/* If OBJ is a primitive object (roughly, immediate or number), write it to
PORT. Assumes the caller locks the PORT.
Returns the # of characters written, or #f if OBJ is not a primitive object.
*/
ScmObj Scm__WritePrimitive(ScmObj obj, ScmPort *port, ScmWriteContext *ctx)
{
#define CASE_ITAG_RET(obj, str) \
case SCM_ITAG(obj): \
Scm_PutzUnsafe(str, -1, port); \
return SCM_MAKE_INT(sizeof(str)-1);
if (SCM_IMMEDIATEP(obj)) {
switch (SCM_ITAG(obj)) {
CASE_ITAG_RET(SCM_FALSE, "#f");
CASE_ITAG_RET(SCM_TRUE, "#t");
CASE_ITAG_RET(SCM_NIL, "()");
CASE_ITAG_RET(SCM_EOF, "#<eof>");
CASE_ITAG_RET(SCM_UNDEFINED, "#<undef>");
CASE_ITAG_RET(SCM_UNBOUND, "#<unbound>");
default:
Scm_Panic("write: unknown itag object: %08x", SCM_WORD(obj));
}
}
else if (SCM_INTP(obj)) {
char buf[SPBUFSIZ];
int k = snprintf(buf, SPBUFSIZ, "%ld", SCM_INT_VALUE(obj));
Scm_PutzUnsafe(buf, -1, port);
return SCM_MAKE_INT(k);
}
else if (SCM_CHARP(obj)) {
size_t k = write_char(SCM_CHAR_VALUE(obj), port, ctx);
return SCM_MAKE_INT(k);
}
else if (SCM_NUMBERP(obj)) {
return SCM_MAKE_INT(Scm_PrintNumber(port, obj, NULL));
}
return SCM_FALSE;
}
intptr_t Scm__CheckDictValue(ScmObj val, const char *file, int line)
{
if (val == NULL || SCM_UNBOUNDP(val)) {
Scm_Panic("[internal] attempted to set an invalid ScmObj value (%p) as a value of a dictionary, at %s:%d", val, file, line);
}
return (intptr_t)val;
}
/* If OBJ is a primitive object (roughly, immediate or number), write it to
PORT. Assumes the caller locks the PORT.
Returns the # of characters written, or #f if OBJ is not a primitive object.
*/
ScmObj Scm__WritePrimitive(ScmObj obj, ScmPort *port, ScmWriteContext *ctx)
{
const ScmWriteControls *wp = Scm_GetWriteControls(ctx, port->writeState);
#define CASE_ITAG_RET(obj, str) \
case SCM_ITAG(obj): \
Scm_PutzUnsafe(str, -1, port); \
return SCM_MAKE_INT(sizeof(str)-1);
if (SCM_IMMEDIATEP(obj)) {
switch (SCM_ITAG(obj)) {
CASE_ITAG_RET(SCM_FALSE, "#f");
CASE_ITAG_RET(SCM_TRUE, "#t");
CASE_ITAG_RET(SCM_NIL, "()");
CASE_ITAG_RET(SCM_EOF, "#<eof>");
CASE_ITAG_RET(SCM_UNDEFINED, "#<undef>");
CASE_ITAG_RET(SCM_UNBOUND, "#<unbound>");
default:
Scm_Panic("write: unknown itag object: %08x", SCM_WORD(obj));
}
}
else if (SCM_INTP(obj) && wp->printBase == 10 && !wp->printRadix) {
/* Shortcut to avoid allocation */
char buf[SPBUFSIZ];
int k = snprintf(buf, SPBUFSIZ, "%ld", SCM_INT_VALUE(obj));
Scm_PutzUnsafe(buf, -1, port);
return SCM_MAKE_INT(k);
}
else if (SCM_CHARP(obj)) {
size_t k = write_char(SCM_CHAR_VALUE(obj), port, ctx);
return SCM_MAKE_INT(k);
}
else if (SCM_NUMBERP(obj)) {
ScmNumberFormat fmt;
Scm_NumberFormatInit(&fmt);
fmt.radix = wp->printBase;
if (wp->printRadix) fmt.flags |= SCM_NUMBER_FORMAT_ALT_RADIX;
return SCM_MAKE_INT(Scm_PrintNumber(port, obj, &fmt));
}
/* PVREF only appears in pattern temlate in the current macro expander.
