pike.git/src/array.c:73a2a132594f4e1a30ae594132cf3cd3f6231035

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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 /*\ ||| 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 "svalue.h" #include "array.h" #include "object.h" #include "las.h" #include "stralloc.h" #include "interpret.h" #include "language.h" #include "error.h" #include "pike_types.h" #include "fsort.h" #include "builtin_functions.h" #include "pike_memory.h" #include "gc.h" #include "main.h" RCSID("$Id: array.c,v 1.34 1998/04/23 23:58:52 hubbe Exp $"); struct array empty_array= { 1, /* Never free */ &empty_array, /* Next */ &empty_array, /* previous (circular) */ 0, /* Size = 0 */ 0, /* malloced Size = 0 */ 0, /* no types */ 0, /* no flags */ }; /* Allocate an array, this might be changed in the future to * allocate linked lists or something * NOTE: the new array have zero references */ struct array *low_allocate_array(INT32 size,INT32 extra_space) { struct array *v; INT32 e; if(size == 0) { add_ref(&empty_array); return &empty_array; } GC_ALLOC(); v=(struct array *)malloc(sizeof(struct array)+ (size+extra_space-1)*sizeof(struct svalue)); if(!v) error("Couldn't allocate array, out of memory.\n"); /* for now, we don't know what will go in here */ v->type_field=BIT_MIXED | BIT_UNFINISHED; v->flags=0; v->malloced_size=size+extra_space; v->size=size; v->refs=1; v->prev=&empty_array; v->next=empty_array.next; empty_array.next=v; v->next->prev=v; for(e=0;e<v->size;e++) { ITEM(v)[e].type=T_INT; ITEM(v)[e].subtype=NUMBER_NUMBER; ITEM(v)[e].u.integer=0; } return v; } /* * Free an array without freeing the values inside it */ static void array_free_no_free(struct array *v) { struct array *next,*prev; next = v->next; prev = v->prev; v->prev->next=next; v->next->prev=prev; free((char *)v); GC_FREE(); } /* * Free an array, call this when the array has zero references */ void really_free_array(struct array *v) { #ifdef DEBUG if(v == & empty_array) fatal("Tried to free the empty_array.\n"); #endif #ifdef DEBUG if(d_flag > 1) array_check_type_field(v); #endif add_ref(v); free_svalues(ITEM(v), v->size, v->type_field); v->refs--; array_free_no_free(v); } void do_free_array(struct array *a) { free_array(a); } /* * Extract an svalue from an array */ void array_index_no_free(struct svalue *s,struct array *v,INT32 index) { #ifdef DEBUG if(index<0 || index>=v->size) fatal("Illegal index in low level index routine.\n"); #endif assign_svalue_no_free(s, ITEM(v) + index); } /* * Extract an svalue from an array */ void array_index(struct svalue *s,struct array *v,INT32 index) { #ifdef DEBUG if(index<0 || index>=v->size) fatal("Illegal index in low level index routine.\n"); #endif add_ref(v); assign_svalue(s, ITEM(v) + index); free_array(v); } void simple_array_index_no_free(struct svalue *s, struct array *a,struct svalue *ind) { INT32 i; switch(ind->type) { case T_INT: i=ind->u.integer; if(i<0) i+=a->size; if(i<0 || i>=a->size) error("Index out of range.\n"); array_index_no_free(s,a,i); break; case T_STRING: check_stack(4); ref_push_array(a); assign_svalue_no_free(sp++,ind); f_column(2); s[0]=sp[-1]; sp--; break; default: error("Index is not an integer.\n"); } } /* * Extract an svalue from an array */ void array_free_index(struct array *v,INT32 index) { #ifdef DEBUG if(index<0 || index>=v->size) fatal("Illegal index in low level free index routine.\n"); #endif free_svalue(ITEM(v) + index); } /* * Set an index in an array */ void array_set_index(struct array *v,INT32 index, struct svalue *s) { #ifdef DEBUG if(index<0 || index>v->size) fatal("Illegal index in low level array set routine.\n"); #endif add_ref(v); check_destructed(s); v->type_field = (v->type_field & ~BIT_UNFINISHED) | 1 << s->type; assign_svalue( ITEM(v) + index, s); free_array(v); } void simple_set_index(struct array *a,struct svalue *ind,struct svalue *s) { INT32 i; if(ind->type != T_INT) error("Index is not an integer.