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shrub/noun/nock.c

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/* g/n.c
**
*/
#include "all.h"
static u3_noun _n_nock_on(u3_noun bus, u3_noun fol);
/* u3_term_io_hija(): hijack console for cooked print.
*/
FILE*
u3_term_io_hija(void);
/* u3_term_io_loja(): release console from cooked print.
*/
void
u3_term_io_loja(int x);
/* uL, uH: wrap hijack/lojack around fprintf.
**
** uL(fprintf(uH, ...));
*/
# define uH u3_term_io_hija()
# define uL(x) u3_term_io_loja(x)
/* _n_hint(): process hint.
*/
static u3_noun
_n_hint(u3_noun zep,
u3_noun hod,
u3_noun bus,
u3_noun nex)
{
switch ( zep ) {
default: {
// u3m_p("weird zep", zep);
u3a_lose(zep);
u3a_lose(hod);
return _n_nock_on(bus, nex);
}
case c3__hunk:
case c3__lose:
case c3__mean:
case c3__spot: {
u3_noun tac = u3nc(zep, hod);
u3_noun pro;
u3t_push(tac);
#if 0
{
static int low_i;
if ( !low_i ) {
low_i = 1;
if ( 0 == (u3R->pro.nox_d % 65536ULL) ) {
if ( c3__spot == zep ) {
uL(fprintf(uH, "spot %d/%d : %d/%d\r\n",
u3h(u3h(u3t(hod))),
u3t(u3h(u3t(hod))),
u3h(u3t(u3t(hod))),
u3t(u3t(u3t(hod)))));
}
}
low_i = 0;
}
}
#endif
pro = _n_nock_on(bus, nex);
u3t_drop();
return pro;
}
case c3__live: {
if ( c3y == u3ud(hod) ) {
u3t_off(noc_o);
u3t_heck(hod);
u3t_on(noc_o);
} else {
u3z(hod);
}
return _n_nock_on(bus, nex);
}
case c3__slog: {
if ( !(u3C.wag_w & u3o_quiet) ) {
u3t_off(noc_o);
u3t_slog(hod);
u3t_on(noc_o);
}
return _n_nock_on(bus, nex);
}
case c3__germ: {
u3_noun pro = _n_nock_on(bus, nex);
if ( c3y == u3r_sing(pro, hod) ) {
u3z(pro); return hod;
} else {
u3z(hod); return pro;
}
}
case c3__fast: {
u3_noun pro = _n_nock_on(bus, nex);
u3t_off(noc_o);
u3j_mine(hod, u3k(pro));
u3t_on(noc_o);
return pro;
}
case c3__memo: {
u3z(hod);
#if 0
return _n_nock_on(bus, nex);
#else
{
u3_noun pro = u3z_find_2(144 + c3__nock, bus, nex);
if ( pro != u3_none ) {
u3z(bus); u3z(nex);
return pro;
}
pro = _n_nock_on(u3k(bus), u3k(nex));
if ( &(u3H->rod_u) != u3R ) {
u3z_save_2(144 + c3__nock, bus, nex, pro);
}
u3z(bus); u3z(nex);
return pro;
}
#endif
}
case c3__sole: {
u3z(hod);
{
u3_noun pro = _n_nock_on(bus, nex);
// return u3z_uniq(pro);
return pro;
}
}
}
}
/* _n_mush_in(): see _n_mush().
*/
static u3_noun
_n_mush_in(u3_noun val)
{
if ( c3n == u3du(val) ) {
return u3_nul;
}
else {
u3_noun h_val = u3h(val);
u3_noun ite;
if ( c3n == u3ud(h_val) ) {
ite = u3nc(c3__leaf, u3_nul);
} else {
ite = u3nc(c3__leaf, u3qe_trip(h_val));
}
return u3nc(ite, _n_mush_in(u3t(val)));
}
}
/* _n_mush(): tank from failed path request.
*/
static u3_noun
_n_mush(u3_noun val)
{
u3_noun pro;
pro = u3nt(c3__rose,
u3nt(u3nc('/', u3_nul), u3nc('/', u3_nul), u3_nul),
_n_mush_in(val));
u3z(val);
return pro;
}
/* _n_nock_on(): produce .*(bus fol). Do not virtualize.
