1 /* GObject - GLib Type, Object, Parameter and Signal Library
2 * Copyright (C) 1997-1999, 2000-2001 Tim Janik and Red Hat, Inc.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General
15 * Public License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
17 * Boston, MA 02111-1307, USA.
27 #include <stdlib.h> /* qsort() */
29 #include "gvaluetypes.h"
30 #include "gvaluecollector.h"
36 #include "gobjectalias.h"
39 /* --- value functions --- */
41 value_init_long0 (GValue *value)
43 value->data[0].v_long = 0;
47 value_copy_long0 (const GValue *src_value,
50 dest_value->data[0].v_long = src_value->data[0].v_long;
54 value_lcopy_char (const GValue *value,
55 guint n_collect_values,
56 GTypeCValue *collect_values,
59 gint8 *int8_p = collect_values[0].v_pointer;
62 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
64 *int8_p = value->data[0].v_int;
70 value_lcopy_boolean (const GValue *value,
71 guint n_collect_values,
72 GTypeCValue *collect_values,
75 gboolean *bool_p = collect_values[0].v_pointer;
78 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
80 *bool_p = value->data[0].v_int;
86 value_collect_int (GValue *value,
87 guint n_collect_values,
88 GTypeCValue *collect_values,
91 value->data[0].v_int = collect_values[0].v_int;
97 value_lcopy_int (const GValue *value,
98 guint n_collect_values,
99 GTypeCValue *collect_values,
102 gint *int_p = collect_values[0].v_pointer;
105 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
107 *int_p = value->data[0].v_int;
113 value_collect_long (GValue *value,
114 guint n_collect_values,
115 GTypeCValue *collect_values,
118 value->data[0].v_long = collect_values[0].v_long;
124 value_lcopy_long (const GValue *value,
125 guint n_collect_values,
126 GTypeCValue *collect_values,
129 glong *long_p = collect_values[0].v_pointer;
132 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
134 *long_p = value->data[0].v_long;
140 value_init_int64 (GValue *value)
142 value->data[0].v_int64 = 0;
146 value_copy_int64 (const GValue *src_value,
149 dest_value->data[0].v_int64 = src_value->data[0].v_int64;
153 value_collect_int64 (GValue *value,
154 guint n_collect_values,
155 GTypeCValue *collect_values,
158 value->data[0].v_int64 = collect_values[0].v_int64;
164 value_lcopy_int64 (const GValue *value,
165 guint n_collect_values,
166 GTypeCValue *collect_values,
169 gint64 *int64_p = collect_values[0].v_pointer;
172 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
174 *int64_p = value->data[0].v_int64;
180 value_init_float (GValue *value)
182 value->data[0].v_float = 0.0;
186 value_copy_float (const GValue *src_value,
189 dest_value->data[0].v_float = src_value->data[0].v_float;
193 value_collect_float (GValue *value,
194 guint n_collect_values,
195 GTypeCValue *collect_values,
198 value->data[0].v_float = collect_values[0].v_double;
204 value_lcopy_float (const GValue *value,
205 guint n_collect_values,
206 GTypeCValue *collect_values,
209 gfloat *float_p = collect_values[0].v_pointer;
212 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
214 *float_p = value->data[0].v_float;
220 value_init_double (GValue *value)
222 value->data[0].v_double = 0.0;
226 value_copy_double (const GValue *src_value,
229 dest_value->data[0].v_double = src_value->data[0].v_double;
233 value_collect_double (GValue *value,
234 guint n_collect_values,
235 GTypeCValue *collect_values,
238 value->data[0].v_double = collect_values[0].v_double;
244 value_lcopy_double (const GValue *value,
245 guint n_collect_values,
246 GTypeCValue *collect_values,
249 gdouble *double_p = collect_values[0].v_pointer;
252 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
254 *double_p = value->data[0].v_double;
260 value_init_string (GValue *value)
262 value->data[0].v_pointer = NULL;
266 value_free_string (GValue *value)
268 if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
