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array.c
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/**********************************************************************
array.c -
$Author$
$Date$
created at: Fri Aug 6 09:46:12 JST 1993
Copyright (C) 1993-2002 Yukihiro Matsumoto
Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
Copyright (C) 2000 Information-technology Promotion Agency, Japan
**********************************************************************/
#include "ruby.h"
#include "util.h"
#include "st.h"
VALUE rb_cArray;
static ID id_cmp;
#define ARY_DEFAULT_SIZE 16
void
rb_mem_clear(mem, size)
register VALUE *mem;
register long size;
{
while (size--) {
*mem++ = Qnil;
}
}
static void
memfill(mem, size, val)
register VALUE *mem;
register long size;
register VALUE val;
{
while (size--) {
*mem++ = val;
}
}
#define ARY_TMPLOCK FL_USER1
static void
rb_ary_modify_check(ary)
VALUE ary;
{
if (OBJ_FROZEN(ary)) rb_error_frozen("array");
if (FL_TEST(ary, ARY_TMPLOCK))
rb_raise(rb_eTypeError, "can't modify array during sort");
if (!OBJ_TAINTED(ary) && rb_safe_level() >= 4)
rb_raise(rb_eSecurityError, "Insecure: can't modify array");
}
static void
rb_ary_modify(ary)
VALUE ary;
{
VALUE *ptr;
rb_ary_modify_check(ary);
if (!FL_TEST(ary, ELTS_SHARED)) return;
ptr = ALLOC_N(VALUE, RARRAY(ary)->len);
FL_UNSET(ary, ELTS_SHARED);
RARRAY(ary)->aux.capa = RARRAY(ary)->len;
MEMCPY(ptr, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
RARRAY(ary)->ptr = ptr;
}
VALUE
rb_ary_freeze(ary)
VALUE ary;
{
return rb_obj_freeze(ary);
}
static VALUE
rb_ary_frozen_p(ary)
VALUE ary;
{
if (FL_TEST(ary, FL_FREEZE|ARY_TMPLOCK))
return Qtrue;
return Qfalse;
}
static VALUE
rb_ary_s_alloc(klass)
VALUE klass;
{
NEWOBJ(ary, struct RArray);
OBJSETUP(ary, klass, T_ARRAY);
ary->len = 0;
ary->ptr = 0;
ary->aux.capa = 0;
return (VALUE)ary;
}
static VALUE
ary_new(klass, len)
VALUE klass;
long len;
{
VALUE ary = rb_obj_alloc(klass);
if (len < 0) {
rb_raise(rb_eArgError, "negative array size (or size too big)");
}
if (len > 0 && len*sizeof(VALUE) <= 0) {
rb_raise(rb_eArgError, "array size too big");
}
if (len == 0) len++;
RARRAY(ary)->ptr = ALLOC_N(VALUE, len);
RARRAY(ary)->aux.capa = len;
return ary;
}
VALUE
rb_ary_new2(len)
long len;
{
return ary_new(rb_cArray, len);
}
VALUE
rb_ary_new()
{
return rb_ary_new2(ARY_DEFAULT_SIZE);
}
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#define va_init_list(a,b) va_start(a,b)
#else
#include <varargs.h>
#define va_init_list(a,b) va_start(a)
#endif
VALUE
#ifdef HAVE_STDARG_PROTOTYPES
rb_ary_new3(long n, ...)
