pike.git / src / opcodes.c

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pike.git/src/opcodes.c:1:   /*   || This file is part of Pike. For copyright information see COPYRIGHT.   || Pike is distributed under GPL, LGPL and MPL. See the file COPYING   || for more information. - || $Id: opcodes.c,v 1.130 2003/08/26 17:36:33 grubba Exp $ + || $Id: opcodes.c,v 1.131 2004/09/20 12:11:25 mast Exp $   */      #include "global.h"   #include <errno.h>   #include <math.h>   #include <ctype.h>   #include "interpret.h"   #include "svalue.h"   #include "array.h"   #include "stralloc.h"
pike.git/src/opcodes.c:23:   #include "fd_control.h"   #include "cyclic.h"   #include "builtin_functions.h"   #include "module_support.h"   #include "security.h"   #include "bignum.h"   #include "operators.h"      #define sp Pike_sp    - RCSID("$Id: opcodes.c,v 1.130 2003/08/26 17:36:33 grubba Exp $"); + RCSID("$Id: opcodes.c,v 1.131 2004/09/20 12:11:25 mast Exp $");      void index_no_free(struct svalue *to,struct svalue *what,struct svalue *ind)   {    INT32 i;      #ifdef PIKE_SECURITY    if(what->type <= MAX_COMPLEX)    if(!CHECK_DATA_SECURITY(what->u.array, SECURITY_BIT_INDEX))    Pike_error("Index permission denied.\n");   #endif
pike.git/src/opcodes.c:140:    dmalloc_touch_svalue(sp);    sp++;   }      /* Special case for casting to int. */   void o_cast_to_int(void)   {    switch(sp[-1].type)    {    case T_OBJECT: -  { +  if(!sp[-1].u.object->prog) { +  /* Casting a destructed object should be like casting a zero. */ +  pop_stack(); +  push_int (0); +  } +  +  else {    struct pike_string *s;    MAKE_CONSTANT_SHARED_STRING(s, "int");    push_string(s); -  if(!sp[-2].u.object->prog) -  Pike_error("Cast called on destructed object.\n"); +     if(FIND_LFUN(sp[-2].u.object->prog,LFUN_CAST) == -1)    Pike_error("No cast method in object.\n");    apply_lfun(sp[-2].u.object, LFUN_CAST, 1);    free_svalue(sp-2); -  sp[-2]=sp[-1]; +  move_svalue (sp - 2, sp - 1);    sp--; -  dmalloc_touch_svalue(sp); -  } +     if(sp[-1].type != PIKE_T_INT)    {    if(sp[-1].type == T_OBJECT && sp[-1].u.object->prog)    {    int f=FIND_LFUN(sp[-1].u.object->prog, LFUN__IS_TYPE);    if( f != -1)    {    struct pike_string *s;    MAKE_CONSTANT_SHARED_STRING(s, "int");    push_string(s);    apply_low(sp[-2].u.object, f, 1);    f=!UNSAFE_IS_ZERO(sp-1);    pop_stack();    if(f) return;    }    }    Pike_error("Cast failed, wanted int, got %s\n",    get_name_of_type(sp[-1].type));    } -  +  } +     break;       case T_FLOAT:    {    int i=DO_NOT_WARN((int)(sp[-1].u.float_number));   #ifdef AUTO_BIGNUM    if((i < 0 ? -i : i) < floor(fabs(sp[-1].u.float_number)))    {    /* Note: This includes the case when i = 0x80000000, i.e.    the absolute value is not computable. */
pike.git/src/opcodes.c:250:      void o_cast_to_string(void)   {    char buf[200];    switch(sp[-1].type)    {    case PIKE_T_STRING:    return;       case T_OBJECT: -  { +  if(!sp[-1].u.object->prog) { +  /* Casting a destructed object should be like casting a zero. */ +  pop_stack(); +  push_int (0); +  } +  +  else {    struct pike_string *s;    MAKE_CONSTANT_SHARED_STRING(s, "string");    push_string(s); -  if(!sp[-2].u.object->prog) -  Pike_error("Cast called on destructed object.\n"); +     if(FIND_LFUN(sp[-2].u.object->prog,LFUN_CAST) == -1)    Pike_error("No cast method in object.\n");    apply_lfun(sp[-2].u.object, LFUN_CAST, 1);    free_svalue(sp-2);    sp[-2]=sp[-1];    sp--;    dmalloc_touch_svalue(sp); -  } +     if(sp[-1].type != PIKE_T_STRING)    {    if(sp[-1].type == T_OBJECT && sp[-1].u.object->prog)    {    int f=FIND_LFUN(sp[-1].u.object->prog, LFUN__IS_TYPE);    if( f != -1)    {    struct pike_string *s;    MAKE_CONSTANT_SHARED_STRING(s, "string");    push_string(s);    apply_low(sp[-2].u.object, f, 1);    f=!UNSAFE_IS_ZERO(sp-1);    pop_stack();    if(f) return;    }    }    Pike_error("Cast failed, wanted string, got %s\n",    get_name_of_type(sp[-1].type));    }    return; -  +  }    -  +  /* Fall through. */ +  +  case T_INT: +  sprintf(buf, "%ld", (long)sp[-1].u.integer); +  break; +     case T_ARRAY:    {    int i;    struct array *a = sp[-1].u.array;    struct pike_string *s;    int shift = 0;       for(i = a->size; i--; ) {    unsigned INT32 val;    if (a->item[i].type != T_INT) {
pike.git/src/opcodes.c:357:    free_string(end_shared_string(s));    Pike_fatal("cast: Bad shift: %d.\n", shift);    break;    }    s = end_shared_string(s);    pop_stack();    push_string(s);    }    return;    -  case T_INT: -  sprintf(buf, "%ld", (long)sp[-1].u.integer); -  break; -  +     case T_FLOAT:    sprintf(buf, "%f", (double)sp[-1].u.float_number);    break;       default:    Pike_error("Cannot cast %s to string.\n", get_name_of_type(sp[-1].type));    }       sp[-1].type = PIKE_T_STRING;    sp[-1].u.string = make_shared_string(buf);   }      void o_cast(struct pike_type *type, INT32 run_time_type)   {    if(run_time_type != sp[-1].type)    {    if(run_time_type == T_MIXED)    return;    -  +  if (sp[-1].type == T_OBJECT && !sp[-1].u.object->prog) { +  /* Casting a destructed object should be like casting a zero. */ +  pop_stack(); +  push_int (0); +  } +     if(sp[-1].type == T_OBJECT)    {    struct pike_string *s;    s=describe_type(type);    push_string(s); -  if(!sp[-2].u.object->prog) -  Pike_error("Cast called on destructed object.\n"); +     if(FIND_LFUN(sp[-2].u.object->prog,LFUN_CAST) == -1)    Pike_error("No cast method in object.\n");    apply_lfun(sp[-2].u.object, LFUN_CAST, 1);    free_svalue(sp-2);    sp[-2]=sp[-1];    sp--;    dmalloc_touch_svalue(sp);    }else       switch(run_time_type)