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gambas-source-code/main/gbx/gbx_value.h
Benoît Minisini c9ca5ab982 [CONFIGURATION] 
* NEW: Update copyright year to 2013.

[GB.FORM]
* NEW: ImageView is a new control that allows to view an image inside a 
  scrolled view, at different zoom levels.
* BUG: FileProperties now works correctly if 'gb.desktop' is not used.
* NEW: The FileProperties preview tab now uses an ImageView control and has
  a toolbar to zoom the preview.
* BUG: Add the 'linux' and 'gnu' icon in the stock icon list.


git-svn-id: svn://localhost/gambas/trunk@5770 867c0c6c-44f3-4631-809d-bfa615b0a4ec
2013-08-03 15:38:01 +00:00

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/***************************************************************************
gbx_value.h
(c) 2000-2013 Benoît Minisini <gambas@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
***************************************************************************/
#ifndef __GBX_VALUE_H
#define __GBX_VALUE_H
#include <time.h>
#include "gbx_type.h"
#include "gbx_class.h"
#ifndef __DATE_DECLARED
#define __DATE_DECLARED
typedef
struct {
int date;
int time;
}
DATE;
#endif
typedef
struct {
TYPE type;
int value;
}
VALUE_BOOLEAN;
typedef
struct {
TYPE type;
int value;
}
VALUE_BYTE;
typedef
struct {
TYPE type;
int value;
}
VALUE_SHORT;
typedef
struct {
TYPE type;
int value;
}
VALUE_INTEGER;
typedef
struct {
TYPE type;
#ifndef OS_64BITS
int _padding;
#endif
int64_t value;
}
PACKED
VALUE_LONG;
typedef
struct {
TYPE type;
char *value;
}
PACKED
VALUE_POINTER;
typedef
struct {
TYPE type;
float value;
}
PACKED
VALUE_SINGLE;
typedef
struct {
TYPE type;
#ifndef OS_64BITS
int _padding;
#endif
double value;
}
PACKED
VALUE_FLOAT;
typedef
struct {
TYPE type;
int date; /* number of days */
int time; /* number of milliseconds */
}
VALUE_DATE;
typedef
struct {
TYPE type;
char *addr;
int start;
int len;
}
VALUE_STRING;
typedef
struct {
TYPE type;
CLASS *class;
void *object;
char kind;
char defined;
short index;
}
PACKED
VALUE_FUNCTION;
enum
{
FUNCTION_NULL = 0,
FUNCTION_NATIVE = 1,
FUNCTION_PRIVATE = 2,
FUNCTION_PUBLIC = 3,
FUNCTION_EVENT = 4,
FUNCTION_EXTERN = 5,
FUNCTION_UNKNOWN = 6,
FUNCTION_CALL = 7,
FUNCTION_SUBR = 8
};
typedef
struct {
TYPE type;
TYPE ptype;
intptr_t value[2];
}
VALUE_VOID;
typedef
struct {
TYPE type;
TYPE vtype;
union {
char _boolean;
unsigned char _byte;
short _short;
int _integer;
int64_t _long;
float _single;
double _float;
DATE _date;
char *_string;
void *_pointer;
void *_object;
int64_t data;
}
value;
}
VALUE_VARIANT;
typedef
struct {
CLASS *class;
void *object;
void *super;
}
VALUE_OBJECT;
typedef
struct {
TYPE type;
CLASS *class;
void *super;
}
VALUE_CLASS;
typedef
union value {
TYPE type;
VALUE_BOOLEAN _boolean;
VALUE_BYTE _byte;
VALUE_SHORT _short;
VALUE_INTEGER _integer;
VALUE_LONG _long;
VALUE_SINGLE _single;
VALUE_FLOAT _float;
VALUE_DATE _date;
VALUE_STRING _string;
VALUE_POINTER _pointer;
VALUE_FUNCTION _function;
VALUE_VARIANT _variant;
VALUE_CLASS _class;
VALUE_OBJECT _object;
VALUE_VOID _void;
}
VALUE;
typedef
void (*VALUE_CONVERT_FUNC)(VALUE *);
#define VALUE_copy(_dst, _src) \
((_dst)->_void.type = (_src)->_void.type, \
(_dst)->_void.ptype = (_src)->_void.ptype, \
(_dst)->_void.value[0] = (_src)->_void.value[0], \
(_dst)->_void.value[1] = (_src)->_void.value[1])
#define VALUE_is_equal(_v1, _v2) (*_v1 == *v2)
#define VALUE_is_object(val) (TYPE_is_object((val)->type))
#define VALUE_is_string(val) ((val)->type == T_STRING || (val)->type == T_CSTRING)
#define VALUE_is_number(val) ((val)->type >= T_BYTE && (val)->type <= T_FLOAT)