#else
rb_ary_new3(n, va_alist)
long n;
va_dcl
#endif
{
va_list ar;
VALUE ary;
long i;
if (n < 0) {
rb_raise(rb_eIndexError, "negative number of items(%d)", n);
}
ary = rb_ary_new2(n<ARY_DEFAULT_SIZE?ARY_DEFAULT_SIZE:n);
va_init_list(ar, n);
for (i=0; i<n; i++) {
RARRAY(ary)->ptr[i] = va_arg(ar, VALUE);
}
va_end(ar);
RARRAY(ary)->len = n;
return ary;
}
VALUE
rb_ary_new4(n, elts)
long n;
VALUE *elts;
{
VALUE ary;
ary = rb_ary_new2(n);
if (n > 0 && elts) {
MEMCPY(RARRAY(ary)->ptr, elts, VALUE, n);
}
RARRAY(ary)->len = n;
return ary;
}
VALUE
rb_assoc_new(car, cdr)
VALUE car, cdr;
{
VALUE ary;
ary = rb_ary_new2(2);
RARRAY(ary)->ptr[0] = car;
RARRAY(ary)->ptr[1] = cdr;
RARRAY(ary)->len = 2;
return ary;
}
static VALUE
to_ary(ary)
VALUE ary;
{
return rb_convert_type(ary, T_ARRAY, "Array", "to_ary");
}
static VALUE
to_ary_failed(failed)
int *failed;
{
*failed = Qtrue;
}
static VALUE rb_ary_replace _((VALUE, VALUE));
static VALUE
rb_ary_initialize(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
long len;
VALUE size, val;
rb_ary_modify(ary);
if (rb_scan_args(argc, argv, "02", &size, &val) == 0) {
RARRAY(ary)->len = 0;
if (rb_block_given_p()) {
rb_warning("given block not used");
}
return ary;
}
if (argc == 1 && !FIXNUM_P(size)) {
val = rb_check_convert_type(size, T_ARRAY, "Array", "to_ary");
if (!NIL_P(val)) {
rb_ary_replace(ary, val);
return ary;
}
}
len = NUM2LONG(size);
if (len < 0) {
rb_raise(rb_eArgError, "negative array size");
}
if (len > 0 && len*sizeof(VALUE) <= 0) {
rb_raise(rb_eArgError, "array size too big");
}
if (len > RARRAY(ary)->aux.capa) {
RARRAY(ary)->aux.capa = len;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
if (rb_block_given_p()) {
long i;
if (argc > 1) {
rb_raise(rb_eArgError, "wrong number of arguments");
}
for (i=0; i<len; i++) {
RARRAY(ary)->ptr[i] = rb_yield(INT2NUM(i));
RARRAY(ary)->len = i+1;
}
}
else {
memfill(RARRAY(ary)->ptr, len, val);
RARRAY(ary)->len = len;
}
return ary;
}
static VALUE
rb_ary_s_create(argc, argv, klass)
int argc;
VALUE *argv;
VALUE klass;
{
VALUE ary = rb_obj_alloc(klass);
if (argc != 0) {
RARRAY(ary)->ptr = ALLOC_N(VALUE, argc);
MEMCPY(RARRAY(ary)->ptr, argv, VALUE, argc);
}
RARRAY(ary)->len = RARRAY(ary)->aux.capa = argc;
return ary;
}
void
rb_ary_store(ary, idx, val)
VALUE ary;
long idx;
VALUE val;
{
rb_ary_modify(ary);
if (idx < 0) {
idx += RARRAY(ary)->len;
if (idx < 0) {
rb_raise(rb_eIndexError, "index %d out of array",
idx - RARRAY(ary)->len);
}
}
if (idx >= RARRAY(ary)->aux.capa) {
long capa_inc = RARRAY(ary)->aux.capa / 2;
if (capa_inc < ARY_DEFAULT_SIZE) {
capa_inc = ARY_DEFAULT_SIZE;
}
RARRAY(ary)->aux.capa = idx + capa_inc;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
if (idx > RARRAY(ary)->len) {
rb_mem_clear(RARRAY(ary)->ptr+RARRAY(ary)->len,
idx-RARRAY(ary)->len+1);
}
if (idx >= RARRAY(ary)->len) {
RARRAY(ary)->len = idx + 1;
}
RARRAY(ary)->ptr[idx] = val;