269 g_free (value->data[0].v_pointer);
273 value_copy_string (const GValue *src_value,
276 dest_value->data[0].v_pointer = g_strdup (src_value->data[0].v_pointer);
280 value_collect_string (GValue *value,
281 guint n_collect_values,
282 GTypeCValue *collect_values,
285 if (!collect_values[0].v_pointer)
286 value->data[0].v_pointer = NULL;
287 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
289 value->data[0].v_pointer = collect_values[0].v_pointer;
290 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
293 value->data[0].v_pointer = g_strdup (collect_values[0].v_pointer);
299 value_lcopy_string (const GValue *value,
300 guint n_collect_values,
301 GTypeCValue *collect_values,
304 gchar **string_p = collect_values[0].v_pointer;
307 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
309 if (!value->data[0].v_pointer)
311 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
312 *string_p = value->data[0].v_pointer;
314 *string_p = g_strdup (value->data[0].v_pointer);
320 value_init_pointer (GValue *value)
322 value->data[0].v_pointer = NULL;
326 value_copy_pointer (const GValue *src_value,
329 dest_value->data[0].v_pointer = src_value->data[0].v_pointer;
333 value_peek_pointer0 (const GValue *value)
335 return value->data[0].v_pointer;
339 value_collect_pointer (GValue *value,
340 guint n_collect_values,
341 GTypeCValue *collect_values,
344 value->data[0].v_pointer = collect_values[0].v_pointer;
350 value_lcopy_pointer (const GValue *value,
351 guint n_collect_values,
352 GTypeCValue *collect_values,
355 gpointer *pointer_p = collect_values[0].v_pointer;
358 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
360 *pointer_p = value->data[0].v_pointer;
366 /* --- type initialization --- */
368 g_value_types_init (void)
372 NULL, /* base_init */
373 NULL, /* base_destroy */
374 NULL, /* class_init */
375 NULL, /* class_destroy */
376 NULL, /* class_data */
377 0, /* instance_size */
379 NULL, /* instance_init */
380 NULL, /* value_table */
382 const GTypeFundamentalInfo finfo = { G_TYPE_FLAG_DERIVABLE, };
385 /* G_TYPE_CHAR / G_TYPE_UCHAR
388 static const GTypeValueTable value_table = {
389 value_init_long0, /* value_init */
390 NULL, /* value_free */
391 value_copy_long0, /* value_copy */
392 NULL, /* value_peek_pointer */
393 "i", /* collect_format */
394 value_collect_int, /* collect_value */
395 "p", /* lcopy_format */
396 value_lcopy_char, /* lcopy_value */
398 info.value_table = &value_table;
399 type = g_type_register_fundamental (G_TYPE_CHAR, g_intern_static_string ("gchar"), &info, &finfo, 0);
400 g_assert (type == G_TYPE_CHAR);
401 type = g_type_register_fundamental (G_TYPE_UCHAR, g_intern_static_string ("guchar"), &info, &finfo, 0);
402 g_assert (type == G_TYPE_UCHAR);
408 static const GTypeValueTable value_table = {
409 value_init_long0, /* value_init */
410 NULL, /* value_free */
411 value_copy_long0, /* value_copy */
412 NULL, /* value_peek_pointer */
413 "i", /* collect_format */
414 value_collect_int, /* collect_value */
415 "p", /* lcopy_format */
416 value_lcopy_boolean, /* lcopy_value */
418 info.value_table = &value_table;
419 type = g_type_register_fundamental (G_TYPE_BOOLEAN, g_intern_static_string ("gboolean"), &info, &finfo, 0);
420 g_assert (type == G_TYPE_BOOLEAN);
423 /* G_TYPE_INT / G_TYPE_UINT
426 static const GTypeValueTable value_table = {
427 value_init_long0, /* value_init */
428 NULL, /* value_free */
429 value_copy_long0, /* value_copy */
430 NULL, /* value_peek_pointer */
431 "i", /* collect_format */
432 value_collect_int, /* collect_value */
433 "p", /* lcopy_format */
434 value_lcopy_int, /* lcopy_value */
436 info.value_table = &value_table;
437 type = g_type_register_fundamental (G_TYPE_INT, g_intern_static_string ("gint"), &info, &finfo, 0);
438 g_assert (type == G_TYPE_INT);
