mirror of https://github.com/janet-lang/janet
61 lines
2.7 KiB
C
61 lines
2.7 KiB
C
/*
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* Copyright (c) 2018 Calvin Rose
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef JANET_VECTOR_H_defined
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#define JANET_VECTOR_H_defined
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#include <janet/janet.h>
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/*
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* vector code modified from
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* https://github.com/nothings/stb/blob/master/stretchy_buffer.h
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*/
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/* This is mainly used code such as the assembler or compiler, which
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* need vector like data structures that are not garbage collected
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* and used only from C */
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#define janet_v_free(v) (((v) != NULL) ? (free(janet_v__raw(v)), 0) : 0)
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#define janet_v_push(v, x) (janet_v__maybegrow(v, 1), (v)[janet_v__cnt(v)++] = (x))
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#define janet_v_pop(v) (janet_v_count(v) ? janet_v__cnt(v)-- : 0)
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#define janet_v_count(v) (((v) != NULL) ? janet_v__cnt(v) : 0)
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#define janet_v_add(v, n) (janet_v__maybegrow(v, n), janet_v_cnt(v) += (n), &(v)[janet_v__cnt(v) - (n)])
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#define janet_v_last(v) ((v)[janet_v__cnt(v) - 1])
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#define janet_v_empty(v) (((v) != NULL) ? (janet_v__cnt(v) = 0) : 0)
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#define janet_v_copy(v) (janet_v_copymem((v), sizeof(*(v))))
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#define janet_v_flatten(v) (janet_v_flattenmem((v), sizeof(*(v))))
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#define janet_v__raw(v) ((int32_t *)(v) - 2)
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#define janet_v__cap(v) janet_v__raw(v)[0]
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#define janet_v__cnt(v) janet_v__raw(v)[1]
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#define janet_v__needgrow(v, n) ((v) == NULL || janet_v__cnt(v) + (n) >= janet_v__cap(v))
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#define janet_v__maybegrow(v, n) (janet_v__needgrow((v), (n)) ? janet_v__grow((v), (n)) : 0)
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#define janet_v__grow(v, n) ((v) = janet_v_grow((v), (n), sizeof(*(v))))
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/* Actual functions defined in vector.c */
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void *janet_v_grow(void *v, int32_t increment, int32_t itemsize);
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void *janet_v_copymem(void *v, int32_t itemsize);
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void *janet_v_flattenmem(void *v, int32_t itemsize);
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#endif
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