*/
static u3_noun
_n_nock_on(u3_noun bus, u3_noun fol)
{
u3_noun hib, gal;
while ( 1 ) {
hib = u3h(fol);
gal = u3t(fol);
#ifdef U3_CPU_DEBUG
u3R->pro.nox_d += 1;
#endif
if ( c3y == u3r_du(hib) ) {
u3_noun poz, riv;
poz = _n_nock_on(u3k(bus), u3k(hib));
riv = _n_nock_on(bus, u3k(gal));
u3a_lose(fol);
return u3i_cell(poz, riv);
}
else switch ( hib ) {
default: return u3m_bail(c3__exit);
case 0: {
if ( c3n == u3r_ud(gal) ) {
return u3m_bail(c3__exit);
}
else {
u3_noun pro = u3k(u3at(gal, bus));
u3a_lose(bus); u3a_lose(fol);
return pro;
}
}
c3_assert(!"not reached");
case 1: {
u3_noun pro = u3k(gal);
u3a_lose(bus); u3a_lose(fol);
return pro;
}
c3_assert(!"not reached");
case 2: {
u3_noun nex = _n_nock_on(u3k(bus), u3k(u3t(gal)));
u3_noun seb = _n_nock_on(bus, u3k(u3h(gal)));
u3a_lose(fol);
bus = seb;
fol = nex;
continue;
}
c3_assert(!"not reached");
case 3: {
u3_noun gof, pro;
gof = _n_nock_on(bus, u3k(gal));
pro = u3r_du(gof);
u3a_lose(gof); u3a_lose(fol);
return pro;
}
c3_assert(!"not reached");
case 4: {
u3_noun gof, pro;
gof = _n_nock_on(bus, u3k(gal));
pro = u3i_vint(gof);
u3a_lose(fol);
return pro;
}
c3_assert(!"not reached");
case 5: {
u3_noun wim = _n_nock_on(bus, u3k(gal));
u3_noun pro = u3r_sing(u3h(wim), u3t(wim));
u3a_lose(wim); u3a_lose(fol);
return pro;
}
c3_assert(!"not reached");
case 6: {
u3_noun b_gal, c_gal, d_gal;
u3x_trel(gal, &b_gal, &c_gal, &d_gal);
{
u3_noun tys = _n_nock_on(u3k(bus), u3k(b_gal));
u3_noun nex;
if ( 0 == tys ) {
nex = u3k(c_gal);
} else if ( 1 == tys ) {
nex = u3k(d_gal);
} else return u3m_bail(c3__exit);
u3a_lose(fol);
fol = nex;
continue;
}
}
c3_assert(!"not reached");
case 7: {
u3_noun b_gal, c_gal;
u3x_cell(gal, &b_gal, &c_gal);
{
u3_noun bod = _n_nock_on(bus, u3k(b_gal));
u3_noun nex = u3k(c_gal);
u3a_lose(fol);
bus = bod;
fol = nex;
continue;
}
}
c3_assert(!"not reached");
case 8: {
u3_noun b_gal, c_gal;
u3x_cell(gal, &b_gal, &c_gal);
{
u3_noun heb = _n_nock_on(u3k(bus), u3k(b_gal));
u3_noun bod = u3nc(heb, bus);
u3_noun nex = u3k(c_gal);
u3a_lose(fol);
bus = bod;
fol = nex;
continue;
}
}
c3_assert(!"not reached");
case 9: {
u3_noun b_gal, c_gal;
u3x_cell(gal, &b_gal, &c_gal);
{
u3_noun seb = _n_nock_on(bus, u3k(c_gal));
u3_noun pro;
u3t_off(noc_o);
pro = u3j_kick(seb, b_gal);
u3t_on(noc_o);
if ( u3_none != pro ) {
u3a_lose(fol);
return pro;
}
else {
if ( c3n == u3r_ud(b_gal) ) {
return u3m_bail(c3__exit);
}
else {
u3_noun nex = u3k(u3at(b_gal, seb));
u3a_lose(fol);
bus = seb;
fol = nex;
continue;
}
}
}
}
c3_assert(!"not reached");
case 10: {
u3_noun p_gal, q_gal;
u3x_cell(gal, &p_gal, &q_gal);
{
u3_noun zep, hod, nex;
if ( c3y == u3r_du(p_gal) ) {
u3_noun b_gal = u3h(p_gal);
u3_noun c_gal = u3t(p_gal);
u3_noun d_gal = q_gal;
zep = u3k(b_gal);
hod = _n_nock_on(u3k(bus), u3k(c_gal));
nex = u3k(d_gal);
}
else {
u3_noun b_gal = p_gal;
u3_noun c_gal = q_gal;
zep = u3k(b_gal);
hod = u3_nul;
nex = u3k(c_gal);
}
u3a_lose(fol);
return _n_hint(zep, hod, bus, nex);
}
}
case 11: {
u3_noun ref = _n_nock_on(u3k(bus), u3k(u3h(gal)));
u3_noun gof = _n_nock_on(bus, u3k(u3t(gal)));
u3_noun val;
u3t_off(noc_o);
val = u3m_soft_esc(ref, u3k(gof));
u3t_on(noc_o);
if ( !_(u3du(val)) ) {
u3m_bail(u3nt(1, gof, 0));
}
if ( !_(u3du(u3t(val))) ) {
//
// replace with proper error stack push
//
u3t_push(u3nc(c3__hunk, _n_mush(gof)));
return u3m_bail(c3__exit);
}
else {
u3_noun pro;
u3z(gof);
u3z(fol);
pro = u3k(u3t(u3t(val)));
u3z(val);
return pro;
}
}
c3_assert(!"not reached");
}
}
}
/* u3n_nock_on(): produce .*(bus fol). Do not virtualize.
*/
u3_noun
u3n_nock_on(u3_noun bus, u3_noun fol)
{
u3_noun pro;
u3t_on(noc_o);
pro = _n_nock_on(bus, fol);
u3t_off(noc_o);
return pro;
}
/* u3n_kick_on(): fire `gat` without changing the sample.
*/
u3_noun
u3n_kick_on(u3_noun gat)
{
return u3j_kink(gat, 2);
}
c3_w exc_w;
/* u3n_slam_on(): produce (gat sam).
