pike.git/src/array.c:eba9e2848f61f68f52f5e8c2e00119ffbe448f45

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1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 #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 "lpc_types.h" #include "fsort.h" #include "builtin_efuns.h" struct array empty_array= { 1, /* Never free */ &empty_array, /* Next */ &empty_array, /* previous (circular) */ 0, /* Size = 0 */ 0, /* malloced Size = 0 */ 0, /* no types */ T_MIXED, /* mixed array */ 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 *allocate_array_no_init(INT32 size,INT32 extra_space,TYPE_T type) { struct array *v; if(size == 0 && type == T_MIXED) { empty_array.refs++; return &empty_array; } if(type == T_FUNCTION || type == T_MIXED) { v=(struct array *)malloc(sizeof(struct array_of_svalues)+ (size+extra_space-1)*sizeof(struct svalue)); if(!v) error("Couldn't allocate array, out of memory.\n"); v->array_type=T_MIXED; /* for now, we don't know what will go in here */ v->type_field=BIT_MIXED; }else{ v=(struct array *)malloc(sizeof(struct array_of_short_svalues)+ (size+extra_space-1)*sizeof(union anything)); if(!v) error("Couldn't allocate array, out of memory.\n"); v->array_type=type; /* This array can only contain zeros and 'type' */ v->type_field=BIT_INT | (1 << type); } v->malloced_size=size+extra_space; v->size=size; v->flags=0; v->refs=1; v->prev=&empty_array; v->next=empty_array.next; empty_array.next=v; v->next->prev=v; return v; } struct array *allocate_array(INT32 size,TYPE_T type) { INT32 e; struct array *a; a=allocate_array_no_init(size,0,type); if(a->array_type==T_MIXED) { for(e=0;e<a->size;e++) { ITEM(a)[e].type=T_INT; ITEM(a)[e].subtype=NUMBER_NUMBER; ITEM(a)[e].u.integer=0; } }else{ MEMSET((char *)SHORT_ITEM(a),0,sizeof(union anything)*a->size); } return a; } /* * 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); } /* * 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 if(v->array_type == T_MIXED) { free_svalues(ITEM(v), v->size); }else{ free_short_svalues(SHORT_ITEM(v), v->size, v->array_type); } array_free_no_free(v); } /* * 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 if(v->array_type == T_MIXED) { assign_svalue_no_free(s, ITEM(v) + index); }else{ assign_from_short_svalue_no_free(s, SHORT_ITEM(v) + index, v->array_type); } } /* * 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 v->refs++; if(v->array_type == T_MIXED) { assign_svalue(s, ITEM(v) + index); }else{ free_svalue(s); assign_from_short_svalue_no_free(s, SHORT_ITEM(v) + index, v->array_type); } free_array(v); } void simple_array_index(struct svalue *s,struct array *a,struct svalue *ind) { 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_index(s,a,i); } void simple_array_index_no_free(struct svalue *s,struct array *a,struct svalue *ind) { 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_index_no_free(s,a,i); } /* * 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 if(v->array_type == T_MIXED) { free_svalue(ITEM(v) + index); }else{ free_short_svalue(SHORT_ITEM(v) + index, v->array_type); } } /* * 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 v->refs++; check_destructed(s); if(v->array_type == T_MIXED) { v->type_field |= 1 << s->type; assign_svalue( ITEM(v) + index, s); }else if(IS_ZERO(s)){ v->type_field |= BIT_INT; SHORT_ITEM(v)[index].refs=0; }else if(v->array_type == s->type){ assign_to_short_svalue( SHORT_ITEM(v)+index, v->array_type, s); }else{ free_array(v); error("Wrong type in array assignment (%s != %s)\n", get_name_of_type(v->array_type), get_name_of_type(s->type)); } 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) { if(v->array_type == T_MIXED) { MEMMOVE((char *)(ITEM(v)+index+1), (char *)(ITEM(v)+index), (v->size-index) * sizeof(struct