/marshal.c
C | 2405 lines | 2386 code | 9 blank | 10 comment | 6 complexity | 5cca6bde3138d96c04a578e2284b3cf1 MD5 | raw file
Possible License(s): LGPL-2.1, AGPL-3.0, 0BSD, Unlicense, GPL-2.0, BSD-3-Clause
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- /**********************************************************************
- marshal.c -
- $Author$
- created at: Thu Apr 27 16:30:01 JST 1995
- Copyright (C) 1993-2007 Yukihiro Matsumoto
- **********************************************************************/
- #include "ruby/internal/config.h"
- #include <math.h>
- #ifdef HAVE_FLOAT_H
- #include <float.h>
- #endif
- #ifdef HAVE_IEEEFP_H
- #include <ieeefp.h>
- #endif
- #include "encindex.h"
- #include "id_table.h"
- #include "internal.h"
- #include "internal/array.h"
- #include "internal/bignum.h"
- #include "internal/class.h"
- #include "internal/encoding.h"
- #include "internal/error.h"
- #include "internal/hash.h"
- #include "internal/object.h"
- #include "internal/struct.h"
- #include "internal/util.h"
- #include "internal/vm.h"
- #include "ruby/io.h"
- #include "ruby/ruby.h"
- #include "ruby/st.h"
- #include "ruby/util.h"
- #define BITSPERSHORT (2*CHAR_BIT)
- #define SHORTMASK ((1<<BITSPERSHORT)-1)
- #define SHORTDN(x) RSHIFT((x),BITSPERSHORT)
- #if SIZEOF_SHORT == SIZEOF_BDIGIT
- #define SHORTLEN(x) (x)
- #else
- static size_t
- shortlen(size_t len, BDIGIT *ds)
- {
- BDIGIT num;
- int offset = 0;
- num = ds[len-1];
- while (num) {
- num = SHORTDN(num);
- offset++;
- }
- return (len - 1)*SIZEOF_BDIGIT/2 + offset;
- }
- #define SHORTLEN(x) shortlen((x),d)
- #endif
- #define MARSHAL_MAJOR 4
- #define MARSHAL_MINOR 8
- #define TYPE_NIL '0'
- #define TYPE_TRUE 'T'
- #define TYPE_FALSE 'F'
- #define TYPE_FIXNUM 'i'
- #define TYPE_EXTENDED 'e'
- #define TYPE_UCLASS 'C'
- #define TYPE_OBJECT 'o'
- #define TYPE_DATA 'd'
- #define TYPE_USERDEF 'u'
- #define TYPE_USRMARSHAL 'U'
- #define TYPE_FLOAT 'f'
- #define TYPE_BIGNUM 'l'
- #define TYPE_STRING '"'
- #define TYPE_REGEXP '/'
- #define TYPE_ARRAY '['
- #define TYPE_HASH '{'
- #define TYPE_HASH_DEF '}'
- #define TYPE_STRUCT 'S'
- #define TYPE_MODULE_OLD 'M'
- #define TYPE_CLASS 'c'
- #define TYPE_MODULE 'm'
- #define TYPE_SYMBOL ':'
- #define TYPE_SYMLINK ';'
- #define TYPE_IVAR 'I'
- #define TYPE_LINK '@'
- static ID s_dump, s_load, s_mdump, s_mload;
- static ID s_dump_data, s_load_data, s_alloc, s_call;
- static ID s_getbyte, s_read, s_write, s_binmode;
- static ID s_encoding_short, s_ruby2_keywords_flag;
- #define name_s_dump "_dump"
- #define name_s_load "_load"
- #define name_s_mdump "marshal_dump"
- #define name_s_mload "marshal_load"
- #define name_s_dump_data "_dump_data"
- #define name_s_load_data "_load_data"
- #define name_s_alloc "_alloc"
- #define name_s_call "call"
- #define name_s_getbyte "getbyte"
- #define name_s_read "read"
- #define name_s_write "write"
- #define name_s_binmode "binmode"
- #define name_s_encoding_short "E"
- #define name_s_ruby2_keywords_flag "K"
- typedef struct {
- VALUE newclass;
- VALUE oldclass;
- VALUE (*dumper)(VALUE);
- VALUE (*loader)(VALUE, VALUE);
- } marshal_compat_t;
- static st_table *compat_allocator_tbl;
- static VALUE compat_allocator_tbl_wrapper;
- static VALUE rb_marshal_dump_limited(VALUE obj, VALUE port, int limit);
- static VALUE rb_marshal_load_with_proc(VALUE port, VALUE proc);
- static int
- mark_marshal_compat_i(st_data_t key, st_data_t value, st_data_t _)
- {
- marshal_compat_t *p = (marshal_compat_t *)value;
- rb_gc_mark(p->newclass);
- rb_gc_mark(p->oldclass);
- return ST_CONTINUE;
- }
- static void
- mark_marshal_compat_t(void *tbl)
- {
- if (!tbl) return;
- st_foreach(tbl, mark_marshal_compat_i, 0);
- }
- static st_table *compat_allocator_table(void);
- void
- rb_marshal_define_compat(VALUE newclass, VALUE oldclass, VALUE (*dumper)(VALUE), VALUE (*loader)(VALUE, VALUE))
- {
- marshal_compat_t *compat;
- rb_alloc_func_t allocator = rb_get_alloc_func(newclass);
- if (!allocator) {
- rb_raise(rb_eTypeError, "no allocator");
- }
- compat = ALLOC(marshal_compat_t);
- compat->newclass = Qnil;
- compat->oldclass = Qnil;
- compat->newclass = newclass;
- compat->oldclass = oldclass;
- compat->dumper = dumper;
- compat->loader = loader;
- st_insert(compat_allocator_table(), (st_data_t)allocator, (st_data_t)compat);
- }
- struct dump_arg {
- VALUE str, dest;
- st_table *symbols;
- st_table *data;
- st_table *compat_tbl;
- st_table *encodings;
- };
- struct dump_call_arg {
- VALUE obj;
- struct dump_arg *arg;
- int limit;
- };
- static VALUE
- check_dump_arg(VALUE ret, struct dump_arg *arg, const char *name)
- {
- if (!arg->symbols) {
- rb_raise(rb_eRuntimeError, "Marshal.dump reentered at %s",
- name);
- }
- return ret;
- }
- static VALUE
- check_userdump_arg(VALUE obj, ID sym, int argc, const VALUE *argv,
- struct dump_arg *arg, const char *name)
- {
- VALUE ret = rb_funcallv(obj, sym, argc, argv);
- VALUE klass = CLASS_OF(obj);
- if (CLASS_OF(ret) == klass) {
- rb_raise(rb_eRuntimeError, "%"PRIsVALUE"#%s returned same class instance",
- klass, name);
- }
- return check_dump_arg(ret, arg, name);
- }
- #define dump_funcall(arg, obj, sym, argc, argv) \
- check_userdump_arg(obj, sym, argc, argv, arg, name_##sym)
- #define dump_check_funcall(arg, obj, sym, argc, argv) \
- check_dump_arg(rb_check_funcall(obj, sym, argc, argv), arg, name_##sym)
- static void clear_dump_arg(struct dump_arg *arg);
- static void
- mark_dump_arg(void *ptr)
- {
- struct dump_arg *p = ptr;
- if (!p->symbols)
- return;
- rb_mark_set(p->symbols);
- rb_mark_set(p->data);
- rb_mark_hash(p->compat_tbl);
- rb_gc_mark(p->str);
- }
- static void
- free_dump_arg(void *ptr)
- {
- clear_dump_arg(ptr);
- xfree(ptr);
- }
- static size_t
- memsize_dump_arg(const void *ptr)
- {
- return sizeof(struct dump_arg);
- }
- static const rb_data_type_t dump_arg_data = {
- "dump_arg",
- {mark_dump_arg, free_dump_arg, memsize_dump_arg,},
- 0, 0, RUBY_TYPED_FREE_IMMEDIATELY
- };
- static VALUE
- must_not_be_anonymous(const char *type, VALUE path)
- {
- char *n = RSTRING_PTR(path);
- if (!rb_enc_asciicompat(rb_enc_get(path))) {
- /* cannot occur? */
- rb_raise(rb_eTypeError, "can't dump non-ascii %s name % "PRIsVALUE,
