epoc32/include/stdapis/glib-2.0/gobject/gvaluecollector.h
branchSymbian2
changeset 2 2fe1408b6811
parent 0 061f57f2323e
--- a/epoc32/include/stdapis/glib-2.0/gobject/gvaluecollector.h	Tue Nov 24 13:55:44 2009 +0000
+++ b/epoc32/include/stdapis/glib-2.0/gobject/gvaluecollector.h	Tue Mar 16 16:12:26 2010 +0000
@@ -1,1 +1,160 @@
-gvaluecollector.h
+/* GObject - GLib Type, Object, Parameter and Signal Library
+ * Copyright (C) 1998-1999, 2000-2001 Tim Janik and Red Hat, Inc.
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 Lesser General
+ * Public License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * gvaluecollector.h: GValue varargs stubs
+ */
+#ifndef __G_VALUE_COLLECTOR_H__
+#define __G_VALUE_COLLECTOR_H__
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+/* we may want to add aggregate types here some day, if requested
+ * by users. the basic C types are covered already, everything
+ * smaller than an int is promoted to an integer and floats are
+ * always promoted to doubles for varargs call constructions.
+ */
+enum	/*< skip >*/
+{
+  G_VALUE_COLLECT_INT		= 'i',
+  G_VALUE_COLLECT_LONG		= 'l',
+  G_VALUE_COLLECT_INT64         = 'q',
+  G_VALUE_COLLECT_DOUBLE	= 'd',
+  G_VALUE_COLLECT_POINTER	= 'p'
+};
+
+
+/* vararg union holding actuall values collected
+ */
+union _GTypeCValue
+{
+  gint     v_int;
+  glong    v_long;
+  gint64   v_int64;
+  gdouble  v_double;
+  gpointer v_pointer;
+};
+
+
+/* G_VALUE_COLLECT() collects a variable argument value
+ * from a va_list. we have to implement the varargs collection as a
+ * macro, because on some systems va_list variables cannot be passed
+ * by reference.
+ * value is supposed to be initialized according to the value
+ * type to be collected.
+ * var_args is the va_list variable and may be evaluated multiple times.
+ * __error is a gchar** variable that will be modified to hold a g_new()
+ * allocated error messages if something fails.
+ */
+#define G_VALUE_COLLECT(value, var_args, flags, __error)				\
+G_STMT_START {										\
+  GValue *_value = (value);								\
+  guint _flags = (flags);								\
+  GType _value_type = G_VALUE_TYPE (_value);						\
+  GTypeValueTable *_vtable = g_type_value_table_peek (_value_type);			\
+  gchar *_collect_format = _vtable->collect_format;					\
+  GTypeCValue _cvalues[G_VALUE_COLLECT_FORMAT_MAX_LENGTH] = { { 0, }, };		\
+  guint _n_values = 0;									\
+                                                                                        \
+  if (_vtable->value_free)								\
+    _vtable->value_free (_value);							\
+  _value->g_type = _value_type;		/* value_meminit() from gvalue.c */		\
+  memset (_value->data, 0, sizeof (_value->data));					\
+  while (*_collect_format)								\
+    {											\
+      GTypeCValue *_cvalue = _cvalues + _n_values++;					\
+                                                                                        \
+      switch (*_collect_format++)							\
+	{										\
+	case G_VALUE_COLLECT_INT:							\
+	  _cvalue->v_int = va_arg ((var_args), gint);					\
+	  break;									\
+	case G_VALUE_COLLECT_LONG:							\
+	  _cvalue->v_long = va_arg ((var_args), glong);					\
+	  break;									\
+	case G_VALUE_COLLECT_INT64:							\
+	  _cvalue->v_int64 = va_arg ((var_args), gint64);				\
+	  break;									\
+	case G_VALUE_COLLECT_DOUBLE:							\
+	  _cvalue->v_double = va_arg ((var_args), gdouble);				\
+	  break;									\
+	case G_VALUE_COLLECT_POINTER:							\
+	  _cvalue->v_pointer = va_arg ((var_args), gpointer);				\
+	  break;									\
+	default:									\
+	  g_assert_not_reached ();							\
+	}										\
+    }											\
+  *(__error) = _vtable->collect_value (_value,						\
+				       _n_values,					\
+				       _cvalues,					\
+				       _flags);						\
+} G_STMT_END
+
+
+/* G_VALUE_LCOPY() collects a value's variable argument
+ * locations from a va_list. usage is analogous to G_VALUE_COLLECT().
+ */
+#define G_VALUE_LCOPY(value, var_args, flags, __error)					\
+G_STMT_START {										\
+  const GValue *_value = (value);							\
+  guint _flags = (flags);								\
+  GType _value_type = G_VALUE_TYPE (_value);						\
+  GTypeValueTable *_vtable = g_type_value_table_peek (_value_type);			\
+  gchar *_lcopy_format = _vtable->lcopy_format;						\
+  GTypeCValue _cvalues[G_VALUE_COLLECT_FORMAT_MAX_LENGTH] = { { 0, }, };		\
+  guint _n_values = 0;									\
+                                                                                        \
+  while (*_lcopy_format)								\
+    {											\
+      GTypeCValue *_cvalue = _cvalues + _n_values++;					\
+                                                                                        \
+      switch (*_lcopy_format++)								\
+	{										\
+	case G_VALUE_COLLECT_INT:							\
+	  _cvalue->v_int = va_arg ((var_args), gint);					\
+	  break;									\
+	case G_VALUE_COLLECT_LONG:							\
+	  _cvalue->v_long = va_arg ((var_args), glong);					\
+	  break;									\
+	case G_VALUE_COLLECT_INT64:							\
+	  _cvalue->v_int64 = va_arg ((var_args), gint64);				\
+	  break;									\
+	case G_VALUE_COLLECT_DOUBLE:							\
+	  _cvalue->v_double = va_arg ((var_args), gdouble);				\
+	  break;									\
+	case G_VALUE_COLLECT_POINTER:							\
+	  _cvalue->v_pointer = va_arg ((var_args), gpointer);				\
+	  break;									\
+	default:									\
+	  g_assert_not_reached ();							\
+	}										\
+    }											\
+  *(__error) = _vtable->lcopy_value (_value,						\
+				     _n_values,						\
+				     _cvalues,						\
+				     _flags);						\
+} G_STMT_END
+
+
+#define	G_VALUE_COLLECT_FORMAT_MAX_LENGTH	(8)
+
+G_END_DECLS
+
+#endif /* __G_VALUE_COLLECTOR_H__ */