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.
24 #include "gvaluetypes.h"
26 #include "gvaluecollector.h"
33 #include "gobjectalias.h"
35 #include <stdlib.h> /* qsort() */
38 /* --- value functions --- */
40 value_init_long0 (GValue *value)
42 value->data[0].v_long = 0;
46 value_copy_long0 (const GValue *src_value,
49 dest_value->data[0].v_long = src_value->data[0].v_long;
53 value_lcopy_char (const GValue *value,
54 guint n_collect_values,
55 GTypeCValue *collect_values,
58 gint8 *int8_p = collect_values[0].v_pointer;
61 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
63 *int8_p = value->data[0].v_int;
69 value_lcopy_boolean (const GValue *value,
70 guint n_collect_values,
71 GTypeCValue *collect_values,
74 gboolean *bool_p = collect_values[0].v_pointer;
77 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
79 *bool_p = value->data[0].v_int;
85 value_collect_int (GValue *value,
86 guint n_collect_values,
87 GTypeCValue *collect_values,
90 value->data[0].v_int = collect_values[0].v_int;
96 value_lcopy_int (const GValue *value,
97 guint n_collect_values,
98 GTypeCValue *collect_values,
101 gint *int_p = collect_values[0].v_pointer;
104 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
106 *int_p = value->data[0].v_int;
112 value_collect_long (GValue *value,
113 guint n_collect_values,
114 GTypeCValue *collect_values,
117 value->data[0].v_long = collect_values[0].v_long;
123 value_lcopy_long (const GValue *value,
124 guint n_collect_values,
125 GTypeCValue *collect_values,
128 glong *long_p = collect_values[0].v_pointer;
131 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
133 *long_p = value->data[0].v_long;
139 value_init_int64 (GValue *value)
141 value->data[0].v_int64 = 0;
145 value_copy_int64 (const GValue *src_value,
148 dest_value->data[0].v_int64 = src_value->data[0].v_int64;
152 value_collect_int64 (GValue *value,
153 guint n_collect_values,
154 GTypeCValue *collect_values,
157 value->data[0].v_int64 = collect_values[0].v_int64;
163 value_lcopy_int64 (const GValue *value,
164 guint n_collect_values,
165 GTypeCValue *collect_values,
168 gint64 *int64_p = collect_values[0].v_pointer;
171 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
173 *int64_p = value->data[0].v_int64;
179 value_init_float (GValue *value)
181 value->data[0].v_float = 0.0;
185 value_copy_float (const GValue *src_value,
188 dest_value->data[0].v_float = src_value->data[0].v_float;
192 value_collect_float (GValue *value,
193 guint n_collect_values,
194 GTypeCValue *collect_values,
197 value->data[0].v_float = collect_values[0].v_double;
203 value_lcopy_float (const GValue *value,
204 guint n_collect_values,
205 GTypeCValue *collect_values,
208 gfloat *float_p = collect_values[0].v_pointer;
211 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
213 *float_p = value->data[0].v_float;
219 value_init_double (GValue *value)
221 value->data[0].v_double = 0.0;
225 value_copy_double (const GValue *src_value,
228 dest_value->data[0].v_double = src_value->data[0].v_double;
232 value_collect_double (GValue *value,
233 guint n_collect_values,
234 GTypeCValue *collect_values,
237 value->data[0].v_double = collect_values[0].v_double;
243 value_lcopy_double (const GValue *value,
244 guint n_collect_values,
245 GTypeCValue *collect_values,
248 gdouble *double_p = collect_values[0].v_pointer;
251 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
253 *double_p = value->data[0].v_double;
259 value_init_string (GValue *value)
261 value->data[0].v_pointer = NULL;
265 value_free_string (GValue *value)
267 if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
268 g_free (value->data[0].v_pointer);
272 value_copy_string (const GValue *src_value,
275 dest_value->data[0].v_pointer = g_strdup (src_value->data[0].v_pointer);