- type, path);
- }
- if (n[0] == '#') {
- rb_raise(rb_eTypeError, "can't dump anonymous %s % "PRIsVALUE,
- type, path);
- }
- return path;
- }
- static VALUE
- class2path(VALUE klass)
- {
- VALUE path = rb_class_path(klass);
- must_not_be_anonymous((RB_TYPE_P(klass, T_CLASS) ? "class" : "module"), path);
- if (rb_path_to_class(path) != rb_class_real(klass)) {
- rb_raise(rb_eTypeError, "% "PRIsVALUE" can't be referred to", path);
- }
- return path;
- }
- int ruby_marshal_write_long(long x, char *buf);
- static void w_long(long, struct dump_arg*);
- static int w_encoding(VALUE encname, struct dump_call_arg *arg);
- static VALUE encoding_name(VALUE obj, struct dump_arg *arg);
- static void
- w_nbyte(const char *s, long n, struct dump_arg *arg)
- {
- VALUE buf = arg->str;
- rb_str_buf_cat(buf, s, n);
- if (arg->dest && RSTRING_LEN(buf) >= BUFSIZ) {
- rb_io_write(arg->dest, buf);
- rb_str_resize(buf, 0);
- }
- }
- static void
- w_byte(char c, struct dump_arg *arg)
- {
- w_nbyte(&c, 1, arg);
- }
- static void
- w_bytes(const char *s, long n, struct dump_arg *arg)
- {
- w_long(n, arg);
- w_nbyte(s, n, arg);
- }
- #define w_cstr(s, arg) w_bytes((s), strlen(s), (arg))
- static void
- w_short(int x, struct dump_arg *arg)
- {
- w_byte((char)((x >> 0) & 0xff), arg);
- w_byte((char)((x >> 8) & 0xff), arg);
- }
- static void
- w_long(long x, struct dump_arg *arg)
- {
- char buf[sizeof(long)+1];
- int i = ruby_marshal_write_long(x, buf);
- if (i < 0) {
- rb_raise(rb_eTypeError, "long too big to dump");
- }
- w_nbyte(buf, i, arg);
- }
- int
- ruby_marshal_write_long(long x, char *buf)
- {
- int i;
- #if SIZEOF_LONG > 4
- if (!(RSHIFT(x, 31) == 0 || RSHIFT(x, 31) == -1)) {
- /* big long does not fit in 4 bytes */
- return -1;
- }
- #endif
- if (x == 0) {
- buf[0] = 0;
- return 1;
- }
- if (0 < x && x < 123) {
- buf[0] = (char)(x + 5);
- return 1;
- }
- if (-124 < x && x < 0) {
- buf[0] = (char)((x - 5)&0xff);
- return 1;
- }
- for (i=1;i<(int)sizeof(long)+1;i++) {
- buf[i] = (char)(x & 0xff);
- x = RSHIFT(x,8);
- if (x == 0) {
- buf[0] = i;
- break;
- }
- if (x == -1) {
- buf[0] = -i;
- break;
- }
- }
- return i+1;
- }
- #ifdef DBL_MANT_DIG
- #define DECIMAL_MANT (53-16) /* from IEEE754 double precision */
- #if DBL_MANT_DIG > 32
- #define MANT_BITS 32
- #elif DBL_MANT_DIG > 24
- #define MANT_BITS 24
- #elif DBL_MANT_DIG > 16
- #define MANT_BITS 16
- #else
- #define MANT_BITS 8
- #endif
- static double
- load_mantissa(double d, const char *buf, long len)
- {
- if (!len) return d;
- if (--len > 0 && !*buf++) { /* binary mantissa mark */
- int e, s = d < 0, dig = 0;
- unsigned long m;
- modf(ldexp(frexp(fabs(d), &e), DECIMAL_MANT), &d);
- do {
- m = 0;
- switch (len) {
- default: m = *buf++ & 0xff; /* fall through */
- #if MANT_BITS > 24
- case 3: m = (m << 8) | (*buf++ & 0xff); /* fall through */
- #endif
- #if MANT_BITS > 16
- case 2: m = (m << 8) | (*buf++ & 0xff); /* fall through */
- #endif
- #if MANT_BITS > 8
- case 1: m = (m << 8) | (*buf++ & 0xff);
- #endif
- }
- dig -= len < MANT_BITS / 8 ? 8 * (unsigned)len : MANT_BITS;
- d += ldexp((double)m, dig);
- } while ((len -= MANT_BITS / 8) > 0);
- d = ldexp(d, e - DECIMAL_MANT);
- if (s) d = -d;
- }
- return d;
- }
- #else
- #define load_mantissa(d, buf, len) (d)
- #endif
- #ifdef DBL_DIG
- #define FLOAT_DIG (DBL_DIG+2)
- #else
- #define FLOAT_DIG 17
- #endif
- static void
- w_float(double d, struct dump_arg *arg)
- {
- char buf[FLOAT_DIG + (DECIMAL_MANT + 7) / 8 + 10];
- if (isinf(d)) {
- if (d < 0) w_cstr("-inf", arg);
- else w_cstr("inf", arg);
- }
- else if (isnan(d)) {
- w_cstr("nan", arg);
- }
- else if (d == 0.0) {
- if (signbit(d)) w_cstr("-0", arg);
- else w_cstr("0", arg);
- }
- else {
- int decpt, sign, digs, len = 0;
- char *e, *p = ruby_dtoa(d, 0, 0, &decpt, &sign, &e);
- if (sign) buf[len++] = '-';
- digs = (int)(e - p);
- if (decpt < -3 || decpt > digs) {
- buf[len++] = p[0];
- if (--digs > 0) buf[len++] = '.';
- memcpy(buf + len, p + 1, digs);
- len += digs;
- len += snprintf(buf + len, sizeof(buf) - len, "e%d", decpt - 1);
- }
- else if (decpt > 0) {
- memcpy(buf + len, p, decpt);
- len += decpt;
- if ((digs -= decpt) > 0) {
- buf[len++] = '.';
- memcpy(buf + len, p + decpt, digs);
- len += digs;
- }
- }
- else {
- buf[len++] = '0';
- buf[len++] = '.';
- if (decpt) {
- memset(buf + len, '0', -decpt);
- len -= decpt;
- }
- memcpy(buf + len, p, digs);
- len += digs;
- }
- xfree(p);
- w_bytes(buf, len, arg);
- }
- }
- static void
- w_symbol(VALUE sym, struct dump_arg *arg)
- {
- st_data_t num;
- VALUE encname;
- if (st_lookup(arg->symbols, sym, &num)) {
- w_byte(TYPE_SYMLINK, arg);
- w_long((long)num, arg);
- }
- else {
- const VALUE orig_sym = sym;
- sym = rb_sym2str(sym);
- if (!sym) {
- rb_raise(rb_eTypeError, "can't dump anonymous ID %"PRIdVALUE, sym);
- }
- encname = encoding_name(sym, arg);
- if (NIL_P(encname) ||
- rb_enc_str_coderange(sym) == ENC_CODERANGE_7BIT) {
- encname = Qnil;
- }
- else {
- w_byte(TYPE_IVAR, arg);
- }
- w_byte(TYPE_SYMBOL, arg);
- w_bytes(RSTRING_PTR(sym), RSTRING_LEN(sym), arg);
- st_add_direct(arg->symbols, orig_sym, arg->symbols->num_entries);
- if (!NIL_P(encname)) {
- struct dump_call_arg c_arg;
- c_arg.limit = 1;
- c_arg.arg = arg;
- w_long(1L, arg);
- w_encoding(encname, &c_arg);
- }
- }
- }
- static void
- w_unique(VALUE s, struct dump_arg *arg)
- {
- must_not_be_anonymous("class", s);
- w_symbol(rb_str_intern(s), arg);
- }
- static void w_object(VALUE,struct dump_arg*,int);
- static int
- hash_each(VALUE key, VALUE value, VALUE v)
- {
- struct dump_call_arg *arg = (void *)v;
- w_object(key, arg->arg, arg->limit);
- w_object(value, arg->arg, arg->limit);
- return ST_CONTINUE;
- }
- #define SINGLETON_DUMP_UNABLE_P(klass) \
- (rb_id_table_size(RCLASS_M_TBL(klass)) > 0 || \
- (RCLASS_IV_TBL(klass) && RCLASS_IV_TBL(klass)->num_entries > 1))
- static void
- w_extended(VALUE klass, struct dump_arg *arg, int check)
- {
- if (check && FL_TEST(klass, FL_SINGLETON)) {
- VALUE origin = RCLASS_ORIGIN(klass);
- if (SINGLETON_DUMP_UNABLE_P(klass) ||
- (origin != klass && SINGLETON_DUMP_UNABLE_P(origin))) {
- rb_raise(rb_eTypeError, "singleton can't be dumped");