*/
u3_noun
u3n_slam_on(u3_noun gat, u3_noun sam)
{
u3_noun cor = u3nc(u3k(u3h(gat)), u3nc(sam, u3k(u3t(u3t(gat)))));
#if 0
if ( &u3H->rod_u == u3R ) {
if ( exc_w == 1 ) {
c3_assert(0);
}
exc_w++;
}
#endif
u3z(gat);
return u3n_kick_on(cor);
}
/* u3n_nock_et(): produce .*(bus fol), as ++toon, in namespace.
*/
u3_noun
u3n_nock_et(u3_noun gul, u3_noun bus, u3_noun fol)
{
return u3m_soft_run(gul, u3n_nock_on, bus, fol);
}
/* u3n_slam_et(): produce (gat sam), as ++toon, in namespace.
*/
u3_noun
u3n_slam_et(u3_noun gul, u3_noun gat, u3_noun sam)
{
return u3m_soft_run(gul, u3n_slam_on, gat, sam);
}
/* u3n_nock_an(): as slam_in(), but with empty fly.
*/
u3_noun
u3n_nock_an(u3_noun bus, u3_noun fol)
{
u3_noun gul = u3nt(u3nt(1, 0, 0), 0, 0); // |=(a/{* *} ~)
return u3n_nock_et(gul, bus, fol);
}
/* These must match the order in the section marked OPCODE TABLE */
#define HALT 0 // stop executing, leaving the product on the top of stack
#define COPY 1 // copy TOS, keep, and push it
#define TOSS 2 // throw away and lose TOS
#define SWAP 3 // exchange TOS with item underneat
#define SWAT 4 // toss item under TOS (under)
#define SKIP 5 // skip N (c3_s) instructions
#define SKIN 6 // pop loob, skip N if it is no, bail if not yes
#define SBIP 7 // skip with byte argument
#define SBIN 8 // skin with byte argument
#define CONS 9 // makes a cell of [under, TOS]
#define SNOC 10 // makes a cell of [TOS, under]
#define HEAD 11 // replaces TOS with its head (old TOS lost)
#define TAIL 12 // as HEAD, but for the tail
#define FRAG 13 // as HEAD/TAIL but with arbitrary noun axis
#define FRAS 14 // frag with short
#define FRAB 15 // frag with byte axis
#define QUOT 16 // toss TOS, push literal noun argument
#define QUIP 17 // as QUOT, but without the toss
#define NOCK 18 // *(under, TOS)
#define NOCT 19 // as NOCK, but in tail position
#define DEEP 20 // pop TOS and push isCell loob
#define PEEP 21 // as DEEP, but doesn't pop
#define BUMP 22 // increment TOS
#define SAME 23 // pop two items and push equality loob
#define KICK 24 // pull noun axis from TOS
#define KICS 25 // kick with short axis
#define KICB 26 // kick with byte axis
#define TICK 27 // KICK, but in tail position
#define TICS 28 // tick with short axis
#define TICB 29 // tick with byte axis
#define WISH 30 // ref is under, gof is TOS, u3m_soft_esc
#define FAST 31 // u3j_mine TOS
#define CUSH 32 // u3t_push TOS
#define DROP 33 // u3t_drop
#define PUMO 34 // saves memo from tos->[pro key]
#define GEMO 35 // pushes (unit pro) of u3z_save with key=TOS
#define HECK 36 // u3t_heck TOS
#define SLOG 37 // u3t_slog TOS
#define BAIL 37 // bail %exit
/* _n_apen(): emit the instructions contained in src to dst
*/
static inline void
_n_apen(u3_noun* dst, u3_noun src)
{
*dst = u3qb_weld(src, *dst);
}
/* _n_emit(): emit a single instruction to ops, returning
* the size (in bytes) required to store that
* opcode.
*/
static inline c3_y
_n_emit(u3_noun *ops, u3_noun op)
{
*ops = u3nc(op, *ops);
if ( c3n == u3du(op) ) {
return sizeof(c3_y);
}
else switch ( u3h(op) ) {
case SBIP:
case SBIN:
case KICB:
case TICB:
case FRAB:
return sizeof(c3_y) + sizeof(c3_y);
case KICS:
case TICS:
case FRAS:
case SKIP:
case SKIN:
return sizeof(c3_y) + sizeof(c3_s);
case FRAG:
case QUOT:
case QUIP:
case TICK:
case KICK:
return sizeof(c3_y) + sizeof(u3_noun);
default:
c3_assert(0);
}
}
static c3_s _n_comp(u3_noun*, u3_noun, c3_o, c3_o);
static u3_noun
_n_skip(c3_s len_s)
{
return u3nc((len_s < 0xFF ? SBIP : SKIP), len_s);
}
static u3_noun
_n_skin(c3_s len_s)
{
return u3nc((len_s < 0xFF ? SBIN : SKIN), len_s);
}
/* _n_bint(): hint-processing helper for _n_comp.
* hif: hint-formula (first part of 10). RETAIN.
* nef: next-formula (second part of 10). RETAIN.
