gambas-source-code/main/gbx/gbx_subr_extern.c
Benoît Minisini 1f592094a6 [CONFIGURATION]
* NEW: Bytecode version has been increased, and so all projects must be 
  recompiled.

[INTERPRETER]
* OPT: Objects that do not raise events do not allocate the event 
  management structure anymore. That save four pointers by object.
* NEW: Structure management is done, and embedded (static) structures are
  handled too.
* BUG: Static array management was fixed.
* NEW: All functions synonymous whose name ends with a question mark have 
  been removed.

[COMPILER]
* OPT: Some optimization again.
* BUG: EXTERN declarations compile again.

[GB.DB.SQLITE2]
* BUG: Fix a misuse of GB.NewString().


git-svn-id: svn://localhost/gambas/trunk@2970 867c0c6c-44f3-4631-809d-bfa615b0a4ec
2010-05-26 22:01:28 +00:00

213 lines
3.7 KiB
C

/***************************************************************************
gbx_subr_extern.c
(c) 2000-2009 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., 675 Mass Ave, Cambridge, MA 02139, USA.
***************************************************************************/
#include <sys/wait.h>
#include "gb_common.h"
#include "gb_alloc.h"
#include "gb_common_check.h"
#include "gb_pcode.h"
#include "gbx_subr.h"
void SUBR_alloc(void)
{
int size;
int count;
void *ptr;
char *copy;
SUBR_ENTER();
if (NPARAM == 2)
count = SUBR_get_integer(&PARAM[1]);
else
count = 1;
if (TYPE_is_null(PARAM->type))
{
size = 1;
copy = NULL;
}
if (TYPE_is_string(PARAM->type))
{
size = PARAM->_string.len + 1;
copy = PARAM->_string.addr + PARAM->_string.start;
}
else
{
size = SUBR_get_integer(PARAM);
copy = NULL;
}
if (count <= 0 || size <= 0)
THROW(E_ARG);
ALLOC(&ptr, size * count, "SUBR_alloc");
if (copy)
{
size--;
memcpy(ptr, copy, size);
((char *)ptr)[size] = 0;
}
RETURN->type = T_POINTER;
RETURN->_pointer.value = ptr;
SUBR_LEAVE();
}
void SUBR_free(void)
{
void *ptr;
SUBR_ENTER_PARAM(1);
ptr = SUBR_get_pointer(PARAM);
FREE(&ptr, "SUBR_free");
SUBR_LEAVE_VOID();
}
void SUBR_realloc(void)
{
int size;
int count;
void *ptr;
SUBR_ENTER();
if (NPARAM == 3)
size = SUBR_get_integer(&PARAM[2]);
else
size = 1;
count = SUBR_get_integer(&PARAM[1]);
if (size <= 0 || count <= 0)
THROW(E_ARG);
ptr = SUBR_get_pointer(&PARAM[0]);
REALLOC(&ptr, size * count, "SUBR_realloc");
RETURN->type = T_POINTER;
RETURN->_pointer.value = ptr;
SUBR_LEAVE();
}
void SUBR_strptr(void)
{
char *ptr;
size_t len = 0;
SUBR_ENTER_PARAM(1);
ptr = (char *)SUBR_get_pointer(PARAM);
if (CHECK_strlen(ptr, &len))
{
RETURN->type = T_NULL;
}
else
{
RETURN->type = T_CSTRING;
RETURN->_string.addr = ptr;
RETURN->_string.start = 0;
RETURN->_string.len = (int)len;
}
SUBR_LEAVE();
}
void SUBR_varptr(void)
{
ushort op;
void *ptr;
VALUE *val;
CLASS_VAR *var;
SUBR_ENTER_PARAM(1);
op = (ushort)SUBR_get_integer(PARAM);
if ((op & 0xFF00) == C_PUSH_LOCAL)
{
val = &BP[op & 0xFF];
switch(val->type)
{
case T_BOOLEAN:
case T_BYTE:
case T_SHORT:
case T_INTEGER:
ptr = &val->_integer.value;
break;
case T_LONG:
ptr = &val->_long.value;
break;
case T_SINGLE:
case T_FLOAT:
ptr = &val->_float.value;
break;
case T_STRING:
case T_CSTRING:
ptr = val->_string.addr + val->_string.start;
break;
default:
THROW(E_TYPE, "Number", TYPE_get_name(val->type));
}
}
else if ((op & 0xF800) == C_PUSH_DYNAMIC)
{
var = &CP->load->dyn[op & 0x7FF];
if (OP == NULL)
THROW_ILLEGAL();
ptr = &OP[var->pos];
}
else if ((op & 0xF800) == C_PUSH_STATIC)
{
var = &CP->load->stat[op & 0x7FF];
ptr = (char *)CP->stat + var->pos;
}
else
THROW_ILLEGAL();
RETURN->type = T_POINTER;
RETURN->_pointer.value = ptr;
SUBR_LEAVE();
}