- }
- klass = RCLASS_SUPER(klass);
- }
- while (BUILTIN_TYPE(klass) == T_ICLASS) {
- if (!FL_TEST(klass, RICLASS_IS_ORIGIN) ||
- BUILTIN_TYPE(RBASIC(klass)->klass) != T_MODULE) {
- VALUE path = rb_class_name(RBASIC(klass)->klass);
- w_byte(TYPE_EXTENDED, arg);
- w_unique(path, arg);
- }
- klass = RCLASS_SUPER(klass);
- }
- }
- static void
- w_class(char type, VALUE obj, struct dump_arg *arg, int check)
- {
- VALUE path;
- st_data_t real_obj;
- VALUE klass;
- if (arg->compat_tbl &&
- st_lookup(arg->compat_tbl, (st_data_t)obj, &real_obj)) {
- obj = (VALUE)real_obj;
- }
- klass = CLASS_OF(obj);
- w_extended(klass, arg, check);
- w_byte(type, arg);
- path = class2path(rb_class_real(klass));
- w_unique(path, arg);
- }
- static void
- w_uclass(VALUE obj, VALUE super, struct dump_arg *arg)
- {
- VALUE klass = CLASS_OF(obj);
- w_extended(klass, arg, TRUE);
- klass = rb_class_real(klass);
- if (klass != super) {
- w_byte(TYPE_UCLASS, arg);
- w_unique(class2path(klass), arg);
- }
- }
- static bool
- rb_hash_ruby2_keywords_p(VALUE obj)
- {
- return (RHASH(obj)->basic.flags & RHASH_PASS_AS_KEYWORDS) != 0;
- }
- static void
- rb_hash_ruby2_keywords(VALUE obj)
- {
- RHASH(obj)->basic.flags |= RHASH_PASS_AS_KEYWORDS;
- }
- static inline bool
- to_be_skipped_id(const ID id)
- {
- if (id == s_encoding_short) return true;
- if (id == s_ruby2_keywords_flag) return true;
- if (id == rb_id_encoding()) return true;
- return !rb_id2str(id);
- }
- struct w_ivar_arg {
- struct dump_call_arg *dump;
- st_data_t num_ivar;
- };
- static int
- w_obj_each(st_data_t key, st_data_t val, st_data_t a)
- {
- ID id = (ID)key;
- VALUE value = (VALUE)val;
- struct w_ivar_arg *ivarg = (struct w_ivar_arg *)a;
- struct dump_call_arg *arg = ivarg->dump;
- if (to_be_skipped_id(id)) {
- if (id == s_encoding_short) {
- rb_warn("instance variable `"name_s_encoding_short"' on class %"PRIsVALUE" is not dumped",
- CLASS_OF(arg->obj));
- }
- if (id == s_ruby2_keywords_flag) {
- rb_warn("instance variable `"name_s_ruby2_keywords_flag"' on class %"PRIsVALUE" is not dumped",
- CLASS_OF(arg->obj));
- }
- return ST_CONTINUE;
- }
- if (!ivarg->num_ivar) {
- rb_raise(rb_eRuntimeError, "instance variable added to %"PRIsVALUE" instance",
- CLASS_OF(arg->obj));
- }
- --ivarg->num_ivar;
- w_symbol(ID2SYM(id), arg->arg);
- w_object(value, arg->arg, arg->limit);
- return ST_CONTINUE;
- }
- static int
- obj_count_ivars(st_data_t key, st_data_t val, st_data_t a)
- {
- ID id = (ID)key;
- if (!to_be_skipped_id(id) && UNLIKELY(!++*(st_index_t *)a)) {
- rb_raise(rb_eRuntimeError, "too many instance variables");
- }
- return ST_CONTINUE;
- }
- static VALUE
- encoding_name(VALUE obj, struct dump_arg *arg)
- {
- if (rb_enc_capable(obj)) {
- int encidx = rb_enc_get_index(obj);
- rb_encoding *enc = 0;
- st_data_t name;
- if (encidx <= 0 || !(enc = rb_enc_from_index(encidx))) {
- return Qnil;
- }
- /* special treatment for US-ASCII and UTF-8 */
- if (encidx == rb_usascii_encindex()) {
- return Qfalse;
- }
- else if (encidx == rb_utf8_encindex()) {
- return Qtrue;
- }
- if (arg->encodings ?
- !st_lookup(arg->encodings, (st_data_t)rb_enc_name(enc), &name) :
- (arg->encodings = st_init_strcasetable(), 1)) {
- name = (st_data_t)rb_str_new_cstr(rb_enc_name(enc));
- st_insert(arg->encodings, (st_data_t)rb_enc_name(enc), name);
- }
- return (VALUE)name;
- }
- else {
- return Qnil;
- }
- }
- static int
- w_encoding(VALUE encname, struct dump_call_arg *arg)
- {
- int limit = arg->limit;
- if (limit >= 0) ++limit;
- switch (encname) {
- case Qfalse:
- case Qtrue:
- w_symbol(ID2SYM(s_encoding_short), arg->arg);
- w_object(encname, arg->arg, limit);
- return 1;
- case Qnil:
- return 0;
- }
- w_symbol(ID2SYM(rb_id_encoding()), arg->arg);
- w_object(encname, arg->arg, limit);
- return 1;
- }
- static st_index_t
- has_ivars(VALUE obj, VALUE encname, VALUE *ivobj)
- {
- st_index_t num = !NIL_P(encname);
- if (SPECIAL_CONST_P(obj)) goto generic;
- switch (BUILTIN_TYPE(obj)) {
- case T_OBJECT:
- case T_CLASS:
- case T_MODULE:
- break; /* counted elsewhere */
- case T_HASH:
- if (rb_hash_ruby2_keywords_p(obj)) ++num;
- /* fall through */
- default:
- generic:
- rb_ivar_foreach(obj, obj_count_ivars, (st_data_t)&num);
- if (num) *ivobj = obj;
- }
- return num;
- }
- static void
- w_ivar_each(VALUE obj, st_index_t num, struct dump_call_arg *arg)
- {
- struct w_ivar_arg ivarg = {arg, num};
- if (!num) return;
- rb_ivar_foreach(obj, w_obj_each, (st_data_t)&ivarg);
- if (ivarg.num_ivar) {
- rb_raise(rb_eRuntimeError, "instance variable removed from %"PRIsVALUE" instance",
- CLASS_OF(arg->obj));
- }
- }
- static void
- w_ivar(st_index_t num, VALUE ivobj, VALUE encname, struct dump_call_arg *arg)
- {
- w_long(num, arg->arg);
- num -= w_encoding(encname, arg);
- if (RB_TYPE_P(ivobj, T_HASH) && rb_hash_ruby2_keywords_p(ivobj)) {
- int limit = arg->limit;
- if (limit >= 0) ++limit;
- w_symbol(ID2SYM(s_ruby2_keywords_flag), arg->arg);
- w_object(Qtrue, arg->arg, limit);
- num--;
- }
- if (ivobj != Qundef && num) {
- w_ivar_each(ivobj, num, arg);
- }
- }
- static void
- w_objivar(VALUE obj, struct dump_call_arg *arg)
- {
- st_data_t num = 0;
- rb_ivar_foreach(obj, obj_count_ivars, (st_data_t)&num);
- w_long(num, arg->arg);
- w_ivar_each(obj, num, arg);
- }
- static void
- w_object(VALUE obj, struct dump_arg *arg, int limit)
- {
- struct dump_call_arg c_arg;
- VALUE ivobj = Qundef;
- st_data_t num;
- st_index_t hasiv = 0;
- VALUE encname = Qnil;
- if (limit == 0) {
- rb_raise(rb_eArgError, "exceed depth limit");
- }
- if (limit > 0) limit--;
- c_arg.limit = limit;
- c_arg.arg = arg;
- c_arg.obj = obj;
- if (st_lookup(arg->data, obj, &num)) {
- w_byte(TYPE_LINK, arg);
- w_long((long)num, arg);
- return;
- }
- if (obj == Qnil) {
- w_byte(TYPE_NIL, arg);
- }
- else if (obj == Qtrue) {
- w_byte(TYPE_TRUE, arg);
- }
- else if (obj == Qfalse) {
- w_byte(TYPE_FALSE, arg);
- }
- else if (FIXNUM_P(obj)) {
- #if SIZEOF_LONG <= 4
- w_byte(TYPE_FIXNUM, arg);
- w_long(FIX2INT(obj), arg);
- #else
- if (RSHIFT((long)obj, 31) == 0 || RSHIFT((long)obj, 31) == -1) {
- w_byte(TYPE_FIXNUM, arg);
- w_long(FIX2LONG(obj), arg);
- }
- else {
