1 /* 2 * List definitions. 3 */ 4 #define ql_head(a_type) \ 5 struct { \ 6 a_type *qlh_first; \ 7 } 8 9 #define ql_head_initializer(a_head) {NULL} 10 11 #define ql_elm(a_type) qr(a_type) 12 13 /* List functions. */ 14 #define ql_new(a_head) do { \ 15 (a_head)->qlh_first = NULL; \ 16 } while (0) 17 18 #define ql_elm_new(a_elm, a_field) qr_new((a_elm), a_field) 19 20 #define ql_first(a_head) ((a_head)->qlh_first) 21 22 #define ql_last(a_head, a_field) \ 23 ((ql_first(a_head) != NULL) \ 24 ? qr_prev(ql_first(a_head), a_field) : NULL) 25 26 #define ql_next(a_head, a_elm, a_field) \ 27 ((ql_last(a_head, a_field) != (a_elm)) \ 28 ? qr_next((a_elm), a_field) : NULL) 29 30 #define ql_prev(a_head, a_elm, a_field) \ 31 ((ql_first(a_head) != (a_elm)) ? qr_prev((a_elm), a_field) \ 32 : NULL) 33 34 #define ql_before_insert(a_head, a_qlelm, a_elm, a_field) do { \ 35 qr_before_insert((a_qlelm), (a_elm), a_field); \ 36 if (ql_first(a_head) == (a_qlelm)) { \ 37 ql_first(a_head) = (a_elm); \ 38 } \ 39 } while (0) 40 41 #define ql_after_insert(a_qlelm, a_elm, a_field) \ 42 qr_after_insert((a_qlelm), (a_elm), a_field) 43 44 #define ql_head_insert(a_head, a_elm, a_field) do { \ 45 if (ql_first(a_head) != NULL) { \ 46 qr_before_insert(ql_first(a_head), (a_elm), a_field); \ 47 } \ 48 ql_first(a_head) = (a_elm); \ 49 } while (0) 50 51 #define ql_tail_insert(a_head, a_elm, a_field) do { \ 52 if (ql_first(a_head) != NULL) { \ 53 qr_before_insert(ql_first(a_head), (a_elm), a_field); \ 54 } \ 55 ql_first(a_head) = qr_next((a_elm), a_field); \ 56 } while (0) 57 58 #define ql_remove(a_head, a_elm, a_field) do { \ 59 if (ql_first(a_head) == (a_elm)) { \ 60 ql_first(a_head) = qr_next(ql_first(a_head), a_field); \ 61 } \ 62 if (ql_first(a_head) != (a_elm)) { \ 63 qr_remove((a_elm), a_field); \ 64 } else { \ 65 ql_first(a_head) = NULL; \ 66 } \ 67 } while (0) 68 69 #define ql_head_remove(a_head, a_type, a_field) do { \ 70 a_type *t = ql_first(a_head); \ 71 ql_remove((a_head), t, a_field); \ 72 } while (0) 73 74 #define ql_tail_remove(a_head, a_type, a_field) do { \ 75 a_type *t = ql_last(a_head, a_field); \ 76 ql_remove((a_head), t, a_field); \ 77 } while (0) 78 79 #define ql_foreach(a_var, a_head, a_field) \ 80 qr_foreach((a_var), ql_first(a_head), a_field) 81 82 #define ql_reverse_foreach(a_var, a_head, a_field) \ 83 qr_reverse_foreach((a_var), ql_first(a_head), a_field) 84