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Diffstat (limited to '')
| -rw-r--r-- | contrib/dynarray.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/contrib/dynarray.h b/contrib/dynarray.h deleted file mode 100644 index 7cbb686..0000000 --- a/contrib/dynarray.h +++ /dev/null @@ -1,112 +0,0 @@ -/* Copyright (C) CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> - * SPDX-License-Identifier: GPL-3.0-or-later - */ - -/*! - * \brief Simple write-once allocation-optimal dynamic array. - * - * Include it into your .c file - * - * prefix - identifier prefix, e.g. ptr -> struct ptr_dynarray, ptr_dynarray_add(), ... - * ntype - data type to be stored. Let it be a number, pointer or small struct - * initial_capacity - how many data items will be allocated on stack and copied with assignment - * - * prefix_dynarray_add() - add a data item - * prefix_dynarray_fix() - call EVERYTIME the array is copied from some already invalid stack - * prefix_dynarray_free() - call EVERYTIME you dismiss all copies of the array - * - */ - -#include <stdlib.h> -#include <assert.h> - -#pragma once - -#define DYNARRAY_VISIBILITY_STATIC static -#define DYNARRAY_VISIBILITY_PUBLIC -#define DYNARRAY_VISIBILITY_LIBRARY __public__ - -#define dynarray_declare(prefix, ntype, visibility, initial_capacity) \ - typedef struct prefix ## _dynarray { \ - ssize_t capacity; \ - ssize_t size; \ - ntype *(*arr)(struct prefix ## _dynarray *dynarray); \ - ntype init[initial_capacity]; \ - ntype *_arr; \ - } prefix ## _dynarray_t; \ - \ - visibility ntype *prefix ## _dynarray_arr(prefix ## _dynarray_t *dynarray); \ - visibility void prefix ## _dynarray_add(prefix ## _dynarray_t *dynarray, \ - ntype const *to_add); \ - visibility void prefix ## _dynarray_free(prefix ## _dynarray_t *dynarray); - -#define dynarray_foreach(prefix, ntype, ptr, array) \ - for (ntype *ptr = prefix ## _dynarray_arr(&(array)); \ - ptr < prefix ## _dynarray_arr(&(array)) + (array).size; ptr++) - -#define dynarray_define(prefix, ntype, visibility) \ - \ - static void prefix ## _dynarray_free__(struct prefix ## _dynarray *dynarray) \ - { \ - if (dynarray->capacity > sizeof(dynarray->init) / sizeof(*dynarray->init)) { \ - free(dynarray->_arr); \ - } \ - } \ - \ - __attribute__((unused)) \ - visibility ntype *prefix ## _dynarray_arr(struct prefix ## _dynarray *dynarray) \ - { \ - assert(dynarray->size <= dynarray->capacity); \ - return (dynarray->capacity <= sizeof(dynarray->init) / sizeof(*dynarray->init) ? \ - dynarray->init : dynarray->_arr); \ - } \ - \ - static ntype *prefix ## _dynarray_arr_init__(struct prefix ## _dynarray *dynarray) \ - { \ - assert(dynarray->capacity == sizeof(dynarray->init) / sizeof(*dynarray->init)); \ - return dynarray->init; \ - } \ - \ - static ntype *prefix ## _dynarray_arr_arr__(struct prefix ## _dynarray *dynarray) \ - { \ - assert(dynarray->capacity > sizeof(dynarray->init) / sizeof(*dynarray->init)); \ - return dynarray->_arr; \ - } \ - \ - __attribute__((unused)) \ - visibility void prefix ## _dynarray_add(struct prefix ## _dynarray *dynarray, \ - ntype const *to_add) \ - { \ - if (dynarray->capacity < 0) { \ - return; \ - } \ - if (dynarray->capacity == 0) { \ - dynarray->capacity = sizeof(dynarray->init) / sizeof(*dynarray->init); \ - dynarray->arr = prefix ## _dynarray_arr_init__; \ - } \ - if (dynarray->size >= dynarray->capacity) { \ - ssize_t new_capacity = dynarray->capacity * 2 + 1; \ - ntype *new_arr = calloc(new_capacity, sizeof(ntype)); \ - if (new_arr == NULL) { \ - prefix ## _dynarray_free__(dynarray); \ - dynarray->capacity = dynarray->size = -1; \ - return; \ - } \ - if (dynarray->capacity > 0) { \ - memcpy(new_arr, prefix ## _dynarray_arr(dynarray), \ - dynarray->capacity * sizeof(ntype)); \ - } \ - prefix ## _dynarray_free__(dynarray); \ - dynarray->_arr = new_arr; \ - dynarray->capacity = new_capacity; \ - dynarray->arr = prefix ## _dynarray_arr_arr__; \ - } \ - prefix ## _dynarray_arr(dynarray)[dynarray->size++] = *to_add; \ - } \ - \ - __attribute__((unused)) \ - visibility void prefix ## _dynarray_free(struct prefix ## _dynarray *dynarray) \ - { \ - prefix ## _dynarray_free__(dynarray); \ - memset(dynarray, 0, sizeof(*dynarray)); \ - } |