99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/***************************************************************************
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gbx_variant.h
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(c) 2000-2017 Benoît Minisini <benoit.minisini@gambas-basic.org>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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***************************************************************************/
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#ifndef __VARIANT_H
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#define __VARIANT_H
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#include "gbx_type.h"
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#include "gbx_string.h"
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#include "gbx_object.h"
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// On ARM 32 bits, sizeof(VARIANT) = 12, so it must be packed like GB_VARIANT
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typedef
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struct
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{
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TYPE type;
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union {
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char _boolean;
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unsigned char _byte;
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short _short;
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int _integer;
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int64_t _long;
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float _single;
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double _float;
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GB_DATE_VALUE _date;
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char *_string;
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void *_object;
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void *_pointer;
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int64_t data;
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}
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value;
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}
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PACKED
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VARIANT;
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#define VARIANT_copy_value(_dst, _src) (_dst)->value.data = (_src)->value.data
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#define VARIANT_undo(_value) \
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({ \
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if ((_value)->type == T_VARIANT) \
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VALUE_undo_variant(_value); \
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})
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#define VARIANT_free(_var) \
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({ \
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if ((_var)->type == T_STRING) \
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{ \
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STRING_unref(&(_var)->value._string); \
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} \
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else if (TYPE_is_object((_var)->type)) \
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{ \
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OBJECT_UNREF((_var)->value._object); \
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} \
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})
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#define VARIANT_keep(_var) \
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({ \
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if ((_var)->type == T_STRING) \
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{ \
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STRING_ref((_var)->value._string); \
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} \
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else if (TYPE_is_object((_var)->type)) \
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{ \
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OBJECT_REF_CHECK((_var)->value._object); \
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} \
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})
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#define VARIANT_is_null(_var) \
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(((_var)->type == T_NULL) || ((_var)->type == T_STRING && !(_var)->value._string) || (TYPE_is_object((_var)->type) && !(_var)->value._object))
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#define VARIANT_clear(_var) \
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({ \
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VARIANT_free(_var); \
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(_var)->type = 0; \
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(_var)->value.data = 0; \
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})
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#endif
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