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object.c
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object.c
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/*
* MacRuby implementation of Ruby 1.9's object.c.
*
* This file is covered by the Ruby license. See COPYING for more details.
*
* Copyright (C) 2012, The MacRuby Team. All rights reserved.
* Copyright (C) 2007-2011, Apple Inc. All rights reserved.
* Copyright (C) 1993-2007 Yukihiro Matsumoto
* Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
* Copyright (C) 2000 Information-technology Promotion Agency, Japan
*/
#include "macruby_internal.h"
#include "ruby/st.h"
#include "ruby/util.h"
#include "ruby/node.h"
#include "id.h"
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <math.h>
#include <float.h>
#include "objc.h"
#include "vm.h"
#include "encoding.h"
#include "array.h"
#include "hash.h"
#include "class.h"
VALUE rb_cBasicObject;
VALUE rb_mKernel;
VALUE rb_cNSObject;
VALUE rb_cObject;
VALUE rb_cRubyObject;
VALUE rb_cModule;
VALUE rb_cModuleObject;
VALUE rb_cClass;
VALUE rb_cData;
VALUE rb_cNilClass;
VALUE rb_cTrueClass;
VALUE rb_cFalseClass;
static ID id_eq, id_match, id_inspect, id_init_copy;
static SEL eqlSel = 0;
VALUE
rb_send_dup(VALUE obj)
{
return rb_vm_call(obj, selDup, 0, NULL);
}
/*
* call-seq:
* obj === other => true or false
*
* Case Equality---For class <code>Object</code>, effectively the same
* as calling <code>#==</code>, but typically overridden by descendents
* to provide meaningful semantics in <code>case</code> statements.
*/
VALUE
rb_equal(VALUE obj1, VALUE obj2)
{
if (obj1 == obj2) {
return Qtrue;
}
VALUE result = rb_vm_call(obj1, selEq, 1, &obj2);
if (RTEST(result)) {
return Qtrue;
}
return Qfalse;
}
static VALUE
rb_equal_imp(VALUE obj1, SEL sel, VALUE obj2)
{
return rb_equal(obj1, obj2);
}
int
rb_eql(VALUE obj1, VALUE obj2)
{
VALUE obj1_class = CLASS_OF(obj1);
if (obj1_class == rb_cFixnum || obj1_class == rb_cFloat
|| obj1_class == rb_cSymbol) {
return obj1 == obj2;
}
VALUE obj2_class = CLASS_OF(obj2);
if (obj1_class == obj2_class) {
if (obj1_class == rb_cRubyString) {
return rstr_compare(RSTR(obj1), RSTR(obj2)) == 0;
}
if (obj1_class == rb_cRubyArray) {
return rary_eql_fast(RARY(obj1), RARY(obj2));
}
}
return RTEST(rb_vm_call(obj1, eqlSel, 1, &obj2));
}
/*
* call-seq:
* obj == other => true or false
* obj.equal?(other) => true or false
* obj.eql?(other) => true or false
*
* Equality---At the <code>Object</code> level, <code>==</code> returns
* <code>true</code> only if <i>obj</i> and <i>other</i> are the
* same object. Typically, this method is overridden in descendent
* classes to provide class-specific meaning.
*
* Unlike <code>==</code>, the <code>equal?</code> method should never be
* overridden by subclasses: it is used to determine object identity
* (that is, <code>a.equal?(b)</code> iff <code>a</code> is the same
* object as <code>b</code>).
*
* The <code>eql?</code> method returns <code>true</code> if
* <i>obj</i> and <i>anObject</i> have the same value. Used by
* <code>Hash</code> to test members for equality. For objects of
* class <code>Object</code>, <code>eql?</code> is synonymous with
* <code>==</code>. Subclasses normally continue this tradition, but
* there are exceptions. <code>Numeric</code> types, for example,
* perform type conversion across <code>==</code>, but not across
* <code>eql?</code>, so:
*
* 1 == 1.0 #=> true
* 1.eql? 1.0 #=> false
*/
static VALUE
rb_obj_equal(VALUE obj1, SEL sel, VALUE obj2)
{
return obj1 == obj2 ? Qtrue : Qfalse;
}
static VALUE
rb_nsobj_equal(VALUE obj1, SEL sel, VALUE obj2)
{
return rb_objc_isEqual(obj1, obj2) ? Qtrue : Qfalse;
}
static VALUE
rb_obj_hash(VALUE obj, SEL sel)
{
VALUE oid = rb_obj_id(obj, sel);
st_index_t h = rb_hash_end(rb_hash_start(NUM2LONG(oid)));
return LONG2FIX(h);
}
/*
* call-seq:
* !obj => true or false
*
* Boolean negate.
*/
static VALUE
rb_obj_not(VALUE obj, SEL sel)
{
return RTEST(obj) ? Qfalse : Qtrue;
}
/*
* call-seq:
* obj != other => true or false
*
* Returns true if two objects are not-equal, otherwise false.
*/
static VALUE
rb_obj_not_equal(VALUE obj1, SEL sel, VALUE obj2)
{
VALUE result = rb_vm_call(obj1, selEq, 1, &obj2);
return RTEST(result) ? Qfalse : Qtrue;
}
/*
* call-seq:
* obj.class => class
*
* Returns the class of <i>obj</i>, now preferred over
* <code>Object#type</code>, as an object's type in Ruby is only
* loosely tied to that object's class. This method must always be
* called with an explicit receiver, as <code>class</code> is also a
* reserved word in Ruby.