279 value_collect_string (GValue *value,
280 guint n_collect_values,
281 GTypeCValue *collect_values,
284 if (!collect_values[0].v_pointer)
285 value->data[0].v_pointer = NULL;
286 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
288 value->data[0].v_pointer = collect_values[0].v_pointer;
289 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
292 value->data[0].v_pointer = g_strdup (collect_values[0].v_pointer);
298 value_lcopy_string (const GValue *value,
299 guint n_collect_values,
300 GTypeCValue *collect_values,
303 gchar **string_p = collect_values[0].v_pointer;
306 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
308 if (!value->data[0].v_pointer)
310 else if (collect_flags & G_VALUE_NOCOPY_CONTENTS)
311 *string_p = value->data[0].v_pointer;
313 *string_p = g_strdup (value->data[0].v_pointer);
319 value_init_pointer (GValue *value)
321 value->data[0].v_pointer = NULL;
325 value_copy_pointer (const GValue *src_value,
328 dest_value->data[0].v_pointer = src_value->data[0].v_pointer;
332 value_peek_pointer0 (const GValue *value)
334 return value->data[0].v_pointer;
338 value_collect_pointer (GValue *value,
339 guint n_collect_values,
340 GTypeCValue *collect_values,
343 value->data[0].v_pointer = collect_values[0].v_pointer;
349 value_lcopy_pointer (const GValue *value,
350 guint n_collect_values,
351 GTypeCValue *collect_values,
354 gpointer *pointer_p = collect_values[0].v_pointer;
357 return g_strdup_printf ("value location for `%s' passed as NULL", G_VALUE_TYPE_NAME (value));
359 *pointer_p = value->data[0].v_pointer;
365 /* --- type initialization --- */
367 g_value_types_init (void)
371 NULL, /* base_init */
372 NULL, /* base_destroy */
373 NULL, /* class_init */
374 NULL, /* class_destroy */
375 NULL, /* class_data */
376 0, /* instance_size */
378 NULL, /* instance_init */
379 NULL, /* value_table */
381 const GTypeFundamentalInfo finfo = { G_TYPE_FLAG_DERIVABLE, };
384 /* G_TYPE_CHAR / G_TYPE_UCHAR
387 static const GTypeValueTable value_table = {
388 value_init_long0, /* value_init */
389 NULL, /* value_free */
390 value_copy_long0, /* value_copy */
391 NULL, /* value_peek_pointer */
392 "i", /* collect_format */
393 value_collect_int, /* collect_value */
394 "p", /* lcopy_format */
395 value_lcopy_char, /* lcopy_value */
397 info.value_table = &value_table;
398 type = g_type_register_fundamental (G_TYPE_CHAR, g_intern_static_string ("gchar"), &info, &finfo, 0);
399 g_assert (type == G_TYPE_CHAR);
400 type = g_type_register_fundamental (G_TYPE_UCHAR, g_intern_static_string ("guchar"), &info, &finfo, 0);
401 g_assert (type == G_TYPE_UCHAR);
407 static const GTypeValueTable value_table = {
408 value_init_long0, /* value_init */
409 NULL, /* value_free */
410 value_copy_long0, /* value_copy */
411 NULL, /* value_peek_pointer */
412 "i", /* collect_format */
413 value_collect_int, /* collect_value */
414 "p", /* lcopy_format */
415 value_lcopy_boolean, /* lcopy_value */
417 info.value_table = &value_table;
418 type = g_type_register_fundamental (G_TYPE_BOOLEAN, g_intern_static_string ("gboolean"), &info, &finfo, 0);
419 g_assert (type == G_TYPE_BOOLEAN);
422 /* G_TYPE_INT / G_TYPE_UINT
425 static const GTypeValueTable value_table = {
426 value_init_long0, /* value_init */
427 NULL, /* value_free */
428 value_copy_long0, /* value_copy */
429 NULL, /* value_peek_pointer */
430 "i", /* collect_format */
431 value_collect_int, /* collect_value */
432 "p", /* lcopy_format */
433 value_lcopy_int, /* lcopy_value */
435 info.value_table = &value_table;
436 type = g_type_register_fundamental (G_TYPE_INT, g_intern_static_string ("gint"), &info, &finfo, 0);
437 g_assert (type == G_TYPE_INT);
438 type = g_type_register_fundamental (G_TYPE_UINT, g_intern_static_string ("guint"), &info, &finfo, 0);