svalue)); ITEM(v)[index].type=T_INT; }else{ MEMMOVE((char *)(SHORT_ITEM(v)+index+1), (char *)(SHORT_ITEM(v)+index), (v->size-index) * sizeof(union anything)); SHORT_ITEM(v)[index].refs=0; } v->size++; }else{ struct array *ret; ret=allocate_array_no_init(v->size+1, (v->size >> 3) + 1, v->array_type); ret->type_field = v->type_field; if(v->array_type == T_MIXED) { 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; }else{ MEMCPY(SHORT_ITEM(ret), SHORT_ITEM(v), sizeof(union anything) * index); MEMCPY(SHORT_ITEM(ret)+index+1, SHORT_ITEM(v)+index, sizeof(union anything) * (v->size-index)); SHORT_ITEM(ret)[index].refs=0; } v->size=0; free_array(v); v=ret; } array_set_index(v,index,s); return v; } /* * resize array, resize an array destructively */ static struct array *resize_array(struct array *a, INT32 size) { if(a->size == size) return a; if(size > a->size) { /* We should grow the array */ if(a->malloced_size >= size) { if(a->array_type == T_MIXED) { 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; } }else{ MEMSET(SHORT_ITEM(a)+a->size, 0, sizeof(union anything)*(size-a->size)); a->size=size; } return a; }else{ struct array *ret; ret=allocate_array_no_init(size, (size>>3)+1, a->array_type); if(a->array_type == T_MIXED) { MEMCPY(ITEM(ret),ITEM(a),sizeof(struct svalue)*a->size); }else{ MEMCPY(SHORT_ITEM(ret),SHORT_ITEM(a),sizeof(union anything)*a->size); } a->size=0; free_array(a); return ret; } }else{ /* We should shrink the array */ if(a->array_type == T_MIXED) { free_svalues(ITEM(a)+size, a->size - size); }else{ free_short_svalues(SHORT_ITEM(a)+size, a->size - size, a->array_type); } 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,v->array_type); a->type_field = v->type_field; if(v->array_type == T_MIXED) { free_svalues(ITEM(v) + size, v->size - size); MEMCPY(ITEM(a), ITEM(v), size*sizeof(struct svalue)); }else{ free_short_svalues(SHORT_ITEM(v) + size, v->size - size, v->array_type); MEMCPY(ITEM(a), ITEM(v), size*sizeof(union anything)); } v->size=0; free_array(v); return a; }else{ if(v->array_type == T_MIXED) { free_svalues(ITEM(v) + size, v->size - size); }else{ free_short_svalues(SHORT_ITEM(v) + size, v->size - size, v->array_type); } 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, v->array_type); a->type_field = v->type_field; if(v->array_type == T_MIXED) { 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)); }else{ if(index>0) MEMCPY(SHORT_ITEM(a), SHORT_ITEM(v), index*sizeof(struct svalue)); if(v->size-index>1) MEMCPY(SHORT_ITEM(a)+index, SHORT_ITEM(v)+index+1, (v->size-index-1)*sizeof(union anything)); } v->size=0; free_array(v); return a; }else{ if(v->size-index>1) { if(v->array_type == T_MIXED) { MEMMOVE((char *)(ITEM(v)+index), (char *)(ITEM(v)+index+1), (v->size-index-1)*sizeof(struct svalue)); }else{ MEMMOVE((char *)(SHORT_ITEM(v)+index), (char *)(SHORT_ITEM(v)+index+1), (v->size-index-1)*sizeof(union anything)); } } 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); if(v->type_field & (1 << s->type)) /* Why search for something that is not there? */ { if(v->array_type == T_MIXED) { TYPE_FIELD t=0; for(e=start;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; }else{ if(v->array_type == T_FLOAT) { if(s->type == T_FLOAT) for(e=start;e<v->size;e++) if(SHORT_ITEM(v)[e].float_number == s->u.float_number) return e; return -1; } if(v->array_type == s->type) { for(e=start;e<v->size;e++) if(SHORT_ITEM(v)[e].refs == s->u.refs) return e; return -1; } if(IS_ZERO(s)) for(e=start;e<v->size;e++) if(!SHORT_ITEM(v)[e].refs) return e; return -1; } } 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"); #endif if(start==0 && v->refs==1) /* Can we use the same array? */ { v->refs++; return