*/
static c3_s
_n_bint(u3_noun* ops, u3_noun hif, u3_noun nef, c3_o los_o, c3_o tel_o)
{
if ( c3n == u3du(hif) ) {
// no currently recognized static hints
return _n_comp(ops, nef, los_o, tel_o);
}
else {
c3_s tot_s = 0;
u3_noun zep, hod;
u3x_cell(hif, &zep, &hod);
switch ( zep ) {
default:
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, TOSS);
tot_s += _n_comp(ops, nef, los_o, tel_o);
break;
case c3__hunk:
case c3__lose:
case c3__mean:
case c3__spot:
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, u3nc(CUSH, zep));
tot_s += _n_comp(ops, nef, los_o, c3n);
tot_s += _n_emit(ops, DROP);
break;
case c3__live: {
u3_noun yep = u3_nul,
nop = u3_nul;
c3_s y_s = 0,
n_s = 0;
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, HECK);
tot_s += _n_comp(ops, nef, los_o, tel_o);
break;
}
case c3__slog:
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, SLOG);
tot_s += _n_comp(ops, nef, los_o, tel_o);
break;
// germ and sole are unused...
case c3__fast:
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, SWAP);
tot_s += _n_comp(ops, nef, c3n, c3n);
tot_s += _n_emit(ops, (c3y == los_o) ? FALT : FAST);
break;
case c3__memo: {
u3_noun mem = u3_nul;
c3_s mem_s;
c3_y op_y;
tot_s += _n_comp(ops, hod, c3n, c3n);
tot_s += _n_emit(ops, TOSS);
// SKIM leaves [bus key] on the stack in the unmemoized case
mem_s += _n_comp(&mem, nef, c3n, c3n);
// now [pro key bus?], where bus was left on if appropropriate
mem_s += _n_emit(ops, SAVE);
op_y = (c3y == los_o)
? (( mem_s < 0xFF ) ? SLIB : SLIM)
: (( mem_s < 0xFF ) ? SKIB : SKIM);
// SKIM leaves [pro bus] and SLIM leaves [pro]
tot_s += _n_emit(ops, u3nt(op_y, mem_s, u3k(nef)));
tot_s += mem_s; _n_apen(ops, mem);
break;
}
}
return tot_s;
}
}
/* _n_comp(): compile nock formula to reversed opcode list
* ops is a pointer to a list (to be emitted to)
* fol is the nock formula to compile. RETAIN.
* los_o indicates whether we should remove our subject from the stack
* tel_o is yes if this formula is in tail position
* return: the number of bytes needed for this opcode list
*/
static c3_s
_n_comp(u3_noun* ops, u3_noun fol, c3_o los_o, c3_o tel_o)
{
c3_y op_y;
c3_s tot_s = 0;
u3_noun cod, arg, hed, tel;
u3x_cell(fol, &cod, &arg);
if ( c3y == u3du(cod) ) {
tot_s += _n_comp(ops, cod, c3n, c3n);
tot_s += _n_emit(ops, SWAP);
tot_s += _n_comp(ops, arg, c3n, c3n);
tot_s += _n_emit(ops, (c3y == los_o ) ? AULT : AUTO);
}
else switch ( cod ) {
case 0:
if ( c3n == u3ud(arg) ) {
u3m_bail(c3__exit);
return 0;
}
switch ( arg ) {
case 0:
tot_s += _n_emit(ops, BAIL);
break;
case 1:
if ( c3n == los_o ) {
tot_s += _n_emit(ops, COPY);
}
break;
case 2:
tot_s += _n_emit(ops, (c3y == los_o) ? HELD : HEAD);
break;
case 3:
tot_s += _n_emit(ops, (c3y == los_o) ? TALL : TAIL);
break;
default:
op_y = (c3y == los_o)
? (arg < 0xFF ? FLAB : arg < 0xFFFF ? FLAS : FLAG)
: (arg < 0xFF ? FRAB : arg < 0xFFFF ? FRAS : FRAG);
tot_s += _n_emit(ops, u3nc(op, arg));
break;
}
break;
case 1:
op_y = (c3y == los_o)
? (arg < 0xFF ? LILB : arg < 0xFFFF ? LILS : LILN)
: (arg < 0xFF ? LITB : arg < 0xFFFF ? LITS : LITN);
tot_s += _n_emit(ops, u3nc(op_y, u3k(arg)));
break;
case 2:
u3x_cell(arg, &hed, &tel);
tot_s += _n_comp(ops, hed, c3n, c3n);
tot_s += _n_emit(ops, SWAP);
tot_s += _n_comp(ops, tel, c3n, c3n);
op_y = (c3y == los_o)
? ((c3y == tel_o) ? NOLT : NOLK)
: ((c3y == tel_o) ? NOCT : NOCK);
tot_s += _n_emit(ops, op_y);
break;
case 3:
tot_s += _n_comp(ops, arg, los_o, c3n);
tot_s += _n_emit(ops, DEEP);
break;
case 4:
tot_s += _n_comp(ops, arg, los_o, c3n);
tot_s += _n_emit(ops, BUMP);
break;
case 5:
u3x_cell(arg, &hed, &tel);
tot_s += _n_comp(ops, hed, c3n, c3n);
tot_s += _n_emit(ops, SWAP);
tot_s += _n_comp(ops, tel, c3n, c3n);
tot_s += _n_emit(ops, (c3y == los_o) ? SALM : SAME);
break;
case 6: {
u3_noun mid, yep, nop;
c3_y yep_s, nop_s;
u3x_trel(arg, &hed, &mid, &tel);
tot_s += _n_comp(ops, hed, c3n, c3n);
yep_s = _n_comp(&yep, mid, los_o, tel_o);
nop_s = _n_comp(&nop, tel, los_o, tel_o);
yep_s += _n_emit(&yep, _n_skip(nop_s));
tot_s += _n_emit(ops, _n_skin(yep_s));
tot_s += yep_s; _n_apen(ops, yep);