It will be go away once we rewrite the expander. */
else if (SCM_PVREF_P(obj)) {
char buf[SPBUFSIZ];
int k = snprintf(buf, SPBUFSIZ, "#<pvar %ld.%ld>",
SCM_PVREF_LEVEL(obj), SCM_PVREF_COUNT(obj));
Scm_PutzUnsafe(buf, -1, port);
return SCM_MAKE_INT(k);
}
return SCM_FALSE;
}
void invoke_other_version(const char *version, int argc, char **argv)
{
static ScmObj invoke_other_version = SCM_UNDEFINED;
SCM_BIND_PROC(invoke_other_version, "%invoke-other-version",
Scm_GaucheInternalModule());
ScmEvalPacket epkt;
Scm_Apply(invoke_other_version,
SCM_LIST2(SCM_MAKE_STR_COPYING(version),
Scm_CStringArrayToList((const char**)argv, argc, 0)),
&epkt);
/* %invoke-other-version won't return. If we're here,
we even failed to call it. */
Scm_Panic("Failed to call %%invoke-other-version. Installation problem?");
}
static ScmObj vport_allocate(ScmClass *klass, ScmObj initargs)
{
ScmObj port;
vport *data = SCM_NEW(vport);
ScmPortVTable vtab;
int dir = 0;
data->getb_proc = SCM_FALSE;
data->getc_proc = SCM_FALSE;
data->gets_proc = SCM_FALSE;
data->ready_proc = SCM_FALSE;
data->putb_proc = SCM_FALSE;
data->putc_proc = SCM_FALSE;
data->puts_proc = SCM_FALSE;
data->flush_proc = SCM_FALSE;
data->close_proc = SCM_FALSE;
data->seek_proc = SCM_FALSE;
vtab.Getb = vport_getb;
vtab.Getc = vport_getc;
vtab.Getz = vport_getz;
vtab.Ready = vport_ready;
vtab.Putb = vport_putb;
vtab.Putc = vport_putc;
vtab.Putz = vport_putz;
vtab.Puts = vport_puts;
vtab.Flush = vport_flush;
vtab.Close = vport_close;
vtab.Seek = vport_seek;
if (Scm_SubtypeP(klass, SCM_CLASS_VIRTUAL_INPUT_PORT)) {
dir = SCM_PORT_INPUT;
} else if (Scm_SubtypeP(klass, SCM_CLASS_VIRTUAL_OUTPUT_PORT)) {
dir = SCM_PORT_OUTPUT;
} else {
Scm_Panic("vport_allocate: implementaion error (class wiring screwed?)");
}
port = Scm_MakeVirtualPort(klass, dir, &vtab);
SCM_PORT(port)->src.vt.data = data;
return port;
}
ScmObj Scm_ForkptyAndExec(ScmString *file, ScmObj args, ScmObj iomap,
ScmObj slaveterm, ScmSysSigset *mask)
{
int argc = Scm_Length(args);
char **argv;
const char *program;
int *fds;
int master;
pid_t pid;
struct termios *term = NULL;
if (argc < 1) {
Scm_Error("argument list must have at least one element: %S", args);
}
argv = Scm_ListToCStringArray(args, TRUE, NULL);
program = Scm_GetStringConst(file);
if (SCM_SYS_TERMIOS_P(slaveterm)) {
term = &SCM_SYS_TERMIOS(slaveterm)->term;
}
fds = Scm_SysPrepareFdMap(iomap);
if ((pid = forkpty(&master, NULL, term, NULL)) < 0) {
Scm_SysError("forkpty failed");
}
if (pid == 0) {
Scm_SysSwapFds(fds);
if (mask) {
Scm_ResetSignalHandlers(&mask->set);
Scm_SysSigmask(SIG_SETMASK, mask);
}
execvp(program, (char *const*)argv);
/* here, we failed */
Scm_Panic("exec failed: %s: %s", program, strerror(errno));
}
return Scm_Values2(Scm_MakeInteger(pid), SCM_MAKE_INT(master));
}
static void *oom_handler(size_t bytes)
{
Scm_Panic("out of memory (%lu). aborting...", bytes);
return NULL; /* dummy */
}
/*
* Entry point of initlalizing Gauche runtime
*/
void Scm_Init(const char *signature)
{
/* make sure the main program links the same version of libgauche */
if (strcmp(signature, GAUCHE_SIGNATURE) != 0) {
Scm_Panic("libgauche ABI version mismatch: libgauche %s, expected %s",
GAUCHE_SIGNATURE, signature);
}
/* Some platforms require this. It is harmless if GC is
already initialized, so we call it here just in case. */
GC_init();
/* Set up GC parameters. We need to call finalizers at the safe
point of VM loop, so we disable auto finalizer invocation, and