439 g_assert (type == G_TYPE_UINT);
442 /* G_TYPE_LONG / G_TYPE_ULONG
445 static const GTypeValueTable value_table = {
446 value_init_long0, /* value_init */
447 NULL, /* value_free */
448 value_copy_long0, /* value_copy */
449 NULL, /* value_peek_pointer */
450 "l", /* collect_format */
451 value_collect_long, /* collect_value */
452 "p", /* lcopy_format */
453 value_lcopy_long, /* lcopy_value */
455 info.value_table = &value_table;
456 type = g_type_register_fundamental (G_TYPE_LONG, g_intern_static_string ("glong"), &info, &finfo, 0);
457 g_assert (type == G_TYPE_LONG);
458 type = g_type_register_fundamental (G_TYPE_ULONG, g_intern_static_string ("gulong"), &info, &finfo, 0);
459 g_assert (type == G_TYPE_ULONG);
462 /* G_TYPE_INT64 / G_TYPE_UINT64
465 static const GTypeValueTable value_table = {
466 value_init_int64, /* value_init */
467 NULL, /* value_free */
468 value_copy_int64, /* value_copy */
469 NULL, /* value_peek_pointer */
470 "q", /* collect_format */
471 value_collect_int64, /* collect_value */
472 "p", /* lcopy_format */
473 value_lcopy_int64, /* lcopy_value */
475 info.value_table = &value_table;
476 type = g_type_register_fundamental (G_TYPE_INT64, g_intern_static_string ("gint64"), &info, &finfo, 0);
477 g_assert (type == G_TYPE_INT64);
478 type = g_type_register_fundamental (G_TYPE_UINT64, g_intern_static_string ("guint64"), &info, &finfo, 0);
479 g_assert (type == G_TYPE_UINT64);
485 static const GTypeValueTable value_table = {
486 value_init_float, /* value_init */
487 NULL, /* value_free */
488 value_copy_float, /* value_copy */
489 NULL, /* value_peek_pointer */
490 "d", /* collect_format */
491 value_collect_float, /* collect_value */
492 "p", /* lcopy_format */
493 value_lcopy_float, /* lcopy_value */
495 info.value_table = &value_table;
496 type = g_type_register_fundamental (G_TYPE_FLOAT, g_intern_static_string ("gfloat"), &info, &finfo, 0);
497 g_assert (type == G_TYPE_FLOAT);
503 static const GTypeValueTable value_table = {
504 value_init_double, /* value_init */
505 NULL, /* value_free */
506 value_copy_double, /* value_copy */
507 NULL, /* value_peek_pointer */
508 "d", /* collect_format */
509 value_collect_double, /* collect_value */
510 "p", /* lcopy_format */
511 value_lcopy_double, /* lcopy_value */
513 info.value_table = &value_table;
514 type = g_type_register_fundamental (G_TYPE_DOUBLE, g_intern_static_string ("gdouble"), &info, &finfo, 0);
515 g_assert (type == G_TYPE_DOUBLE);
521 static const GTypeValueTable value_table = {
522 value_init_string, /* value_init */
523 value_free_string, /* value_free */
524 value_copy_string, /* value_copy */
525 value_peek_pointer0, /* value_peek_pointer */
526 "p", /* collect_format */
527 value_collect_string, /* collect_value */
528 "p", /* lcopy_format */
529 value_lcopy_string, /* lcopy_value */
531 info.value_table = &value_table;
532 type = g_type_register_fundamental (G_TYPE_STRING, g_intern_static_string ("gchararray"), &info, &finfo, 0);
533 g_assert (type == G_TYPE_STRING);
539 static const GTypeValueTable value_table = {
540 value_init_pointer, /* value_init */
541 NULL, /* value_free */
542 value_copy_pointer, /* value_copy */
543 value_peek_pointer0, /* value_peek_pointer */
544 "p", /* collect_format */
545 value_collect_pointer, /* collect_value */
546 "p", /* lcopy_format */
547 value_lcopy_pointer, /* lcopy_value */
549 info.value_table = &value_table;
550 type = g_type_register_fundamental (G_TYPE_POINTER, g_intern_static_string ("gpointer"), &info, &finfo, 0);
551 g_assert (type == G_TYPE_POINTER);
556 /* --- GValue functions --- */
559 * @value: a valid #GValue of type %G_TYPE_CHAR
560 * @v_char: character value to be set
562 * Set the contents of a %G_TYPE_CHAR #GValue to @v_char.