tot_s += nop_s; _n_apen(ops, nop);
break;
}
case 7:
u3x_cell(arg, &hed, &tel);
tot_s += _n_comp(ops, hed, los_o, c3n);
tot_s += _n_comp(ops, tel, c3y, tel_o);
break;
case 8:
u3x_cell(arg, &hed, &tel);
tot_s += _n_comp(ops, hed, c3n, c3n);
tot_s += _n_emit(ops, (c3y == los_o) ? SNOL : SNOC);
tot_s += _n_comp(ops, tel, c3y, tel_o);
break;
case 9:
u3x_cell(arg, &hed, &tel);
if ( 3 == u3qc_cap(hed) ) {
u3_noun mac = u3nq(7, u3k(tel), 2, u3nt(u3nc(0, 1), 0, u3k(hed)));
tot_s += _n_comp(ops, mac, tel_o);
u3z(mac);
}
else {
op_y = (c3y == tel_o)
? (hed < 0xFF ? TICB : hed < 0xFFFF ? TICS : TICK)
: (hed < 0xFF ? KICB : hed < 0xFFFF ? KICS : KICK);
tot_s += _n_comp(ops, tel, los_o, c3n);
tot_s += _n_emit(ops, u3nc(op_y, u3k(hed)));
}
break;
case 10:
u3x_cell(arg, &hed, &tel);
tot_s += _n_bint(ops, hed, tel, los_o, tel_o);
break;
case 11:
u3x_cell(arg, &hed, &tel);
tot_s += _n_comp(ops, hed, c3n, c3n);
tot_s += _n_emit(ops, SWAP);
tot_s += _n_comp(ops, tel, c3n, c3n);
tot_s += _n_emit(ops, (c3y == los_o) ? WILS : WISH);
break;
default:
u3m_bail(c3__exit);
return 0;
}
return tot_s;
}
static void _n_print_byc(c3_y* pog);
/* _n_asm(): assemble an accumulated list of instructions (i.e. from _n_comp)
*/
static c3_y*
_n_asm(u3_noun ops, c3_s len_s)
{
u3_noun top = ops;
c3_y* buf_y = u3a_malloc(sizeof(c3_y) * (len_s+1));
c3_s i_s = len_s;
buf_y[i_s] = HALT;
while ( i_s-- > 0 ) {
u3_noun op = u3h(ops);
if ( c3y == u3ud(op) ) {
buf_y[i_s] = (c3_y) u3h(ops);
}
else {
u3_noun cod = u3h(op);
switch ( cod ) {
case SBIP:
case SBIN:
case KICB:
case TICB:
case FRAB:
buf_y[i_s--] = (c3_y) u3t(op);
buf_y[i_s] = (c3_y) cod;
break;
case KICS:
case TICS:
case FRAS:
case SKIP:
case SKIN: {
c3_s off_s = u3t(op);
buf_y[i_s--] = (c3_y) (off_s >> 8);
buf_y[i_s--] = (c3_y) off_s;
buf_y[i_s] = (c3_y) cod;
break;
}
case FRAG:
case QUOT:
case QUIP:
case TICK:
case KICK: {
c3_w non_w = u3k(u3t(op));
buf_y[i_s--] = (c3_y) (non_w >> 24);
buf_y[i_s--] = (c3_y) (non_w >> 16);
buf_y[i_s--] = (c3_y) (non_w >> 8);
buf_y[i_s--] = (c3_y) non_w;
buf_y[i_s] = (c3_y) cod;
break;
}
default:
u3m_bail(c3__exit);
return 0;
}
}
ops = u3t(ops);
}
u3z(top);
return buf_y;
}
/* _n_push(): push a noun onto the stack. RETAIN
* mov: -1 north, 1 south
* off: 0 north, -1 south
*/
static inline void
_n_push(c3_ys mov, c3_ys off, u3_noun a)
{
u3R->cap_p += mov;
u3_noun* p = u3to(u3_noun, u3R->cap_p + off);
//u3_noun* p = (u3_noun*) u3a_push(sizeof(u3_noun));
*p = a;
}
/* _n_peek(): pointer to noun at top of stack
* off: 0 north, -1 south
*/
static inline u3_noun*
_n_peek(c3_ys off)
{
return u3to(u3_noun, u3R->cap_p + off);
//return (u3_noun*) u3a_peek(sizeof(u3_noun));
}
/* _n_peet(): address of the next-to-top of stack
* mov: -1 north, 1 south
* off: 0 north, -1 south
*/
static inline u3_noun*
_n_peet(c3_ys mov, c3_ys off)
{
return u3to(u3_noun, (u3R->cap_p - mov) + off);
}
/* _n_pop(): pop a noun from the cap stack
* mov: -1 north, 1 south
*/
static inline void
_n_pop(c3_ys mov)
{
u3R->cap_p -= mov;
}
/* _n_pep(): pop and return noun from the cap stack
* mov: -1 north, 1 south
* off: 0 north, -1 south
*/
static inline u3_noun
_n_pep(c3_ys mov, c3_ys off)
{
u3_noun r = *(_n_peek(off));
_n_pop(mov);
return r;
}
/* _n_toss(): pep and lose
*/
static inline void
_n_toss(c3_ys mov, c3_ys off)
{
u3z(_n_pep(mov, off));
}
/* _n_rean(): read a c3_s from the bytecode stream
*/
static inline c3_s
_n_resh(c3_y* buf, c3_s* ip_s)
{
c3_y les = buf[(*ip_s)++];
c3_y mos = buf[(*ip_s)++];
return les | (mos << 8);
}
/* _n_rean(): read a noun from the bytecode stream
*/
static inline u3_noun
_n_rean(c3_y* buf, c3_s* ip_s)
{
c3_y one = buf[(*ip_s)++],
two = buf[(*ip_s)++],
tre = buf[(*ip_s)++],
qua = buf[(*ip_s)++];
return one | (two << 8) | (tre << 16) | (qua << 24);
}
/* _n_bite(): compile a nock formula to bytecode
*/
static inline c3_y*
_n_bite(u3_noun fol)
{
u3_noun bok = u3_nul;
c3_s len_s = _n_comp(&bok, fol, c3n, c3y);
c3_y* buf_y = _n_asm(bok, len_s);
u3m_p("fol", fol);
_n_print_byc(buf_y);
return buf_y;
}
/* _n_find(): return bytecode for given formula. fol is RETAINED.
