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/*
* Copyright (C) 2022 Jo-Philipp Wich <jo@mein.io>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* 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.
*/
#include "ucode/program.h"
#include "ucode/source.h"
#include "ucode/vallist.h"
uc_program_t *
uc_program_new(uc_source_t *source)
{
uc_program_t *prog;
prog = xalloc(sizeof(*prog));
prog->functions.next = &prog->functions;
prog->functions.prev = &prog->functions;
prog->source = uc_source_get(source);
uc_vallist_init(&prog->constants);
return prog;
}
static inline uc_function_t *
ref_to_function(uc_weakref_t *ref)
{
return (uc_function_t *)((uintptr_t)ref - offsetof(uc_function_t, progref));
}
static inline uc_value_t *
ref_to_uv(uc_weakref_t *ref)
{
return (uc_value_t *)((uintptr_t)ref - offsetof(uc_function_t, progref));
}
void
uc_program_free(uc_program_t *prog)
{
uc_weakref_t *ref, *tmp;
uc_function_t *func;
if (!prog)
return;
for (ref = prog->functions.next, tmp = ref->next; ref != &prog->functions; ref = tmp, tmp = tmp->next) {
func = ref_to_function(ref);
func->program = NULL;
func->progref.next = NULL;
func->progref.prev = NULL;
ucv_put(&func->header);
}
uc_vallist_free(&prog->constants);
uc_source_put(prog->source);
free(prog);
}
uc_value_t *
uc_program_function_new(uc_program_t *prog, const char *name, size_t srcpos)
{
uc_function_t *func;
func = (uc_function_t *)ucv_function_new(name, srcpos, prog);
func->root = (prog->functions.next == &prog->functions);
ucv_ref(&prog->functions, &func->progref);
return &func->header;
}
size_t
uc_program_function_id(uc_program_t *prog, uc_value_t *func)
{
uc_weakref_t *ref;
size_t i;
for (ref = prog->functions.prev, i = 1; ref != &prog->functions; ref = ref->prev, i++)
if (ref_to_uv(ref) == func)
return i;
return 0;
}
uc_value_t *
uc_program_function_load(uc_program_t *prog, size_t id)
{
uc_weakref_t *ref;
size_t i;
for (ref = prog->functions.prev, i = 1; ref != &prog->functions; ref = ref->prev, i++)
if (i == id)
return ref_to_uv(ref);
return NULL;
}
uc_value_t *
uc_program_get_constant(uc_program_t *prog, size_t idx)
{
return uc_vallist_get(&prog->constants, idx);
}
ssize_t
uc_program_add_constant(uc_program_t *prog, uc_value_t *val)
{
return uc_vallist_add(&prog->constants, val);
}
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