array_shrink(v,end); } a=allocate_array_no_init(end-start,0,v->array_type); a->type_field = v->type_field; if(v->array_type == T_MIXED) { assign_svalues_no_free(ITEM(a), ITEM(v)+start, end-start); }else{ assign_short_svalues_no_free(SHORT_ITEM(a), SHORT_ITEM(v)+start, v->array_type, end-start); } return a; } /* * Copy an array */ struct array *copy_array(struct array *v) { struct array *a; a=allocate_array_no_init(v->size, 0, v->array_type); a->type_field = v->type_field; if(v->array_type == T_MIXED) { assign_svalues_no_free(ITEM(a), ITEM(v), v->size); }else{ assign_short_svalues_no_free(SHORT_ITEM(a), SHORT_ITEM(v), v->array_type, v->size); } return a; } /* * Clean an array from destructed objects */ void check_array_for_destruct(struct array *v) { int e; INT16 types; types = 0; if(v->type_field & (BIT_OBJECT | BIT_FUNCTION)) { if(v->array_type == T_MIXED) { for(e=0; e<v->size; e++) { if((ITEM(v)[e].type == T_OBJECT || (ITEM(v)[e].type == T_FUNCTION && ITEM(v)[e].subtype!=-1)) && (!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; } } }else{ for(e=0; e<v->size; e++) { if(!SHORT_ITEM(v)[e].object) { types |= BIT_INT; } else if(!SHORT_ITEM(v)[e].object->prog) { free_short_svalue(SHORT_ITEM(v)+e,v->array_type); SHORT_ITEM(v)[e].refs=0; types |= BIT_INT; } } } 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; if(v->type_field & (BIT_OBJECT | BIT_FUNCTION)) { if(v->array_type == T_MIXED) { 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!=-1)) && (!ITEM(v)[e].u.object->prog)) return e; types |= 1<<ITEM(v)[e].type; } }else{ types=1<<(v->array_type); for(e=0; e<v->size; e++) { if(SHORT_ITEM(v)[e].object) { if(!SHORT_ITEM(v)[e].object->prog) return e; }else{ types |= BIT_INT; } } } v->type_field = types; } return -1; } static short_cmpfun current_short_cmpfun; static union anything *current_short_array_p; static int internal_short_cmpfun(INT32 *a,INT32 *b) { return current_short_cmpfun(current_short_array_p + *a, current_short_array_p + *b); } 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,cmpfun_getter backfun) { 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(v->array_type == T_MIXED) { current_array_p = ITEM(v); current_cmpfun = fun; fsort((char *)current_order, v->size, sizeof(INT32), (fsortfun)internal_cmpfun); }else{ current_short_array_p = SHORT_ITEM(v); current_short_cmpfun = backfun(v->array_type); fsort((char *)current_order, v->size, sizeof(INT32), (fsortfun)internal_short_cmpfun); } return current_order; } static int set_svalue_cmpfun(struct svalue *a, struct svalue *b) { INT32 tmp; if(tmp=(a->type - b->type)) return tmp; #ifdef NORMALIZED_FLOATS if(tmp=(a->u.integer - b->u.integer)) return tmp; if(a->type == T_FUNCTION ) return a->subtype - b->subtype; return 0; #else 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(tmp=(a->u.integer - b->u.integer)) return tmp; return a->subtype - b->subtype; default: return a->u.integer - b->u.integer; } #endif } static int set_anything_cmpfun(union anything *a, union anything *b) { return a->integer - b->integer; } static int set_anything_cmpfun_float(union anything *a, union anything *b) { if(a->float_number < b->float_number) return -1; if(a->float_number > b->float_number) return 1; return 0; } #ifdef NORMALIZED_FLOATS static short_cmpfun get_set_cmpfun(TYPE_T t) { return set_anything_cmpfun; } #else static short_cmpfun get_set_cmpfun(TYPE_T t) { if(t == T_FLOAT) return set_anything_cmpfun_float; return set_anything_cmpfun; } #endif static int switch_anything_cmpfun_string(union anything *a, union anything *b) { return my_strcmp(a->string, b->string); } static short_cmpfun get_switch_cmpfun(TYPE_T t) { switch(t) { case T_INT: return set_anything_cmpfun; case T_FLOAT: return set_anything_cmpfun_float; case T_STRING: return switch_anything_cmpfun_string; default: error("Illegal type in switch.