pike.git/src/opcodes.c:ceb27fc0d825d1d28dc842d4c3923857e20f88e0

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1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 /*\ ||| This file a part of Pike, and is copyright by Fredrik Hubinette ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ /**/ #include "global.h" #include <math.h> #include <ctype.h> #include "interpret.h" #include "svalue.h" #include "array.h" #include "stralloc.h" #include "mapping.h" #include "multiset.h" #include "opcodes.h" #include "object.h" #include "error.h" #include "pike_types.h" #include "pike_memory.h" #include "fd_control.h" #include "cyclic.h" #include "builtin_functions.h" #include "module_support.h" #include "security.h" #include "bignum.h" RCSID("$Id: opcodes.c,v 1.62 1999/10/31 22:41:44 grubba 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)) error("Index permission denied.\n"); #endif switch(what->type) { #ifdef AUTO_BIGNUM case T_INT: convert_svalue_to_bignum(what); index_no_free(to, what, ind); if(IS_UNDEFINED(to)) error("Indexing an integer with unknown method.\n"); break; #endif /* AUTO_BIGNUM */ case T_ARRAY: simple_array_index_no_free(to,what->u.array,ind); break; case T_MAPPING: mapping_index_no_free(to,what->u.mapping,ind); break; case T_OBJECT: object_index_no_free(to, what->u.object, ind); break; case T_MULTISET: i=multiset_member(what->u.multiset, ind); to->type=T_INT; to->subtype=i ? NUMBER_UNDEFINED : 0; to->u.integer=i; break; case T_STRING: if(ind->type==T_INT) { i=ind->u.integer; if(i<0) i+=what->u.string->len; if(i<0 || i>=what->u.string->len) { if(what->u.string->len == 0) error("Attempt to index the empty string with %d.\n", i); else error("Index %d is out of string range 0 - %d.\n", i, what->u.string->len-1); } else i=index_shared_string(what->u.string,i); to->type=T_INT; to->subtype=NUMBER_NUMBER; to->u.integer=i; break; }else{ error("Index is not an integer.\n"); } case T_PROGRAM: program_index_no_free(to, what->u.program, ind); break; case T_FUNCTION: { struct program *p = program_from_svalue(what); if (p) { program_index_no_free(to, p, ind); break; } } /* FALL THROUGH */ default: error("Indexing a basic type.\n"); } } void o_index(void) { struct svalue s; index_no_free(&s,sp-2,sp-1); pop_n_elems(2); *sp=s; dmalloc_touch_svalue(sp); sp++; } void o_cast(struct pike_string *type, INT32 run_time_type) { INT32 i; if(run_time_type != sp[-1].type) { if(run_time_type == T_MIXED) return; if(sp[-1].type == T_OBJECT) { struct pike_string *s; s=describe_type(type); push_string(s); if(!sp[-2].u.object->prog) error("Cast called on destructed object.\n"); if(FIND_LFUN(sp[-2].u.object->prog,LFUN_CAST) == -1) 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) { default: error("Cannot perform cast to that type.\n"); case T_MIXED: return; case T_MAPPING: switch(sp[-1].type) { case T_ARRAY: { f_transpose(1); sp--; dmalloc_touch_svalue(sp); push_array_items(sp->u.array); f_mkmapping(2); break; } default: error("Cannot cast %s to mapping.\n",get_name_of_type(sp[-1].type)); } break; case T_ARRAY: switch(sp[-1].type) { case T_MAPPING: { struct array *a=mapping_to_array(sp[-1].u.mapping); pop_stack(); push_array(a); break; } case T_STRING: f_values(1); break; case T_MULTISET: f_indices(1); break; default: error("Cannot cast %s to array.