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fixed dealing with collection/lcopy of NULL values.

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Mon Dec 11 04:44:11 2000  Tim Janik  <timj@gtk.org>

	* gboxed.c: fixed dealing with collection/lcopy of NULL values.

	* gclosure.h: removed insane ramblings, added G_CALLBACK() a casting
	convenience macro.

	* Makefile.am: cleanups, marshaller generation rules.

	* gmarshal.[hc]: new files with GRuntime standard marshallers.

	* glib-genmarshal.c: fix log domain, support gruntime standard
	marshallers, suport G_TYPE_PARAM, come with extern "C" and
	#include gmarshal.h.

	* glib-genmarshal.1: reflect glib-genmarshal.c updates.

	* gobject.[hc]: implement object constructor. rework parameter
	changed notification queueing, we support queue freezes now and
	don't dispatch from an idle handler anymore.
	parameter->property rename hassle.
	implemented ::properties_changed and ::notify::* signals for
	property change notification (the later supports property names
	as details). added signal connection and named data properties.
	(g_signal_connect_object): new function to setup while_alive
	connections.
	(g_object_class_install_property): sink properties now, since they
	are initially floating.
	(g_object_steal_data):
	(g_object_set_data_full):
	(g_object_set_data):
	(g_object_get_data): set/get data by using g_datalist_*() functions
	directly.
	(g_object_queue_param_changed): nuked.
	(g_object_freeze_notify): start queueing of property changes (freeze/
	thaw calls stack).
	(g_object_notify): announce changes of a certain property directly.
	(g_object_thaw_notify): process queue of property changes, therefore
	emitting GObject::notify::detail with detail being the changed
	properties names.
	(G_OBJECT_WARN_INVALID_PROPERTY_ID): saner macro variant of former
	G_WARN_INVALID_PARAM_ID().

	* gparam.[hc]: param specs are now initially floating and need to be
	sunken with g_param_spec_sink(), support G_TYPE_PARAM values.
	added G_PARAM_CONSTRUCT and G_PARAM_CONSTRUCT_ONLY parameter flags,
	required by GObjectClass.constructor().

	* gparamspecs.[hc]: added GParamSpecParam, GParamSpecPointer and
	GParamSpecCCallback, param specs for G_TYPE_PARAM, G_TYPE_POINTER
	and G_TYPE_CCALLBACK respectively.

	* gsignal.[hc]: cleanups.
	(signal_id_lookup): after walking the anchestry, try interfaces as well.
	(g_signal_new): new function to create signals from varargs type list.
	(g_signal_connect_closure): closure connection variant that works from
	signal name+detail.
	(g_signal_connect_data): c handler connection variant that works from
	signal name+detail.
	(g_signal_emit_valist): emit signal for an instance with paraneters
	collected from a va_list.
	(g_signal_emit): emit signal, taking parameters from varargs list.
	(g_signal_emit_by_name): same as g_signal_emit, working from
	signal name+detail.
	(signal_emit_R): return whether return_value needs to be altered.

	* gtype.[hc]: set log-domain to GRuntime, i'm slowly getting to all
	the points that need to reflect the upcoming rename.
	melt g_type_conforms_to() functionality into g_type_is_a(), as that
	is what we really want (liskov substitution principle).
	assorted changes to other files due to conforms_to->is_a.

	* gvalue.[hc]: implemented g_value_set_instance() that sets a value
	from an instantiatable type via the value_table's collect_value()
	function (based on an idea from James Henstridge <james@daa.com.au>).
	cleanups/fixes.

	* gvaluetypes.[hc]: implement G_TYPE_CCALLBACK and G_TYPE_PARAM.
This commit is contained in:
Tim Janik
2000-12-12 07:32:00 +00:00
committed by Tim Janik
parent cbd74878d1
commit e773d7dba6
44 changed files with 2926 additions and 1383 deletions
Download Patch File Download Diff File Expand all files Collapse all files

54
gobject/gvalue.c
View File

@@ -20,6 +20,7 @@
#include <string.h>
#include "gvalue.h"
#include "gvaluecollector.h"
/* --- typedefs & structures --- */
@@ -66,7 +67,7 @@ g_value_copy (const GValue *src_value,
g_return_if_fail (G_IS_VALUE (src_value));
g_return_if_fail (G_IS_VALUE (dest_value));
g_return_if_fail (g_type_is_a (G_VALUE_TYPE (src_value), G_VALUE_TYPE (dest_value)));
value_table = g_type_value_table_peek (G_VALUE_TYPE (dest_value));
if (!value_table)
g_return_if_fail (g_type_value_table_peek (G_VALUE_TYPE (dest_value)) != NULL);
@@ -110,6 +111,54 @@ g_value_get_as_pointer (const GValue *value)
return value_table->value_peek_pointer (value);
}
void
g_value_set_instance (GValue *value,
gpointer instance)
{
g_return_if_fail (G_IS_VALUE (value));
g_value_reset (value);
if (instance)
{
GType g_type = G_VALUE_TYPE (value);
GTypeValueTable *value_table = g_type_value_table_peek (g_type);
GTypeCValue cvalue = { 0, };
guint nth_value = 0;
guint collect_type = value_table->collect_type;
gchar *error_msg;
g_return_if_fail (G_TYPE_CHECK_INSTANCE (instance));
g_return_if_fail (g_type_is_a (G_TYPE_FROM_INSTANCE (instance), G_VALUE_TYPE (value)));
g_return_if_fail (value_table->collect_type == G_VALUE_COLLECT_POINTER);
cvalue.v_pointer = instance;
error_msg = value_table->collect_value (value, nth_value++, &collect_type, &cvalue);
/* this shouldn't be triggered, instance types should collect just one pointer,
* but since we have to follow the calling conventions for collect_value(),
* we can attempt to feed them with 0s if they insist on extra args.
*/
while (collect_type && !error_msg)
{
memset (&cvalue, 0, sizeof (cvalue));
error_msg = value_table->collect_value (value, nth_value++, &collect_type, &cvalue);
}
if (error_msg)
{
g_warning ("%s: %s", G_STRLOC, error_msg);
g_free (error_msg);
/* we purposely leak the value here, it might not be
* in a sane state if an error condition occoured
*/
memset (value, 0, sizeof (*value));
value->g_type = g_type;
value_table->value_init (value);
}
}
}
void
g_value_unset (GValue *value)
{
@@ -127,11 +176,12 @@ g_value_unset (GValue *value)
void
g_value_reset (GValue *value)
{
GTypeValueTable *value_table = g_type_value_table_peek (G_VALUE_TYPE (value));
GTypeValueTable *value_table;
GType g_type;
g_return_if_fail (G_IS_VALUE (value));
value_table = g_type_value_table_peek (G_VALUE_TYPE (value));
g_type = G_VALUE_TYPE (value);
if (value_table->value_free)