPE_POINTER);
return TRUE;
case GI_TYPE_TAG_INTERFACE:
{
g_autoptr(GIBaseInfo) info = NULL;
GIInfoType info_type;
info = g_type_info_get_interface (type_info);
info_type = g_base_info_get_type (info);
switch (info_type)
{
case GI_INFO_TYPE_FLAGS:
if (G_VALUE_HOLDS (value, G_TYPE_FLAGS))
arg->v_uint = g_value_get_flags (value);
else
return_type_mismatch (value, G_TYPE_FLAGS);
return TRUE;
case GI_INFO_TYPE_ENUM:
if (G_VALUE_HOLDS_STRING (value))
{
if (find_enum_value ((GIEnumInfo *)info, g_value_get_string (value), &arg->v_int))
return TRUE;
}
if (!G_VALUE_HOLDS_ENUM (value))
{
return_type_mismatch (value, G_TYPE_ENUM);
return FALSE;
}
arg->v_int = g_value_get_enum (value);
return TRUE;
case GI_INFO_TYPE_INTERFACE:
case GI_INFO_TYPE_OBJECT:
if (G_VALUE_HOLDS_PARAM (value))
arg->v_pointer = xfer == GI_TRANSFER_NOTHING ? g_value_get_param (value) : g_value_dup_param (value);
else
arg->v_pointer = xfer == GI_TRANSFER_NOTHING ? g_value_get_object (value) : g_value_dup_object (value);
return TRUE;
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
case GI_INFO_TYPE_UNION:
if (G_VALUE_HOLDS (value, G_TYPE_BOXED))
arg->v_pointer = xfer == GI_TRANSFER_NOTHING ? g_value_get_boxed (value) : g_value_dup_boxed (value);
else if (G_VALUE_HOLDS (value, G_TYPE_VARIANT))
arg->v_pointer = xfer == GI_TRANSFER_NOTHING ? g_value_get_variant (value) : g_value_dup_variant (value);
else if (G_VALUE_HOLDS (value, G_TYPE_POINTER))
arg->v_pointer = g_value_get_pointer (value);
else
{
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_NOT_IMPLEMENTED,
"Converting GValue's of type '%s' is not implemented.",
g_type_name (G_VALUE_TYPE (value)));
return FALSE;
}
return TRUE;
case GI_INFO_TYPE_INVALID:
case GI_INFO_TYPE_INVALID_0:
case GI_INFO_TYPE_FUNCTION:
case GI_INFO_TYPE_CONSTANT:
case GI_INFO_TYPE_CALLBACK:
case GI_INFO_TYPE_VALUE:
case GI_INFO_TYPE_SIGNAL:
case GI_INFO_TYPE_VFUNC:
case GI_INFO_TYPE_PROPERTY:
case GI_INFO_TYPE_FIELD:
case GI_INFO_TYPE_ARG:
case GI_INFO_TYPE_TYPE:
case GI_INFO_TYPE_UNRESOLVED:
default:
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_NOT_IMPLEMENTED,
"Converting GValue's of type '%s' is not implemented.",
g_info_type_to_string (info_type));
return FALSE;
}
g_assert_not_reached ();
}
case GI_TYPE_TAG_ERROR:
if (G_VALUE_HOLDS (value, G_TYPE_ERROR))
arg->v_pointer = xfer == GI_TRANSFER_NOTHING ? g_value_get_boxed (value) : g_value_dup_boxed (value);
else
return_type_mismatch (value, G_TYPE_ERROR);
return TRUE;
case GI_TYPE_TAG_VOID:
if (G_VALUE_HOLDS (value, G_TYPE_POINTER))
arg->v_pointer = g_value_get_pointer (value);
else
return_type_mismatch (value, G_TYPE_POINTER);
return TRUE;
default:
break;
}
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_NOT_IMPLEMENTED,
"Unknown marshaling error.");
return FALSE;
}
gboolean
tmpl_gi_argument_to_g_value (GValue *value,
GITypeInfo *type_info,
GIArgument *arg,
GITransfer xfer,
GError **error)
{
GITypeTag tag;
g_assert (value != NULL);
g_assert (type_info != NULL);
g_assert (arg != NULL);
tag = g_type_info_get_tag (type_info);
switch (tag)
{