- w_object(rb_int2big(FIX2LONG(obj)), arg, limit);
- }
- #endif
- }
- else if (SYMBOL_P(obj)) {
- w_symbol(obj, arg);
- }
- else if (FLONUM_P(obj)) {
- st_add_direct(arg->data, obj, arg->data->num_entries);
- w_byte(TYPE_FLOAT, arg);
- w_float(RFLOAT_VALUE(obj), arg);
- }
- else {
- VALUE v;
- if (!RBASIC_CLASS(obj)) {
- rb_raise(rb_eTypeError, "can't dump internal %s",
- rb_builtin_type_name(BUILTIN_TYPE(obj)));
- }
- if (rb_obj_respond_to(obj, s_mdump, TRUE)) {
- st_add_direct(arg->data, obj, arg->data->num_entries);
- v = dump_funcall(arg, obj, s_mdump, 0, 0);
- w_class(TYPE_USRMARSHAL, obj, arg, FALSE);
- w_object(v, arg, limit);
- return;
- }
- if (rb_obj_respond_to(obj, s_dump, TRUE)) {
- VALUE ivobj2 = Qundef;
- st_index_t hasiv2;
- VALUE encname2;
- v = INT2NUM(limit);
- v = dump_funcall(arg, obj, s_dump, 1, &v);
- if (!RB_TYPE_P(v, T_STRING)) {
- rb_raise(rb_eTypeError, "_dump() must return string");
- }
- hasiv = has_ivars(obj, (encname = encoding_name(obj, arg)), &ivobj);
- hasiv2 = has_ivars(v, (encname2 = encoding_name(v, arg)), &ivobj2);
- if (hasiv2) {
- hasiv = hasiv2;
- ivobj = ivobj2;
- encname = encname2;
- }
- if (hasiv) w_byte(TYPE_IVAR, arg);
- w_class(TYPE_USERDEF, obj, arg, FALSE);
- w_bytes(RSTRING_PTR(v), RSTRING_LEN(v), arg);
- if (hasiv) {
- w_ivar(hasiv, ivobj, encname, &c_arg);
- }
- st_add_direct(arg->data, obj, arg->data->num_entries);
- return;
- }
- st_add_direct(arg->data, obj, arg->data->num_entries);
- hasiv = has_ivars(obj, (encname = encoding_name(obj, arg)), &ivobj);
- {
- st_data_t compat_data;
- rb_alloc_func_t allocator = rb_get_alloc_func(RBASIC(obj)->klass);
- if (st_lookup(compat_allocator_tbl,
- (st_data_t)allocator,
- &compat_data)) {
- marshal_compat_t *compat = (marshal_compat_t*)compat_data;
- VALUE real_obj = obj;
- obj = compat->dumper(real_obj);
- if (!arg->compat_tbl) {
- arg->compat_tbl = rb_init_identtable();
- }
- st_insert(arg->compat_tbl, (st_data_t)obj, (st_data_t)real_obj);
- if (obj != real_obj && ivobj == Qundef) hasiv = 0;
- }
- }
- if (hasiv) w_byte(TYPE_IVAR, arg);
- switch (BUILTIN_TYPE(obj)) {
- case T_CLASS:
- if (FL_TEST(obj, FL_SINGLETON)) {
- rb_raise(rb_eTypeError, "singleton class can't be dumped");
- }
- w_byte(TYPE_CLASS, arg);
- {
- VALUE path = class2path(obj);
- w_bytes(RSTRING_PTR(path), RSTRING_LEN(path), arg);
- RB_GC_GUARD(path);
- }
- break;
- case T_MODULE:
- w_byte(TYPE_MODULE, arg);
- {
- VALUE path = class2path(obj);
- w_bytes(RSTRING_PTR(path), RSTRING_LEN(path), arg);
- RB_GC_GUARD(path);
- }
- break;
- case T_FLOAT:
- w_byte(TYPE_FLOAT, arg);
- w_float(RFLOAT_VALUE(obj), arg);
- break;
- case T_BIGNUM:
- w_byte(TYPE_BIGNUM, arg);
- {
- char sign = BIGNUM_SIGN(obj) ? '+' : '-';
- size_t len = BIGNUM_LEN(obj);
- size_t slen;
- size_t j;
- BDIGIT *d = BIGNUM_DIGITS(obj);
- slen = SHORTLEN(len);
- if (LONG_MAX < slen) {
- rb_raise(rb_eTypeError, "too big Bignum can't be dumped");
- }
- w_byte(sign, arg);
- w_long((long)slen, arg);
- for (j = 0; j < len; j++) {
- #if SIZEOF_BDIGIT > SIZEOF_SHORT
- BDIGIT num = *d;
- int i;
- for (i=0; i<SIZEOF_BDIGIT; i+=SIZEOF_SHORT) {
- w_short(num & SHORTMASK, arg);
- num = SHORTDN(num);
- if (j == len - 1 && num == 0) break;
- }
- #else
- w_short(*d, arg);
- #endif
- d++;
- }
- }
- break;
- case T_STRING:
- w_uclass(obj, rb_cString, arg);
- w_byte(TYPE_STRING, arg);
- w_bytes(RSTRING_PTR(obj), RSTRING_LEN(obj), arg);
- break;
- case T_REGEXP:
- w_uclass(obj, rb_cRegexp, arg);
- w_byte(TYPE_REGEXP, arg);
- {
- int opts = rb_reg_options(obj);
- w_bytes(RREGEXP_SRC_PTR(obj), RREGEXP_SRC_LEN(obj), arg);
- w_byte((char)opts, arg);
- }
- break;
- case T_ARRAY:
- w_uclass(obj, rb_cArray, arg);
- w_byte(TYPE_ARRAY, arg);
- {
- long i, len = RARRAY_LEN(obj);
- w_long(len, arg);
- for (i=0; i<RARRAY_LEN(obj); i++) {
- w_object(RARRAY_AREF(obj, i), arg, limit);
- if (len != RARRAY_LEN(obj)) {
- rb_raise(rb_eRuntimeError, "array modified during dump");
- }
- }
- }
- break;
- case T_HASH:
- w_uclass(obj, rb_cHash, arg);
- if (NIL_P(RHASH_IFNONE(obj))) {
- w_byte(TYPE_HASH, arg);
- }
- else if (FL_TEST(obj, RHASH_PROC_DEFAULT)) {
- rb_raise(rb_eTypeError, "can't dump hash with default proc");
- }
- else {
- w_byte(TYPE_HASH_DEF, arg);
- }
- w_long(rb_hash_size_num(obj), arg);
- rb_hash_foreach(obj, hash_each, (st_data_t)&c_arg);
- if (!NIL_P(RHASH_IFNONE(obj))) {
- w_object(RHASH_IFNONE(obj), arg, limit);
- }
- break;
- case T_STRUCT:
- w_class(TYPE_STRUCT, obj, arg, TRUE);
- {
- long len = RSTRUCT_LEN(obj);
- VALUE mem;
- long i;
- w_long(len, arg);
- mem = rb_struct_members(obj);
- for (i=0; i<len; i++) {
- w_symbol(RARRAY_AREF(mem, i), arg);
- w_object(RSTRUCT_GET(obj, i), arg, limit);
- }
- }
- break;
- case T_OBJECT:
- w_class(TYPE_OBJECT, obj, arg, TRUE);
- w_objivar(obj, &c_arg);
- break;
- case T_DATA:
- {
- VALUE v;
- if (!rb_obj_respond_to(obj, s_dump_data, TRUE)) {
- rb_raise(rb_eTypeError,
- "no _dump_data is defined for class %"PRIsVALUE,
- rb_obj_class(obj));
- }
- v = dump_funcall(arg, obj, s_dump_data, 0, 0);
- w_class(TYPE_DATA, obj, arg, TRUE);
- w_object(v, arg, limit);
- }
- break;
- default:
- rb_raise(rb_eTypeError, "can't dump %"PRIsVALUE,
- rb_obj_class(obj));
- break;
- }
- RB_GC_GUARD(obj);
- }
- if (hasiv) {
- w_ivar(hasiv, ivobj, encname, &c_arg);
- }
- }
- static void
- clear_dump_arg(struct dump_arg *arg)
- {
- if (!arg->symbols) return;
- st_free_table(arg->symbols);
- arg->symbols = 0;
- st_free_table(arg->data);
- arg->data = 0;
- if (arg->compat_tbl) {
- st_free_table(arg->compat_tbl);
- arg->compat_tbl = 0;
- }
- if (arg->encodings) {
- st_free_table(arg->encodings);
- arg->encodings = 0;
- }
- }
- NORETURN(static inline void io_needed(void));
- static inline void
- io_needed(void)
- {
- rb_raise(rb_eTypeError, "instance of IO needed");
- }
- /*
- * call-seq:
- * dump( obj [, anIO] , limit=-1 ) -> anIO
- *
- * Serializes obj and all descendant objects. If anIO is
- * specified, the serialized data will be written to it, otherwise the
- * data will be returned as a String. If limit is specified, the
- * traversal of subobjects will be limited to that depth. If limit is
- * negative, no checking of depth will be performed.