439 type = g_type_register_fundamental (G_TYPE_UINT, g_intern_static_string ("guint"), &info, &finfo, 0);
440 g_assert (type == G_TYPE_UINT);
443 /* G_TYPE_LONG / G_TYPE_ULONG
446 static const GTypeValueTable value_table = {
447 value_init_long0, /* value_init */
448 NULL, /* value_free */
449 value_copy_long0, /* value_copy */
450 NULL, /* value_peek_pointer */
451 "l", /* collect_format */
452 value_collect_long, /* collect_value */
453 "p", /* lcopy_format */
454 value_lcopy_long, /* lcopy_value */
456 info.value_table = &value_table;
457 type = g_type_register_fundamental (G_TYPE_LONG, g_intern_static_string ("glong"), &info, &finfo, 0);
458 g_assert (type == G_TYPE_LONG);
459 type = g_type_register_fundamental (G_TYPE_ULONG, g_intern_static_string ("gulong"), &info, &finfo, 0);
460 g_assert (type == G_TYPE_ULONG);
463 /* G_TYPE_INT64 / G_TYPE_UINT64
466 static const GTypeValueTable value_table = {
467 value_init_int64, /* value_init */
468 NULL, /* value_free */
469 value_copy_int64, /* value_copy */
470 NULL, /* value_peek_pointer */
471 "q", /* collect_format */
472 value_collect_int64, /* collect_value */
473 "p", /* lcopy_format */
474 value_lcopy_int64, /* lcopy_value */
476 info.value_table = &value_table;
477 type = g_type_register_fundamental (G_TYPE_INT64, g_intern_static_string ("gint64"), &info, &finfo, 0);
478 g_assert (type == G_TYPE_INT64);
479 type = g_type_register_fundamental (G_TYPE_UINT64, g_intern_static_string ("guint64"), &info, &finfo, 0);
480 g_assert (type == G_TYPE_UINT64);
486 static const GTypeValueTable value_table = {
487 value_init_float, /* value_init */
488 NULL, /* value_free */
489 value_copy_float, /* value_copy */
490 NULL, /* value_peek_pointer */
491 "d", /* collect_format */
492 value_collect_float, /* collect_value */
493 "p", /* lcopy_format */
494 value_lcopy_float, /* lcopy_value */
496 info.value_table = &value_table;
497 type = g_type_register_fundamental (G_TYPE_FLOAT, g_intern_static_string ("gfloat"), &info, &finfo, 0);
498 g_assert (type == G_TYPE_FLOAT);
504 static const GTypeValueTable value_table = {
505 value_init_double, /* value_init */
506 NULL, /* value_free */
507 value_copy_double, /* value_copy */
508 NULL, /* value_peek_pointer */
509 "d", /* collect_format */
510 value_collect_double, /* collect_value */
511 "p", /* lcopy_format */
512 value_lcopy_double, /* lcopy_value */
514 info.value_table = &value_table;
515 type = g_type_register_fundamental (G_TYPE_DOUBLE, g_intern_static_string ("gdouble"), &info, &finfo, 0);
516 g_assert (type == G_TYPE_DOUBLE);
522 static const GTypeValueTable value_table = {
523 value_init_string, /* value_init */
524 value_free_string, /* value_free */
525 value_copy_string, /* value_copy */
526 value_peek_pointer0, /* value_peek_pointer */
527 "p", /* collect_format */
528 value_collect_string, /* collect_value */
529 "p", /* lcopy_format */
530 value_lcopy_string, /* lcopy_value */
532 info.value_table = &value_table;
533 type = g_type_register_fundamental (G_TYPE_STRING, g_intern_static_string ("gchararray"), &info, &finfo, 0);
534 g_assert (type == G_TYPE_STRING);
540 static const GTypeValueTable value_table = {
541 value_init_pointer, /* value_init */
542 NULL, /* value_free */
543 value_copy_pointer, /* value_copy */
544 value_peek_pointer0, /* value_peek_pointer */
545 "p", /* collect_format */
546 value_collect_pointer, /* collect_value */
547 "p", /* lcopy_format */
548 value_lcopy_pointer, /* lcopy_value */
550 info.value_table = &value_table;
551 type = g_type_register_fundamental (G_TYPE_POINTER, g_intern_static_string ("gpointer"), &info, &finfo, 0);
552 g_assert (type == G_TYPE_POINTER);
557 /* --- GValue functions --- */
560 * @value: a valid #GValue of type %G_TYPE_CHAR
561 * @v_char: character value to be set
563 * Set the contents of a %G_TYPE_CHAR #GValue to @v_char.