void VALUE_default(VALUE *value, TYPE type);
void VALUE_convert(VALUE *value, TYPE type);
void VALUE_convert_boolean(VALUE *value);
void VALUE_convert_integer(VALUE *value);
void VALUE_convert_float(VALUE *value);
void VALUE_convert_string(VALUE *value);
void VALUE_convert_variant(VALUE *value);
void VALUE_read(VALUE *value, void *addr, TYPE type);
void VALUE_write(VALUE *value, void *addr, TYPE type);
void VALUE_undo_variant(VALUE *value);
//void VALUE_put(VALUE *value, void *addr, TYPE type);
void VALUE_free(void *addr, TYPE type);
void VALUE_to_string(VALUE *value, char **addr, int *len);
void VALUE_from_string(VALUE *value, const char *addr, int len);
void VALUE_class_read(CLASS *class, VALUE *value, char *addr, CTYPE ctype, void *ref);
void VALUE_class_write(CLASS *class, VALUE *value, char *addr, CTYPE ctype);
void VALUE_class_constant(CLASS *class, VALUE *value, int ind);
bool VALUE_is_null(VALUE *val);
//void VALUE_get_string(VALUE *val, char **text, int *length);
#define VALUE_get_string(_value, _ptext, _plen) \
({ \
*(_plen) = (_value)->_string.len; \
if (*(_plen)) \
*(_ptext) = (_value)->_string.start + (_value)->_string.addr; \
else \
*(_ptext) = NULL; \
})
void THROW_TYPE_INTEGER(TYPE type) NORETURN;
void THROW_TYPE_FLOAT(TYPE type) NORETURN;
void THROW_TYPE_STRING(TYPE type) NORETURN;
#define VALUE_conv(_value, _type) \
({ \
if (UNLIKELY((_value)->type != (_type))) \
VALUE_convert(_value, _type); \
})
#if 0
#define VALUE_conv_boolean(_value) \
({ \
VALUE *v = _value; \
if (UNLIKELY(v->type != T_BOOLEAN)) \
{ \
VALUE_convert_boolean(v); \
} \
})
#define VALUE_conv_integer(_value) \
({ \
VALUE *v = _value; \
if (UNLIKELY(v->type != T_INTEGER)) \
{ \
if (TYPE_is_object(v->type)) \
THROW_TYPE_INTEGER(v->type); \
VALUE_convert_integer(v); \
} \
})
#define VALUE_conv_float(_value) \
({ \
VALUE *v = _value; \
if (UNLIKELY(v->type != T_FLOAT)) \
{ \
if (TYPE_is_object(v->type)) \
THROW_TYPE_FLOAT(v->type); \
VALUE_convert_float(v); \
} \
})
#define VALUE_conv_string(_value) \
({ \
VALUE *v = _value; \
if (UNLIKELY(v->type != T_STRING && v->type != T_CSTRING)) \
{ \
if (TYPE_is_object(v->type)) \
THROW_TYPE_STRING(v->type); \
VALUE_convert_string(v); \
} \
})
#define VALUE_conv_variant(_value) \
({ \
if (UNLIKELY((_value)->type != T_VARIANT)) \
VALUE_convert_variant(_value); \
})
#define VALUE_conv_object(_value, _type) \
({ \
if (UNLIKELY((_value)->type != (_type))) \
VALUE_convert_object(_value, _type); \
})
#else
#define VALUE_conv_boolean(_value) \
({ \
if (UNLIKELY((_value)->type != T_BOOLEAN)) \
VALUE_convert_boolean(_value); \
})
#define VALUE_conv_float(_value) \
({ \
if (UNLIKELY((_value)->type != T_FLOAT)) \
VALUE_convert_float(_value); \
})
//#define VALUE_conv_boolean(_value) VALUE_conv(_value, T_BOOLEAN)
#define VALUE_conv_integer(_value) VALUE_conv(_value, T_INTEGER)
//#define VALUE_conv_float(_value) VALUE_conv(_value, T_FLOAT)
#define VALUE_conv_variant(_value) VALUE_conv(_value, T_VARIANT)
#define VALUE_conv_object(_value, _type) VALUE_conv(_value, _type)
#define VALUE_conv_string(_value) \
({ \
if (UNLIKELY((_value)->type != T_STRING && (_value)->type != T_CSTRING)) \
VALUE_conv(_value, T_STRING); \
})
#endif
#define VALUE_is_super(_value) (EXEC_super && EXEC_super == (_value)->_object.super)
#define VALUE_class_read_inline(_class, _value, _addr, _ctype, _ref) \
({ \
static void *jump[17] = { \
&&__VOID, &&__BOOLEAN, &&__BYTE, &&__SHORT, &&__INTEGER, &&__LONG, &&__SINGLE, &&__FLOAT, &&__DATE, \
&&__STRING, &&__CSTRING, &&__POINTER, &&__VARIANT, &&__ARRAY, &&__STRUCT, &&__NULL, &&__OBJECT \