\n",get_name_of_type(sp[-1].type)); } break; case T_INT: switch(sp[-1].type) { case T_FLOAT: i=(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. */ convert_stack_top_to_bignum(); return; /* FIXME: OK to return? Cast tests below indicates we have to do this, at least for now... /Noring */ /* Yes, it is ok to return, it is actually an optimization :) * /Hubbe */ } else #endif /* AUTO_BIGNUM */ { sp[-1].type=T_INT; sp[-1].u.integer=i; } break; case T_STRING: /* This can be here independently of AUTO_BIGNUM. Besides, we really want to reduce the number of number parsers around here. :) /Noring */ #ifdef AUTO_BIGNUM convert_stack_top_string_to_inumber(10); return; /* FIXME: OK to return? Cast tests below indicates we have to do this, at least for now... /Noring */ /* Yes, it is ok to return, it is actually an optimization :) * /Hubbe */ #else i=STRTOL(sp[-1].u.string->str,0,10); free_string(sp[-1].u.string); sp[-1].type=T_INT; sp[-1].u.integer=i; #endif /* AUTO_BIGNUM */ break; default: error("Cannot cast %s to int.\n",get_name_of_type(sp[-1].type)); } break; case T_FLOAT: { FLOAT_TYPE f = 0.0; switch(sp[-1].type) { case T_INT: f=(FLOAT_TYPE)(sp[-1].u.integer); break; case T_STRING: f=STRTOD(sp[-1].u.string->str,0); free_string(sp[-1].u.string); break; default: error("Cannot cast %s to float.\n",get_name_of_type(sp[-1].type)); } sp[-1].type=T_FLOAT; sp[-1].u.float_number=f; break; } case T_STRING: { char buf[200]; switch(sp[-1].type) { 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; 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) { error("cast: Item %d is not an integer.\n", i); } val = (unsigned INT32)a->item[i].u.integer; if (val > 0xff) { shift = 1; if (val > 0xffff) { shift = 2; break; } while(i--) { if (a->item[i].type != T_INT) { error("cast: Item %d is not an integer.\n", i); } val = (unsigned INT32)a->item[i].u.integer; if (val > 0xffff) { shift = 2; break; } } break; } } s = begin_wide_shared_string(a->size, shift); switch(shift) { case 0: for(i = a->size; i--; ) { s->str[i] = a->item[i].u.integer; } break; case 1: { p_wchar1 *str1 = STR1(s); for(i = a->size; i--; ) { str1[i] = a->item[i].u.integer; } } break; case 2: { p_wchar2 *str2 = STR2(s); for(i = a->size; i--; ) { str2[i] = a->item[i].u.integer; } } break; default: free_string(end_shared_string(s)); fatal("cast: Bad shift: %d.\n", shift); break; } s = end_shared_string(s); pop_stack(); push_string(s); return; } break; default: error("Cannot cast %s to string.\n",get_name_of_type(sp[-1].type)); } sp[-1].type=T_STRING; sp[-1].u.string=make_shared_string(buf); break; } case T_OBJECT: switch(sp[-1].type) { case T_STRING: if(fp->pc) { INT32 lineno; push_text(get_line(fp->pc, fp->context.prog, &lineno)); }else{ push_int(0); } APPLY_MASTER("cast_to_object",2); return; case T_FUNCTION: sp[-1].type = T_OBJECT; break; default: error("Cannot cast %s to object.\n",get_name_of_type(sp[-1].type)); } break; case T_PROGRAM: switch(sp[-1].type) { case T_STRING: if(fp->pc) { INT32 lineno; push_text(get_line(fp->pc, fp->context.prog, &lineno)); }else{ push_int(0); } APPLY_MASTER("cast_to_program",2); return; case T_FUNCTION: { struct program *p=program_from_function(sp-1); if(p) { add_ref(p); pop_stack(); push_program(p); }else{ pop_stack(); push_int(0); } } return; default: error("Cannot cast %s to a program.