\n"); return 0; /* Make apcc happy */ } } 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: return a->u.integer - b->u.integer; 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); } } /* * return an 'order' suitable for making mappings, lists other sets */ INT32 *get_set_order(struct array *a) { return get_order(a, set_svalue_cmpfun, get_set_cmpfun); } /* * return an 'order' suitable for switches. */ INT32 *get_switch_order(struct array *a) { return get_order(a, switch_svalue_cmpfun, get_switch_cmpfun); } static INT32 low_lookup(struct array *v, struct svalue *s, cmpfun fun, cmpfun_getter backfun) { INT32 a,b,c; int q; if(v->array_type == T_MIXED) { 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; }else if(s->type == v->array_type){ short_cmpfun fun; fun=backfun(s->type); a=0; b=v->size; while(b > a) { c=(a+b)/2; q=fun(SHORT_ITEM(v)+c,&s->u); if(q < 0) a=c+1; else if(q > 0) b=c; else return c; } if(a<v->size && fun(SHORT_ITEM(v)+a,&s->u)<0) a++; return ~a; }else{ /* face it, it's not there */ if(s->type < v->array_type) return -1; return ~v->size; } } INT32 set_lookup(struct array *a, struct svalue *s) { return low_lookup(a,s,set_svalue_cmpfun,get_set_cmpfun); } INT32 switch_lookup(struct array *a, struct svalue *s) { return low_lookup(a,s,switch_svalue_cmpfun,get_switch_cmpfun); } /* * reorganize an array in the order specifyed by 'order' */ struct array *order_array(struct array *v, INT32 *order) { if(v->array_type == T_MIXED) reorder((char *)ITEM(v),v->size,sizeof(struct svalue),order); else reorder((char *)SHORT_ITEM(v),v->size,sizeof(union anything),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, v->array_type); ret->type_field = v->type_field; if(v->array_type == T_MIXED) { for(e=0;e<v->size;e++) assign_svalue_no_free(ITEM(ret)+e, ITEM(v)+order[e]); }else{ for(e=0;e<v->size;e++) assign_short_svalue_no_free(SHORT_ITEM(ret)+e, SHORT_ITEM(v)+order[e], v->array_type); } 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; switch(v->array_type) { case T_MIXED: for(e=0; e<v->size; e++) t |= 1 << ITEM(v)[e].type; break; case T_INT: case T_FLOAT: t=1 << v->array_type; break; default: v->type_field=1 << v->array_type; for(e=0; e<v->size; e++) { if(! SHORT_ITEM(v)[e].refs) { t |= 1 << T_INT; break; } } } v->type_field = t; } /* * Replace a large array with a small one if possible */ struct array *compact_array(struct array *v) { INT32 e; struct array *ret; if(v->array_type != T_MIXED) return v; if(!v->size) return v; /* won't become smaller */ array_fix_type_field(v); switch(v->type_field) { case BIT_INT | BIT_STRING: case BIT_INT | BIT_ARRAY: case BIT_INT | BIT_MAPPING: case BIT_INT | BIT_LIST: case BIT_INT | BIT_OBJECT: case BIT_INT | BIT_PROGRAM: for(e=0; e<v->size; e++) if(ITEM(v)[e].type == T_INT) if(ITEM(v)[e].u.integer != 0) return v; case BIT_INT: case BIT_FLOAT: case BIT_STRING: case BIT_ARRAY: case BIT_MAPPING: case BIT_LIST: case BIT_OBJECT: case BIT_PROGRAM: ret=allocate_array_no_init(v->size, 0, ITEM(v)[0].type); for(e=0; e<v->size; e++) assign_to_short_svalue_no_free(SHORT_ITEM(ret)+e, ITEM(v)[e].type, ITEM(v)+e); free_array(v); return ret; default: 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(a->array_type == T_MIXED) { if(ITEM(a)[ind].type == t) return & (ITEM(a)[ind].u); }else if(a->array_type == t){ return SHORT_ITEM(a)+ind; } 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; 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++; if(a->array_type == T_MIXED && b->array_type == T_MIXED) { 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++; } }else if(a->array_type == b->array_type) { short_cmpfun short_alist_cmp; short_alist_cmp=get_set_cmpfun(a->array_type); while(ap < a->size && bp < b->size) { i=short_alist_cmp(SHORT_ITEM(a)+ap,SHORT_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++; } }else{ struct svalue sa,sb; while(ap < a->size && bp < b->size) { if(a->array_type == T_MIXED) { sa=ITEM(a)[ap]; }else{ sa.u = SHORT_ITEM(a)[ap]; if(!sa.u.refs ) { if( (sa.type=a->array_type) != T_FLOAT) sa.type=T_INT; }else{ sa.type=a->array_type; } } if(b->array_type == T_MIXED) { sb=ITEM(b)[bp]; }else{ sb.u=SHORT_ITEM(b)[bp]; if(!sb.u.refs) { if( (sb.type=b->array_type) != T_FLOAT) sb.type=T_INT; }else{ sb.type=b->array_type; } } i=set_svalue_cmpfun(&sa, &sb); 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++; if(a->array_type == T_MIXED && b->array_type == T_MIXED) { ret=allocate_array_no_init(size,0, T_MIXED); 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++; } }else if(a->array_type == b->array_type) { ret=allocate_array_no_init(size, 0, a->array_type); for(e=0; e<size; e++) { if(*zipper >= 0) { assign_short_svalue_no_free(SHORT_ITEM(ret)+e, SHORT_ITEM(a)+*zipper, a->array_type); }else{ assign_short_svalue_no_free(SHORT_ITEM(ret)+e, SHORT_ITEM(b)+~*zipper, b->array_type); } zipper++; } }else{ ret=allocate_array_no_init(size, 0, T_MIXED); for(e=0; e<size; e++) { if(*zipper >= 0) { if(a->array_type == T_MIXED) { assign_svalue_no_free(ITEM(ret)+e, ITEM(a)+*zipper); }else{ assign_from_short_svalue_no_free(ITEM(ret)+e, SHORT_ITEM(a)+*zipper, a->array_type); } }else{ if(b->array_type == T_MIXED) { assign_svalue(ITEM(ret)+e, ITEM(a)+*zipper); }else{ assign_from_short_svalue_no_free(ITEM(ret)+e, SHORT_ITEM(b)+~*zipper, b->array_type); } } 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; TYPE_T array_type; array_type=args ? argp[0].u.array->array_type : T_MIXED; for(size=e=0; e<args; e++) { check_array_for_destruct(argp[e].u.array); size+=argp[e].u.array->size; if(array_type != argp[e].u.array->array_type) array_type=T_MIXED; } if(args && argp[0].u.array->refs==1 && argp[0].u.array->array_type == array_type) { 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, array_type); v->type_field=0; e=size=0; } if(array_type == T_MIXED) { for(; e<args; e++) { v->type_field|=argp[e].u.array->type_field; if(argp[e].u.array->array_type == T_MIXED) { assign_svalues_no_free(ITEM(v)+size, ITEM(argp[e].u.array), argp[e].u.array->size); }else{ assign_from_short_svalues_no_free(ITEM(v)+size, SHORT_ITEM(argp[e].u.array), argp[e].u.array->array_type, argp[e].u.array->size); } size+=argp[e].u.array->size; } }else{ for(;e<args;e++) { v->type_field |= argp[e].u.array->type_field; assign_short_svalues_no_free(SHORT_ITEM(v)+size, SHORT_ITEM(argp[e].u.array), argp[e].u.array->array_type, argp[e].u.array->size); 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; 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; if(a->array_type == T_MIXED && b->array_type==T_MIXED) { for(e=0; e<a->size; e++) if(!low_is_equal(ITEM(a)+e, ITEM(b)+e, &curr)) return 0; }else{ for(e=0; e<a->size; e++) { struct svalue sa,sb; if(a->array_type == T_MIXED) { sa=ITEM(a)[e]; }else{ sa.u=SHORT_ITEM(a)[e]; if(!sa.u.refs) { if( (sa.type=a->array_type) != T_FLOAT) sa.type=T_INT; }else{ sa.type=a->array_type; } } if(b->array_type == T_MIXED) { sb=ITEM(b)[e]; }else{ sb.u=SHORT_ITEM(b)[e]; if(!sb.u.refs) { if( (sb.type=b->array_type) != T_FLOAT) sb.type=T_INT; }else{ sb.type=b->array_type; } } if(!low_is_equal(&sa, &sb, &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) { if(a->type_field & b->type_field) { return merge_array_with_order(a, b, OP_SUB); }else{ if(a->refs == 1) { a->refs++; return a; } return slice_array(a,0,a->size); } } /* and two arrays */ struct array *and_arrays(struct array *a, struct array *b) { if(a->type_field & b->type_field) { return