565 g_value_set_char (GValue *value,
568 g_return_if_fail (G_VALUE_HOLDS_CHAR (value));
570 value->data[0].v_int = v_char;
575 * @value: a valid #GValue of type %G_TYPE_CHAR
577 * Get the contents of a %G_TYPE_CHAR #GValue.
579 * Returns: character contents of @value
582 g_value_get_char (const GValue *value)
584 g_return_val_if_fail (G_VALUE_HOLDS_CHAR (value), 0);
586 return value->data[0].v_int;
591 * @value: a valid #GValue of type %G_TYPE_UCHAR
592 * @v_uchar: unsigned character value to be set
594 * Set the contents of a %G_TYPE_UCHAR #GValue to @v_uchar.
597 g_value_set_uchar (GValue *value,
600 g_return_if_fail (G_VALUE_HOLDS_UCHAR (value));
602 value->data[0].v_uint = v_uchar;
607 * @value: a valid #GValue of type %G_TYPE_UCHAR
609 * Get the contents of a %G_TYPE_UCHAR #GValue.
611 * Returns: unsigned character contents of @value
614 g_value_get_uchar (const GValue *value)
616 g_return_val_if_fail (G_VALUE_HOLDS_UCHAR (value), 0);
618 return value->data[0].v_uint;
622 * g_value_set_boolean:
623 * @value: a valid #GValue of type %G_TYPE_BOOLEAN
624 * @v_boolean: boolean value to be set
626 * Set the contents of a %G_TYPE_BOOLEAN #GValue to @v_boolean.
629 g_value_set_boolean (GValue *value,
632 g_return_if_fail (G_VALUE_HOLDS_BOOLEAN (value));
634 value->data[0].v_int = v_boolean != FALSE;
638 * g_value_get_boolean:
639 * @value: a valid #GValue of type %G_TYPE_BOOLEAN
641 * Get the contents of a %G_TYPE_BOOLEAN #GValue.
643 * Returns: boolean contents of @value
646 g_value_get_boolean (const GValue *value)
648 g_return_val_if_fail (G_VALUE_HOLDS_BOOLEAN (value), 0);
650 return value->data[0].v_int;
655 * @value: a valid #GValue of type %G_TYPE_INT
656 * @v_int: integer value to be set
658 * Set the contents of a %G_TYPE_INT #GValue to @v_int.
661 g_value_set_int (GValue *value,
664 g_return_if_fail (G_VALUE_HOLDS_INT (value));
666 value->data[0].v_int = v_int;
671 * @value: a valid #GValue of type %G_TYPE_INT
673 * Get the contents of a %G_TYPE_INT #GValue.
675 * Returns: integer contents of @value
678 g_value_get_int (const GValue *value)
680 g_return_val_if_fail (G_VALUE_HOLDS_INT (value), 0);
682 return value->data[0].v_int;
687 * @value: a valid #GValue of type %G_TYPE_UINT
688 * @v_uint: unsigned integer value to be set
690 * Set the contents of a %G_TYPE_UINT #GValue to @v_uint.
693 g_value_set_uint (GValue *value,
696 g_return_if_fail (G_VALUE_HOLDS_UINT (value));
698 value->data[0].v_uint = v_uint;
703 * @value: a valid #GValue of type %G_TYPE_UINT
705 * Get the contents of a %G_TYPE_UINT #GValue.
707 * Returns: unsigned integer contents of @value
710 g_value_get_uint (const GValue *value)
712 g_return_val_if_fail (G_VALUE_HOLDS_UINT (value), 0);
714 return value->data[0].v_uint;
719 * @value: a valid #GValue of type %G_TYPE_LONG
720 * @v_long: long integer value to be set
722 * Set the contents of a %G_TYPE_LONG #GValue to @v_long.
725 g_value_set_long (GValue *value,
728 g_return_if_fail (G_VALUE_HOLDS_LONG (value));
730 value->data[0].v_long = v_long;
735 * @value: a valid #GValue of type %G_TYPE_LONG
737 * Get the contents of a %G_TYPE_LONG #GValue.