ask GC to call us back when finalizers are queued. */
GC_oom_fn = oom_handler;
GC_finalize_on_demand = TRUE;
GC_finalizer_notifier = finalizable;
(void)SCM_INTERNAL_MUTEX_INIT(cond_features.mutex);
/* Initialize components. The order is important, for some components
rely on the other components to be initialized. */
Scm__InitParameter();
Scm__InitVM();
Scm__InitSymbol();
Scm__InitModule();
Scm__InitNumber();
Scm__InitChar();
Scm__InitClass();
Scm__InitModulePost();
Scm__InitCollection();
Scm__InitExceptions();
Scm__InitProc();
Scm__InitPort();
Scm__InitWrite();
Scm__InitCode();
Scm__InitMacro();
Scm__InitLoad();
Scm__InitRegexp();
Scm__InitRead();
Scm__InitSignal();
Scm__InitSystem();
Scm_Init_libalpha();
Scm_Init_libbool();
Scm_Init_libchar();
Scm_Init_libcode();
Scm_Init_libdict();
Scm_Init_libeval();
Scm_Init_libexc();
Scm_Init_libfmt();
Scm_Init_libio();
Scm_Init_liblazy();
Scm_Init_liblist();
Scm_Init_libmisc();
Scm_Init_libmod();
Scm_Init_libnum();
Scm_Init_libobj();
Scm_Init_libproc();
Scm_Init_librx();
Scm_Init_libstr();
Scm_Init_libsym();
Scm_Init_libsys();
Scm_Init_libvec();
Scm_Init_compile();
Scm_Init_libomega();
Scm__InitCompaux();
Scm_SelectModule(Scm_GaucheModule());
Scm__InitAutoloads();
Scm_SelectModule(Scm_UserModule());
/* Final setup of cond-features alist. */
init_cond_features();
#ifdef GAUCHE_USE_PTHREADS
/* a trick to make sure the gc thread object is linked */
ptr_pthread_create = (int (*)(void))GC_pthread_create;
#endif
}
ScmObj Scm_VaCons(va_list pvar)
{
Scm_Panic("Scm_VaCons: not implemented");
return SCM_UNDEFINED;
}
/* Trick: The hashtable contains positive integer after the walk pass.
If we emit a reference tag N, we replace the entry's value to -N,
so that we can distinguish whether we've already emitted the object
or not. */
static void write_rec(ScmObj obj, ScmPort *port, ScmWriteContext *ctx)
{
char numbuf[50]; /* enough to contain long number */
ScmObj stack = SCM_NIL;
ScmWriteState *st = port->writeState;
ScmHashTable *ht = (st? st->sharedTable : NULL);
int stack_depth = 0;
#define PUSH(elt) \
do { \
stack = Scm_Cons(elt, stack); \
if (!ht && ++stack_depth > STACK_LIMIT) { \
Scm_Error("write recursed too deeply; " \
"maybe a circular structure?"); \
} \
} while (0)
#define POP() \
do { \
stack = SCM_CDR(stack); \
if (ht) stack_depth--; \
} while (0)
for (;;) {
write1:
if (ctx->flags & WRITE_LIMITED) {
if (port->src.ostr.length >= ctx->limit) return;
}
/* number may be heap allocated, but we don't use srfi-38 notation. */
if (!SCM_PTRP(obj) || SCM_NUMBERP(obj)) {
if (SCM_FALSEP(Scm__WritePrimitive(obj, port, ctx))) {
Scm_Panic("write: got a bogus object: %08x", SCM_WORD(obj));
}
goto next;
}
if ((SCM_STRINGP(obj) && SCM_STRING_SIZE(obj) == 0)
|| (SCM_VECTORP(obj) && SCM_VECTOR_SIZE(obj) == 0)) {
/* we don't put a reference tag for these */
write_general(obj, port, ctx);
goto next;
}
if (ht) {
ScmObj e = Scm_HashTableRef(ht, obj, SCM_MAKE_INT(1));
long k = SCM_INT_VALUE(e);
if (k <= 0) {
/* This object is already printed. */
snprintf(numbuf, 50, "#%ld#", -k);
Scm_PutzUnsafe(numbuf, -1, port);
goto next;
} else if (k > 1) {
/* This object will be seen again. Put a reference tag. */
ScmWriteState *s = port->writeState;
snprintf(numbuf, 50, "#%d=", s->sharedCounter);
Scm_HashTableSet(ht, obj, SCM_MAKE_INT(-s->sharedCounter), 0);
s->sharedCounter++;
Scm_PutzUnsafe(numbuf, -1, port);
}
}
/* Writes aggregates */
if (SCM_PAIRP(obj)) {
/* special case for quote etc.