merge_array_without_order(a, b, OP_AND); }else{ return allocate_array_no_init(0,0,T_MIXED); } } int check_that_array_is_constant(struct array *a) { array_fix_type_field(a); if(a->type_field & ((1 << T_FUNCTION) | (1 << T_OBJECT))) return 0; return 1; } node *make_node_from_array(struct array *a) { struct svalue s; char *str; INT32 e; array_fix_type_field(a); if(a->type_field == (1 << T_INT)) { if(a->array_type == T_MIXED) { for(e=0; e<a->size; e++) if(ITEM(a)[e].u.integer != 0) break; if(e == a->size) { return mkefuncallnode("allocate", mknode(F_ARG_LIST, mkintnode(a->size), mkstrnode(make_shared_string("mixed")) )); } }else{ e=a->size; switch(a->array_type) { case T_INT: str="int"; for(e=0; e<a->size; e++) if(SHORT_ITEM(a)[e].integer != 0) break; break; case T_FLOAT: str="float"; break; case T_STRING: str="string"; break; case T_ARRAY: str="array"; break; case T_LIST: str="list"; break; case T_MAPPING: str="mapping"; break; case T_OBJECT: str="object"; break; case T_FUNCTION: str="function"; break; case T_PROGRAM: str="program"; break; default: str="mixed"; } if(e==a->size) { return mkefuncallnode("allocate", mknode(F_ARG_LIST, mkintnode(a->size), mkstrnode(make_shared_string(str)) )); } } } 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; if(a->array_type == T_MIXED) { for(e=0; e<a->size; e++) ret=mknode(F_ARG_LIST,ret,mksvaluenode(ITEM(a)+e)); }else{ s.type=a->array_type; s.subtype=0; for(e=0; e<a->size; e++) { s.u=SHORT_ITEM(a)[e]; if(s.u.refs) { ret=mknode(F_ARG_LIST,ret,mksvaluenode(&s)); }else{ ret=mknode(F_ARG_LIST,ret,mkintnode(0)); } } } return mkefuncallnode("aggregate",ret); } } void push_array_items(struct array *a) { if(sp + a->size >= &evaluator_stack[EVALUATOR_STACK_SIZE]) error("Array does not fit on stack.\n"); check_array_for_destruct(a); if(a->array_type == T_MIXED) { if(a->refs == 1) { MEMCPY(sp,ITEM(a),sizeof(struct svalue)*a->size); sp += a->size; a->size=0; free_array(a); return; }else{ assign_svalues_no_free(sp, ITEM(a), a->size); } }else{ assign_from_short_svalues_no_free(sp, SHORT_ITEM(a), a->array_type, a->size); } sp += a->size; free_array(a); } void describe_array_low(struct array *a, struct processing *p, int indent) { INT32 e,d; indent += 2; if(a->array_type == T_MIXED) { 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); } }else{ struct svalue s; for(e=0; e<a->size; e++) { if(e) my_strcat(",\n"); for(d=0; d<indent; d++) my_putchar(' '); if(SHORT_ITEM(a)[e].refs) { s.type=a->array_type; s.u=SHORT_ITEM(a)[e]; }else{ s.type=T_INT; s.subtype=NUMBER_NUMBER; s.u.integer=0; } describe_svalue(&s, 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) { if(a->array_type == T_MIXED) { describe_svalue(ITEM(a)+e, indent, p); }else{ struct svalue s; if(SHORT_ITEM(a)[e].refs) { s.type=a->array_type; s.u=SHORT_ITEM(a)[e]; }else{ s.type=T_INT; s.subtype=NUMBER_NUMBER; s.u.integer=0; } describe_svalue(&s, indent, p); } } void describe_array(struct array *a,struct processing *p,int indent) { struct processing doing; INT32 e; char buf[40]; 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",e); my_strcat(buf); return; } } sprintf(buf,"({ /* %ld elements */\n",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, TYPE_T type) { struct array *a; a=allocate_array_no_init(args,0,type); if(type == T_MIXED) { MEMCPY((char *)ITEM(a),(char *)(sp-args),args*sizeof(struct svalue)); a->type_field=BIT_MIXED; sp-=args; }else{ struct svalue *save_sp; save_sp=sp; while(--args >= 0) { sp--; if(sp->type == type) { SHORT_ITEM(a)[args].refs = sp->u.refs; }else if(IS_ZERO(sp)){ SHORT_ITEM(a)[args].refs = 0; }else{ sp=save_sp; array_free_no_free(a); error("Bad type when constructing array.