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/*
* nanowasm, a tiny WebAssembly/Wasm interpreter
* Copyright (C) 2023-2025 Xavier Del Campo Romero
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/.
*/
#include <nanowasm/nw.h>
#include <nw/io.h>
#include <nw/interp.h>
#include <nw/log.h>
#include <nw/routines.h>
#include <nw/stack.h>
#include <nw/types.h>
static enum nw_state push(struct nw_interp *const i)
{
struct nw_i_sm_unary *const u = &i->sm.unary;
const enum nw_state n = nwp_stack_push(i, &u->io);
if (n)
return n;
i->push_type = u->type;
nwp_interp_resume(i);
return NW_AGAIN;
}
static enum nw_state pop(struct nw_interp *const i)
{
struct nw_i_sm_unary *const u = &i->sm.unary;
const enum nw_state n = nwp_stack_pop(i, &u->io);
size_t sz;
if (n)
return n;
else if (u->op(&u->in, &u->out))
{
static const char *const exc = "unary operation failed";
i->exception = exc;
#ifdef NW_LOG
nwp_log("%s\n", exc);
#endif
return NW_FATAL;
}
else if (nwp_type_sz(u->type, &sz))
{
static const char *const exc = "invalid type";
i->exception = exc;
#ifdef NW_LOG
nwp_log("%s: %d\n", exc, u->type);
#endif
return NW_FATAL;
}
else
{
struct nw_sm_io io = {0};
io.buf = &u->out;
io.n = sz;
u->io = io;
}
i->next = push;
return NW_AGAIN;
}
void nwp_unary(struct nw_interp *const i, const enum nw_type t,
int (*const op)(const union nw_value *, union nw_value *))
{
const struct nw_i_sm_unary u = {0};
struct nw_i_sm_unary *const pu = &i->sm.unary;
size_t sz;
*pu = u;
pu->type = t;
pu->op = op;
nwp_type_sz(t, &sz);
pu->io.buf = &pu->in;
pu->io.n = sz;
i->next = pop;
}
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