- *
- * class Klass
- * def initialize(str)
- * @str = str
- * end
- * def say_hello
- * @str
- * end
- * end
- *
- * (produces no output)
- *
- * o = Klass.new("hello\n")
- * data = Marshal.dump(o)
- * obj = Marshal.load(data)
- * obj.say_hello #=> "hello\n"
- *
- * Marshal can't dump following objects:
- * * anonymous Class/Module.
- * * objects which are related to system (ex: Dir, File::Stat, IO, File, Socket
- * and so on)
- * * an instance of MatchData, Data, Method, UnboundMethod, Proc, Thread,
- * ThreadGroup, Continuation
- * * objects which define singleton methods
- */
- static VALUE
- marshal_dump(int argc, VALUE *argv, VALUE _)
- {
- VALUE obj, port, a1, a2;
- int limit = -1;
- port = Qnil;
- rb_scan_args(argc, argv, "12", &obj, &a1, &a2);
- if (argc == 3) {
- if (!NIL_P(a2)) limit = NUM2INT(a2);
- if (NIL_P(a1)) io_needed();
- port = a1;
- }
- else if (argc == 2) {
- if (FIXNUM_P(a1)) limit = FIX2INT(a1);
- else if (NIL_P(a1)) io_needed();
- else port = a1;
- }
- return rb_marshal_dump_limited(obj, port, limit);
- }
- VALUE
- rb_marshal_dump_limited(VALUE obj, VALUE port, int limit)
- {
- struct dump_arg *arg;
- VALUE wrapper; /* used to avoid memory leak in case of exception */
- wrapper = TypedData_Make_Struct(0, struct dump_arg, &dump_arg_data, arg);
- arg->dest = 0;
- arg->symbols = st_init_numtable();
- arg->data = rb_init_identtable();
- arg->compat_tbl = 0;
- arg->encodings = 0;
- arg->str = rb_str_buf_new(0);
- if (!NIL_P(port)) {
- if (!rb_respond_to(port, s_write)) {
- io_needed();
- }
- arg->dest = port;
- dump_check_funcall(arg, port, s_binmode, 0, 0);
- }
- else {
- port = arg->str;
- }
- w_byte(MARSHAL_MAJOR, arg);
- w_byte(MARSHAL_MINOR, arg);
- w_object(obj, arg, limit);
- if (arg->dest) {
- rb_io_write(arg->dest, arg->str);
- rb_str_resize(arg->str, 0);
- }
- clear_dump_arg(arg);
- RB_GC_GUARD(wrapper);
- return port;
- }
- struct load_arg {
- VALUE src;
- char *buf;
- long buflen;
- long readable;
- long offset;
- st_table *symbols;
- st_table *data;
- VALUE proc;
- st_table *compat_tbl;
- };
- static VALUE
- check_load_arg(VALUE ret, struct load_arg *arg, const char *name)
- {
- if (!arg->symbols) {
- rb_raise(rb_eRuntimeError, "Marshal.load reentered at %s",
- name);
- }
- return ret;
- }
- #define load_funcall(arg, obj, sym, argc, argv) \
- check_load_arg(rb_funcallv(obj, sym, argc, argv), arg, name_##sym)
- static void clear_load_arg(struct load_arg *arg);
- static void
- mark_load_arg(void *ptr)
- {
- struct load_arg *p = ptr;
- if (!p->symbols)
- return;
- rb_mark_tbl(p->symbols);
- rb_mark_tbl(p->data);
- rb_mark_hash(p->compat_tbl);
- }
- static void
- free_load_arg(void *ptr)
- {
- clear_load_arg(ptr);
- xfree(ptr);
- }
- static size_t
- memsize_load_arg(const void *ptr)
- {
- return sizeof(struct load_arg);
- }
- static const rb_data_type_t load_arg_data = {
- "load_arg",
- {mark_load_arg, free_load_arg, memsize_load_arg,},
- 0, 0, RUBY_TYPED_FREE_IMMEDIATELY
- };
- #define r_entry(v, arg) r_entry0((v), (arg)->data->num_entries, (arg))
- static VALUE r_object(struct load_arg *arg);
- static VALUE r_symbol(struct load_arg *arg);
- NORETURN(static void too_short(void));
- static void
- too_short(void)
- {
- rb_raise(rb_eArgError, "marshal data too short");
- }
- static st_index_t
- r_prepare(struct load_arg *arg)
- {
- st_index_t idx = arg->data->num_entries;
- st_insert(arg->data, (st_data_t)idx, (st_data_t)Qundef);
- return idx;
- }
- static unsigned char
- r_byte1_buffered(struct load_arg *arg)
- {
- if (arg->buflen == 0) {
- long readable = arg->readable < BUFSIZ ? arg->readable : BUFSIZ;
- VALUE str, n = LONG2NUM(readable);
- str = load_funcall(arg, arg->src, s_read, 1, &n);
- if (NIL_P(str)) too_short();
- StringValue(str);
- memcpy(arg->buf, RSTRING_PTR(str), RSTRING_LEN(str));
- arg->offset = 0;
- arg->buflen = RSTRING_LEN(str);
- }
- arg->buflen--;
- return arg->buf[arg->offset++];
- }
- static int
- r_byte(struct load_arg *arg)
- {
- int c;
- if (RB_TYPE_P(arg->src, T_STRING)) {
- if (RSTRING_LEN(arg->src) > arg->offset) {
- c = (unsigned char)RSTRING_PTR(arg->src)[arg->offset++];
- }
- else {
- too_short();
- }
- }
- else {
- if (arg->readable >0 || arg->buflen > 0) {
- c = r_byte1_buffered(arg);
- }
- else {
- VALUE v = load_funcall(arg, arg->src, s_getbyte, 0, 0);
- if (NIL_P(v)) rb_eof_error();
- c = (unsigned char)NUM2CHR(v);
- }
- }
- return c;
- }
- NORETURN(static void long_toobig(int size));
- static void
- long_toobig(int size)
- {
- rb_raise(rb_eTypeError, "long too big for this architecture (size "
- STRINGIZE(SIZEOF_LONG)", given %d)", size);
- }
- static long
- r_long(struct load_arg *arg)
- {
- register long x;
- int c = (signed char)r_byte(arg);
- long i;
- if (c == 0) return 0;
- if (c > 0) {
- if (4 < c && c < 128) {
- return c - 5;
- }
- if (c > (int)sizeof(long)) long_toobig(c);
- x = 0;
- for (i=0;i<c;i++) {
- x |= (long)r_byte(arg) << (8*i);
- }
- }
- else {
- if (-129 < c && c < -4) {
- return c + 5;
- }
- c = -c;
- if (c > (int)sizeof(long)) long_toobig(c);
- x = -1;
- for (i=0;i<c;i++) {
- x &= ~((long)0xff << (8*i));
- x |= (long)r_byte(arg) << (8*i);
- }
- }
- return x;
- }
- long
- ruby_marshal_read_long(const char **buf, long len)
- {
- long x;
- struct RString src;
- struct load_arg arg;
- memset(&arg, 0, sizeof(arg));
- arg.src = rb_setup_fake_str(&src, *buf, len, 0);
- x = r_long(&arg);
- *buf += arg.offset;
- return x;
- }
- static VALUE
- r_bytes1(long len, struct load_arg *arg)
- {
- VALUE str, n = LONG2NUM(len);
- str = load_funcall(arg, arg->src, s_read, 1, &n);
- if (NIL_P(str)) too_short();
- StringValue(str);
- if (RSTRING_LEN(str) != len) too_short();
- return str;
- }
- static VALUE