\n"); i=ind->u.integer; if(i<0) i+=a->size; if(i<0 || i>=a->size) error("Index out of range.\n"); array_set_index(a,i,s); } /* * Insert an svalue into an array, grow the array if nessesary */ struct array *array_insert(struct array *v,struct svalue *s,INT32 index) { #ifdef DEBUG if(index<0 || index>v->size) fatal("Illegal index in low level insert routine.\n"); #endif /* Can we fit it into the existing block? */ if(v->refs<=1 && v->malloced_size > v->size) { MEMMOVE((char *)(ITEM(v)+index+1), (char *)(ITEM(v)+index), (v->size-index) * sizeof(struct svalue)); ITEM(v)[index].type=T_INT; #ifdef __CHECKER__ ITEM(v)[index].subtype=0; ITEM(v)[index].u.refs=0; #endif v->size++; }else{ struct array *ret; ret=allocate_array_no_init(v->size+1, (v->size >> 3) + 1); ret->type_field = v->type_field; MEMCPY(ITEM(ret), ITEM(v), sizeof(struct svalue) * index); MEMCPY(ITEM(ret)+index+1, ITEM(v)+index, sizeof(struct svalue) * (v->size-index)); ITEM(ret)[index].type=T_INT; #ifdef __CHECKER__ ITEM(ret)[index].subtype=0; ITEM(ret)[index].u.refs=0; #endif v->size=0; free_array(v); v=ret; } array_set_index(v,index,s); return v; } /* * resize array, resize an array destructively */ struct array *resize_array(struct array *a, INT32 size) { #ifdef DEBUG if(d_flag > 1) array_check_type_field(a); #endif if(a->size == size) return a; if(size > a->size) { /* We should grow the array */ if(a->malloced_size >= size) { for(;a->size < size; a->size++) { ITEM(a)[a->size].type=T_INT; ITEM(a)[a->size].subtype=NUMBER_NUMBER; ITEM(a)[a->size].u.integer=0; } a->type_field |= BIT_INT; return a; }else{ struct array *ret; ret=low_allocate_array(size, (size>>3)+1); MEMCPY(ITEM(ret),ITEM(a),sizeof(struct svalue)*a->size); ret->type_field = a->type_field | BIT_INT; a->size=0; free_array(a); return ret; } }else{ /* We should shrink the array */ free_svalues(ITEM(a)+size, a->size - size, a->type_field); a->size = size; return a; } } /* * Shrink an array destructively */ struct array *array_shrink(struct array *v,INT32 size) { struct array *a; #ifdef DEBUG if(v->refs>2) /* Odd, but has to be two */ fatal("Array shrink on array with many references.\n"); if(size > v->size) fatal("Illegal argument to array_shrink.\n"); #endif if(size*2 < v->malloced_size + 4) /* Should we realloc it? */ { a=allocate_array_no_init(size,0); a->type_field = v->type_field; free_svalues(ITEM(v) + size, v->size - size, v->type_field); MEMCPY(ITEM(a), ITEM(v), size*sizeof(struct svalue)); v->size=0; free_array(v); return a; }else{ free_svalues(ITEM(v) + size, v->size - size, v->type_field); v->size=size; return v; } } /* * Remove an index from an array and shrink the array */ struct array *array_remove(struct array *v,INT32 index) { struct array *a; #ifdef DEBUG if(v->refs>1) fatal("Array remove on array with many references.\n"); if(index<0 || index >= v->size) fatal("Illegal argument to array_remove.\n"); #endif array_free_index(v, index); if(v->size!=1 && v->size*2 + 4 < v->malloced_size ) /* Should we realloc it? */ { a=allocate_array_no_init(v->size-1, 0); a->type_field = v->type_field; if(index>0) MEMCPY(ITEM(a), ITEM(v), index*sizeof(struct svalue)); if(v->size-index>1) MEMCPY(ITEM(a)+index, ITEM(v)+index+1, (v->size-index-1)*sizeof(struct svalue)); v->size=0; free_array(v); return a; }else{ if(v->size-index>1) { MEMMOVE((char *)(ITEM(v)+index), (char *)(ITEM(v)+index+1), (v->size-index-1)*sizeof(struct svalue)); } v->size--; return v; } } /* * Search for in svalue in an array. * return the index if found, -1 otherwise */ INT32 array_search(struct array *v, struct svalue *s,INT32 start) { INT32 e; #ifdef DEBUG if(start<0) fatal("Start of find_index is less than zero.