NB: we need to check if we've seen SCM_CDR(obj), otherwise we'll
get infinite recursion for the case like (cdr '#1='#1#). */
if (SCM_PAIRP(SCM_CDR(obj)) && SCM_NULLP(SCM_CDDR(obj))
&& (!ht
|| SCM_FALSEP(Scm_HashTableRef(ht, SCM_CDR(obj), SCM_FALSE)))){
const char *prefix = NULL;
if (SCM_CAR(obj) == SCM_SYM_QUOTE) {
prefix = "'";
} else if (SCM_CAR(obj) == SCM_SYM_QUASIQUOTE) {
prefix = "`";
} else if (SCM_CAR(obj) == SCM_SYM_UNQUOTE) {
prefix = ",";
} else if (SCM_CAR(obj) == SCM_SYM_UNQUOTE_SPLICING) {
prefix = ",@";
}
if (prefix) {
Scm_PutzUnsafe(prefix, -1, port);
obj = SCM_CADR(obj);
goto write1;
}
}
/* normal case */
Scm_PutcUnsafe('(', port);
PUSH(Scm_Cons(SCM_TRUE, SCM_CDR(obj)));
obj = SCM_CAR(obj);
goto write1;
} else if (SCM_VECTORP(obj)) {
Scm_PutzUnsafe("#(", -1, port);
PUSH(Scm_Cons(SCM_MAKE_INT(1), obj));
obj = SCM_VECTOR_ELEMENT(obj, 0);
goto write1;
} else {
/* string or user-defined object */
write_general(obj, port, ctx);
goto next;
}
next:
while (SCM_PAIRP(stack)) {
ScmObj top = SCM_CAR(stack);
SCM_ASSERT(SCM_PAIRP(top));
if (SCM_INTP(SCM_CAR(top))) {
/* we're processing a vector */
ScmObj v = SCM_CDR(top);
int i = SCM_INT_VALUE(SCM_CAR(top));
int len = SCM_VECTOR_SIZE(v);
if (i == len) { /* we've done this vector */
Scm_PutcUnsafe(')', port);
POP();
} else {
Scm_PutcUnsafe(' ', port);
obj = SCM_VECTOR_ELEMENT(v, i);
SCM_SET_CAR(top, SCM_MAKE_INT(i+1));
goto write1;
}
} else {
/* we're processing a list */
ScmObj v = SCM_CDR(top);
if (SCM_NULLP(v)) { /* we've done with this list */
Scm_PutcUnsafe(')', port);
POP();
} else if (!SCM_PAIRP(v)) {
Scm_PutzUnsafe(" . ", -1, port);
obj = v;
SCM_SET_CDR(top, SCM_NIL);
goto write1;
} else if (ht && !SCM_EQ(Scm_HashTableRef(ht, v, SCM_MAKE_INT(1)), SCM_MAKE_INT(1))) {
/* cdr part is shared */
Scm_PutzUnsafe(" . ", -1, port);
obj = v;
SCM_SET_CDR(top, SCM_NIL);
goto write1;
} else {
Scm_PutcUnsafe(' ', port);
obj = SCM_CAR(v);
SCM_SET_CDR(top, SCM_CDR(v));
goto write1;
}
}
}
break;
}
#undef PUSH
#undef POP
}
/* Trick: The hashtable contains positive integer after the walk pass.