\n",get_name_of_type(sp[-1].type)); } } } if(run_time_type != sp[-1].type) { 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) { push_text(get_name_of_type(run_time_type)); apply_low(sp[-2].u.object, f, 1); f=!IS_ZERO(sp-1); pop_stack(); if(f) goto emulated_type_ok; } } error("Cast failed, wanted %s, got %s\n", get_name_of_type(run_time_type), get_name_of_type(sp[-1].type)); } emulated_type_ok: if (!type) return; switch(run_time_type) { case T_ARRAY: { struct pike_string *itype; INT32 run_time_itype; push_string(itype=index_type(type,0)); run_time_itype=compile_type_to_runtime_type(itype); if(run_time_itype != T_MIXED) { struct array *a; struct array *tmp=sp[-2].u.array; DECLARE_CYCLIC(); if((a=(struct array *)BEGIN_CYCLIC(tmp,0))) { ref_push_array(a); }else{ INT32 e,i; #ifdef PIKE_DEBUG struct svalue *save_sp=sp+1; #endif push_array(a=allocate_array(tmp->size)); SET_CYCLIC_RET(a); for(e=0;e<a->size;e++) { push_svalue(tmp->item+e); o_cast(itype, run_time_itype); array_set_index(a,e,sp-1); pop_stack(); } #ifdef PIKE_DEBUG if(save_sp!=sp) fatal("o_cast left stack droppings.\n"); #endif END_CYCLIC(); } assign_svalue(sp-3,sp-1); pop_stack(); } pop_stack(); } break; case T_MULTISET: { struct pike_string *itype; INT32 run_time_itype; push_string(itype=key_type(type,0)); run_time_itype=compile_type_to_runtime_type(itype); if(run_time_itype != T_MIXED) { struct multiset *m; struct array *tmp=sp[-2].u.multiset->ind; DECLARE_CYCLIC(); if((m=(struct multiset *)BEGIN_CYCLIC(tmp,0))) { ref_push_multiset(m); }else{ INT32 e,i; struct array *a; #ifdef PIKE_DEBUG struct svalue *save_sp=sp+1; #endif push_multiset(m=allocate_multiset(a=allocate_array(tmp->size))); SET_CYCLIC_RET(m); for(e=0;e<a->size;e++) { push_svalue(tmp->item+e); o_cast(itype, run_time_itype); array_set_index(a,e,sp-1); pop_stack(); } #ifdef PIKE_DEBUG if(save_sp!=sp) fatal("o_cast left stack droppings.\n"); #endif order_multiset(m); END_CYCLIC(); } assign_svalue(sp-3,sp-1); pop_stack(); } pop_stack(); } break; case T_MAPPING: { struct pike_string *itype,*vtype; INT32 run_time_itype; INT32 run_time_vtype; push_string(itype=key_type(type,0)); run_time_itype=compile_type_to_runtime_type(itype); push_string(vtype=index_type(type,0)); run_time_vtype=compile_type_to_runtime_type(vtype); if(run_time_itype != T_MIXED || run_time_vtype != T_MIXED) { struct mapping *m; struct mapping *tmp=sp[-3].u.mapping; DECLARE_CYCLIC(); if((m=(struct mapping *)BEGIN_CYCLIC(tmp,0))) { ref_push_mapping(m); }else{ INT32 e,i; struct keypair *k; #ifdef PIKE_DEBUG struct svalue *save_sp=sp+1; #endif push_mapping(m=allocate_mapping(tmp->size)); SET_CYCLIC_RET(m); MAPPING_LOOP(tmp) { push_svalue(& k->ind); o_cast(itype, run_time_itype); push_svalue(& k->val); o_cast(vtype, run_time_vtype); mapping_insert(m,sp-2,sp-1); pop_n_elems(2); } #ifdef PIKE_DEBUG if(save_sp!=sp) fatal("o_cast left stack droppings.\n"); #endif END_CYCLIC(); } assign_svalue(sp-4,sp-1); pop_stack(); } pop_n_elems(2); } } } void f_cast(void) { #ifdef PIKE_DEBUG struct svalue *save_sp=sp; if(sp[-2].type != T_STRING) fatal("Cast expression destroyed stack or left droppings!\n"); #endif o_cast(sp[-2].u.string, compile_type_to_runtime_type(sp[-2].u.string)); #ifdef PIKE_DEBUG if(save_sp != sp) fatal("Internal error: o_cast() left droppings on stack.\n"); #endif free_svalue(sp-2); sp[-2]=sp[-1]; sp--; dmalloc_touch_svalue(sp); } /* flags: * operators: %d %s %f %c %n %[ %% */ static int read_set(unsigned char *match,int cnt,char *set,int match_len) { int init; int last=0; int e; if(cnt>=match_len) error("Error in sscanf format string.\n"); if(match[cnt]=='^') { for(e=0;e<256;e++) set[e]=1; init=0; cnt++; if(cnt>=match_len) error("Error in sscanf format string.