\n"); } } } return a; } struct array *explode(struct lpc_string *str, struct lpc_string *del) { INT32 e,d; struct array *ret; char *s, *end, *tmp; if(!del->len) { ret=allocate_array_no_init(str->len,0,T_STRING); ret->type_field |= 1<<T_STRING; for(e=0;e<str->len;e++) SHORT_ITEM(ret)[e].string=make_shared_binary_string(str->str+e,1); }else{ s=str->str; end=s+str->len; e=0; while((s=MEMMEM(del->str, del->len, s, end-s))) { s+=del->len; e++; } ret=allocate_array_no_init(e+1,0,T_STRING); ret->type_field |= 1<<T_STRING; s=str->str; for(d=0;d<e;d++) { tmp=MEMMEM((char *)(del->str), del->len, (char *)s, end-s); SHORT_ITEM(ret)[d].string=make_shared_binary_string(s,tmp-s); s=tmp+del->len; } SHORT_ITEM(ret)[d].string=make_shared_binary_string(s,end-s); } return ret; } struct lpc_string *implode(struct array *a,struct lpc_string *del) { INT32 len,e, inited; char *r; struct lpc_string *ret,*tmp; len=0; if(a->array_type==T_STRING) { for(e=0;e<a->size;e++) if(SHORT_ITEM(a)[e].string) len+=SHORT_ITEM(a)[e].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(SHORT_ITEM(a)[e].string) { if(inited) { MEMCPY(r,del->str,del->len); r+=del->len; } inited=1; tmp=SHORT_ITEM(a)[e].string; MEMCPY(r,tmp->str,tmp->len); r+=tmp->len; len++; } } return end_shared_string(ret); } if(a->array_type==T_MIXED) { 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); } return make_shared_string(""); } struct array *copy_array_recursively(struct array *a,struct processing *p) { struct processing doing; struct array *ret; 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; ret->refs++; return ret; } } ret=allocate_array_no_init(a->size,0,a->array_type); doing.pointer_b=(void *)ret; if(a->array_type == T_MIXED) { copy_svalues_recursively_no_free(ITEM(ret),ITEM(a),a->size,&doing); }else{ copy_short_svalues_recursively_no_free(SHORT_ITEM(ret), SHORT_ITEM(a), a->array_type, a->size,&doing); } return ret; } void apply_array(struct array *a, INT32 args) { struct svalue *argp; INT32 e; struct array *ret; ret=allocate_array_no_init(a->size,0,T_MIXED); ret->type_field=BIT_MIXED; argp=sp-args; if(a->array_type == T_MIXED) { for(e=0;e<a->size;e++) { assign_svalues_no_free(sp,argp,args); sp+=args; apply_svalue(ITEM(a)+e,args); ITEM(ret)[e]=sp[-1]; sp--; } }else{ for(e=0;e<a->size;e++) { array_index_no_free(sp++,a,e); assign_svalues_no_free(sp,argp,args); sp+=args; f_call_function(args+1); ITEM(ret)[e]=sp[-1]; sp--; } } pop_n_elems(args); push_array(ret); } struct array *reverse_array(struct array *a) { INT32 e; struct array *ret; ret=allocate_array_no_init(a->size,0,a->array_type); if(a->array_type == T_MIXED) { for(e=0;e<a->size;e++) assign_svalue_no_free(ITEM(ret)+e,ITEM(a)+a->size+~e); }else{ for(e=0;e<a->size;e++) assign_short_svalue_no_free(SHORT_ITEM(ret)+e, SHORT_ITEM(a)+a->size+~e, a->array_type); } 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, int pass) { INT32 e; if(pass) { e=checked((void *)a,0); if(e!=a->refs) { simple_describe_array(a); fatal("Above array has wrong number of references. (%ld != %ld)\n", (long)e,(long)a->refs); } return; } 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"); if(a->array_type == T_MIXED) { 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); } } else if(a->array_type <= MAX_TYPE) { if(a->type_field & ~(BIT_INT | (1<<a->array_type))) fatal("Type field in short array lies!\n"); for(e=0;e<a->size;e++) check_short_svalue(SHORT_ITEM(a)+e,a->array_type); } else { fatal("Array type out of range.\n"); } } void check_all_arrays(int pass) { struct array *a; a=&empty_array; do { check_array(a, pass); a=a->next; if(!a) fatal("Null pointer in array list.\n"); } while (a != & empty_array); if(!pass) { checked((void *)&empty_array,1); } } #endif

pike.git/ src/ array.c > eba9e2848f61f68f52f5e8c2e00119ffbe448f45 [Annotate]