case GI_TYPE_TAG_VOID:
/* No type info */
return TRUE;
case GI_TYPE_TAG_BOOLEAN:
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, arg->v_boolean);
return TRUE;
case GI_TYPE_TAG_INT8:
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, arg->v_int8);
return TRUE;
case GI_TYPE_TAG_INT16:
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, arg->v_int16);
return TRUE;
case GI_TYPE_TAG_INT32:
g_value_init (value, G_TYPE_INT);
g_value_set_int (value, arg->v_int32);
return TRUE;
case GI_TYPE_TAG_INT64:
g_value_init (value, G_TYPE_INT64);
g_value_set_int64 (value, arg->v_int64);
return TRUE;
case GI_TYPE_TAG_UINT8:
g_value_init (value, G_TYPE_UINT);
g_value_set_uint (value, arg->v_uint8);
return TRUE;
case GI_TYPE_TAG_UINT16:
g_value_init (value, G_TYPE_UINT);
g_value_set_uint (value, arg->v_uint16);
return TRUE;
case GI_TYPE_TAG_UINT32:
g_value_init (value, G_TYPE_UINT);
g_value_set_uint (value, arg->v_uint32);
return TRUE;
case GI_TYPE_TAG_UINT64:
g_value_init (value, G_TYPE_UINT64);
g_value_set_uint64 (value, arg->v_uint64);
return TRUE;
case GI_TYPE_TAG_FLOAT:
g_value_init (value, G_TYPE_FLOAT);
g_value_set_float (value, arg->v_float);
return TRUE;
case GI_TYPE_TAG_DOUBLE:
g_value_init (value, G_TYPE_DOUBLE);
g_value_set_float (value, arg->v_double);
return TRUE;
case GI_TYPE_TAG_GTYPE:
g_value_init (value, G_TYPE_GTYPE);
g_value_set_gtype (value, arg->v_long);
return TRUE;
case GI_TYPE_TAG_UTF8:
case GI_TYPE_TAG_FILENAME:
g_value_init (value, G_TYPE_STRING);
if (xfer == GI_TRANSFER_NOTHING)
g_value_set_string (value, arg->v_string);
else
g_value_take_string (value, arg->v_string);
return TRUE;
case GI_TYPE_TAG_INTERFACE:
{
g_autoptr(GIBaseInfo) info = g_type_info_get_interface (type_info);
GIInfoType info_type = g_base_info_get_type (info);
switch (info_type)
{
case GI_INFO_TYPE_INTERFACE:
case GI_INFO_TYPE_OBJECT:
g_value_init (value, G_TYPE_OBJECT);
if (xfer == GI_TRANSFER_NOTHING)
g_value_set_object (value, arg->v_pointer);
else
g_value_take_object (value, arg->v_pointer);
return TRUE;
case GI_INFO_TYPE_FLAGS:
case GI_INFO_TYPE_ENUM:
case GI_INFO_TYPE_BOXED:
case GI_INFO_TYPE_STRUCT:
case GI_INFO_TYPE_UNION:
case GI_INFO_TYPE_INVALID:
case GI_INFO_TYPE_INVALID_0:
case GI_INFO_TYPE_FUNCTION:
case GI_INFO_TYPE_CONSTANT:
case GI_INFO_TYPE_CALLBACK:
case GI_INFO_TYPE_VALUE:
case GI_INFO_TYPE_SIGNAL:
case GI_INFO_TYPE_VFUNC:
case GI_INFO_TYPE_PROPERTY:
case GI_INFO_TYPE_FIELD:
case GI_INFO_TYPE_ARG:
case GI_INFO_TYPE_TYPE:
case GI_INFO_TYPE_UNRESOLVED:
default:
g_warning ("TODO: proper return marshaling");
/* TODO: more marshalling of return types */
break;
}
}
break;
case GI_TYPE_TAG_ARRAY:
case GI_TYPE_TAG_GLIST:
case GI_TYPE_TAG_GSLIST:
case GI_TYPE_TAG_GHASH:
case GI_TYPE_TAG_ERROR:
break;
case GI_TYPE_TAG_UNICHAR:
{
gchar str[8];
str [g_unichar_to_utf8 (arg->v_int32, str)] = '\0';
g_value_init (value, G_TYPE_STRING);
g_value_set_string (value, str);
return TRUE;
}
default:
break;
}
g_set_error (error,
TMPL_ERROR,
TMPL_ERROR_TYPE_MISMATCH,
"Failed to decode value from GObject Introspection");
return FALSE;
}
|