pike.git/src/opcodes.c:6aa68be7c3f285d6f21dc50dca6fe9f3d4b61a51

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1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 /*\ ||| 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" #include "operators.h" RCSID("$Id: opcodes.c,v 1.86 2000/08/14 20:31:17 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: { INT_TYPE val = what->u.integer; convert_svalue_to_bignum(what); index_no_free(to, what, ind); if(IS_UNDEFINED(to)) { if (val) { error("Indexing the integer %d with an unknown method.\n", val); } else { error("Indexing the NULL value.\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_MULTISET: switch(sp[-1].type) { case T_ARRAY: { extern void f_mkmultiset(INT32); f_mkmultiset(1); break; } default: error("Cannot cast %s to multiset.\n",get_name_of_type(sp[-1].type)); } break; 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=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. */ 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_PCHARP(MKPCHARP(sp[-1].u.string->str, sp[-1].u.string->size_shift),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(Pike_fp->pc) { INT32 lineno; push_text(get_line(Pike_fp->pc, Pike_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(Pike_fp->pc) { INT32 lineno; push_text(get_line(Pike_fp->pc, Pike_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,int_type_string,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,mixed_type_string,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(m_sizeof(tmp))); 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); } } } PMOD_EXPORT 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 %[ %% */ struct sscanf_set { int neg; char c[256]; struct array *a; }; /* FIXME: * This implementation will break in certain cases, especially cases * like this [\1000-\1002\1001] (ie, there is a single character which * is also a part of a range * /Hubbe */ #define MKREADSET(SIZE) \ static ptrdiff_t PIKE_CONCAT(read_set,SIZE) ( \ PIKE_CONCAT(p_wchar,SIZE) *match, \ ptrdiff_t cnt, \ struct sscanf_set *set, \ ptrdiff_t match_len) \ { \ size_t e, last = 0; \ CHAROPT( int set_size=0; ) \ \ if(cnt>=match_len) \ error("Error in sscanf format string.\n"); \ \ MEMSET(set->c, 0, sizeof(set->c)); \ set->a=0; \ \ if(match[cnt]=='^') \ { \ set->neg=1; \ cnt++; \ if(cnt>=match_len) \ error("Error in sscanf format string.\n"); \ }else{ \ set->neg=0; \ } \ \ if(match[cnt]==']' || match[cnt]=='-') \ { \ set->c[last=match[cnt]]=1; \ 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->c['-']=1; \ break; \ } \ \ if(last >= match[cnt]) \ error("Error in sscanf format string.\n"); \ \ CHAROPT( \ if(last < (size_t)sizeof(set->c)) \ { \ if(match[cnt] < (size_t)sizeof(set->c)) \ { \ ) \ for(e=last;e<=match[cnt];e++) set->c[e]=1; \ CHAROPT( \ }else{ \ for(e=last;e<(size_t)sizeof(set->c);e++) \ set->c[e]=1; \ \ check_stack(2); \ push_int(256); \ push_int(match[cnt]); \ set_size++; \ } \ } \ else \ { \ sp[-1].u.integer=match[cnt]; \ } \ ) \ continue; \ } \ last=match[cnt]; \ if(last < (size_t)sizeof(set->c)) \ set->c[last]=1; \ CHAROPT( \ else{ \ if(set_size && \ ((size_t)sp[-1].u.integer) == last-1) \ { \ sp[-1].u.integer++; \ }else{ \ check_stack(2); \ push_int(last); \ push_int(last); \ set_size++; \ } \ } \ ) \ } \ \ CHAROPT( \ if(set_size) \ { \ INT32 *order; \ set->a=aggregate_array(set_size*2); \ order=get_switch_order(set->a); \ for(e=0;e<(size_t)set->a->size;e+=2) \ { \ if(order[e]+1 != order[e+1]) \ { \ free_array(set->a); \ set->a=0; \ free((char *)order); \ error("Overlapping ranges in sscanf not supported.\n"); \ } \ } \ \ order_array(set->a,order); \ free((char *)order); \ } \ ) \ 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_TYPE 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_TYPE)0.0; } else { /* +/- Infinity */ #ifdef HUGE_VAL return (FLOAT_TYPE)(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_TYPE)(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) \ do { \ char x[4]; \ x[0] = (INPUT)[0]; \ x[1] = (INPUT)[1]; \ x[2] = (INPUT)[2]; \ x[3] = (INPUT)[3]; \ (SVAL).u.float_number = low_parse_IEEE_float(x, 4); \ } while(0) #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_TYPE)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_TYPE)d; \ } while(0) #else #define EXTRACT_DOUBLE(SVAL, INPUT, SHIFT) \ do { \ char x[8]; \ x[0] = (INPUT)[0]; \ x[1] = (INPUT)[1]; \ x[2] = (INPUT)[2]; \ x[3] = (INPUT)[3]; \ x[4] = (INPUT)[4]; \ x[5] = (INPUT)[5]; \ x[6] = (INPUT)[6]; \ x[7] = (INPUT)[7]; \ (SVAL).u.float_number = low_parse_IEEE_float(x, 8); \ } while(0) #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, \ ptrdiff_t input_len, \ PIKE_CONCAT(p_wchar, MATCH_SHIFT) *match, \ ptrdiff_t match_len, \ ptrdiff_t *chars_matched, \ int *success) \ { \ struct svalue sval; \ INT32 matches, arg; \ ptrdiff_t cnt, eye, e, field_length = 0; \ int no_assign = 0, minus_flag = 0; \ struct sscanf_set set; \ struct svalue *argp; \ \ \ set.a = 0; \ success[0] = 0; \ \ eye = arg = 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; \ ptrdiff_t tmp; \ for(e=cnt+1,tmp=1;tmp;e++) \ { \ if(e>=match_len) \ { \ 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': \ { \ int e; \ sval.type=T_INT; \ sval.subtype=NUMBER_NUMBER; \ if(field_length == -1) \ { \ if(eye+1 > input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ sval.u.integer=input[eye]; \ eye++; \ break; \ } \ if(eye+field_length > input_len) \ { \ chars_matched[0]=eye; \ return matches; \ } \ CHAROPT2( \ for(e=0;e<field_length;e++) \ { \ if(input[eye+e]>255) \ { \ chars_matched[0]=eye; \ return matches; \ } \ } \ ) \ 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(); \ \ while(field_length-- >= 0) \ { \ push_int(input[eye]); \ convert_stack_top_to_bignum(); \ push_int(pos); \ o_lsh(); \ o_or(); \ pos+=8; \ eye++; \ } \ sval=*--sp; \ break; \ } \ ); \ sval.u.integer|=x<<pos; \ \ pos+=8; \ eye++; \ } \ } \ else \ while(--field_length >= 0) \ { \ DO_IF_BIGNUM( \ if(INT_TYPE_LSH_OVERFLOW(sval.u.integer, 8)) \ { \ push_int(sval.u.integer); \ convert_stack_top_to_bignum(); \ \ while(field_length-- >= 0) \ { \ push_int(8); \ o_lsh(); \ push_int(input[eye]); \ o_or(); \ 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 contains_percent_percent; \ ptrdiff_t start, new_eye; \ \ start=eye; \ end_str_start=match+cnt+1; \ \ s=match+cnt+1; \ test_again: \ if(*s=='%') \ { \ s++; \ if(*s=='*') s++; \ set.neg=0; \ 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': \ MEMSET(set.c, 1, sizeof(set.c)); \ for(e='0';e<='9';e++) set.c[e]=0; \ set.c['-']=0; \ goto match_set; \ \ case 'o': \ MEMSET(set.c, 1, sizeof(set.c)); \ for(e='0';e<='7';e++) set.c[e]=0; \ goto match_set; \ \ case 'x': \ MEMSET(set.c, 1, sizeof(set.c)); \ for(e='0';e<='9';e++) set.c[e]=0; \ for(e='a';e<='f';e++) set.c[e]=0; \ goto match_set; \ \ case 'D': \ MEMSET(set.c, 1, sizeof(set.c)); \ for(e='0';e<='9';e++) set.c[e]=0; \ set.c['-']=0; \ set.c['x']=0; \ goto match_set; \ \ case 'f': \ MEMSET(set.c, 1, sizeof(set.c)); \ for(e='0';e<='9';e++) set.c[e]=0; \ set.c['.']=set.c['-']=0; \ goto match_set; \ \ case '[': /* oh dear */ \ PIKE_CONCAT(read_set,MATCH_SHIFT)(match, \ s-match+1, \ &set, \ match_len); \ set.neg=!set.neg; \ 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 '[': \ cnt=PIKE_CONCAT(read_set,MATCH_SHIFT)(match,cnt+1, \ &set,match_len); \ \ match_set: \ for(e=eye;eye<input_len;eye++) \ { \ CHAROPT2( \ if(input[eye]<sizeof(set.c)) \ { \ ) \ if(set.c[input[eye]] == set.neg) \ break; \ CHAROPT2( \ }else{ \ if(set.a) \ { \ INT32 x; \ struct svalue tmp; \ tmp.type=T_INT; \ tmp.u.integer=input[eye]; \ x=switch_lookup(set.a, &tmp); \ if( set.neg != (x<0 && (x&1)) ) break; \ }else{ \ break; \ } \ } \ ) \ } \ if(set.a) { free_array(set.a); set.a=0; } \ 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; \ } /* Confusing? Yes - Hubbe */ /* CHAROPT(X) is X if the match set is wide. * CHAROPT2(X) is X if the input is wide. */ #define CHAROPT(X) #define CHAROPT2(X) MKREADSET(0) MK_VERY_LOW_SSCANF(0,0) #undef CHAROPT2 #define CHAROPT2(X) X MK_VERY_LOW_SSCANF(1,0) MK_VERY_LOW_SSCANF(2,0) #undef CHAROPT #define CHAROPT(X) X MKREADSET(1) MKREADSET(2) #undef CHAROPT2 #define CHAROPT2(X) MK_VERY_LOW_SSCANF(0,1) MK_VERY_LOW_SSCANF(0,2) #undef CHAROPT2 #define CHAROPT2(X) X MK_VERY_LOW_SSCANF(1,1) MK_VERY_LOW_SSCANF(2,1) MK_VERY_LOW_SSCANF(1,2) MK_VERY_LOW_SSCANF(2,2) void o_sscanf(INT32 args) { #ifdef PIKE_DEBUG extern int t_flag; #endif INT32 e,i; int x; ptrdiff_t 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); } PMOD_EXPORT void f_sscanf(INT32 args) { #ifdef PIKE_DEBUG extern int t_flag; #endif INT32 e,i; int x; ptrdiff_t 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(DO_NOT_WARN(sp - save_sp)); pop_n_elems(args); push_array(a); }

pike.git/ src/ opcodes.c > 6aa68be7c3f285d6f21dc50dca6fe9f3d4b61a51 [Annotate]