566 g_value_set_char (GValue *value,
569 g_return_if_fail (G_VALUE_HOLDS_CHAR (value));
571 value->data[0].v_int = v_char;
576 * @value: a valid #GValue of type %G_TYPE_CHAR
578 * Get the contents of a %G_TYPE_CHAR #GValue.
580 * Returns: character contents of @value
583 g_value_get_char (const GValue *value)
585 g_return_val_if_fail (G_VALUE_HOLDS_CHAR (value), 0);
587 return value->data[0].v_int;
592 * @value: a valid #GValue of type %G_TYPE_UCHAR
593 * @v_uchar: unsigned character value to be set
595 * Set the contents of a %G_TYPE_UCHAR #GValue to @v_uchar.
598 g_value_set_uchar (GValue *value,
601 g_return_if_fail (G_VALUE_HOLDS_UCHAR (value));
603 value->data[0].v_uint = v_uchar;
608 * @value: a valid #GValue of type %G_TYPE_UCHAR
610 * Get the contents of a %G_TYPE_UCHAR #GValue.
612 * Returns: unsigned character contents of @value
615 g_value_get_uchar (const GValue *value)
617 g_return_val_if_fail (G_VALUE_HOLDS_UCHAR (value), 0);
619 return value->data[0].v_uint;
623 * g_value_set_boolean:
624 * @value: a valid #GValue of type %G_TYPE_BOOLEAN
625 * @v_boolean: boolean value to be set
627 * Set the contents of a %G_TYPE_BOOLEAN #GValue to @v_boolean.
630 g_value_set_boolean (GValue *value,
633 g_return_if_fail (G_VALUE_HOLDS_BOOLEAN (value));
635 value->data[0].v_int = v_boolean != FALSE;
639 * g_value_get_boolean:
640 * @value: a valid #GValue of type %G_TYPE_BOOLEAN
642 * Get the contents of a %G_TYPE_BOOLEAN #GValue.
644 * Returns: boolean contents of @value
647 g_value_get_boolean (const GValue *value)
649 g_return_val_if_fail (G_VALUE_HOLDS_BOOLEAN (value), 0);
651 return value->data[0].v_int;
656 * @value: a valid #GValue of type %G_TYPE_INT
657 * @v_int: integer value to be set
659 * Set the contents of a %G_TYPE_INT #GValue to @v_int.
662 g_value_set_int (GValue *value,
665 g_return_if_fail (G_VALUE_HOLDS_INT (value));
667 value->data[0].v_int = v_int;
672 * @value: a valid #GValue of type %G_TYPE_INT
674 * Get the contents of a %G_TYPE_INT #GValue.
676 * Returns: integer contents of @value
679 g_value_get_int (const GValue *value)
681 g_return_val_if_fail (G_VALUE_HOLDS_INT (value), 0);
683 return value->data[0].v_int;
688 * @value: a valid #GValue of type %G_TYPE_UINT
689 * @v_uint: unsigned integer value to be set
691 * Set the contents of a %G_TYPE_UINT #GValue to @v_uint.
694 g_value_set_uint (GValue *value,
697 g_return_if_fail (G_VALUE_HOLDS_UINT (value));
699 value->data[0].v_uint = v_uint;
704 * @value: a valid #GValue of type %G_TYPE_UINT
706 * Get the contents of a %G_TYPE_UINT #GValue.
708 * Returns: unsigned integer contents of @value
711 g_value_get_uint (const GValue *value)
713 g_return_val_if_fail (G_VALUE_HOLDS_UINT (value), 0);
715 return value->data[0].v_uint;
720 * @value: a valid #GValue of type %G_TYPE_LONG
721 * @v_long: long integer value to be set
723 * Set the contents of a %G_TYPE_LONG #GValue to @v_long.