739 * Returns: long integer contents of @value
742 g_value_get_long (const GValue *value)
744 g_return_val_if_fail (G_VALUE_HOLDS_LONG (value), 0);
746 return value->data[0].v_long;
751 * @value: a valid #GValue of type %G_TYPE_ULONG
752 * @v_ulong: unsigned long integer value to be set
754 * Set the contents of a %G_TYPE_ULONG #GValue to @v_ulong.
757 g_value_set_ulong (GValue *value,
760 g_return_if_fail (G_VALUE_HOLDS_ULONG (value));
762 value->data[0].v_ulong = v_ulong;
767 * @value: a valid #GValue of type %G_TYPE_ULONG
769 * Get the contents of a %G_TYPE_ULONG #GValue.
771 * Returns: unsigned long integer contents of @value
774 g_value_get_ulong (const GValue *value)
776 g_return_val_if_fail (G_VALUE_HOLDS_ULONG (value), 0);
778 return value->data[0].v_ulong;
783 * @value: a valid #GValue of type %G_TYPE_INT64
785 * Get the contents of a %G_TYPE_INT64 #GValue.
787 * Returns: 64bit integer contents of @value
790 g_value_set_int64 (GValue *value,
793 g_return_if_fail (G_VALUE_HOLDS_INT64 (value));
795 value->data[0].v_int64 = v_int64;
800 * @value: a valid #GValue of type %G_TYPE_INT64
801 * @v_int64: 64bit integer value to be set
803 * Set the contents of a %G_TYPE_INT64 #GValue to @v_int64.
806 g_value_get_int64 (const GValue *value)
808 g_return_val_if_fail (G_VALUE_HOLDS_INT64 (value), 0);
810 return value->data[0].v_int64;
814 * g_value_set_uint64:
815 * @value: a valid #GValue of type %G_TYPE_UINT64
816 * @v_uint64: unsigned 64bit integer value to be set
818 * Set the contents of a %G_TYPE_UINT64 #GValue to @v_uint64.
821 g_value_set_uint64 (GValue *value,
824 g_return_if_fail (G_VALUE_HOLDS_UINT64 (value));
826 value->data[0].v_uint64 = v_uint64;
830 * g_value_get_uint64:
831 * @value: a valid #GValue of type %G_TYPE_UINT64
833 * Get the contents of a %G_TYPE_UINT64 #GValue.
835 * Returns: unsigned 64bit integer contents of @value
838 g_value_get_uint64 (const GValue *value)
840 g_return_val_if_fail (G_VALUE_HOLDS_UINT64 (value), 0);
842 return value->data[0].v_uint64;
847 * @value: a valid #GValue of type %G_TYPE_FLOAT
848 * @v_float: float value to be set
850 * Set the contents of a %G_TYPE_FLOAT #GValue to @v_float.
853 g_value_set_float (GValue *value,
856 g_return_if_fail (G_VALUE_HOLDS_FLOAT (value));
858 value->data[0].v_float = v_float;
863 * @value: a valid #GValue of type %G_TYPE_FLOAT
865 * Get the contents of a %G_TYPE_FLOAT #GValue.
867 * Returns: float contents of @value
870 g_value_get_float (const GValue *value)
872 g_return_val_if_fail (G_VALUE_HOLDS_FLOAT (value), 0);
874 return value->data[0].v_float;
878 * g_value_set_double:
879 * @value: a valid #GValue of type %G_TYPE_DOUBLE
880 * @v_double: double value to be set
882 * Set the contents of a %G_TYPE_DOUBLE #GValue to @v_double.
885 g_value_set_double (GValue *value,
888 g_return_if_fail (G_VALUE_HOLDS_DOUBLE (value));
890 value->data[0].v_double = v_double;
894 * g_value_get_double:
895 * @value: a valid #GValue of type %G_TYPE_DOUBLE
897 * Get the contents of a %G_TYPE_DOUBLE #GValue.
