mirror of
https://github.com/janet-lang/janet
synced 2024-11-14 04:34:48 +00:00
51 lines
2.1 KiB
C
51 lines
2.1 KiB
C
/*
|
|
* Copyright (c) 2017 Calvin Rose
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to
|
|
* deal in the Software without restriction, including without limitation the
|
|
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
* sell copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*/
|
|
|
|
#include <dst/dst.h>
|
|
#include "cache.h"
|
|
|
|
/* Create a new empty tuple of the given size. This will return memory
|
|
* which should be filled with DstValues. The memory will not be collected until
|
|
* dst_tuple_end is called. */
|
|
DstValue *dst_tuple_begin(uint32_t length) {
|
|
char *data = dst_alloc(DST_MEMORY_NONE, 2 * sizeof(uint32_t) + length * sizeof(DstValue));
|
|
DstValue *tuple = (DstValue *)(data + (2 * sizeof(uint32_t)));
|
|
dst_tuple_length(tuple) = length;
|
|
return tuple;
|
|
}
|
|
|
|
/* Finish building a tuple */
|
|
const DstValue *dst_tuple_end(DstValue *tuple) {
|
|
DstValue check;
|
|
dst_tuple_hash(tuple) = dst_calchash_array(tuple, dst_tuple_length(tuple));
|
|
check = dst_cache_add(dst_wrap_tuple((const DstValue *) tuple));
|
|
dst_gc_settype(dst_tuple_raw(check.as.tuple), DST_MEMORY_TUPLE);
|
|
return check.as.tuple;
|
|
}
|
|
|
|
/* Build a tuple with n values */
|
|
const DstValue *dst_tuple_n(DstValue *values, uint32_t n) {
|
|
DstValue *t = dst_tuple_begin(n);
|
|
memcpy(t, values, sizeof(DstValue) * n);
|
|
return dst_tuple_end(t);
|
|
}
|