726 g_value_set_long (GValue *value,
729 g_return_if_fail (G_VALUE_HOLDS_LONG (value));
731 value->data[0].v_long = v_long;
736 * @value: a valid #GValue of type %G_TYPE_LONG
738 * Get the contents of a %G_TYPE_LONG #GValue.
740 * Returns: long integer contents of @value
743 g_value_get_long (const GValue *value)
745 g_return_val_if_fail (G_VALUE_HOLDS_LONG (value), 0);
747 return value->data[0].v_long;
752 * @value: a valid #GValue of type %G_TYPE_ULONG
753 * @v_ulong: unsigned long integer value to be set
755 * Set the contents of a %G_TYPE_ULONG #GValue to @v_ulong.
758 g_value_set_ulong (GValue *value,
761 g_return_if_fail (G_VALUE_HOLDS_ULONG (value));
763 value->data[0].v_ulong = v_ulong;
768 * @value: a valid #GValue of type %G_TYPE_ULONG
770 * Get the contents of a %G_TYPE_ULONG #GValue.
772 * Returns: unsigned long integer contents of @value
775 g_value_get_ulong (const GValue *value)
777 g_return_val_if_fail (G_VALUE_HOLDS_ULONG (value), 0);
779 return value->data[0].v_ulong;
784 * @value: a valid #GValue of type %G_TYPE_INT64
786 * Get the contents of a %G_TYPE_INT64 #GValue.
788 * Returns: 64bit integer contents of @value
791 g_value_set_int64 (GValue *value,
794 g_return_if_fail (G_VALUE_HOLDS_INT64 (value));
796 value->data[0].v_int64 = v_int64;
801 * @value: a valid #GValue of type %G_TYPE_INT64
802 * @v_int64: 64bit integer value to be set
804 * Set the contents of a %G_TYPE_INT64 #GValue to @v_int64.
807 g_value_get_int64 (const GValue *value)
809 g_return_val_if_fail (G_VALUE_HOLDS_INT64 (value), 0);
811 return value->data[0].v_int64;
815 * g_value_set_uint64:
816 * @value: a valid #GValue of type %G_TYPE_UINT64
817 * @v_uint64: unsigned 64bit integer value to be set
819 * Set the contents of a %G_TYPE_UINT64 #GValue to @v_uint64.
822 g_value_set_uint64 (GValue *value,
825 g_return_if_fail (G_VALUE_HOLDS_UINT64 (value));
827 value->data[0].v_uint64 = v_uint64;
831 * g_value_get_uint64:
832 * @value: a valid #GValue of type %G_TYPE_UINT64
834 * Get the contents of a %G_TYPE_UINT64 #GValue.
836 * Returns: unsigned 64bit integer contents of @value
839 g_value_get_uint64 (const GValue *value)
841 g_return_val_if_fail (G_VALUE_HOLDS_UINT64 (value), 0);
843 return value->data[0].v_uint64;
848 * @value: a valid #GValue of type %G_TYPE_FLOAT
849 * @v_float: float value to be set
851 * Set the contents of a %G_TYPE_FLOAT #GValue to @v_float.
854 g_value_set_float (GValue *value,
857 g_return_if_fail (G_VALUE_HOLDS_FLOAT (value));
859 value->data[0].v_float = v_float;
864 * @value: a valid #GValue of type %G_TYPE_FLOAT
866 * Get the contents of a %G_TYPE_FLOAT #GValue.
868 * Returns: float contents of @value
871 g_value_get_float (const GValue *value)
873 g_return_val_if_fail (G_VALUE_HOLDS_FLOAT (value), 0);
875 return value->data[0].v_float;
879 * g_value_set_double:
880 * @value: a valid #GValue of type %G_TYPE_DOUBLE
881 * @v_double: double value to be set
883 * Set the contents of a %G_TYPE_DOUBLE #GValue to @v_double.
886 g_value_set_double (GValue *value,
889 g_return_if_fail (G_VALUE_HOLDS_DOUBLE (value));
891 value->data[0].v_double = v_double;
895 * g_value_get_double:
896 * @value: a valid #GValue of type %G_TYPE_DOUBLE
898 * Get the contents of a %G_TYPE_DOUBLE #GValue.