}
VALUE
rb_ary_push(ary, item)
VALUE ary;
VALUE item;
{
rb_ary_store(ary, RARRAY(ary)->len, item);
return ary;
}
static VALUE
rb_ary_push_m(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
if (argc == 0) {
rb_raise(rb_eArgError, "wrong number arguments(at least 1)");
}
if (argc > 0) {
while (argc--) {
rb_ary_push(ary, *argv++);
}
}
return ary;
}
VALUE
rb_ary_pop(ary)
VALUE ary;
{
rb_ary_modify_check(ary);
if (RARRAY(ary)->len == 0) return Qnil;
if (!FL_TEST(ary, ELTS_SHARED) &&
RARRAY(ary)->len * 10 < RARRAY(ary)->aux.capa &&
RARRAY(ary)->aux.capa > ARY_DEFAULT_SIZE) {
RARRAY(ary)->aux.capa = RARRAY(ary)->len * 2;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
return RARRAY(ary)->ptr[--RARRAY(ary)->len];
}
static void
ary_make_shared(ary)
VALUE ary;
{
if (FL_TEST(ary, ELTS_SHARED)) return;
else {
NEWOBJ(shared, struct RArray);
OBJSETUP(shared, rb_cArray, T_ARRAY);
shared->len = RARRAY(ary)->len;
shared->ptr = RARRAY(ary)->ptr;
shared->aux.capa = RARRAY(ary)->aux.capa;
RARRAY(ary)->aux.shared = (VALUE)shared;
FL_SET(ary, ELTS_SHARED);
}
}
VALUE
rb_ary_shift(ary)
VALUE ary;
{
VALUE top;
rb_ary_modify_check(ary);
if (RARRAY(ary)->len == 0) return Qnil;
top = RARRAY(ary)->ptr[0];
ary_make_shared(ary);
RARRAY(ary)->ptr++; /* shift ptr */
RARRAY(ary)->len--;
return top;
}
VALUE
rb_ary_unshift(ary, item)
VALUE ary, item;
{
rb_ary_modify(ary);
if (RARRAY(ary)->len == RARRAY(ary)->aux.capa) {
long capa_inc = RARRAY(ary)->aux.capa / 2;
if (capa_inc < ARY_DEFAULT_SIZE) {
capa_inc = ARY_DEFAULT_SIZE;
}
RARRAY(ary)->aux.capa+=capa_inc;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
/* sliding items */
MEMMOVE(RARRAY(ary)->ptr+1, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
RARRAY(ary)->len++;
RARRAY(ary)->ptr[0] = item;
return ary;
}
static VALUE
rb_ary_unshift_m(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
if (argc == 0) {
rb_raise(rb_eArgError, "wrong number of arguments(at least 1)");
}
if (argc > 0) {
long len = RARRAY(ary)->len;
/* make rooms by setting the last item */
rb_ary_store(ary, len + argc - 1, Qnil);
/* sliding items */
MEMMOVE(RARRAY(ary)->ptr + argc, RARRAY(ary)->ptr, VALUE, len);
MEMCPY(RARRAY(ary)->ptr, argv, VALUE, argc);
}
return ary;
}
VALUE
rb_ary_entry(ary, offset)
VALUE ary;
long offset;
{
if (RARRAY(ary)->len == 0) return Qnil;
if (offset < 0) {
offset += RARRAY(ary)->len;
}
if (offset < 0 || RARRAY(ary)->len <= offset) {
return Qnil;
}
return RARRAY(ary)->ptr[offset];
}
static VALUE
rb_ary_subseq(ary, beg, len)
VALUE ary;
long beg, len;
{
VALUE klass, ary2;
if (beg > RARRAY(ary)->len) return Qnil;
if (beg < 0 || len < 0) return Qnil;
if (beg + len > RARRAY(ary)->len) {
len = RARRAY(ary)->len - beg;
}
if (len < 0) {
len = 0;
}
klass = rb_obj_class(ary);
if (len == 0) return ary_new(klass,0);
ary_make_shared(ary);
ary2 = rb_obj_alloc(klass);
RARRAY(ary2)->ptr = RARRAY(ary)->ptr+beg;