- r_bytes1_buffered(long len, struct load_arg *arg)
- {
- VALUE str;
- if (len <= arg->buflen) {
- str = rb_str_new(arg->buf+arg->offset, len);
- arg->offset += len;
- arg->buflen -= len;
- }
- else {
- long buflen = arg->buflen;
- long readable = arg->readable + 1;
- long tmp_len, read_len, need_len = len - buflen;
- VALUE tmp, n;
- readable = readable < BUFSIZ ? readable : BUFSIZ;
- read_len = need_len > readable ? need_len : readable;
- n = LONG2NUM(read_len);
- tmp = load_funcall(arg, arg->src, s_read, 1, &n);
- if (NIL_P(tmp)) too_short();
- StringValue(tmp);
- tmp_len = RSTRING_LEN(tmp);
- if (tmp_len < need_len) too_short();
- str = rb_str_new(arg->buf+arg->offset, buflen);
- rb_str_cat(str, RSTRING_PTR(tmp), need_len);
- if (tmp_len > need_len) {
- buflen = tmp_len - need_len;
- memcpy(arg->buf, RSTRING_PTR(tmp)+need_len, buflen);
- arg->buflen = buflen;
- }
- else {
- arg->buflen = 0;
- }
- arg->offset = 0;
- }
- return str;
- }
- #define r_bytes(arg) r_bytes0(r_long(arg), (arg))
- static VALUE
- r_bytes0(long len, struct load_arg *arg)
- {
- VALUE str;
- if (len == 0) return rb_str_new(0, 0);
- if (RB_TYPE_P(arg->src, T_STRING)) {
- if (RSTRING_LEN(arg->src) - arg->offset >= len) {
- str = rb_str_new(RSTRING_PTR(arg->src)+arg->offset, len);
- arg->offset += len;
- }
- else {
- too_short();
- }
- }
- else {
- if (arg->readable > 0 || arg->buflen > 0) {
- str = r_bytes1_buffered(len, arg);
- }
- else {
- str = r_bytes1(len, arg);
- }
- }
- return str;
- }
- static inline int
- name_equal(const char *name, size_t nlen, const char *p, long l)
- {
- if ((size_t)l != nlen || *p != *name) return 0;
- return nlen == 1 || memcmp(p+1, name+1, nlen-1) == 0;
- }
- static int
- sym2encidx(VALUE sym, VALUE val)
- {
- static const char name_encoding[8] = "encoding";
- const char *p;
- long l;
- if (rb_enc_get_index(sym) != ENCINDEX_US_ASCII) return -1;
- RSTRING_GETMEM(sym, p, l);
- if (l <= 0) return -1;
- if (name_equal(name_encoding, sizeof(name_encoding), p, l)) {
- int idx = rb_enc_find_index(StringValueCStr(val));
- return idx;
- }
- if (name_equal(name_s_encoding_short, rb_strlen_lit(name_s_encoding_short), p, l)) {
- if (val == Qfalse) return rb_usascii_encindex();
- else if (val == Qtrue) return rb_utf8_encindex();
- /* bogus ignore */
- }
- return -1;
- }
- static int
- ruby2_keywords_flag_check(VALUE sym)
- {
- const char *p;
- long l;
- if (rb_enc_get_index(sym) != ENCINDEX_US_ASCII) return 0;
- RSTRING_GETMEM(sym, p, l);
- if (l <= 0) return 0;
- if (name_equal(name_s_ruby2_keywords_flag, rb_strlen_lit(name_s_ruby2_keywords_flag), p, l)) {
- return 1;
- }
- return 0;
- }
- static VALUE
- r_symlink(struct load_arg *arg)
- {
- st_data_t sym;
- long num = r_long(arg);
- if (!st_lookup(arg->symbols, num, &sym)) {
- rb_raise(rb_eArgError, "bad symbol");
- }
- return (VALUE)sym;
- }
- static VALUE
- r_symreal(struct load_arg *arg, int ivar)
- {
- VALUE s = r_bytes(arg);
- VALUE sym;
- int idx = -1;
- st_index_t n = arg->symbols->num_entries;
- if (rb_enc_str_asciionly_p(s)) rb_enc_associate_index(s, ENCINDEX_US_ASCII);
- st_insert(arg->symbols, (st_data_t)n, (st_data_t)s);
- if (ivar) {
- long num = r_long(arg);
- while (num-- > 0) {
- sym = r_symbol(arg);
- idx = sym2encidx(sym, r_object(arg));
- }
- }
- if (idx > 0) {
- rb_enc_associate_index(s, idx);
- if (rb_enc_str_coderange(s) == ENC_CODERANGE_BROKEN) {
- rb_raise(rb_eArgError, "invalid byte sequence in %s: %+"PRIsVALUE,
- rb_enc_name(rb_enc_from_index(idx)), s);
- }
- }
- return s;
- }
- static VALUE
- r_symbol(struct load_arg *arg)
- {
- int type, ivar = 0;
- again:
- switch ((type = r_byte(arg))) {
- default:
- rb_raise(rb_eArgError, "dump format error for symbol(0x%x)", type);
- case TYPE_IVAR:
- ivar = 1;
- goto again;
- case TYPE_SYMBOL:
- return r_symreal(arg, ivar);
- case TYPE_SYMLINK:
- if (ivar) {
- rb_raise(rb_eArgError, "dump format error (symlink with encoding)");
- }
- return r_symlink(arg);
- }
- }
- static VALUE
- r_unique(struct load_arg *arg)
- {
- return r_symbol(arg);
- }
- static VALUE
- r_string(struct load_arg *arg)
- {
- return r_bytes(arg);
- }
- static VALUE
- r_entry0(VALUE v, st_index_t num, struct load_arg *arg)
- {
- st_data_t real_obj = (st_data_t)v;
- if (arg->compat_tbl) {
- /* real_obj is kept if not found */
- st_lookup(arg->compat_tbl, v, &real_obj);
- }
- st_insert(arg->data, num, real_obj);
- return v;
- }
- static VALUE
- r_fixup_compat(VALUE v, struct load_arg *arg)
- {
- st_data_t data;
- st_data_t key = (st_data_t)v;
- if (arg->compat_tbl && st_delete(arg->compat_tbl, &key, &data)) {
- VALUE real_obj = (VALUE)data;
- rb_alloc_func_t allocator = rb_get_alloc_func(CLASS_OF(real_obj));
- if (st_lookup(compat_allocator_tbl, (st_data_t)allocator, &data)) {
- marshal_compat_t *compat = (marshal_compat_t*)data;
- compat->loader(real_obj, v);
- }
- v = real_obj;
- }
- return v;
- }
- static VALUE
- r_post_proc(VALUE v, struct load_arg *arg)
- {
- if (arg->proc) {
- v = load_funcall(arg, arg->proc, s_call, 1, &v);
- }
- return v;
- }
- static VALUE
- r_leave(VALUE v, struct load_arg *arg)
- {
- v = r_fixup_compat(v, arg);
- v = r_post_proc(v, arg);
- return v;
- }
- static int
- copy_ivar_i(st_data_t key, st_data_t val, st_data_t arg)
- {
- VALUE obj = (VALUE)arg, value = (VALUE)val;
- ID vid = (ID)key;
- if (!rb_ivar_defined(obj, vid))
- rb_ivar_set(obj, vid, value);
- return ST_CONTINUE;
- }
- static VALUE
- r_copy_ivar(VALUE v, VALUE data)
- {
- rb_ivar_foreach(data, copy_ivar_i, (st_data_t)v);
- return v;
- }
- static void
- r_ivar(VALUE obj, int *has_encoding, struct load_arg *arg)
- {
- long len;
- len = r_long(arg);
- if (len > 0) {
- do {
- VALUE sym = r_symbol(arg);