\n"); }else{ for(e=0;e<256;e++) set[e]=0; init=1; } if(match[cnt]==']' || match[cnt]=='-') { set[last=match[cnt]]=init; cnt++; if(cnt>=match_len) error("Error in sscanf format string.\n"); } for(;match[cnt]!=']';cnt++) { if(match[cnt]=='-') { cnt++; if(cnt>=match_len) error("Error in sscanf format string.\n"); if(match[cnt]==']') { set['-']=init; break; } for(e=last;e<(int) EXTRACT_UCHAR(match+cnt);e++) set[e]=init; } set[last=EXTRACT_UCHAR(match+cnt)]=init; } return cnt; } /* Parse binary IEEE strings on a machine which uses a different kind of floating point internally */ #ifndef FLOAT_IS_IEEE_BIG #ifndef FLOAT_IS_IEEE_LITTLE #define NEED_CUSTOM_IEEE #endif #endif #ifndef NEED_CUSTOM_IEEE #ifndef DOUBLE_IS_IEEE_BIG #ifndef DOUBLE_IS_IEEE_LITTLE #define NEED_CUSTOM_IEEE #endif #endif #endif #ifdef NEED_CUSTOM_IEEE #if HAVE_LDEXP #define LDEXP ldexp #else extern double LDEXP(double x, int exp); /* defined in encode.c */ #endif static INLINE float low_parse_IEEE_float(char *b, int sz) { unsigned INT32 f, extra_f; int s, e; unsigned char x[4]; double r; x[0] = EXTRACT_UCHAR(b); x[1] = EXTRACT_UCHAR(b+1); x[2] = EXTRACT_UCHAR(b+2); x[3] = EXTRACT_UCHAR(b+3); s = ((x[0]&0x80)? 1 : 0); if(sz==4) { e = (((int)(x[0]&0x7f))<<1)|((x[1]&0x80)>>7); f = (((unsigned INT32)(x[1]&0x7f))<<16)|(((unsigned INT32)x[2])<<8)|x[3]; extra_f = 0; if(e==255) e = 9999; else if(e>0) { f |= 0x00800000; e -= 127+23; } else e -= 126+23; } else { e = (((int)(x[0]&0x7f))<<4)|((x[1]&0xf0)>>4); f = (((unsigned INT32)(x[1]&0x0f))<<16)|(((unsigned INT32)x[2])<<8)|x[3]; extra_f = (((unsigned INT32)EXTRACT_UCHAR(b+4))<<24)| (((unsigned INT32)EXTRACT_UCHAR(b+5))<<16)| (((unsigned INT32)EXTRACT_UCHAR(b+6))<<8)| ((unsigned INT32)EXTRACT_UCHAR(b+7)); if(e==2047) e = 9999; else if(e>0) { f |= 0x00100000; e -= 1023+20; } else e -= 1022+20; } if(e>=9999) if(f||extra_f) { /* NAN */ /* Hmm... No idea how to generate NaN in a portable way. */ /* Let's turn it into a 0 for now... */ return (float)0.0; } else { /* +/- Infinity */ #ifdef HUGE_VAL return (float)(s? -HUGE_VAL:HUGE_VAL); #else /* This number is infinite enough... :) */ e = 1024; f = 1; extra_f = 0; #endif } r = (double)f; if(extra_f) r += ((double)extra_f)/4294967296.0; return (float)(s? -LDEXP(r, e):LDEXP(r, e)); } #endif #ifdef PIKE_DEBUG #define DO_IF_DEBUG(X) X #else /* !PIKE_DEBUG */ #define DO_IF_DEBUG(X) #endif /* PIKE_DEBUG */ #ifdef AUTO_BIGNUM #define DO_IF_BIGNUM(X) X #else /* !AUTO_BIGNUM */ #define DO_IF_BIGNUM(X) #endif /* AUTO_BIGNUM */ #ifdef __CHECKER__ #define DO_IF_CHECKER(X) X #else /* !__CHECKER__ */ #define DO_IF_CHECKER(X) #endif /* __CHECKER__ */ #ifdef FLOAT_IS_IEEE_BIG #define EXTRACT_FLOAT(SVAL, INPUT, SHIFT) \ do { \ float f; \ ((char *)&f)[0] = *((INPUT)); \ ((char *)&f)[1] = *((INPUT)+1); \ ((char *)&f)[2] = *((INPUT)+2); \ ((char *)&f)[3] = *((INPUT)+3); \ (SVAL).u.float_number = f; \ } while(0) #else #ifdef FLOAT_IS_IEEE_LITTLE #define EXTRACT_FLOAT(SVAL, INPUT, SHIFT) \ do { \ float f; \ ((char *)&f)[3] = *((INPUT)); \ ((char *)&f)[2] = *((INPUT)+1); \ ((char *)&f)[1] = *((INPUT)+2); \ ((char *)&f)[0] = *((INPUT)+3); \ (SVAL).u.float_number = f; \ } while(0) #else #define EXTRACT_FLOAT(SVAL, INPUT, SHIFT) \ /* FIXME! */ \ (SVAL).u.float_number = low_parse_IEEE_float((INPUT), 4) #endif #endif #ifdef DOUBLE_IS_IEEE_BIG #define EXTRACT_DOUBLE(SVAL, INPUT, SHIFT) \ do { \ double d; \ ((char *)&d)[0] = *((INPUT)); \ ((char *)&d)[1] = *((INPUT)+1); \ ((char *)&d)[2] = *((INPUT)+2); \ ((char *)&d)[3] = *((INPUT)+3); \ ((char *)&d)[4] = *((INPUT)+4); \ ((char *)&d)[5] = *((INPUT)+5); \ ((char *)&d)[6] = *((INPUT)+6); \ ((char *)&d)[7] = *((INPUT)+7); \ (SVAL).u.float_number = (float)d; \ } while(0) #else #ifdef DOUBLE_IS_IEEE_LITTLE #define EXTRACT_DOUBLE(SVAL, INPUT, SHIFT) \ do { \ double d; \ ((char *)&d)[7] = *((INPUT)); \ ((char *)&d)[6] = *((INPUT)+1); \ ((char *)&d)[5] = *((INPUT)+2); \ ((char *)&d)[4] = *((INPUT)+3); \ ((char *)&d)[3] = *((INPUT)+4); \ ((char *)&d)[2] = *((INPUT)+5); \ ((char *)&d)[1] = *((INPUT)+6); \ ((char *)&d)[0] = *((INPUT)+7); \ (SVAL).u.float_number = (float)d; \ } while(0) #else #define EXTRACT_DOUBLE(SVAL, INPUT, SHIFT) \ /* FIXME! */ \ (SVAL).u.float_number = low_parse_IEEE_float((INPUT), 8) #endif #endif #define MK_VERY_LOW_SSCANF(INPUT_SHIFT, MATCH_SHIFT) \ static INT32 PIKE_CONCAT4(very_low_sscanf_,INPUT_SHIFT,_,MATCH_SHIFT)( \ PIKE_CONCAT(p_wchar, INPUT_SHIFT) *input, \ long input_len, \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *match, \ long match_len, \ long *chars_matched, \ int *success) \ { \ struct svalue sval; \ int e,cnt,matches,eye,arg; \ int no_assign = 0, field_length = 0, minus_flag = 0; \ char set[256]; \ struct svalue *argp; \ \ success[0]=0; \ \ arg=eye=matches=0; \ \ for(cnt = 0; cnt < match_len; cnt++) \ { \ for(;cnt<match_len;cnt++) \ { \ if(match[cnt]=='%') \ { \ if(match[cnt+1]=='%') \ { \ cnt++; \ }else{ \ break; \ } \ } \ if(eye>=input_len || input[eye]!=match[cnt]) \ { \ chars_matched[0]=eye; \ return matches; \ } \ eye++; \ } \ if(cnt>=match_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ \ DO_IF_DEBUG( \ if(match[cnt]!='%' || match[cnt+1]=='%') \ { \ fatal("Error in sscanf.\n"); \ } \ ); \ \ no_assign=0; \ field_length=-1; \ minus_flag=0; \ \ cnt++; \ if(cnt>=match_len) \ error("Error in sscanf format string.\n"); \ \ while(1) \ { \ switch(match[cnt]) \ { \ case '*': \ no_assign=1; \ cnt++; \ if(cnt>=match_len) \ error("Error in sscanf format string.\n"); \ continue; \ \ case '0': case '1': case '2': case '3': case '4': \ case '5': case '6': case '7': case '8': case '9': \ { \ PCHARP t; \ field_length = STRTOL_PCHARP(MKPCHARP(match+cnt, MATCH_SHIFT),\ &t,10); \ cnt = SUBTRACT_PCHARP(t, MKPCHARP(match, MATCH_SHIFT)); \ continue; \ } \ \ case '-': \ minus_flag=1; \ cnt++; \ continue; \ \ case '{': \ { \ ONERROR err; \ long tmp; \ for(e=cnt+1,tmp=1;tmp;e++) \ { \ if(!match[e]) \ { \ error("Missing %%} in format string.\n"); \ break; /* UNREACHED */ \ } \ if(match[e]=='%') \ { \ switch(match[e+1]) \ { \ case '%': e++; break; \ case '}': tmp--; break; \ case '{': tmp++; break; \ } \ } \ } \ sval.type=T_ARRAY; \ sval.u.array=allocate_array(0); \ SET_ONERROR(err, do_free_array, sval.u.array); \ \ while(input_len-eye) \ { \ int yes; \ struct svalue *save_sp=sp; \ PIKE_CONCAT4(very_low_sscanf_, INPUT_SHIFT, _, MATCH_SHIFT)(\ input+eye, \ input_len-eye, \ match+cnt+1, \ e-cnt-2, \ &tmp, \ &yes); \ if(yes && tmp) \ { \ f_aggregate(sp-save_sp); \ sval.u.array=append_array(sval.u.array,sp-1); \ pop_stack(); \ eye+=tmp; \ }else{ \ pop_n_elems(sp-save_sp); \ break; \ } \ } \ cnt=e; \ UNSET_ONERROR(err); \ break; \ } \ \ case 'c': \ if(field_length == -1) field_length = 1; \ if(eye+field_length > input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ sval.type=T_INT; \ sval.subtype=NUMBER_NUMBER; \ sval.u.integer=0; \ if (minus_flag) \ { \ int x, pos=0; \ \ while(--field_length >= 0) \ { \ int lshfun, orfun; \ x = input[eye]; \ \ DO_IF_BIGNUM( \ if(INT_TYPE_LSH_OVERFLOW(x, pos)) \ { \ push_int(sval.u.integer); \ convert_stack_top_to_bignum(); \ lshfun=FIND_LFUN(sp[-1].u.object->prog, LFUN_LSH); \ orfun=FIND_LFUN(sp[-1].u.object->prog, LFUN_OR); \ \ while(field_length-- >= 0) \ { \ push_int(input[eye]); \ convert_stack_top_to_bignum(); \ push_int(pos); \ apply_low(sp[-2].u.object, lshfun, 1); \ stack_swap(); \ pop_stack(); \ apply_low(sp[-2].u.object, orfun, 1); \ stack_swap(); \ pop_stack(); \ pos+=8; \ eye++; \ } \ sval=*--sp; \ break; \ } \ ); \ sval.u.integer|=x<<pos; \ \ pos+=8; \ eye++; \ } \ } \ else \ while(--field_length >= 0) \ { \ int lshfun, orfun; \ DO_IF_BIGNUM( \ if(INT_TYPE_LSH_OVERFLOW(sval.u.integer, 8)) \ { \ push_int(sval.u.integer); \ convert_stack_top_to_bignum(); \ lshfun=FIND_LFUN(sp[-1].u.object->prog, LFUN_LSH); \ orfun=FIND_LFUN(sp[-1].u.object->prog, LFUN_OR); \ \ while(field_length-- >= 0) \ { \ push_int(8); \ apply_low(sp[-2].u.object, lshfun, 1); \ stack_swap(); \ pop_stack(); \ push_int(input[eye]); \ apply_low(sp[-2].u.object, orfun, 1); \ stack_swap(); \ pop_stack(); \ eye++; \ } \ sval=*--sp; \ break; \ } \ ); \ sval.u.integer<<=8; \ sval.u.integer |= input[eye]; \ eye++; \ } \ break; \ \ case 'b': \ case 'o': \ case 'd': \ case 'x': \ case 'D': \ case 'i': \ { \ int base = 0; \ PIKE_CONCAT(p_wchar, INPUT_SHIFT) *t; \ \ if(eye>=input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ \ switch(match[cnt]) \ { \ case 'b': base = 2; break; \ case 'o': base = 8; break; \ case 'd': base = 10; break; \ case 'x': base = 16; break; \ } \ \ wide_string_to_svalue_inumber(&sval, input+eye, (void **)&t, \ base, field_length, \ INPUT_SHIFT); \ \ if(input + eye == t) \ { \ chars_matched[0]=eye; \ return matches; \ } \ eye=t-input; \ break; \ } \ \ case 'f': \ { \ PIKE_CONCAT(p_wchar, INPUT_SHIFT) *t; \ PCHARP t2; \ \ if(eye>=input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ sval.u.float_number=STRTOD_PCHARP(MKPCHARP(input+eye, \ INPUT_SHIFT),&t2); \ t = (PIKE_CONCAT(p_wchar, INPUT_SHIFT) *)(t2.ptr); \ if(input + eye == t) \ { \ chars_matched[0]=eye; \ return matches; \ } \ eye=t-input; \ sval.type=T_FLOAT; \ DO_IF_CHECKER(sval.subtype=0); \ break; \ } \ \ case 'F': \ if(field_length == -1) field_length = 4; \ if(field_length != 4 && field_length != 8) \ error("Invalid IEEE width %d in sscanf format string.\n", \ field_length); \ if(eye+field_length > input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ sval.type=T_FLOAT; \ DO_IF_CHECKER(sval.subtype=0); \ switch(field_length) { \ case 4: \ EXTRACT_FLOAT(sval, input+eye, INPUT_SHIFT); \ eye += 4; \ break; \ case 8: \ EXTRACT_DOUBLE(sval, input+eye, INPUT_SHIFT); \ eye += 8; \ break; \ } \ break; \ \ case 's': \ if(field_length != -1) \ { \ if(input_len - eye < field_length) \ { \ chars_matched[0]=eye; \ return matches; \ } \ \ sval.type=T_STRING; \ DO_IF_CHECKER(sval.subtype=0); \ sval.u.string=PIKE_CONCAT(make_shared_binary_string, \ INPUT_SHIFT)(input+eye, \ field_length); \ eye+=field_length; \ break; \ } \ \ if(cnt+1>=match_len) \ { \ sval.type=T_STRING; \ DO_IF_CHECKER(sval.subtype=0); \ sval.u.string=PIKE_CONCAT(make_shared_binary_string, \ INPUT_SHIFT)(input+eye, \ input_len-eye); \ eye=input_len; \ break; \ }else{ \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *end_str_start; \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *end_str_end; \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *s=0; \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *p=0; \ int start,contains_percent_percent, new_eye; \ \ start=eye; \ end_str_start=match+cnt+1; \ \ s=match+cnt+1; \ test_again: \ if(*s=='%') \ { \ s++; \ if(*s=='*') s++; \ switch(*s) \ { \ case 'n': \ s++; \ goto test_again; \ \ case 's': \ error("Illegal to have two adjecent %%s.