RARRAY(ary2)->len = len;
RARRAY(ary2)->aux.shared = RARRAY(ary)->aux.shared;
FL_SET(ary2, ELTS_SHARED);
return ary2;
}
VALUE
rb_ary_aref(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
VALUE arg;
long beg, len;
if (argc == 2) {
beg = NUM2LONG(argv[0]);
len = NUM2LONG(argv[1]);
if (beg < 0) {
beg += RARRAY(ary)->len;
}
return rb_ary_subseq(ary, beg, len);
}
if (argc != 1) {
rb_scan_args(argc, argv, "11", 0, 0);
}
arg = argv[0];
/* special case - speeding up */
if (FIXNUM_P(arg)) {
return rb_ary_entry(ary, FIX2LONG(arg));
}
else if (TYPE(arg) == T_BIGNUM) {
rb_raise(rb_eIndexError, "index too big");
}
else {
/* check if idx is Range */
switch (rb_range_beg_len(arg, &beg, &len, RARRAY(ary)->len, 0)) {
case Qfalse:
break;
case Qnil:
return Qnil;
default:
return rb_ary_subseq(ary, beg, len);
}
}
return rb_ary_entry(ary, NUM2LONG(arg));
}
static VALUE
rb_ary_at(ary, pos)
VALUE ary, pos;
{
return rb_ary_entry(ary, NUM2LONG(pos));
}
static VALUE
rb_ary_first(ary)
VALUE ary;
{
if (RARRAY(ary)->len == 0) return Qnil;
return RARRAY(ary)->ptr[0];
}
static VALUE
rb_ary_last(ary)
VALUE ary;
{
if (RARRAY(ary)->len == 0) return Qnil;
return RARRAY(ary)->ptr[RARRAY(ary)->len-1];
}
static VALUE
rb_ary_fetch(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
VALUE pos, ifnone;
long idx;
rb_scan_args(argc, argv, "11", &pos, &ifnone);
idx = NUM2LONG(pos);
if (idx < 0) {
idx += RARRAY(ary)->len;
}
if (idx < 0 || RARRAY(ary)->len <= idx) {
if (rb_block_given_p()) {
if (argc > 1) {
rb_raise(rb_eArgError, "wrong number of arguments");
}
return rb_yield(pos);
}
if (argc == 1) {
rb_raise(rb_eIndexError, "index %d out of array", idx);
}
return ifnone;
}
return RARRAY(ary)->ptr[idx];
}
static VALUE
rb_ary_index(ary, val)
VALUE ary;
VALUE val;
{
long i;
for (i=0; i<RARRAY(ary)->len; i++) {
if (rb_equal(RARRAY(ary)->ptr[i], val))
return INT2NUM(i);
}
return Qnil;
}
static VALUE
rb_ary_rindex(ary, val)
VALUE ary;
VALUE val;
{
long i = RARRAY(ary)->len;
while (i--) {
if (rb_equal(RARRAY(ary)->ptr[i], val))
return INT2NUM(i);
}
return Qnil;
}
static VALUE
rb_ary_indexes(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
VALUE new_ary;
long i;
rb_warn("Array#%s is deprecated; use Array#select",
rb_id2name(rb_frame_last_func()));
new_ary = rb_ary_new2(argc);
for (i=0; i<argc; i++) {
rb_ary_push(new_ary, rb_ary_aref(1, argv+i, ary));
}
return new_ary;
}
VALUE
rb_ary_to_ary(obj)
VALUE obj;
{
if (NIL_P(obj)) return rb_ary_new2(0);
if (TYPE(obj) == T_ARRAY) {
return obj;
}
if (rb_respond_to(obj, rb_intern("to_ary"))) {
return rb_convert_type(obj, T_ARRAY, "Array", "to_ary");
}
return rb_ary_new3(1, obj);
}
static void
rb_ary_update(ary, beg, len, rpl)
VALUE ary;
long beg, len;
VALUE rpl;
{
long rlen;
rpl = rb_ary_to_ary(rpl);
rlen = RARRAY(rpl)->len;
if (len < 0) rb_raise(rb_eIndexError, "negative length %d", len);
if (beg < 0) {
beg += RARRAY(ary)->len;
}
if (beg < 0) {
