74 lines
2.4 KiB
C
74 lines
2.4 KiB
C
/*
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* Copyright (c) 2019 Andri Yngvason
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
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* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <assert.h>
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struct vec {
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void* data;
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size_t len;
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size_t cap;
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};
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static inline void vec_clear(struct vec* vec)
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{
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vec->len = 0;
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}
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int vec_init(struct vec* vec, size_t cap);
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void vec_destroy(struct vec* vec);
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int vec_reserve(struct vec* vec, size_t size);
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void vec_bzero(struct vec* vec);
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int vec_assign(struct vec* vec, const void* data, size_t size);
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int vec_append(struct vec* vec, const void* data, size_t size);
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void* vec_append_zero(struct vec* vec, size_t size);
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static inline void vec_fast_append_8(struct vec* vec, uint8_t value)
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{
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assert(vec->len < vec->cap);
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((uint8_t*)vec->data)[vec->len++] = value;
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}
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static inline void vec_fast_append_32(struct vec* vec, uint32_t value)
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{
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assert(vec->len + sizeof(value) <= vec->cap);
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assert(vec->len % sizeof(value) == 0);
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uint32_t* p = (uint32_t*)((uint8_t*)vec->data + vec->len);
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*p = value;
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vec->len += sizeof(value);
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}
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#define vec_for(elem, vec) \
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for (elem = (vec)->data; \
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((ptrdiff_t)elem - (ptrdiff_t)(vec)->data) < (ptrdiff_t)(vec)->len;\
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++elem)
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#define vec_for_tail(elem, vec) \
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for (elem = (vec)->data, ++elem; \
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((ptrdiff_t)elem - (ptrdiff_t)(vec)->data) < (ptrdiff_t)(vec)->len;\
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++elem)
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#define vec_for_ptr(elem, vec) \
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__typeof__(elem)* ptr_; \
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vec_for(ptr_, vec) \
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if ((elem = *ptr_))
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