*/
static inline c3_y*
_n_find(u3_noun fol)
{
u3_noun got = u3h_get(u3R->byc.har_p, fol);
if ( u3_none != got ) {
return u3a_into(got);
}
else {
c3_y* gop = _n_bite(fol);
got = u3a_outa(gop);
u3h_put(u3R->byc.har_p, fol, got);
return gop;
}
}
/* _n_swap(): swap two items on the top of the stack, return pointer to top
*/
static inline u3_noun*
_n_swap(c3_ys mov, c3_ys off)
{
u3_noun* up = _n_peek(off);
u3_noun* top = _n_peet(mov, off);
u3_noun tmp = *up;
*up = *top;
*top = tmp;
return top;
}
/* _n_kale(): bail(exit) if not cell
*/
static inline u3_noun
_n_kale(u3_noun a)
{
if ( c3n == u3du(a) ) {
u3m_bail(c3__exit);
}
return a;
}
typedef struct {
c3_y* pog;
c3_s ip_s;
} burnframe;
/* _n_burn(): pog: program
* bus: subject
* mov: -1 north, 1 south
* off: 0 north, -1 south
*/
static u3_noun
_n_burn(c3_y* pog, u3_noun bus, c3_ys mov, c3_ys off)
{
/* OPCODE TABLE */
static void* lab[] = {
&&do_halt, &&do_copy, &&do_toss,
&&do_swap, &&do_swat,
&&do_skip, &&do_skin,
&&do_sbip, &&do_sbin,
&&do_cons, &&do_snoc,
&&do_head, &&do_tail,
&&do_frag, &&do_fras, &&do_frab,
&&do_quot, &&do_quip,
&&do_nock, &&do_noct,
&&do_deep, &&do_peep,
&&do_bump, &&do_same,
&&do_kick, &&do_kics, &&do_kicb,
&&do_tick, &&do_tics, &&do_ticb,
&&do_wish, &&do_fast,
&&do_cush, &&do_drop,
&&do_pumo, &&do_gemo,
&&do_heck, &&do_slog, &&do_bail
};
c3_s sip_s, ip_s = 0;
u3_noun* top;
u3_noun* up;
u3_noun x, o;
u3p(void) empty;
burnframe* fam;
empty = u3R->cap_p;
_n_push(mov, off, bus);
#define BURN() goto *lab[pog[ip_s++]]
BURN();
while ( 1 ) {
do_halt: // [product subject ...burnframes...]
x = _n_pep(mov, off);
_n_toss(mov);
if ( empty == u3R->cap_p ) {
return x;
}
else {
fam = u3to(burnframe, u3R->cap_p) + off;
pog = fam->pog;
ip_s = fam->ip_s;
u3R->cap_p = u3of(burnframe, fam - mov);
_n_push(mov, off, x);
BURN();
}
do_copy:
top = _n_peek(off);
_n_push(mov, off, u3k(*top));
BURN();
do_swap:
top = _n_peek(off);
up = _n_peet(mov, off);
x = *top;
*top = *up;
*up = x;
BURN();
do_toss:
_n_toss(mov, off);
BURN();
do_bail:
u3m_bail(c3__exit);
return u3_none;
do_auto: // [tel bus hed]
x = _n_pep(mov, off); // [bus hed]
top = _n_swap(mov, off); // [hed bus]
*top = u3nc(*top, x); // [pro bus]
BURN();
do_ault: // [tel bus hed]
x = _n_pep(mov, off); // [bus hed]
_n_toss(mov, off); // [hed]
top = _n_peek(off);
*top = u3nc(*top, x); // [pro]
BURN();
do_head:
top = _n_peek(off);
_n_push(u3k(u3h(_n_kale(*top))));
BURN();
do_held:
top = _n_peek(off);
o = _n_kale(*top);
*top = u3k(u3h(o));
u3z(o);
BURN();
do_tail:
top = _n_peek(off);
_n_push(u3k(u3t(_n_kale(*top))));
BURN();
do_tall:
top = _n_peek(off);
o = _n_kale(*top);
*top = u3k(u3t(o));
u3z(o);
BURN();
do_fras:
x = _n_resh(pog, &ip_s);
goto frag_in;
do_frag:
x = _n_rean(pog, &ip_s);
goto frag_in;
do_frab:
x = pog[ip_s++];
frag_in:
top = _n_peek(off);
_n_push(u3k(u3x_at(x, *top)));
BURN();
do_flas:
x = _n_resh(pog, &ip_s);
goto flag_in;
do_flag:
x = _n_rean(pog, &ip_s);
goto flag_in;
do_flab:
x = pog[ip_s++];
flag_in:
top = _n_peek(off);
o = *top;
*top = u3k(u3x_at(x, o));
u3z(o);
BURN();
do_lils:
_n_toss(mov, off);
do_litb:
x = _n_resh(pog, &ip_s);
goto quot_in;
do_liln:
_n_toss(mov, off);
do_litn:
x = _n_rean(pog, &ip_s);
goto quot_in;
do_lilb:
_n_toss(mov, off);
do_litb:
x = pog[ip_s++];
quot_in:
_n_push(mov, off, u3k(x));
BURN();
do_nolt: // [fol old bus]
o = _n_pep(mov, off); // [old bus]
_n_toss(mov, off); // [bus]
goto noct_in;
do_nolk: // [fol old bus]
o = _n_pep(mov, off); // [old bus]
_n_toss(mov, off); // [bus]
goto nock_in;
do_noct: // [fol old bus]
o = _n_pep(mov, off); // [old bus]
_n_swap(mov, off); // [bus old]
goto noct_in;
do_nock: // [fol old bus]
o = _n_pep(mov, off); // [old bus]
_n_swap(mov, off); // [bus old]
nock_in:
x = _n_pep(mov, off);
fam = u3to(burnframe, u3R->cap_p) + off + mov;
u3R->cap_p = u3of(burnframe, fam);
fam->ip_s = ip_s;
fam->pog = pog;
_n_push(mov, off, x);
noct_in:
pog = _n_find(o);
ip_s = 0;
BURN();
do_deep:
top = _n_peek(off);
o = *top;
*top = u3du(o);
u3z(o);
BURN();
do_bump:
top = _n_peek(off);
o = *top;
*top = u3i_vint(o);
u3z(o);
BURN();
do_same:
x = _n_pep(mov, off);
top = _n_swap(mov, off);
o = *top;
*top = u3r_sing(x, o);
u3z(o);
BURN();
do_salm:
x = _n_pep(mov, off);
_n_toss(mov, off);
top = _n_peek(off);
o = *top;
*top = u3r_sing(x, o);
u3z(o);
BURN();
do_skip:
ip_s += _n_resh(pog, &ip_s);
BURN();
do_sbip:
ip_s += pog[ip_s] + 1;
BURN();
do_skin:
sip_s = _n_resh(pog, &ip_s);
goto skin_in;
do_sbin:
sip_s = pog[ip_s++];
skin_in:
x = _n_pep(mov, off);
if ( c3n == x ) {
ip_s += sip_s;
}
else if ( c3y != x ) {
u3m_bail(c3__exit);
return u3_none;
}
BURN();
do_snoc: // [hed tel]
x = _n_pep(mov, off);
top = _n_peek(off);
*top = u3nc(x, *top);
BURN();
do_snol:
x = _n_pep(mov, off);
o = _n_pep(mov, off);
x = u3nc(x, o);
top = _n_peek(off);
o = *top;
*top = x;
u3z(o);
BURN();
do_kics:
x = _n_resh(pog, &ip_s);
goto kick_in;
do_kick:
x = _n_rean(pog, &ip_s);
goto kick_in;
do_kicb:
x = pog[ip_s++];
kick_in:
top = _n_peek(off);
o = *top;
u3t_off(noc_o);
*top = u3j_kick(o, x);
u3t_on(noc_o);
if ( u3_none == *top ) {
u3_noun fol = u3x_at(x, o);
_n_toss(mov);
fam = u3to(burnframe, u3R->cap_p) + off + mov;
u3R->cap_p = u3of(burnframe, fam);
fam->ip_s = ip_s;
fam->pog = pog;
pog = _n_find(fol);
ip_s = 0;
_n_push(mov, off, o);
}
BURN();
do_tics:
x = _n_resh(pog, &ip_s);
goto tick_in;
do_tick:
x = _n_rean(pog, &ip_s);
goto tick_in;
do_ticb:
x = pog[ip_s++];
tick_in:
top = _n_peek(off);
o = *top;
u3t_off(noc_o);
*top = u3j_kick(o, x);
u3t_on(noc_o);
if ( u3_none == *top ) {
u3_noun fol = u3r_at(x, o);
*top = o;
pog = _n_find(fol);
ip_s = 0;
}
BURN();
do_wils: // [gof bus ref]
o = _n_pep(mov,off); // [bus ref]
_n_toss(mov, off); // [ref]
top = _n_peek(off);
goto wish_in;
do_wish: // [gof bus ref]
o = _n_pep(mov,off); // [bus ref]
top = _n_swap(mov, off); // [ref bus]
wish_in:
u3t_off(noc_o);
x = u3m_soft_esc(u3k(o), *top);
u3t_on(noc_o);
if ( c3n == u3du(x) ) {
u3m_bail(u3nt(1, o, 0));
return u3_none;
}
else if ( c3n == u3du(u3t(x)) ) {
// replace with proper error stack push
u3t_push(u3nc(c3__hunk, _n_mush(o)));
u3m_bail(c3__exit);
return u3_none;
}
else {
u3z(o);
*top = u3k(u3t(u3t(x)));
u3z(x);
BURN();
}
do_cush:
x = _n_rean(pog, &ip_s);
o = _n_pep(mov, off);
u3t_push(u3nc(u3k(x), o));
BURN();
do_drop:
u3t_drop();