900 * Returns: double contents of @value
903 g_value_get_double (const GValue *value)
905 g_return_val_if_fail (G_VALUE_HOLDS_DOUBLE (value), 0);
907 return value->data[0].v_double;
911 * g_value_set_string:
912 * @value: a valid #GValue of type %G_TYPE_STRING
913 * @v_string: string to be set
915 * Set the contents of a %G_TYPE_STRING #GValue to @v_string.
918 g_value_set_string (GValue *value,
919 const gchar *v_string)
923 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
925 new_val = g_strdup (v_string);
927 if (value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS)
928 value->data[1].v_uint = 0;
930 g_free (value->data[0].v_pointer);
932 value->data[0].v_pointer = new_val;
936 * g_value_set_static_string:
937 * @value: a valid #GValue of type %G_TYPE_STRING
938 * @v_string: static string to be set
940 * Set the contents of a %G_TYPE_STRING #GValue to @v_string.
941 * The string is assumed to be static, and is thus not duplicated
942 * when setting the #GValue.
945 g_value_set_static_string (GValue *value,
946 const gchar *v_string)
948 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
950 if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
951 g_free (value->data[0].v_pointer);
952 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
953 value->data[0].v_pointer = (gchar*) v_string;
957 * g_value_set_string_take_ownership:
958 * @value: a valid #GValue of type %G_TYPE_STRING
959 * @v_string: duplicated unowned string to be set
961 * This is an internal function introduced mainly for C marshallers.
963 * Deprecated: 2.4: Use g_value_take_string() instead.
966 g_value_set_string_take_ownership (GValue *value,
969 g_value_take_string (value, v_string);
973 * g_value_take_string:
974 * @value: a valid #GValue of type %G_TYPE_STRING
975 * @v_string: duplicated unowned string to be set
977 * Sets the contents of a %G_TYPE_STRING #GValue to @v_string.
982 g_value_take_string (GValue *value,
985 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
987 if (value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS)
988 value->data[1].v_uint = 0;
990 g_free (value->data[0].v_pointer);
991 value->data[0].v_pointer = v_string;
995 * g_value_get_string:
996 * @value: a valid #GValue of type %G_TYPE_STRING
998 * Get the contents of a %G_TYPE_STRING #GValue.
1000 * Returns: string content of @value
1002 G_CONST_RETURN gchar*
1003 g_value_get_string (const GValue *value)
1005 g_return_val_if_fail (G_VALUE_HOLDS_STRING (value), NULL);
1007 return value->data[0].v_pointer;
1011 * g_value_dup_string:
1012 * @value: a valid #GValue of type %G_TYPE_STRING
1014 * Get a copy the contents of a %G_TYPE_STRING #GValue.
1016 * Returns: a newly allocated copy of the string content of @value
1019 g_value_dup_string (const GValue *value)
1021 g_return_val_if_fail (G_VALUE_HOLDS_STRING (value), NULL);
1023 return g_strdup (value->data[0].v_pointer);
1027 * g_value_set_pointer:
1028 * @value: a valid #GValue of %G_TYPE_POINTER
1029 * @v_pointer: pointer value to be set
1031 * Set the contents of a pointer #GValue to @v_pointer.
1034 g_value_set_pointer (GValue *value,
1037 g_return_if_fail (G_VALUE_HOLDS_POINTER (value));
1039 value->data[0].v_pointer = v_pointer;
1043 * g_value_get_pointer:
1044 * @value: a valid #GValue of %G_TYPE_POINTER
1046 * Get the contents of a pointer #GValue.
1048 * Returns: pointer contents of @value
1051 g_value_get_pointer (const GValue *value)
1053 g_return_val_if_fail (G_VALUE_HOLDS_POINTER (value), NULL);
1055 return value->data[0].v_pointer;
1059 g_gtype_get_type (void)
1061 static const GTypeInfo type_info = { 0, };
1064 type = g_type_register_static (G_TYPE_POINTER, g_intern_static_string ("GType"), &type_info, 0);
1069 * g_value_set_gtype:
1070 * @value: a valid #GValue of type %G_TYPE_GTYPE
1071 * @v_gtype: #GType to be set
1073 * Set the contents of a %G_TYPE_GTYPE #GValue to @v_gtype.