\n"); \ return 0; /* make gcc happy */ \ \ /* sscanf("foo-bar","%s%d",a,b) might not work as expected */ \ case 'd': \ for(e=0;e<256;e++) set[e]=1; \ for(e='0';e<='9';e++) set[e]=0; \ set['-']=0; \ goto match_set; \ \ case 'o': \ for(e=0;e<256;e++) set[e]=1; \ for(e='0';e<='7';e++) set[e]=0; \ goto match_set; \ \ case 'x': \ for(e=0;e<256;e++) set[e]=1; \ for(e='0';e<='9';e++) set[e]=0; \ for(e='a';e<='f';e++) set[e]=0; \ goto match_set; \ \ case 'D': \ for(e=0;e<256;e++) set[e]=1; \ for(e='0';e<='9';e++) set[e]=0; \ set['-']=0; \ set['x']=0; \ goto match_set; \ \ case 'f': \ for(e=0;e<256;e++) set[e]=1; \ for(e='0';e<='9';e++) set[e]=0; \ set['.']=set['-']=0; \ goto match_set; \ \ case '[': /* oh dear */ \ /* FIXME! */ \ read_set(match,s-match+1,set,match_len); \ for(e=0;e<256;e++) set[e]=!set[e]; \ goto match_set; \ } \ } \ \ contains_percent_percent=0; \ \ for(e=cnt;e<match_len;e++) \ { \ if(match[e]=='%') \ { \ if(match[e+1]=='%') \ { \ contains_percent_percent=1; \ e++; \ }else{ \ break; \ } \ } \ } \ \ end_str_end=match+e; \ \ if(!contains_percent_percent) \ { \ struct generic_mem_searcher searcher; \ PIKE_CONCAT(p_wchar, INPUT_SHIFT) *s2; \ init_generic_memsearcher(&searcher, end_str_start, \ end_str_end - end_str_start, \ MATCH_SHIFT, input_len - eye, \ INPUT_SHIFT); \ s2 = generic_memory_search(&searcher, input+eye, \ input_len - eye, INPUT_SHIFT); \ if(!s2) \ { \ chars_matched[0]=eye; \ return matches; \ } \ eye=s2-input; \ new_eye=eye+end_str_end-end_str_start; \ }else{ \ PIKE_CONCAT(p_wchar, INPUT_SHIFT) *p2 = NULL; \ for(;eye<input_len;eye++) \ { \ p2=input+eye; \ for(s=end_str_start;s<end_str_end;s++,p2++) \ { \ if(*s!=*p2) break; \ if(*s=='%') s++; \ } \ if(s==end_str_end) \ break; \ } \ if(eye==input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ new_eye=p2-input; \ } \ \ sval.type=T_STRING; \ DO_IF_CHECKER(sval.subtype=0); \ sval.u.string=PIKE_CONCAT(make_shared_binary_string, \ INPUT_SHIFT)(input+start, \ eye-start); \ \ cnt=end_str_end-match-1; \ eye=new_eye; \ break; \ } \ \ case '[': \ /* FIXME! */ \ cnt=read_set(match,cnt+1,set,match_len); \ \ match_set: \ /* FIXME! */ \ for(e=eye;eye<input_len && !(input[eye]&~0xff) && \ set[input[eye]];eye++); \ sval.type=T_STRING; \ DO_IF_CHECKER(sval.subtype=0); \ sval.u.string=PIKE_CONCAT(make_shared_binary_string, \ INPUT_SHIFT)(input+e,eye-e); \ break; \ \ case 'n': \ sval.type=T_INT; \ sval.subtype=NUMBER_NUMBER; \ sval.u.integer=eye; \ break; \ \ default: \ error("Unknown sscanf token %%%c(0x%02x)\n", \ match[cnt], match[cnt]); \ } \ break; \ } \ matches++; \ \ if(no_assign) \ { \ free_svalue(&sval); \ }else{ \ check_stack(1); \ *sp++=sval; \ DO_IF_DEBUG(sval.type=99); \ } \ } \ chars_matched[0]=eye; \ success[0]=1; \ return matches; \ } MK_VERY_LOW_SSCANF(0,0) MK_VERY_LOW_SSCANF(0,1) MK_VERY_LOW_SSCANF(0,2) MK_VERY_LOW_SSCANF(1,0) MK_VERY_LOW_SSCANF(1,1) MK_VERY_LOW_SSCANF(1,2) MK_VERY_LOW_SSCANF(2,0) MK_VERY_LOW_SSCANF(2,1) MK_VERY_LOW_SSCANF(2,2) void o_sscanf(INT32 args) { #ifdef PIKE_DEBUG extern int t_flag; #endif INT32 e,i; int x; long matched_chars; struct svalue *save_sp=sp; if(sp[-args].type != T_STRING) error("Bad argument 1 to sscanf().