If we emit a reference tag N, we replace the entry's value to -N,
so that we can distinguish whether we've already emitted the object
or not. */
static void write_rec(ScmObj obj, ScmPort *port, ScmWriteContext *ctx)
{
char numbuf[50]; /* enough to contain long number */
ScmObj stack = SCM_NIL;
ScmWriteState *st = port->writeState;
ScmHashTable *ht = (st? st->sharedTable : NULL);
const ScmWriteControls *wp = Scm_GetWriteControls(ctx, st);
int stack_depth = 0; /* only used when !ht */
#define PUSH(elt) \
do { \
stack = Scm_Cons(elt, stack); \
if (!ht && ++stack_depth > STACK_LIMIT) { \
Scm_Error("write recursed too deeply; " \
"maybe a circular structure?"); \
} \
} while (0)
#define POP() \
do { \
stack = SCM_CDR(stack); \
if (!ht) stack_depth--; \
} while (0)
#define CHECK_LEVEL() \
do { \
if (st) { \
if (wp->printLevel >= 0 && st->currentLevel >= wp->printLevel) { \
Scm_PutcUnsafe('#', port); \
goto next; \
} else { \
if (st) st->currentLevel++; \
} \
} \
} while (0)
for (;;) {
write1:
if (ctx->flags & WRITE_LIMITED) {
if (port->src.ostr.length >= ctx->limit) return;
}
/* number may be heap allocated, but we don't use srfi-38 notation. */
if (!SCM_PTRP(obj) || SCM_NUMBERP(obj)) {
if (SCM_FALSEP(Scm__WritePrimitive(obj, port, ctx))) {
Scm_Panic("write: got a bogus object: %08x", SCM_WORD(obj));
}
goto next;
}
if ((SCM_STRINGP(obj) && SCM_STRING_SIZE(obj) == 0)
|| (SCM_VECTORP(obj) && SCM_VECTOR_SIZE(obj) == 0)) {
/* we don't put a reference tag for these */
write_general(obj, port, ctx);
goto next;
}
/* obj is heap allocated and we may use label notation. */
if (ht) {
ScmObj e = Scm_HashTableRef(ht, obj, SCM_MAKE_INT(1));
long k = SCM_INT_VALUE(e);
if (k <= 0) {
/* This object is already printed. */
snprintf(numbuf, 50, "#%ld#", -k);
Scm_PutzUnsafe(numbuf, -1, port);
goto next;
} else if (k > 1) {
/* This object will be seen again. Put a reference tag. */
ScmWriteState *s = port->writeState;
snprintf(numbuf, 50, "#%d=", s->sharedCounter);
Scm_HashTableSet(ht, obj, SCM_MAKE_INT(-s->sharedCounter), 0);
s->sharedCounter++;
Scm_PutzUnsafe(numbuf, -1, port);
}
}
/* Writes aggregates */
if (SCM_PAIRP(obj)) {
CHECK_LEVEL();
/* special case for quote etc.