- VALUE val = r_object(arg);
- int idx = sym2encidx(sym, val);
- if (idx >= 0) {
- if (rb_enc_capable(obj)) {
- rb_enc_associate_index(obj, idx);
- }
- else {
- rb_raise(rb_eArgError, "%"PRIsVALUE" is not enc_capable", obj);
- }
- if (has_encoding) *has_encoding = TRUE;
- }
- else if (ruby2_keywords_flag_check(sym)) {
- if (RB_TYPE_P(obj, T_HASH)) {
- rb_hash_ruby2_keywords(obj);
- }
- else {
- rb_raise(rb_eArgError, "ruby2_keywords flag is given but %"PRIsVALUE" is not a Hash", obj);
- }
- }
- else {
- rb_ivar_set(obj, rb_intern_str(sym), val);
- }
- } while (--len > 0);
- }
- }
- static VALUE
- path2class(VALUE path)
- {
- VALUE v = rb_path_to_class(path);
- if (!RB_TYPE_P(v, T_CLASS)) {
- rb_raise(rb_eArgError, "%"PRIsVALUE" does not refer to class", path);
- }
- return v;
- }
- #define path2module(path) must_be_module(rb_path_to_class(path), path)
- static VALUE
- must_be_module(VALUE v, VALUE path)
- {
- if (!RB_TYPE_P(v, T_MODULE)) {
- rb_raise(rb_eArgError, "%"PRIsVALUE" does not refer to module", path);
- }
- return v;
- }
- static VALUE
- obj_alloc_by_klass(VALUE klass, struct load_arg *arg, VALUE *oldclass)
- {
- st_data_t data;
- rb_alloc_func_t allocator;
- allocator = rb_get_alloc_func(klass);
- if (st_lookup(compat_allocator_tbl, (st_data_t)allocator, &data)) {
- marshal_compat_t *compat = (marshal_compat_t*)data;
- VALUE real_obj = rb_obj_alloc(klass);
- VALUE obj = rb_obj_alloc(compat->oldclass);
- if (oldclass) *oldclass = compat->oldclass;
- if (!arg->compat_tbl) {
- arg->compat_tbl = rb_init_identtable();
- }
- st_insert(arg->compat_tbl, (st_data_t)obj, (st_data_t)real_obj);
- return obj;
- }
- return rb_obj_alloc(klass);
- }
- static VALUE
- obj_alloc_by_path(VALUE path, struct load_arg *arg)
- {
- return obj_alloc_by_klass(path2class(path), arg, 0);
- }
- static VALUE
- append_extmod(VALUE obj, VALUE extmod)
- {
- long i = RARRAY_LEN(extmod);
- while (i > 0) {
- VALUE m = RARRAY_AREF(extmod, --i);
- rb_extend_object(obj, m);
- }
- return obj;
- }
- #define prohibit_ivar(type, str) do { \
- if (!ivp || !*ivp) break; \
- rb_raise(rb_eTypeError, \
- "can't override instance variable of "type" `%"PRIsVALUE"'", \
- (str)); \
- } while (0)
- static VALUE
- r_object0(struct load_arg *arg, int *ivp, VALUE extmod)
- {
- VALUE v = Qnil;
- int type = r_byte(arg);
- long id;
- st_data_t link;
- switch (type) {
- case TYPE_LINK:
- id = r_long(arg);
- if (!st_lookup(arg->data, (st_data_t)id, &link)) {
- rb_raise(rb_eArgError, "dump format error (unlinked)");
- }
- v = (VALUE)link;
- v = r_post_proc(v, arg);
- break;
- case TYPE_IVAR:
- {
- int ivar = TRUE;
- v = r_object0(arg, &ivar, extmod);
- if (ivar) r_ivar(v, NULL, arg);
- if (RB_TYPE_P(v, T_STRING)) {
- v = r_leave(v, arg);
- }
- }
- break;
- case TYPE_EXTENDED:
- {
- VALUE path = r_unique(arg);
- VALUE m = rb_path_to_class(path);
- if (NIL_P(extmod)) extmod = rb_ary_tmp_new(0);
- if (RB_TYPE_P(m, T_CLASS)) { /* prepended */
- VALUE c;
- v = r_object0(arg, 0, Qnil);
- c = CLASS_OF(v);
- if (c != m || FL_TEST(c, FL_SINGLETON)) {
- rb_raise(rb_eArgError,
- "prepended class %"PRIsVALUE" differs from class %"PRIsVALUE,
- path, rb_class_name(c));
- }
- c = rb_singleton_class(v);
- while (RARRAY_LEN(extmod) > 0) {
- m = rb_ary_pop(extmod);
- rb_prepend_module(c, m);
- }
- }
- else {
- must_be_module(m, path);
- rb_ary_push(extmod, m);
- v = r_object0(arg, 0, extmod);
- while (RARRAY_LEN(extmod) > 0) {
- m = rb_ary_pop(extmod);
- rb_extend_object(v, m);
- }
- }
- }
- break;
- case TYPE_UCLASS:
- {
- VALUE c = path2class(r_unique(arg));
- if (FL_TEST(c, FL_SINGLETON)) {
- rb_raise(rb_eTypeError, "singleton can't be loaded");
- }
- v = r_object0(arg, 0, extmod);
- if (rb_special_const_p(v) || RB_TYPE_P(v, T_OBJECT) || RB_TYPE_P(v, T_CLASS)) {
- goto format_error;
- }
- if (RB_TYPE_P(v, T_MODULE) || !RTEST(rb_class_inherited_p(c, RBASIC(v)->klass))) {
- VALUE tmp = rb_obj_alloc(c);
- if (TYPE(v) != TYPE(tmp)) goto format_error;
- }
- RBASIC_SET_CLASS(v, c);
- }
- break;
- format_error:
- rb_raise(rb_eArgError, "dump format error (user class)");
- case TYPE_NIL:
- v = Qnil;
- v = r_leave(v, arg);
- break;
- case TYPE_TRUE:
- v = Qtrue;
- v = r_leave(v, arg);
- break;
- case TYPE_FALSE:
- v = Qfalse;
- v = r_leave(v, arg);
- break;
- case TYPE_FIXNUM:
- {
- long i = r_long(arg);
- v = LONG2FIX(i);
- }
- v = r_leave(v, arg);
- break;
- case TYPE_FLOAT:
- {
- double d;
- VALUE str = r_bytes(arg);
- const char *ptr = RSTRING_PTR(str);
- if (strcmp(ptr, "nan") == 0) {
- d = nan("");
- }
- else if (strcmp(ptr, "inf") == 0) {
- d = HUGE_VAL;
- }
- else if (strcmp(ptr, "-inf") == 0) {
- d = -HUGE_VAL;
- }
- else {
- char *e;
- d = strtod(ptr, &e);
- d = load_mantissa(d, e, RSTRING_LEN(str) - (e - ptr));
- }
- v = DBL2NUM(d);
- v = r_entry(v, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_BIGNUM:
- {
- long len;
- VALUE data;
- int sign;
- sign = r_byte(arg);
- len = r_long(arg);
- data = r_bytes0(len * 2, arg);
- v = rb_integer_unpack(RSTRING_PTR(data), len, 2, 0,
- INTEGER_PACK_LITTLE_ENDIAN | (sign == '-' ? INTEGER_PACK_NEGATIVE : 0));
- rb_str_resize(data, 0L);
- v = r_entry(v, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_STRING:
- v = r_entry(r_string(arg), arg);
- if (!ivp) {
- v = r_leave(v, arg);
- }
- break;
- case TYPE_REGEXP:
- {
- VALUE str = r_bytes(arg);
- int options = r_byte(arg);
- int has_encoding = FALSE;
- st_index_t idx = r_prepare(arg);
- if (ivp) {
- r_ivar(str, &has_encoding, arg);
- *ivp = FALSE;
- }
- if (!has_encoding) {
- /* 1.8 compatibility; remove escapes undefined in 1.8 */
- char *ptr = RSTRING_PTR(str), *dst = ptr, *src = ptr;
- long len = RSTRING_LEN(str);
- long bs = 0;