\n"); #endif check_destructed(s); /* Why search for something that is not there? */ #ifdef DEBUG if(d_flag > 1) array_check_type_field(v); #endif if(v->type_field & (1 << s->type)) { if(start) { for(e=start;e<v->size;e++) if(is_eq(ITEM(v)+e,s)) return e; }else{ TYPE_FIELD t=0; for(e=0;e<v->size;e++) { if(is_eq(ITEM(v)+e,s)) return e; t |= 1<<ITEM(v)[e].type; } v->type_field=t; } } return -1; } /* * Slice a pice of an array (nondestructively) * return an array consisting of v[start..end-1] */ struct array *slice_array(struct array *v,INT32 start,INT32 end) { struct array *a; #ifdef DEBUG if(start > end || end>v->size || start<0) fatal("Illegal arguments to slice_array()\n"); if(d_flag > 1) array_check_type_field(v); #endif if(start==0 && v->refs==1) /* Can we use the same array? */ { add_ref(v); return array_shrink(v,end); } a=allocate_array_no_init(end-start,0); a->type_field = v->type_field; assign_svalues_no_free(ITEM(a), ITEM(v)+start, end-start, v->type_field); return a; } /* * Slice a pice of an array (nondestructively) * return an array consisting of v[start..end-1] */ struct array *friendly_slice_array(struct array *v,INT32 start,INT32 end) { struct array *a; #ifdef DEBUG if(start > end || end>v->size || start<0) fatal("Illegal arguments to slice_array()\n"); if(d_flag > 1) array_check_type_field(v); #endif a=allocate_array_no_init(end-start,0); a->type_field = v->type_field; assign_svalues_no_free(ITEM(a), ITEM(v)+start, end-start, v->type_field); return a; } /* * Copy an array */ struct array *copy_array(struct array *v) { struct array *a; a=allocate_array_no_init(v->size, 0); a->type_field = v->type_field; assign_svalues_no_free(ITEM(a), ITEM(v), v->size, v->type_field); return a; } /* * Clean an array from destructed objects */ void check_array_for_destruct(struct array *v) { int e; INT16 types; types = 0; #ifdef DEBUG if(d_flag > 1) array_check_type_field(v); #endif if(v->type_field & (BIT_OBJECT | BIT_FUNCTION)) { for(e=0; e<v->size; e++) { if((ITEM(v)[e].type == T_OBJECT || (ITEM(v)[e].type == T_FUNCTION && ITEM(v)[e].subtype!=FUNCTION_BUILTIN)) && (!ITEM(v)[e].u.object->prog)) { free_svalue(ITEM(v)+e); ITEM(v)[e].type=T_INT; ITEM(v)[e].subtype=NUMBER_DESTRUCTED; ITEM(v)[e].u.integer=0; types |= BIT_INT; }else{ types |= 1<<ITEM(v)[e].type; } } v->type_field = types; } } /* * This function finds the index of any destructed object in a set * it could be optimized to search out the object part with a binary * search lookup if the array is mixed */ INT32 array_find_destructed_object(struct array *v) { INT32 e; TYPE_FIELD types; #ifdef DEBUG if(d_flag > 1) array_check_type_field(v); #endif if(v->type_field & (BIT_OBJECT | BIT_FUNCTION)) { types=0; for(e=0; e<v->size; e++) { if((ITEM(v)[e].type == T_OBJECT || (ITEM(v)[e].type == T_FUNCTION && ITEM(v)[e].subtype!=FUNCTION_BUILTIN)) && (!ITEM(v)[e].u.object->prog)) return e; types |= 1<<ITEM(v)[e].type; } v->type_field = types; } #ifdef DEBUG if(d_flag > 1) array_check_type_field(v); #endif return -1; } static struct svalue *current_array_p; static cmpfun current_cmpfun; static int internal_cmpfun(INT32 *a,INT32 *b) { return current_cmpfun(current_array_p + *a, current_array_p + *b); } INT32 *get_order(struct array *v, cmpfun fun) { INT32 e, *current_order; if(!v->size) return 0; current_cmpfun = fun; current_order=(INT32 *)xalloc(v->size * sizeof(INT32)); for(e=0; e<v->size; e++) current_order[e]=e; if(current_array_p) free((char *)current_array_p); current_array_p = ITEM(v); current_cmpfun = fun; fsort((char *)current_order, v->size, sizeof(INT32), (fsortfun)internal_cmpfun); current_array_p=0; return current_order; } static int set_svalue_cmpfun(struct svalue *a, struct svalue *b) { INT32 tmp; if((tmp=(a->type - b->type))) return tmp; switch(a->type) { case T_FLOAT: if(a->u.float_number < b->u.float_number) return -1; if(a->u.float_number > b->u.float_number) return 1; return 0; case T_FUNCTION: if(a->u.refs < b->u.refs) return -1; if(a->u.refs > b->u.refs) return 1; return a->subtype - b->subtype; case T_INT: if(a->u.integer < b->u.integer) return -1; if(a->u.integer > b->u.integer) return 1; return 0; default: if(a->u.refs < b->u.refs) return -1; if(a->u.refs > b->u.refs) return 1; return 0; } } static int switch_svalue_cmpfun(struct svalue *a, struct svalue *b) { if(a->type != b->type) return a->type - b->type; switch(a->type) { case T_INT: if(a->u.integer < b->u.integer) return -1; if(a->u.integer > b->u.integer) return 1; return 0; case T_FLOAT: if(a->u.float_number < b->u.float_number) return -1; if(a->u.float_number > b->u.float_number) return 1; return 0; case T_STRING: return my_strcmp(a->u.string, b->u.string); default: return set_svalue_cmpfun(a,b); } } static int alpha_svalue_cmpfun(struct svalue *a, struct svalue *b) { if(a->type == b->type) { switch(a->type) { case T_INT: if(a->u.integer < b->u.integer) return -1; if(a->u.integer > b->u.integer) return 1; return 0; case T_FLOAT: if(a->u.float_number < b->u.float_number) return -1; if(a->u.float_number > b->u.float_number) return 1; return 0; case T_STRING: return my_strcmp(a->u.string, b->u.string); case T_ARRAY: if(a==b) return 0; if(!a->u.array->size) return -1; if(!b->u.array->size) return 1; return alpha_svalue_cmpfun(ITEM(a->u.array), ITEM(b->u.array)); default: return set_svalue_cmpfun(a,b); case T_OBJECT: break; } }else{ if(a->type!=T_OBJECT && b->type!=T_OBJECT) return a->type - b->type; } return is_gt(a,b); } void sort_array_destructively(struct array *v) { if(!v->size) return; fsort((char *)ITEM(v), v->size, sizeof(struct svalue), (fsortfun)alpha_svalue_cmpfun); } /* * return an 'order' suitable for making mappings and multisets */ INT32 *get_set_order(struct array *a) { return get_order(a, set_svalue_cmpfun); } /* * return an 'order' suitable for switches. */ INT32 *get_switch_order(struct array *a) { return get_order(a, switch_svalue_cmpfun); } /* * return an 'order' suitable for sorting. */ INT32 *get_alpha_order(struct array *a) { return get_order(a, alpha_svalue_cmpfun); } static INT32 low_lookup(struct array *v, struct svalue *s, cmpfun fun) { INT32 a,b,c; int q; a=0; b=v->size; while(b > a) { c=(a+b)/2; q=fun(ITEM(v)+c,s); if(q < 0) a=c+1; else if(q > 0) b=c; else return c; } if(a<v->size && fun(ITEM(v)+a,s)<0) a++; return ~a; } INT32 set_lookup(struct array *a, struct svalue *s) { #ifdef DEBUG if(d_flag > 1) array_check_type_field(a); #endif /* face it, it's not there */ if( (((2 << s->type) -1) & a->type_field) == 0) return -1; /* face it, it's not there */ if( ((BIT_MIXED << s->type) & BIT_MIXED & a->type_field) == 0) return ~a->size; return low_lookup(a,s,set_svalue_cmpfun); } INT32 switch_lookup(struct array *a, struct svalue *s) { /* face it, it's not there */ #ifdef DEBUG if(d_flag > 1) array_check_type_field(a); #endif if( (((2 << s->type) -1) & a->type_field) == 0) return -1; /* face it, it's not there */ if( ((BIT_MIXED << s->type) & BIT_MIXED & a->type_field) == 0) return ~a->size; return low_lookup(a,s,switch_svalue_cmpfun); } /* * reorganize an array in the order specifyed by 'order' */ struct array *order_array(struct array *v, INT32 *order) { reorder((char *)ITEM(v),v->size,sizeof(struct svalue),order); return v; } /* * copy and reorganize an array */ struct array *reorder_and_copy_array(struct array *v, INT32 *order) { INT32 e; struct array *ret; ret=allocate_array_no_init(v->size, 0); ret->type_field = v->type_field; for(e=0;e<v->size;e++) assign_svalue_no_free(ITEM(ret)+e, ITEM(v)+order[e]); return ret; } /* Maybe I should have a 'clean' flag for this computation */ void array_fix_type_field(struct array *v) { int e; TYPE_FIELD t; t=0; if(v->flags & ARRAY_LVALUE) { v->type_field=BIT_MIXED; return; } for(e=0; e<v->size; e++) t |= 1 << ITEM(v)[e].type; #ifdef DEBUG if(t & ~(v->type_field)) fatal("Type field out of order!\n"); #endif v->type_field = t; } #ifdef DEBUG /* Maybe I should have a 'clean' flag for this computation */ void array_check_type_field(struct array *v) { int e; TYPE_FIELD t; t=0; if(v->flags & ARRAY_LVALUE) return; for(e=0; e<v->size; e++) { if(ITEM(v)[e].type > MAX_TYPE) fatal("Type is out of range.\n"); t |= 1 << ITEM(v)[e].type; } if(t & ~(v->type_field)) fatal("Type field out of order!