1078 g_value_set_gtype (GValue *value,
1081 g_return_if_fail (G_VALUE_HOLDS_GTYPE (value));
1083 value->data[0].v_long = v_gtype;
1088 * g_value_get_gtype:
1089 * @value: a valid #GValue of type %G_TYPE_GTYPE
1091 * Get the contents of a %G_TYPE_GTYPE #GValue.
1094 * Returns: the #GType stored in @value
1097 g_value_get_gtype (const GValue *value)
1099 g_return_val_if_fail (G_VALUE_HOLDS_GTYPE (value), 0);
1101 return value->data[0].v_long;
1105 * g_strdup_value_contents:
1106 * @value: #GValue which contents are to be described.
1108 * Return a newly allocated string, which describes the contents of a #GValue.
1109 * The main purpose of this function is to describe #GValue contents for
1110 * debugging output, the way in which the contents are described may change
1111 * between different GLib versions.
1113 * Returns: Newly allocated string.
1116 g_strdup_value_contents (const GValue *value)
1121 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1123 if (G_VALUE_HOLDS_STRING (value))
1125 src = g_value_get_string (value);
1128 contents = g_strdup ("NULL");
1131 gchar *s = g_strescape (src, NULL);
1133 contents = g_strdup_printf ("\"%s\"", s);
1137 else if (g_value_type_transformable (G_VALUE_TYPE (value), G_TYPE_STRING))
1139 GValue tmp_value = { 0, };
1142 g_value_init (&tmp_value, G_TYPE_STRING);
1143 g_value_transform (value, &tmp_value);
1144 s = g_strescape (g_value_get_string (&tmp_value), NULL);
1145 g_value_unset (&tmp_value);
1146 if (G_VALUE_HOLDS_ENUM (value) || G_VALUE_HOLDS_FLAGS (value))
1147 contents = g_strdup_printf ("((%s) %s)",
1148 g_type_name (G_VALUE_TYPE (value)),
1151 contents = g_strdup (s ? s : "NULL");
1154 else if (g_value_fits_pointer (value))
1156 gpointer p = g_value_peek_pointer (value);
1159 contents = g_strdup ("NULL");
1160 else if (G_VALUE_HOLDS_OBJECT (value))
1161 contents = g_strdup_printf ("((%s*) %p)", G_OBJECT_TYPE_NAME (p), p);
1162 else if (G_VALUE_HOLDS_PARAM (value))
1163 contents = g_strdup_printf ("((%s*) %p)", G_PARAM_SPEC_TYPE_NAME (p), p);
1164 else if (G_VALUE_HOLDS_BOXED (value))
1165 contents = g_strdup_printf ("((%s*) %p)", g_type_name (G_VALUE_TYPE (value)), p);
1166 else if (G_VALUE_HOLDS_POINTER (value))
1167 contents = g_strdup_printf ("((gpointer) %p)", p);
1169 contents = g_strdup ("???");
1172 contents = g_strdup ("???");
1178 * g_pointer_type_register_static:
1179 * @name: the name of the new pointer type.
1181 * Creates a new %G_TYPE_POINTER derived type id for a new
1182 * pointer type with name @name.
1184 * Returns: a new %G_TYPE_POINTER derived type id for @name.
1187 g_pointer_type_register_static (const gchar *name)
1189 static const GTypeInfo type_info = {
1191 NULL, /* base_init */
1192 NULL, /* base_finalize */
1193 NULL, /* class_init */
1194 NULL, /* class_finalize */
1195 NULL, /* class_data */
1196 0, /* instance_size */
1197 0, /* n_preallocs */
1198 NULL, /* instance_init */
1199 NULL /* value_table */
1203 g_return_val_if_fail (name != NULL, 0);
1204 g_return_val_if_fail (g_type_from_name (name) == 0, 0);
1206 type = g_type_register_static (G_TYPE_POINTER, name, &type_info, 0);
1211 #define __G_VALUETYPES_C__
1212 #include "gobjectaliasdef.c"