beg -= RARRAY(ary)->len;
rb_raise(rb_eIndexError, "index %d out of array", beg);
}
if (beg + len > RARRAY(ary)->len) {
len = RARRAY(ary)->len - beg;
}
rb_ary_modify(ary);
if (beg >= RARRAY(ary)->len) {
len = beg + rlen;
if (len >= RARRAY(ary)->aux.capa) {
RARRAY(ary)->aux.capa=len;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
rb_mem_clear(RARRAY(ary)->ptr+RARRAY(ary)->len, beg-RARRAY(ary)->len);
MEMCPY(RARRAY(ary)->ptr+beg, RARRAY(rpl)->ptr, VALUE, rlen);
RARRAY(ary)->len = len;
}
else {
long alen;
if (beg + len > RARRAY(ary)->len) {
len = RARRAY(ary)->len - beg;
}
alen = RARRAY(ary)->len + rlen - len;
if (alen >= RARRAY(ary)->aux.capa) {
RARRAY(ary)->aux.capa = alen;
REALLOC_N(RARRAY(ary)->ptr, VALUE, RARRAY(ary)->aux.capa);
}
if (len != rlen) {
MEMMOVE(RARRAY(ary)->ptr+beg+rlen, RARRAY(ary)->ptr+beg+len,
VALUE, RARRAY(ary)->len-(beg+len));
RARRAY(ary)->len = alen;
}
MEMMOVE(RARRAY(ary)->ptr+beg, RARRAY(rpl)->ptr, VALUE, rlen);
}
}
static VALUE
rb_ary_aset(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
long offset, beg, len;
if (argc == 3) {
rb_ary_update(ary, NUM2LONG(argv[0]), NUM2LONG(argv[1]), argv[2]);
return argv[2];
}
if (argc != 2) {
rb_raise(rb_eArgError, "wrong number of arguments(%d for 2)", argc);
}
if (FIXNUM_P(argv[0])) {
offset = FIX2LONG(argv[0]);
goto fixnum;
}
else if (rb_range_beg_len(argv[0], &beg, &len, RARRAY(ary)->len, 1)) {
/* check if idx is Range */
rb_ary_update(ary, beg, len, argv[1]);
return argv[1];
}
if (TYPE(argv[0]) == T_BIGNUM) {
rb_raise(rb_eIndexError, "index too big");
}
offset = NUM2LONG(argv[0]);
fixnum:
rb_ary_store(ary, offset, argv[1]);
return argv[1];
}
static VALUE
rb_ary_insert(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
long pos;
if (argc < 2) {
rb_raise(rb_eArgError, "wrong number of arguments(at least 2)");
}
pos = NUM2LONG(argv[0]);
if (pos == -1) {
pos = RSTRING(ary)->len;
}
else if (pos < 0) {
pos++;
}
rb_ary_update(ary, pos, 0, rb_ary_new4(argc-1, argv+1));
return ary;
}
VALUE
rb_ary_each(ary)
VALUE ary;
{
long i;
for (i=0; i<RARRAY(ary)->len; i++) {
rb_yield(RARRAY(ary)->ptr[i]);
}
return ary;
}
static VALUE
rb_ary_each_index(ary)
VALUE ary;
{
long i;
for (i=0; i<RARRAY(ary)->len; i++) {
rb_yield(INT2NUM(i));
}
return ary;
}
static VALUE
rb_ary_reverse_each(ary)
VALUE ary;
{
long len = RARRAY(ary)->len;
while (len--) {
rb_yield(RARRAY(ary)->ptr[len]);
}
return ary;
}
static VALUE
rb_ary_length(ary)
VALUE ary;
{
return INT2NUM(RARRAY(ary)->len);
}
static VALUE
rb_ary_empty_p(ary)
VALUE ary;
{
if (RARRAY(ary)->len == 0)
return Qtrue;
return Qfalse;
}
static VALUE
ary_copy(ary, clone)
VALUE ary;
int clone;
{
VALUE copy;
ary_make_shared(ary);
copy = rb_obj_alloc(rb_cArray);
if (clone) CLONESETUP(copy, ary);
else DUPSETUP(copy, ary);
RARRAY(copy)->ptr = RARRAY(ary)->ptr;
RARRAY(copy)->len = RARRAY(ary)->len;
RARRAY(copy)->aux.shared = RARRAY(ary)->aux.shared;