\n"); } #endif struct array *compact_array(struct array *v) { return v; } /* * Get a pointer to the 'union anything' specified IF it is of the specified * type. The 'union anything' may be changed, but not the type. */ union anything *low_array_get_item_ptr(struct array *a, INT32 ind, TYPE_T t) { if(ITEM(a)[ind].type == t) return & (ITEM(a)[ind].u); return 0; } /* * Get a pointer to the 'union anything' specified IF it is of the specified * type. The 'union anything' may be changed, but not the type. * The differance between this routine and the one above is that this takes * the index as an svalue. */ union anything *array_get_item_ptr(struct array *a, struct svalue *ind, TYPE_T t) { INT32 i; if(ind->type != T_INT) error("Index is not an integer.\n"); i=ind->u.integer; if(i<0) i+=a->size; if(i<0 || i>=a->size) error("Index out of range.\n"); return low_array_get_item_ptr(a,i,t); } /* * organize an array of INT32 to specify how to zip two arrays together * to maintain the order. * the first item in this array is the size of the result * the rest is n >= 0 for a[ n ] * or n < 0 for b[ ~n ] */ INT32 * merge(struct array *a,struct array *b,INT32 opcode) { INT32 ap,bp,i,*ret,*ptr; ap=bp=0; #ifdef DEBUG if(d_flag > 1) { array_check_type_field(a); array_check_type_field(b); } #endif if(!(a->type_field & b->type_field)) { /* do smart optimizations */ switch(opcode) { case OP_AND: ret=(INT32 *)xalloc(sizeof(INT32)); *ret=0; return ret; case OP_SUB: ptr=ret=(INT32 *)xalloc(sizeof(INT32)*(a->size+1)); *(ptr++)=a->size; for(i=0;i<a->size;i++) *(ptr++)=i; return ret; } } ptr=ret=(INT32 *)xalloc(sizeof(INT32)*(a->size + b->size + 1)); ptr++; while(ap < a->size && bp < b->size) { i=set_svalue_cmpfun(ITEM(a)+ap,ITEM(b)+bp); if(i < 0) i=opcode >> 8; else if(i > 0) i=opcode; else i=opcode >> 4; if(i & OP_A) *(ptr++)=ap; if(i & OP_B) *(ptr++)=~bp; if(i & OP_SKIP_A) ap++; if(i & OP_SKIP_B) bp++; } if((opcode >> 8) & OP_A) while(ap<a->size) *(ptr++)=ap++; if(opcode & OP_B) while(bp<b->size) *(ptr++)=~(bp++); *ret=(ptr-ret-1); return ret; } /* * This routine merges two arrays in the order specified by 'zipper' * zipper normally produced by merge() above */ struct array *array_zip(struct array *a, struct array *b,INT32 *zipper) { INT32 size,e; struct array *ret; size=zipper[0]; zipper++; ret=allocate_array_no_init(size,0); for(e=0; e<size; e++) { if(*zipper >= 0) assign_svalue_no_free(ITEM(ret)+e, ITEM(a)+*zipper); else assign_svalue_no_free(ITEM(ret)+e, ITEM(b)+~*zipper); zipper++; } ret->type_field = a->type_field | b->type_field; return ret; } struct array *add_arrays(struct svalue *argp, INT32 args) { INT32 e, size; struct array *v; for(size=e=0;e<args;e++) size+=argp[e].u.array->size; if(args && argp[0].u.array->refs==1) { e=argp[0].u.array->size; v=resize_array(argp[0].u.array, size); argp[0].type=T_INT; size=e; e=1; }else{ v=allocate_array_no_init(size, 0); v->type_field=0; e=size=0; } for(; e<args; e++) { v->type_field|=argp[e].u.array->type_field; assign_svalues_no_free(ITEM(v)+size, ITEM(argp[e].u.array), argp[e].u.array->size, argp[e].u.array->type_field); size+=argp[e].u.array->size; } return v; } int array_equal_p(struct array *a, struct array *b, struct processing *p) { struct processing curr; INT32 e; if(a == b) return 1; if(a->size != b->size) return 0; if(!a->size) return 1; #ifdef DEBUG if(d_flag > 1) { array_check_type_field(a); array_check_type_field(b); } #endif /* This could be done much better if I KNEW that * the type fields didn't contain types that * really aren't in the array */ if(!(a->type_field & b->type_field) && !