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catch when adding an interface to an ancestor of a child that already

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Wed Mar  7 19:02:51 2001  Tim Janik  <timj@gtk.org>

        * gtype.c (type_node_add_iface_entry_W): catch when adding an interface
        to an ancestor of a child that already conforms to this interface.
        currently we spew a warning here, should we be silent?
        (g_type_interface_add_prerequisite): new function to add a prerequisite
        type to an interface, that must succeed an instance is_a prerequisite
        type check before the interface can be added to an instance. the
        prerequisite types are also suuported in is_a checks of the interface.
        (g_type_instance_is_a):
        (g_type_check_instance_cast):
        (g_type_check_instance): cleanups and optimizations.
        (g_type_class_is_a):
        (g_type_check_class_cast): same, also prevented these from accepting
        interface types, as class structures don't nest interfaces.
This commit is contained in:
Tim Janik
2001-03-07 19:36:02 +00:00
committed by Tim Janik
parent 7208b0f183
commit 6c56b65f51
3 changed files with 407 additions and 187 deletions
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40
gobject/gtype.h
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@@ -283,25 +283,27 @@ struct _GTypeValueTable
GTypeCValue *collect_values,
guint collect_flags);
};
GType g_type_register_static (GType parent_type,
const gchar *type_name,
const GTypeInfo *info,
GTypeFlags flags);
GType g_type_register_dynamic (GType parent_type,
const gchar *type_name,
GTypePlugin *plugin,
GTypeFlags flags);
GType g_type_register_fundamental (GType type_id,
const gchar *type_name,
const GTypeInfo *info,
const GTypeFundamentalInfo *finfo,
GTypeFlags flags);
void g_type_add_interface_static (GType instance_type,
GType interface_type,
const GInterfaceInfo *info);
void g_type_add_interface_dynamic (GType instance_type,
GType interface_type,
GTypePlugin *plugin);
GType g_type_register_static (GType parent_type,
const gchar *type_name,
const GTypeInfo *info,
GTypeFlags flags);
GType g_type_register_dynamic (GType parent_type,
const gchar *type_name,
GTypePlugin *plugin,
GTypeFlags flags);
GType g_type_register_fundamental (GType type_id,
const gchar *type_name,
const GTypeInfo *info,
const GTypeFundamentalInfo *finfo,
GTypeFlags flags);
void g_type_add_interface_static (GType instance_type,
GType interface_type,
const GInterfaceInfo *info);
void g_type_add_interface_dynamic (GType instance_type,
GType interface_type,
GTypePlugin *plugin);
void g_type_interface_add_prerequisite (GType interface_type,
GType prerequisite_type);
/* --- protected (for fundamental type implementations) --- */