899 * Returns: double contents of @value
902 g_value_get_double (const GValue *value)
904 g_return_val_if_fail (G_VALUE_HOLDS_DOUBLE (value), 0);
906 return value->data[0].v_double;
910 * g_value_set_string:
911 * @value: a valid #GValue of type %G_TYPE_STRING
912 * @v_string: string to be set
914 * Set the contents of a %G_TYPE_STRING #GValue to @v_string.
917 g_value_set_string (GValue *value,
918 const gchar *v_string)
922 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
924 new_val = g_strdup (v_string);
926 if (value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS)
927 value->data[1].v_uint = 0;
929 g_free (value->data[0].v_pointer);
931 value->data[0].v_pointer = new_val;
935 * g_value_set_static_string:
936 * @value: a valid #GValue of type %G_TYPE_STRING
937 * @v_string: static string to be set
939 * Set the contents of a %G_TYPE_STRING #GValue to @v_string.
940 * The string is assumed to be static, and is thus not duplicated
941 * when setting the #GValue.
944 g_value_set_static_string (GValue *value,
945 const gchar *v_string)
947 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
949 if (!(value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS))
950 g_free (value->data[0].v_pointer);
951 value->data[1].v_uint = G_VALUE_NOCOPY_CONTENTS;
952 value->data[0].v_pointer = (gchar*) v_string;
956 * g_value_set_string_take_ownership:
957 * @value: a valid #GValue of type %G_TYPE_STRING
958 * @v_string: duplicated unowned string to be set
960 * This is an internal function introduced mainly for C marshallers.
962 * Deprecated: 2.4: Use g_value_take_string() instead.
965 g_value_set_string_take_ownership (GValue *value,
968 g_value_take_string (value, v_string);
972 * g_value_take_string:
973 * @value: a valid #GValue of type %G_TYPE_STRING
974 * @v_string: duplicated unowned string to be set
976 * Sets the contents of a %G_TYPE_STRING #GValue to @v_string.
981 g_value_take_string (GValue *value,
984 g_return_if_fail (G_VALUE_HOLDS_STRING (value));
986 if (value->data[1].v_uint & G_VALUE_NOCOPY_CONTENTS)
987 value->data[1].v_uint = 0;
989 g_free (value->data[0].v_pointer);
990 value->data[0].v_pointer = v_string;
994 * g_value_get_string:
995 * @value: a valid #GValue of type %G_TYPE_STRING
997 * Get the contents of a %G_TYPE_STRING #GValue.
999 * Returns: string content of @value
1001 G_CONST_RETURN gchar*
1002 g_value_get_string (const GValue *value)
1004 g_return_val_if_fail (G_VALUE_HOLDS_STRING (value), NULL);
1006 return value->data[0].v_pointer;
1010 * g_value_dup_string:
1011 * @value: a valid #GValue of type %G_TYPE_STRING
1013 * Get a copy the contents of a %G_TYPE_STRING #GValue.
1015 * Returns: a newly allocated copy of the string content of @value
1018 g_value_dup_string (const GValue *value)
1020 g_return_val_if_fail (G_VALUE_HOLDS_STRING (value), NULL);
1022 return g_strdup (value->data[0].v_pointer);
1026 * g_value_set_pointer:
1027 * @value: a valid #GValue of %G_TYPE_POINTER
1028 * @v_pointer: pointer value to be set
1030 * Set the contents of a pointer #GValue to @v_pointer.
1033 g_value_set_pointer (GValue *value,
1036 g_return_if_fail (G_VALUE_HOLDS_POINTER (value));
1038 value->data[0].v_pointer = v_pointer;
1042 * g_value_get_pointer:
1043 * @value: a valid #GValue of %G_TYPE_POINTER
1045 * Get the contents of a pointer #GValue.
1047 * Returns: pointer contents of @value
1050 g_value_get_pointer (const GValue *value)
1052 g_return_val_if_fail (G_VALUE_HOLDS_POINTER (value), NULL);
1054 return value->data[0].v_pointer;
1058 g_gtype_get_type (void)
1060 static const GTypeInfo type_info = { 0, };
1063 type = g_type_register_static (G_TYPE_POINTER, g_intern_static_string ("GType"), &type_info, 0);
1068 * g_value_set_gtype:
1069 * @value: a valid #GValue of type %G_TYPE_GTYPE
1070 * @v_gtype: #GType to be set
1072 * Set the contents of a %G_TYPE_GTYPE #GValue to @v_gtype.