( (a->type_field | b->type_field) & BIT_OBJECT )) return 0; curr.pointer_a = a; curr.pointer_b = b; curr.next = p; for( ;p ;p=p->next) if(p->pointer_a == (void *)a && p->pointer_b == (void *)b) return 1; for(e=0; e<a->size; e++) if(!low_is_equal(ITEM(a)+e, ITEM(b)+e, &curr)) return 0; return 1; } static INT32 *ordera=0, *orderb=0; /* * this is used to rearrange the zipper so that the order is retained * as it was before (check merge_array_with_order below) */ static int array_merge_fun(INT32 *a, INT32 *b) { if(*a<0) { if(*b<0) { return orderb[~*a] - orderb[~*b]; }else{ return -1; } }else{ if(*b<0) { return 1; }else{ return ordera[*a] - ordera[*b]; } } } /* * merge two arrays and retain their order, this is done by arranging them * into ordered sets, merging them as sets and then rearranging the zipper * before zipping the sets together. */ struct array *merge_array_with_order(struct array *a, struct array *b,INT32 op) { INT32 *zipper; struct array *tmpa,*tmpb,*ret; if(ordera) { free((char *)ordera); ordera=0; } if(orderb) { free((char *)orderb); orderb=0; } ordera=get_set_order(a); tmpa=reorder_and_copy_array(a,ordera); orderb=get_set_order(b); tmpb=reorder_and_copy_array(b,orderb); zipper=merge(tmpa,tmpb,op); fsort((char *)(zipper+1),*zipper,sizeof(INT32),(fsortfun)array_merge_fun); free((char *)ordera); free((char *)orderb); orderb=ordera=0; ret=array_zip(tmpa,tmpb,zipper); free_array(tmpa); free_array(tmpb); free((char *)zipper); return ret; } /* merge two arrays without paying attention to the order * the elements has presently */ struct array *merge_array_without_order(struct array *a, struct array *b, INT32 op) { INT32 *zipper; struct array *tmpa,*tmpb,*ret; if(ordera) { free((char *)ordera); ordera=0; } if(orderb) { free((char *)orderb); orderb=0; } ordera=get_set_order(a); tmpa=reorder_and_copy_array(a,ordera); free((char *)ordera); ordera=0; orderb=get_set_order(b); tmpb=reorder_and_copy_array(b,orderb); free((char *)orderb); orderb=0; zipper=merge(tmpa,tmpb,op); ret=array_zip(tmpa,tmpb,zipper); free_array(tmpa); free_array(tmpb); free((char *)zipper); return ret; } /* subtract an array from another */ struct array *subtract_arrays(struct array *a, struct array *b) { #ifdef DEBUG if(d_flag > 1) { array_check_type_field(b); } #endif check_array_for_destruct(a); if(a->type_field & b->type_field) { return merge_array_with_order(a, b, OP_SUB); }else{ if(a->refs == 1) { add_ref(a); return a; } return slice_array(a,0,a->size); } } /* and two arrays */ struct array *and_arrays(struct array *a, struct array *b) { #ifdef DEBUG if(d_flag > 1) { array_check_type_field(b); } #endif check_array_for_destruct(a); if(a->type_field & b->type_field) { return merge_array_without_order(a, b, OP_AND); }else{ return allocate_array_no_init(0,0); } } int check_that_array_is_constant(struct array *a) { array_fix_type_field(a); if(a->type_field & (BIT_FUNCTION | BIT_OBJECT)) return 0; return 1; } node *make_node_from_array(struct array *a) { struct svalue s; INT32 e; array_fix_type_field(a); if(a->type_field == BIT_INT) { for(e=0; e<a->size; e++) if(ITEM(a)[e].u.integer != 0) break; if(e == a->size) { return mkefuncallnode("allocate",mkintnode(a->size)); } } if(check_that_array_is_constant(a)) { s.type=T_ARRAY; s.subtype=0; s.u.array=a; return mkconstantsvaluenode(&s); }else{ node *ret=0; for(e=0; e<a->size; e++) ret=mknode(F_ARG_LIST,ret,mksvaluenode(ITEM(a)+e)); return mkefuncallnode("aggregate",ret); } } void push_array_items(struct array *a) { check_stack(a->size); check_array_for_destruct(a); if(a->refs == 1) { MEMCPY(sp,ITEM(a),sizeof(struct svalue)*a->size); sp += a->size; a->size=0; free_array(a); }else{ assign_svalues_no_free(sp, ITEM(a), a->size, a->type_field); sp += a->size; free_array(a); } } void describe_array_low(struct array *a, struct processing *p, int indent) { INT32 e,d; indent += 2; for(e=0; e<a->size; e++) { if(e) my_strcat(",\n"); for(d=0; d<indent; d++) my_putchar(' '); describe_svalue(ITEM(a)+e,indent,p); } } void simple_describe_array(struct array *a) { char *s; init_buf(); describe_array_low(a,0,0); s=simple_free_buf(); fprintf(stderr,"({\n%s\n})\n",s); free(s); } void describe_index(struct array *a, int e, struct processing *p, int indent) { describe_svalue(ITEM(a)+e, indent, p); } void describe_array(struct array *a,struct processing *p,int indent) { struct processing doing; INT32 e; char buf[60]; if(! a->size) { my_strcat("({ })"); return; } doing.next=p; doing.pointer_a=(void *)a; for(e=0;p;e++,p=p->next) { if(p->pointer_a == (void *)a) { sprintf(buf,"@%ld",(long)e); my_strcat(buf); return; } } sprintf(buf,"({ /* %ld elements */\n",(long)a->size); my_strcat(buf); describe_array_low(a,&doing,indent); my_putchar('\n'); for(e=2; e<indent; e++) my_putchar(' '); my_strcat("})"); } struct array *aggregate_array(INT32 args) { struct array *a; a=allocate_array_no_init(args,0); MEMCPY((char *)ITEM(a),(char *)(sp-args),args*sizeof(struct svalue)); a->type_field=BIT_MIXED; sp-=args; return a; } struct array *append_array(struct array *a, struct svalue *s) { a=resize_array(a,a->size+1); array_set_index(a, a->size-1, s); return a; } struct array *explode(struct pike_string *str, struct pike_string *del) { INT32 e; struct array *ret; char *s, *end, *tmp; if(!str->len) { return allocate_array_no_init(0,0); } if(!del->len) { ret=allocate_array_no_init(str->len,0); for(e=0;e<str->len;e++) { ITEM(ret)[e].type=T_STRING; ITEM(ret)[e].u.string=make_shared_binary_string(str->str+e,1); } }else{ struct mem_searcher searcher; s=str->str; end=s+str->len; ret=allocate_array(10); ret->size=0; init_memsearch(&searcher, del->str, del->len, str->len); while((tmp=memory_search(&searcher, s, end-s))) { if(ret->size == ret->malloced_size) { e=ret->size; ret=resize_array(ret, e * 2); ret->size=e; } ITEM(ret)[ret->size].u.string=make_shared_binary_string(s, tmp-s); ITEM(ret)[ret->size].type=T_STRING; ret->size++; s=tmp+del->len; } if(ret->size == ret->malloced_size) { e=ret->size; ret=resize_array(ret, e * 2); ret->size=e; } ITEM(ret)[ret->size].u.string=make_shared_binary_string(s, end-s); ITEM(ret)[ret->size].type=T_STRING; ret->size++; } ret->type_field=BIT_STRING; return ret; } struct pike_string *implode(struct array *a,struct pike_string *del) { INT32 len,e, inited; char *r; struct pike_string *ret,*tmp; len=0; for(e=0;e<a->size;e++) if(ITEM(a)[e].type==T_STRING) len+=ITEM(a)[e].u.string->len + del->len; if(len) len-=del->len; ret=begin_shared_string(len); r=ret->str; inited=0; for(e=0;e<a->size;e++) { if(ITEM(a)[e].type==T_STRING) { if(inited) { MEMCPY(r,del->str,del->len); r+=del->len; } inited=1; tmp=ITEM(a)[e].u.string; MEMCPY(r,tmp->str,tmp->len); r+=tmp->len; len++; } } return end_shared_string(ret); } struct array *copy_array_recursively(struct array *a,struct processing *p) { struct processing doing; struct array *ret; #ifdef DEBUG if(d_flag > 1) array_check_type_field(a); #endif doing.next=p; doing.pointer_a=(void *)a; for(;p;p=p->next) { if(p->pointer_a == (void *)a) { ret=(struct array *)p->pointer_b; add_ref(ret); return ret; } } ret=allocate_array_no_init(a->size,0); doing.pointer_b=(void *)ret; copy_svalues_recursively_no_free(ITEM(ret),ITEM(a),a->size,&doing); ret->type_field=a->type_field; return ret; } void apply_array(struct array *a, INT32 args) { INT32 e; struct array *ret; INT32 argp; argp=sp-args - evaluator_stack; check_stack(a->size + args + 1); for(e=0;e<a->size;e++) { assign_svalues_no_free(sp,evaluator_stack+argp,args,BIT_MIXED); sp+=args; apply_svalue(ITEM(a)+e,args); } ret=aggregate_array(a->size); pop_n_elems(args); push_array(ret); } struct array *reverse_array(struct array *a) { INT32 e; struct array *ret; /* FIXME: Check refs so we might optimize */ ret=allocate_array_no_init(a->size,0); for(e=0;e<a->size;e++) assign_svalue_no_free(ITEM(ret)+e,ITEM(a)+a->size+~e); return ret; } void array_replace(struct array *a, struct svalue *from, struct svalue *to) { INT32 i = -1; while((i=array_search(a,from,i+1)) >= 0) array_set_index(a,i,to); } #ifdef DEBUG void check_array(struct array *a) { INT32 e; if(a->next->prev != a) fatal("Array check: a->next->prev != a\n"); if(a->size > a->malloced_size) fatal("Array is larger than malloced block!\n"); if(a->refs <=0 ) fatal("Array has zero refs.\n"); for(e=0;e<a->size;e++) { if(! ( (1 << ITEM(a)[e].type) & (a->type_field) )) fatal("Type field lies.