}; \
\
for(;;) \
{ \
(_value)->type = (_ctype).id; \
goto *jump[(_ctype).id]; \
\
__BOOLEAN: \
(_value)->_boolean.value = -(*((unsigned char *)(_addr)) != 0); \
break; \
\
__BYTE: \
(_value)->_byte.value = *((unsigned char *)(_addr)); \
break; \
\
__SHORT: \
(_value)->_short.value = *((short *)(_addr)); \
break; \
\
__INTEGER: \
(_value)->_integer.value = *((int *)(_addr)); \
break; \
\
__LONG: \
(_value)->_long.value = *((int64_t *)(_addr)); \
break; \
\
__SINGLE: \
(_value)->_single.value = *((float *)(_addr)); \
break; \
\
__FLOAT: \
(_value)->_float.value = *((double *)(_addr)); \
break; \
\
__DATE: \
(_value)->_date.date = ((int *)(_addr))[0]; \
(_value)->_date.time = ((int *)(_addr))[1]; \
break; \
\
__STRING: \
{ \
char *str = *((char **)(_addr)); \
\
(_value)->type = T_STRING; \
(_value)->_string.addr = str; \
(_value)->_string.start = 0; \
(_value)->_string.len = STRING_length(str); \
\
break; \
} \
\
__CSTRING: \
{ \
char *str = *((char **)(_addr)); \
\
(_value)->type = T_CSTRING; \
(_value)->_string.addr = str; \
(_value)->_string.start = 0; \
(_value)->_string.len = (str == NULL) ? 0 : strlen(str); \
\
break; \
} \
\
__OBJECT: \
(_value)->_object.object = *((void **)(_addr)); \
(_value)->type = ((_ctype).value >= 0) ? (TYPE)(_class)->load->class_ref[(_ctype).value] : T_OBJECT; \
break; \
\
__POINTER: \
(_value)->_pointer.value = *((void **)(_addr)); \
break; \
\
__VARIANT: \
(_value)->_variant.type = T_VARIANT; \
(_value)->_variant.vtype = ((VARIANT *)(_addr))->type; \
if ((_value)->_variant.vtype == T_VOID) \
(_value)->_variant.vtype = T_NULL; \
VARIANT_copy_value(&(_value)->_variant, ((VARIANT *)(_addr))); \
break; \
\
__ARRAY: \
{ \
void *object = CARRAY_create_static((_class), (_ref), (_class)->load->array[(_ctype).value], (_addr)); \
(_value)->_object.class = OBJECT_class(object); \
(_value)->_object.object = object; \
break; \
} \
\
__STRUCT: \
{ \
void *object = CSTRUCT_create_static((_ref), (_class)->load->class_ref[(_ctype).value], (_addr)); \
(_value)->_object.class = OBJECT_class(object); \
(_value)->_object.object = object; \
break; \
} \
\
__VOID: \
__NULL: \
THROW_ILLEGAL(); \
} \
})
#define VALUE_class_constant_inline(_class, _value, _ind) \
({ \
static void *jump[] = \
{ \
&&__ILLEGAL, &&__INTEGER, &&__INTEGER, &&__INTEGER, &&__INTEGER, &&__LONG, &&__SINGLE, &&__FLOAT, \
&&__ILLEGAL, &&__STRING, &&__CSTRING, &&__POINTER, &&__ILLEGAL, &&__ILLEGAL, &&__ILLEGAL, &&__ILLEGAL \
}; \
\
CLASS_CONST *cc; \
\
for(;;) \
{ \
cc = &(_class)->load->cst[_ind]; \
goto *jump[cc->type]; \
\
__INTEGER: \
\
(_value)->type = T_INTEGER; \
(_value)->_integer.value = cc->_integer.value; \
break; \
\
__LONG: \
\
(_value)->type = T_LONG; \
(_value)->_long.value = cc->_long.value; \
break; \
\
__SINGLE: \
\
(_value)->type = T_SINGLE; \
(_value)->_single.value = cc->_single.value; \
break; \
\
__FLOAT: \
\
(_value)->type = T_FLOAT; \
(_value)->_float.value = cc->_float.value; \
break; \
\
__STRING: \
\
(_value)->type = T_CSTRING; \
(_value)->_string.addr = (char *)cc->_string.addr; \
(_value)->_string.start = 0; \
(_value)->_string.len = cc->_string.len; \
break; \
\
__CSTRING: \
\
(_value)->type = T_CSTRING; \
(_value)->_string.addr = (char *)LOCAL_gettext(cc->_string.addr); \
(_value)->_string.start = 0; \
(_value)->_string.len = strlen((_value)->_string.addr); \
break; \
\
__POINTER: \
\
(_value)->type = T_POINTER; \
(_value)->_pointer.value = NULL; \
break; \
\
__ILLEGAL: \
\
THROW_ILLEGAL(); \
} \
})
#endif
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