FL_SET(copy, ELTS_SHARED);
return copy;
}
static VALUE
rb_ary_clone(ary)
VALUE ary;
{
return ary_copy(ary, Qtrue);
}
VALUE
rb_ary_dup(ary)
VALUE ary;
{
return ary_copy(ary, Qfalse);
}
static VALUE
ary_dup(ary)
VALUE ary;
{
VALUE dup = rb_ary_new2(RARRAY(ary)->len);
DUPSETUP(dup, ary);
MEMCPY(RARRAY(dup)->ptr, RARRAY(ary)->ptr, VALUE, RARRAY(ary)->len);
RARRAY(dup)->len = RARRAY(ary)->len;
return dup;
}
extern VALUE rb_output_fs;
static VALUE
inspect_join(ary, arg)
VALUE ary;
VALUE *arg;
{
return rb_ary_join(arg[0], arg[1]);
}
VALUE
rb_ary_join(ary, sep)
VALUE ary, sep;
{
long len, i;
int taint = 0;
VALUE result, tmp;
if (RARRAY(ary)->len == 0) return rb_str_new(0, 0);
if (OBJ_TAINTED(ary)) taint = 1;
if (OBJ_TAINTED(sep)) taint = 1;
len = 1;
for (i=0; i<RARRAY(ary)->len; i++) {
if (TYPE(RARRAY(ary)->ptr[i]) == T_STRING) {
len += RSTRING(RARRAY(ary)->ptr[i])->len;
}
else {
len += 10;
}
}
if (!NIL_P(sep)) {
StringValue(sep);
len += RSTRING(sep)->len * (RARRAY(ary)->len - 1);
}
result = rb_str_buf_new(len);
for (i=0; i<RARRAY(ary)->len; i++) {
tmp = RARRAY(ary)->ptr[i];
switch (TYPE(tmp)) {
case T_STRING:
break;
case T_ARRAY:
if (rb_inspecting_p(tmp)) {
tmp = rb_str_new2("[...]");
}
else {
VALUE args[2];
args[0] = tmp;
args[1] = sep;
tmp = rb_protect_inspect(inspect_join, ary, (VALUE)args);
}
break;
default:
tmp = rb_obj_as_string(tmp);
}
if (i > 0 && !NIL_P(sep))
rb_str_buf_append(result, sep);
rb_str_buf_append(result, tmp);
if (OBJ_TAINTED(tmp)) taint = 1;
}
if (taint) OBJ_TAINT(result);
return result;
}
static VALUE
rb_ary_join_m(argc, argv, ary)
int argc;
VALUE *argv;
VALUE ary;
{
VALUE sep;
rb_scan_args(argc, argv, "01", &sep);
if (NIL_P(sep)) sep = rb_output_fs;
return rb_ary_join(ary, sep);
}
VALUE
rb_ary_to_s(ary)
VALUE ary;
{
VALUE str, sep;
if (RARRAY(ary)->len == 0) return rb_str_new(0, 0);
sep = rb_output_fs;
str = rb_ary_join(ary, sep);
return str;
}
static ID inspect_key;
struct inspect_arg {
VALUE (*func)();
VALUE arg1, arg2;
};
static VALUE
inspect_call(arg)
struct inspect_arg *arg;
{
return (*arg->func)(arg->arg1, arg->arg2);
}
static VALUE
inspect_ensure(obj)
VALUE obj;
{
VALUE inspect_tbl;
inspect_tbl = rb_thread_local_aref(rb_thread_current(), inspect_key);
rb_ary_pop(inspect_tbl);
return 0;
}
VALUE
rb_protect_inspect(func, obj, arg)
VALUE (*func)(ANYARGS);
VALUE obj, arg;
{
struct inspect_arg iarg;
VALUE inspect_tbl;
VALUE id;
if (!inspect_key) {
inspect_key = rb_intern("__inspect_key__");
}
inspect_tbl = rb_thread_local_aref(rb_thread_current(), inspect_key);
if (NIL_P(inspect_tbl)) {
inspect_tbl = rb_ary_new();
rb_thread_local_aset(rb_thread_current(), inspect_key, inspect_tbl);
}
id = rb_obj_id(obj);
if (rb_ary_includes(inspect_tbl, id)) {
return (*func)(obj, arg);
}
rb_ary_push(inspect_tbl, id);
iarg.func = func;
iarg.arg1 = obj;
iarg.arg2 = arg;
return rb_ensure(inspect_call, (VALUE)&iarg, inspect_ensure, obj);
}