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janet/core/func.c
2017-11-05 22:05:47 -05:00

41 lines
1.6 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>
/* If a frame has a closure environment, detach it from
* the stack and have it keep its own values */
void dst_function_detach(DstFunction *func) {
/* Check for closure environment */
if (NULL != func->envs && NULL != func->envs[0]) {
DstFuncEnv *env = func->envs[0];
size_t s = sizeof(DstValue) * env->length;
DstValue *vmem = malloc(s);
if (NULL == vmem) {
DST_OUT_OF_MEMORY;
}
memcpy(vmem, env->as.fiber->data + env->offset, s);
env->offset = 0;
env->as.values = vmem;
}
}