From 33cc3b9dd7bf3dae1c6cf86e46bb4923f96e7fff Mon Sep 17 00:00:00 2001 From: トトも <85485984+ElectronicsArchiver@users.noreply.github.com> Date: Sat, 16 Apr 2022 20:18:56 +0200 Subject: Source / Include Folder (#88) Moved Source Files Into `src` Folder --- src/darray.h | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 110 insertions(+) create mode 100644 src/darray.h (limited to 'src/darray.h') diff --git a/src/darray.h b/src/darray.h new file mode 100644 index 0000000..4464381 --- /dev/null +++ b/src/darray.h @@ -0,0 +1,110 @@ +/**************************************************************************** + * bfs * + * Copyright (C) 2019-2022 Tavian Barnes * + * * + * Permission to use, copy, modify, and/or distribute this software for any * + * purpose with or without fee is hereby granted. * + * * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * + ****************************************************************************/ + +/** + * A dynamic array library. + * + * darrays are represented by a simple pointer to the array element type, like + * any other array. Behind the scenes, the capacity and current length of the + * array are stored along with it. NULL is a valid way to initialize an empty + * darray: + * + * int *darray = NULL; + * + * To append an element to a darray, use the DARRAY_PUSH macro: + * + * int e = 42; + * if (DARRAY_PUSH(&darray, &e) != 0) { + * // Report the error... + * } + * + * The length can be retrieved by darray_length(). Iterating over the array + * works like normal arrays: + * + * for (size_t i = 0; i < darray_length(darray); ++i) { + * printf("%d\n", darray[i]); + * } + * + * To free a darray, use darray_free(): + * + * darray_free(darray); + */ + +#ifndef BFS_DARRAY_H +#define BFS_DARRAY_H + +#include + +/** + * Get the length of a darray. + * + * @param da + * The array in question. + * @return + * The length of the array. + */ +size_t darray_length(const void *da); + +/** + * @internal Use DARRAY_PUSH(). + * + * Push an element into a darray. + * + * @param da + * The array to append to. + * @param item + * The item to append. + * @param size + * The size of the item. + * @return + * The (new) location of the array. + */ +void *darray_push(void *da, const void *item, size_t size); + +/** + * @internal Use DARRAY_PUSH(). + * + * Check if the last darray_push() call failed. + * + * @param da + * The darray to check. + * @return + * 0 on success, -1 on failure. + */ +int darray_check(void *da); + +/** + * Free a darray. + * + * @param da + * The darray to free. + */ +void darray_free(void *da); + +/** + * Push an item into a darray. + * + * @param da + * The array to append to. + * @param item + * A pointer to the item to append. + * @return + * 0 on success, -1 on failure. + */ +#define DARRAY_PUSH(da, item) \ + (darray_check(*(da) = darray_push(*(da), (item), sizeof(**(da) = *(item))))) + +#endif // BFS_DARRAY_H -- cgit v1.2.3