1077 g_value_set_gtype (GValue *value,
1080 g_return_if_fail (G_VALUE_HOLDS_GTYPE (value));
1082 value->data[0].v_long = v_gtype;
1087 * g_value_get_gtype:
1088 * @value: a valid #GValue of type %G_TYPE_GTYPE
1090 * Get the contents of a %G_TYPE_GTYPE #GValue.
1093 * Returns: the #GType stored in @value
1096 g_value_get_gtype (const GValue *value)
1098 g_return_val_if_fail (G_VALUE_HOLDS_GTYPE (value), 0);
1100 return value->data[0].v_long;
1104 * g_strdup_value_contents:
1105 * @value: #GValue which contents are to be described.
1107 * Return a newly allocated string, which describes the contents of a #GValue.
1108 * The main purpose of this function is to describe #GValue contents for
1109 * debugging output, the way in which the contents are described may change
1110 * between different GLib versions.
1112 * Returns: Newly allocated string.
1115 g_strdup_value_contents (const GValue *value)
1120 g_return_val_if_fail (G_IS_VALUE (value), NULL);
1122 if (G_VALUE_HOLDS_STRING (value))
1124 src = g_value_get_string (value);
1127 contents = g_strdup ("NULL");
1130 gchar *s = g_strescape (src, NULL);
1132 contents = g_strdup_printf ("\"%s\"", s);
1136 else if (g_value_type_transformable (G_VALUE_TYPE (value), G_TYPE_STRING))
1138 GValue tmp_value = { 0, };
1141 g_value_init (&tmp_value, G_TYPE_STRING);
1142 g_value_transform (value, &tmp_value);
1143 s = g_strescape (g_value_get_string (&tmp_value), NULL);
1144 g_value_unset (&tmp_value);
1145 if (G_VALUE_HOLDS_ENUM (value) || G_VALUE_HOLDS_FLAGS (value))
1146 contents = g_strdup_printf ("((%s) %s)",
1147 g_type_name (G_VALUE_TYPE (value)),
1150 contents = g_strdup (s ? s : "NULL");
1153 else if (g_value_fits_pointer (value))
1155 gpointer p = g_value_peek_pointer (value);
1158 contents = g_strdup ("NULL");
1159 else if (G_VALUE_HOLDS_OBJECT (value))
1160 contents = g_strdup_printf ("((%s*) %p)", G_OBJECT_TYPE_NAME (p), p);
1161 else if (G_VALUE_HOLDS_PARAM (value))
1162 contents = g_strdup_printf ("((%s*) %p)", G_PARAM_SPEC_TYPE_NAME (p), p);
1163 else if (G_VALUE_HOLDS_BOXED (value))
1164 contents = g_strdup_printf ("((%s*) %p)", g_type_name (G_VALUE_TYPE (value)), p);
1165 else if (G_VALUE_HOLDS_POINTER (value))
1166 contents = g_strdup_printf ("((gpointer) %p)", p);
1168 contents = g_strdup ("???");
1171 contents = g_strdup ("???");
1177 * g_pointer_type_register_static:
1178 * @name: the name of the new pointer type.
1180 * Creates a new %G_TYPE_POINTER derived type id for a new
1181 * pointer type with name @name.
1183 * Returns: a new %G_TYPE_POINTER derived type id for @name.
1186 g_pointer_type_register_static (const gchar *name)
1188 static const GTypeInfo type_info = {
1190 NULL, /* base_init */
1191 NULL, /* base_finalize */
1192 NULL, /* class_init */
1193 NULL, /* class_finalize */
1194 NULL, /* class_data */
1195 0, /* instance_size */
1196 0, /* n_preallocs */
1197 NULL, /* instance_init */
1198 NULL /* value_table */
1202 g_return_val_if_fail (name != NULL, 0);
1203 g_return_val_if_fail (g_type_from_name (name) == 0, 0);
1205 type = g_type_register_static (G_TYPE_POINTER, name, &type_info, 0);
1210 #define __G_VALUETYPES_C__
1211 #include "gobjectaliasdef.c"