NB: we need to check if we've seen SCM_CDR(obj), otherwise we'll
get infinite recursion for the case like (cdr '#1='#1#). */
if (SCM_PAIRP(SCM_CDR(obj)) && SCM_NULLP(SCM_CDDR(obj))
&& (!ht
|| SCM_FALSEP(Scm_HashTableRef(ht, SCM_CDR(obj), SCM_FALSE)))){
const char *prefix = NULL;
if (SCM_CAR(obj) == SCM_SYM_QUOTE) {
prefix = "'";
} else if (SCM_CAR(obj) == SCM_SYM_QUASIQUOTE) {
prefix = "`";
} else if (SCM_CAR(obj) == SCM_SYM_UNQUOTE) {
prefix = ",";
} else if (SCM_CAR(obj) == SCM_SYM_UNQUOTE_SPLICING) {
prefix = ",@";
}
if (prefix) {
Scm_PutzUnsafe(prefix, -1, port);
obj = SCM_CADR(obj);
goto write1;
}
}
if (wp->printLength == 0) {
/* in this case we don't print the elements at all, so we need
to treat this specially. */
Scm_PutzUnsafe("(...)", -1, port);
if (st) st->currentLevel--;
goto next;
}
/* normal case */
Scm_PutcUnsafe('(', port);
PUSH(Scm_Cons(SCM_TRUE, Scm_Cons(SCM_MAKE_INT(1), SCM_CDR(obj))));
obj = SCM_CAR(obj);
goto write1;
} else if (SCM_VECTORP(obj)) {
CHECK_LEVEL();
if (wp->printLength == 0) {
/* in this case we don't print the elements at all, so we need
to treat this specially. */
Scm_PutzUnsafe("#(...)", -1, port);
if (st) st->currentLevel--;
goto next;
}
Scm_PutzUnsafe("#(", -1, port);
PUSH(Scm_Cons(SCM_MAKE_INT(1), obj));
obj = SCM_VECTOR_ELEMENT(obj, 0);
goto write1;
} else if (Scm_ClassOf(obj)->flags & SCM_CLASS_AGGREGATE) {
CHECK_LEVEL();
write_general(obj, port, ctx);
if (st) st->currentLevel--;
goto next;
} else {
write_general(obj, port, ctx);
goto next;
}
next:
while (SCM_PAIRP(stack)) {
ScmObj top = SCM_CAR(stack);
SCM_ASSERT(SCM_PAIRP(top));
if (SCM_INTP(SCM_CAR(top))) {
/* we're processing a vector */
ScmObj v = SCM_CDR(top);
int i = SCM_INT_VALUE(SCM_CAR(top));
int len = SCM_VECTOR_SIZE(v);
if (i == len) { /* we've done this vector */
Scm_PutcUnsafe(')', port);
POP();
} else if (wp->printLength >= 0 && wp->printLength <= i) {
Scm_PutzUnsafe(" ...)", -1, port);
POP();
} else {
Scm_PutcUnsafe(' ', port);
obj = SCM_VECTOR_ELEMENT(v, i);
SCM_SET_CAR(top, SCM_MAKE_INT(i+1));
goto write1;
}
} else {
/* we're processing a list */
SCM_ASSERT(SCM_PAIRP(SCM_CDR(top)));
long count = SCM_INT_VALUE(SCM_CADR(top));
ScmObj v = SCM_CDDR(top);
if (SCM_NULLP(v)) { /* we've done with this list */
Scm_PutcUnsafe(')', port);
POP();
} else if (!SCM_PAIRP(v)) {
/* Improper list. We treat aggregate types specially,
since such object at this position shouldn't increment
"level" - its content is regarded as the same level of
the current list.
*/
Scm_PutzUnsafe(" . ", -1, port);
if (Scm_ClassOf(v)->flags & SCM_CLASS_AGGREGATE) {
if (st) st->currentLevel--;
write_rec(v, port, ctx);
if (st) st->currentLevel++;
Scm_PutcUnsafe(')', port);
POP();
} else {
obj = v;
SCM_SET_CAR(SCM_CDR(top), SCM_MAKE_INT(count+1));
SCM_SET_CDR(SCM_CDR(top), SCM_NIL);
goto write1;
}
} else if (wp->printLength >= 0 && wp->printLength <= count) {
/* print-length limit reached */
Scm_PutzUnsafe(" ...)", -1, port);
POP();
} else if (ht && !SCM_EQ(Scm_HashTableRef(ht, v, SCM_MAKE_INT(1)), SCM_MAKE_INT(1))) {
/* cdr part is shared */
Scm_PutzUnsafe(" . ", -1, port);
obj = v;
SCM_SET_CAR(SCM_CDR(top), SCM_MAKE_INT(count+1));
SCM_SET_CDR(SCM_CDR(top), SCM_NIL);
goto write1;
} else {
Scm_PutcUnsafe(' ', port);
obj = SCM_CAR(v);
SCM_SET_CAR(SCM_CDR(top), SCM_MAKE_INT(count+1));
SCM_SET_CDR(SCM_CDR(top), SCM_CDR(v));
goto write1;
}
}
if (st) st->currentLevel--;
}
break;
}
#undef PUSH
#undef POP
#undef CHECK_DEPTH
}