BURN();
do_heck:
x = _n_pep(mov, off);
if ( c3y == u3ud(x) ) {
u3t_off(noc_o);
u3t_heck(x);
u3t_on(noc_o);
}
else {
u3z(x);
}
BURN();
do_slog:
x = _n_pep(mov, off);
if ( !(u3C.wag_w & u3o_quiet) ) {
u3t_off(noc_o);
u3t_slog(x);
u3t_on(noc_o);
}
else {
u3z(x);
}
BURN();
do_falt: // [pro bus clu]
o = _n_pep(mov, off); // [bus clu]
_n_toss(); // [clu]
top = _n_peek(off);
goto fast_in;
do_fast: // [pro bus clu]
o = _n_pep(mov, off); // [bus clu]
top = _n_swap(mov, off); // [clu bus]
fast_in:
u3t_off(noc_o);
u3j_mine(*top, u3k(o));
u3t_on(noc_o);
u3z(*top);
*top = o;
BURN();
do_skim:
sip_s = _n_resh(pog, &ip_s);
goto skim_in;
do_slim:
sip_s = _n_resh(pog, &ip_s);
goto slim_in;
do_slib:
sip_s = pog[ip_s++];
goto slim_in;
do_skib:
sip_s = pog[ip_s++];
skim_in:
top = _n_peek(off);
_n_push(mov, off, u3k(*top));
slim_in:
o = _n_rean(pog, &ip_s);
x = u3nc(u3k(o), _n_pep(mov, off));
o = u3z_find(144 + c3__nock, x);
if ( u3_none == o ) {
_n_push(mov, off, x);
_n_push(mov, off, u3k(u3t(x)));
}
else {
ip_s += sip_s;
_n_push(o);
u3z(x);
}
BURN();
do_save:
x = _n_pep(mov, off);
top = _n_peek(off);
o = *top;
if ( &(u3H->rod_u) != u3R ) {
u3z_save(144 + c3__nock, o, x);
}
*top = x;
u3z(o);
BURN();
}
}
static void
_n_print_byc(c3_y* pog)
{
static char* names[] = {
"halt", "copy", "toss",
"swap", "swat",
"skip", "skin",
"sbip", "sbin",
"cons", "snoc",
"head", "tail",
"frag", "fras", "frab",
"quot", "quip",
"nock", "noct",
"deep", "peep",
"bump", "same",
"kick", "kics", "kicb",
"tick", "tics", "ticb",
"wish", "fast",
"cush", "drop",
"pumo", "gemo",
"heck", "slog", "bail"
};
c3_s ip_s = 0;
printf("bytecode: {");
int first = 1;
while ( pog[ip_s] ) {
if ( first ) {
first = 0;
}
else {
printf(" ");
}
switch ( pog[ip_s] ) {
default:
printf("%s", names[pog[ip_s++]]);
break;
case SBIP:
case SBIN:
case KICB:
case TICB:
case FRAB:
printf("[%s ", names[pog[ip_s++]]);
printf("%d]", pog[ip_s++]);
break;
case KICS:
case TICS:
case FRAS:
case SKIP:
case SKIN:
printf("[%s ", names[pog[ip_s++]]);
printf("%d]", _n_resh(pog, &ip_s));
break;
case QUOT:
case QUIP:
case TICK:
case FRAG:
case KICK:
printf("[%s ", names[pog[ip_s++]]);
printf("%d]", _n_rean(pog, &ip_s));
break;
}
}
printf(" halt}\r\n");
}
static void _n_print_stack(u3p(u3_noun) empty) {
c3_w cur_p = u3R->cap_p;
printf("[");
int first = 1;
while ( cur_p != empty ) {
if ( first ) {
first = 0;
}
else {
printf(" ");
}
if ( c3y == u3a_is_north(u3R) ) {
printf("%d", *(u3to(u3_noun, cur_p)));
cur_p++;
}
else {
printf("%d", *(u3to(u3_noun, cur_p-1)));
cur_p--;
}
}
printf("]\r\n");
}
/* _n_burn_on(): produce .*(bus fol) with bytecode interpreter
*/
static u3_noun
_n_burn_on(u3_noun bus, u3_noun fol)
{
c3_y* pog = _n_find(fol);
c3_ys mov, off;
u3z(fol);
if ( c3y == u3a_is_north(u3R) ) {
mov = -1;
off = 0;
}
else {
mov = 1;
off = -1;
}
return _n_burn(pog, bus, mov, off);
}
u3_noun
u3n_burn_on(u3_noun bus, u3_noun fol)
{
u3_noun pro;
u3t_on(noc_o);
pro = _n_burn_on(bus, fol);
u3t_off(noc_o);
return pro;
}
/* u3n_beep(): promote bytecode state.
*/
void
u3n_beep(u3p(u3h_root) har_p)
{
u3m_p("beep", 0);
}
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