\n"); if(sp[1-args].type != T_STRING) error("Bad argument 1 to sscanf().\n"); switch(sp[-args].u.string->size_shift*3 + sp[1-args].u.string->size_shift) { /* input_shift : match_shift */ case 0: /* 0 : 0 */ i=very_low_sscanf_0_0(STR0(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 1: /* 0 : 1 */ i=very_low_sscanf_0_1(STR0(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 2: /* 0 : 2 */ i=very_low_sscanf_0_2(STR0(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 3: /* 1 : 0 */ i=very_low_sscanf_1_0(STR1(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 4: /* 1 : 1 */ i=very_low_sscanf_1_1(STR1(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 5: /* 1 : 2 */ i=very_low_sscanf_1_2(STR1(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 6: /* 2 : 0 */ i=very_low_sscanf_2_0(STR2(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 7: /* 2 : 1 */ i=very_low_sscanf_2_1(STR2(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 8: /* 2 : 2 */ i=very_low_sscanf_2_2(STR2(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; default: error("Unsupported shift-combination to sscanf(): %d:%d\n", sp[-args].u.string->size_shift, sp[1-args].u.string->size_shift); break; } if(sp-save_sp > args/2-1) error("Too few arguments for sscanf format.\n"); for(x=0;x<sp-save_sp;x++) assign_lvalue(save_sp-args+2+x*2,save_sp+x); pop_n_elems(sp-save_sp +args); #ifdef PIKE_DEBUG if(t_flag >2) { int nonblock; if((nonblock=query_nonblocking(2))) set_nonblocking(2,0); fprintf(stderr,"- Matches: %ld\n",(long)i); if(nonblock) set_nonblocking(2,1); } #endif push_int(i); } void f_sscanf(INT32 args) { #ifdef PIKE_DEBUG extern int t_flag; #endif INT32 e,i; int x; long matched_chars; struct svalue *save_sp=sp; struct array *a; check_all_args("array_sscanf",args,BIT_STRING, BIT_STRING,0); switch(sp[-args].u.string->size_shift*3 + sp[1-args].u.string->size_shift) { /* input_shift : match_shift */ case 0: /* 0 : 0 */ i=very_low_sscanf_0_0(STR0(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 1: /* 0 : 1 */ i=very_low_sscanf_0_1(STR0(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 2: /* 0 : 2 */ i=very_low_sscanf_0_2(STR0(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 3: /* 1 : 0 */ i=very_low_sscanf_1_0(STR1(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 4: /* 1 : 1 */ i=very_low_sscanf_1_1(STR1(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 5: /* 1 : 2 */ i=very_low_sscanf_1_2(STR1(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 6: /* 2 : 0 */ i=very_low_sscanf_2_0(STR2(sp[-args].u.string), sp[-args].u.string->len, STR0(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 7: /* 2 : 1 */ i=very_low_sscanf_2_1(STR2(sp[-args].u.string), sp[-args].u.string->len, STR1(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; case 8: /* 2 : 2 */ i=very_low_sscanf_2_2(STR2(sp[-args].u.string), sp[-args].u.string->len, STR2(sp[1-args].u.string), sp[1-args].u.string->len, &matched_chars, &x); break; default: error("Unsupported shift-combination to sscanf(): %d:%d\n", sp[-args].u.string->size_shift, sp[1-args].u.string->size_shift); break; } a=aggregate_array(sp-save_sp); pop_n_elems(args); push_array(a); }

pike.git/ src/ opcodes.c > ceb27fc0d825d1d28dc842d4c3923857e20f88e0 [Annotate]