\n"); check_svalue(ITEM(a)+e); } } void check_all_arrays(void) { struct array *a; a=&empty_array; do { check_array(a); a=a->next; if(!a) fatal("Null pointer in array list.\n"); } while (a != & empty_array); } #endif /* DEBUG */ void gc_mark_array_as_referenced(struct array *a) { if(gc_mark(a)) if(a->type_field & BIT_COMPLEX) gc_mark_svalues(ITEM(a), a->size); } void gc_check_all_arrays(void) { struct array *a; a=&empty_array; do { #ifdef DEBUG if(d_flag > 1) array_check_type_field(a); #endif if(a->type_field & BIT_COMPLEX) { TYPE_FIELD t; t=debug_gc_check_svalues(ITEM(a), a->size, T_ARRAY, a); /* Ugly, but we are not allowed to change type_field * at the same time as the array is being built... * Actually we just need beter primitives for building arrays. */ if(!(a->type_field & BIT_UNFINISHED) || a->refs!=1) a->type_field = t; else a->type_field |= t; } a=a->next; } while (a != & empty_array); } void gc_mark_all_arrays(void) { struct array *a; a=&empty_array; do { if(gc_is_referenced(a)) gc_mark_array_as_referenced(a); a=a->next; } while (a != & empty_array); } void gc_free_all_unreferenced_arrays(void) { struct array *a,*next; a=&empty_array; do { if(gc_do_free(a)) { add_ref(a); free_svalues(ITEM(a), a->size, a->type_field); a->size=0; if(!(next=a->next)) fatal("Null pointer in array list.\n"); free_array(a); a=next; }else{ a=a->next; } } while (a != & empty_array); } #ifdef DEBUG void debug_dump_type_field(TYPE_FIELD t) { int e; for(e=0;e<=MAX_TYPE;e++) if(t & (1<<e)) fprintf(stderr," %s",get_name_of_type(e)); for(;e<16;e++) if(t & (1<<e)) fprintf(stderr," <%d>",e); } void debug_dump_array(struct array *a) { fprintf(stderr,"Location=%p Refs=%d, next=%p, prev=%p, size=%d, malloced_size=%d\n", a, a->refs, a->next, a->prev, a->size, a->malloced_size); fprintf(stderr,"Type field = "); debug_dump_type_field(a->type_field); fprintf(stderr,"\n"); simple_describe_array(a); } #endif void zap_all_arrays(void) { struct array *a,*next; a=&empty_array; do { #if defined(DEBUG) && defined(DEBUG_MALLOC) if(verbose_debug_exit && a!=&empty_array) describe(a); #endif add_ref(a); free_svalues(ITEM(a), a->size, a->type_field); a->size=0; if(!(next=a->next)) fatal("Null pointer in array list.\n"); free_array(a); a=next; } while (a != & empty_array); } void count_memory_in_arrays(INT32 *num_, INT32 *size_) { INT32 num=0, size=0; struct array *m; for(m=empty_array.next;m!=&empty_array;m=m->next) { num++; size+=sizeof(struct array)+ sizeof(struct svalue) * (m->malloced_size - 1); } *num_=num; *size_=size; } struct array *explode_array(struct array *a, struct array *b) { INT32 e,d,q,start; struct array *tmp; q=start=0; if(!a->size) { return allocate_array_no_init(0,0); } if(b->size) { for(e=0;e<=a->size - b->size;e++) { for(d=0;d<b->size;d++) { if(!is_eq(ITEM(a)+(e+d),ITEM(b)+d)) break; } if(d==b->size) { check_stack(1); push_array(friendly_slice_array(a, start, e)); q++; e+=b->size-1; start=e+1; } } check_stack(1); push_array(friendly_slice_array(a, start, a->size)); q++; }else{ check_stack(a->size); for(e=0;e<a->size;e++) push_array(friendly_slice_array(a, e, e+1)); q=a->size; } tmp=aggregate_array(q); if(tmp->size) tmp->type_field=BIT_ARRAY; return tmp; } struct array *implode_array(struct array *a, struct array *b) { INT32 e,size; struct array *ret; size=0; for(e=0;e<a->size;e++) { if(ITEM(a)[e].type!=T_ARRAY) error("Implode array contains non-arrays.\n"); size+=ITEM(a)[e].u.array->size; } ret=allocate_array((a->size -1) * b->size + size); size=0; ret->type_field=0; for(e=0;e<a->size;e++) { if(e) { ret->type_field|=b->type_field; assign_svalues_no_free(ITEM(ret)+size, ITEM(b), b->size, b->type_field); size+=b->size; } ret->type_field|=ITEM(a)[e].u.array->type_field; assign_svalues_no_free(ITEM(ret)+size, ITEM(ITEM(a)[e].u.array), ITEM(a)[e].u.array->size, ITEM(a)[e].u.array->type_field); size+=ITEM(a)[e].u.array->size; } #ifdef DEBUG if(size != ret->size) fatal("Implode_array failed miserably\n"); #endif return ret; }

pike.git/ src/ array.c > 73a2a132594f4e1a30ae594132cf3cd3f6231035 [Annotate]