- for (; len-- > 0; *dst++ = *src++) {
- switch (*src) {
- case '\\': bs++; break;
- case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
- case 'm': case 'o': case 'p': case 'q': case 'u': case 'y':
- case 'E': case 'F': case 'H': case 'I': case 'J': case 'K':
- case 'L': case 'N': case 'O': case 'P': case 'Q': case 'R':
- case 'S': case 'T': case 'U': case 'V': case 'X': case 'Y':
- if (bs & 1) --dst;
- /* fall through */
- default: bs = 0; break;
- }
- }
- rb_str_set_len(str, dst - ptr);
- }
- v = r_entry0(rb_reg_new_str(str, options), idx, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_ARRAY:
- {
- long len = r_long(arg);
- v = rb_ary_new2(len);
- v = r_entry(v, arg);
- arg->readable += len - 1;
- while (len--) {
- rb_ary_push(v, r_object(arg));
- arg->readable--;
- }
- v = r_leave(v, arg);
- arg->readable++;
- }
- break;
- case TYPE_HASH:
- case TYPE_HASH_DEF:
- {
- long len = r_long(arg);
- v = rb_hash_new_with_size(len);
- v = r_entry(v, arg);
- arg->readable += (len - 1) * 2;
- while (len--) {
- VALUE key = r_object(arg);
- VALUE value = r_object(arg);
- rb_hash_aset(v, key, value);
- arg->readable -= 2;
- }
- arg->readable += 2;
- if (type == TYPE_HASH_DEF) {
- RHASH_SET_IFNONE(v, r_object(arg));
- }
- v = r_leave(v, arg);
- }
- break;
- case TYPE_STRUCT:
- {
- VALUE mem, values;
- long i;
- VALUE slot;
- st_index_t idx = r_prepare(arg);
- VALUE klass = path2class(r_unique(arg));
- long len = r_long(arg);
- v = rb_obj_alloc(klass);
- if (!RB_TYPE_P(v, T_STRUCT)) {
- rb_raise(rb_eTypeError, "class %"PRIsVALUE" not a struct", rb_class_name(klass));
- }
- mem = rb_struct_s_members(klass);
- if (RARRAY_LEN(mem) != len) {
- rb_raise(rb_eTypeError, "struct %"PRIsVALUE" not compatible (struct size differs)",
- rb_class_name(klass));
- }
- arg->readable += (len - 1) * 2;
- v = r_entry0(v, idx, arg);
- values = rb_ary_new2(len);
- {
- VALUE keywords = Qfalse;
- if (RTEST(rb_struct_s_keyword_init(klass))) {
- keywords = rb_hash_new();
- rb_ary_push(values, keywords);
- }
- for (i=0; i<len; i++) {
- VALUE n = rb_sym2str(RARRAY_AREF(mem, i));
- slot = r_symbol(arg);
- if (!rb_str_equal(n, slot)) {
- rb_raise(rb_eTypeError, "struct %"PRIsVALUE" not compatible (:%"PRIsVALUE" for :%"PRIsVALUE")",
- rb_class_name(klass),
- slot, n);
- }
- if (keywords) {
- rb_hash_aset(keywords, RARRAY_AREF(mem, i), r_object(arg));
- }
- else {
- rb_ary_push(values, r_object(arg));
- }
- arg->readable -= 2;
- }
- }
- rb_struct_initialize(v, values);
- v = r_leave(v, arg);
- arg->readable += 2;
- }
- break;
- case TYPE_USERDEF:
- {
- VALUE name = r_unique(arg);
- VALUE klass = path2class(name);
- VALUE data;
- st_data_t d;
- if (!rb_obj_respond_to(klass, s_load, TRUE)) {
- rb_raise(rb_eTypeError, "class %"PRIsVALUE" needs to have method `_load'",
- name);
- }
- data = r_string(arg);
- if (ivp) {
- r_ivar(data, NULL, arg);
- *ivp = FALSE;
- }
- v = load_funcall(arg, klass, s_load, 1, &data);
- v = r_entry(v, arg);
- if (st_lookup(compat_allocator_tbl, (st_data_t)rb_get_alloc_func(klass), &d)) {
- marshal_compat_t *compat = (marshal_compat_t*)d;
- v = compat->loader(klass, v);
- }
- v = r_post_proc(v, arg);
- }
- break;
- case TYPE_USRMARSHAL:
- {
- VALUE name = r_unique(arg);
- VALUE klass = path2class(name);
- VALUE oldclass = 0;
- VALUE data;
- v = obj_alloc_by_klass(klass, arg, &oldclass);
- if (!NIL_P(extmod)) {
- /* for the case marshal_load is overridden */
- append_extmod(v, extmod);
- }
- if (!rb_obj_respond_to(v, s_mload, TRUE)) {
- rb_raise(rb_eTypeError, "instance of %"PRIsVALUE" needs to have method `marshal_load'",
- name);
- }
- v = r_entry(v, arg);
- data = r_object(arg);
- load_funcall(arg, v, s_mload, 1, &data);
- v = r_fixup_compat(v, arg);
- v = r_copy_ivar(v, data);
- v = r_post_proc(v, arg);
- if (!NIL_P(extmod)) {
- if (oldclass) append_extmod(v, extmod);
- rb_ary_clear(extmod);
- }
- }
- break;
- case TYPE_OBJECT:
- {
- st_index_t idx = r_prepare(arg);
- v = obj_alloc_by_path(r_unique(arg), arg);
- if (!RB_TYPE_P(v, T_OBJECT)) {
- rb_raise(rb_eArgError, "dump format error");
- }
- v = r_entry0(v, idx, arg);
- r_ivar(v, NULL, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_DATA:
- {
- VALUE name = r_unique(arg);
- VALUE klass = path2class(name);
- VALUE oldclass = 0;
- VALUE r;
- v = obj_alloc_by_klass(klass, arg, &oldclass);
- if (!RB_TYPE_P(v, T_DATA)) {
- rb_raise(rb_eArgError, "dump format error");
- }
- v = r_entry(v, arg);
- if (!rb_obj_respond_to(v, s_load_data, TRUE)) {
- rb_raise(rb_eTypeError,
- "class %"PRIsVALUE" needs to have instance method `_load_data'",
- name);
- }
- r = r_object0(arg, 0, extmod);
- load_funcall(arg, v, s_load_data, 1, &r);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_MODULE_OLD:
- {
- VALUE str = r_bytes(arg);
- v = rb_path_to_class(str);
- prohibit_ivar("class/module", str);
- v = r_entry(v, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_CLASS:
- {
- VALUE str = r_bytes(arg);
- v = path2class(str);
- prohibit_ivar("class", str);
- v = r_entry(v, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_MODULE:
- {
- VALUE str = r_bytes(arg);
- v = path2module(str);
- prohibit_ivar("module", str);
- v = r_entry(v, arg);
- v = r_leave(v, arg);
- }
- break;
- case TYPE_SYMBOL:
- if (ivp) {
- v = r_symreal(arg, *ivp);
- *ivp = FALSE;
- }
- else {
- v = r_symreal(arg, 0);
- }
- v = rb_str_intern(v);
- v = r_leave(v, arg);
- break;
- case TYPE_SYMLINK:
- v = rb_str_intern(r_symlink(arg));
- break;
- default:
- rb_raise(rb_eArgError, "dump format error(0x%x)", type);
- break;
- }
- if (v == Qundef) {
- rb_raise(rb_eArgError, "dump format error (bad link)");
- }
- return v;
- }…
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