*
* 1.class #=> Fixnum
* self.class #=> Object
*/
VALUE
rb_obj_class(VALUE obj)
{
return rb_class_real(CLASS_OF(obj), true);
}
/*
* call-seq:
* obj.singleton_class -> class
*
* Returns the singleton class of <i>obj</i>. This method creates
* a new singleton class if <i>obj</i> does not have it.
*
* If <i>obj</i> is <code>nil</code>, <code>true</code>, or
* <code>false</code>, it returns NilClass, TrueClass, or FalseClass,
* respectively.
* If <i>obj</i> is a Fixnum or a Symbol, it raises a TypeError.
*
* Object.new.singleton_class #=> #<Class:#<Object:0xb7ce1e24>>
* String.singleton_class #=> #<Class:String>
* nil.singleton_class #=> NilClass
*/
static VALUE
rb_obj_singleton_class(VALUE obj, SEL sel)
{
return rb_singleton_class(obj);
}
static void
init_copy(VALUE dest, VALUE obj)
{
if (OBJ_FROZEN(dest)) {
rb_raise(rb_eTypeError, "[bug] frozen object (%s) allocated",
rb_obj_classname(dest));
}
rb_copy_generic_ivar(dest, obj);
rb_gc_copy_finalizer(dest, obj);
switch (TYPE(obj)) {
case T_OBJECT:
if (ROBJECT(obj)->num_slots > 0) {
if (ROBJECT(dest)->num_slots < ROBJECT(obj)->num_slots) {
rb_vm_regrow_robject_slots(ROBJECT(dest),
ROBJECT(obj)->num_slots);
}
for (int i = 0; i < ROBJECT(obj)->num_slots; i++) {
rb_object_ivar_slot_t *dest_sl = &ROBJECT(dest)->slots[i];
rb_object_ivar_slot_t *orig_sl = &ROBJECT(obj)->slots[i];
dest_sl->name = orig_sl->name;
GC_WB(&dest_sl->value, orig_sl->value);
}
}
ROBJECT(dest)->num_slots = ROBJECT(obj)->num_slots;
break;
}
}
void
rb_obj_invoke_initialize_copy(VALUE dest, VALUE obj)
{
init_copy(dest, obj);
rb_vm_call(dest, selInitializeCopy, 1, &obj);
}
/*
* call-seq:
* obj.clone -> an_object
*
* Produces a shallow copy of <i>obj</i>---the instance variables of
* <i>obj</i> are copied, but not the objects they reference. Copies
* the frozen and tainted state of <i>obj</i>. See also the discussion
* under <code>Object#dup</code>.
*
* class Klass
* attr_accessor :str
* end
* s1 = Klass.new #=> #<Klass:0x401b3a38>
* s1.str = "Hello" #=> "Hello"
* s2 = s1.clone #=> #<Klass:0x401b3998 @str="Hello">
* s2.str[1,4] = "i" #=> "i"
* s1.inspect #=> "#<Klass:0x401b3a38 @str=\"Hi\">"
* s2.inspect #=> "#<Klass:0x401b3998 @str=\"Hi\">"
*
* This method may have class-specific behavior. If so, that
* behavior will be documented under the #+initialize_copy+ method of
* the class.
*/
static VALUE rb_class_s_alloc(VALUE, SEL);
static VALUE
rb_obj_clone_imp(VALUE obj, SEL sel)
{
if (rb_special_const_p(obj) || TYPE(obj) == T_SYMBOL) {
rb_raise(rb_eTypeError, "can't clone %s", rb_obj_classname(obj));
}
// #alloc
VALUE clone;
switch (TYPE(obj)) {
case T_CLASS:
case T_MODULE:
clone = rb_class_s_alloc(Qnil, 0);
break;
default:
clone = rb_obj_alloc(rb_obj_class(obj));
do {
VALUE klass = rb_singleton_class_clone(obj);
if (klass != RBASIC(obj)->klass) {
RBASIC(clone)->klass = klass;
}
}
while (0);
break;
}
// #initialize_copy
init_copy(clone, obj);
rb_vm_call(clone, selInitializeClone, 1, &obj);
// Copy flags.
OBJ_INFECT(clone, obj);
if (OBJ_FROZEN(obj)) {
OBJ_FREEZE(clone);
}
return clone;
}
VALUE
rb_obj_clone(VALUE obj)
{
return rb_obj_clone_imp(obj, 0);
}
/*
* call-seq:
* obj.dup -> an_object
*
* Produces a shallow copy of <i>obj</i>---the instance variables of
* <i>obj</i> are copied, but not the objects they reference.
* <code>dup</code> copies the tainted state of <i>obj</i>. See also
* the discussion under <code>Object#clone</code>. In general,
* <code>clone</code> and <code>dup</code> may have different semantics
* in descendent classes. While <code>clone</code> is used to duplicate
* an object, including its internal state, <code>dup</code> typically
* uses the class of the descendent object to create the new instance.
*
* This method may have class-specific behavior. If so, that
* behavior will be documented under the #+initialize_copy+ method of
* the class.
*/
VALUE
rb_obj_dup(VALUE obj)
{
VALUE dup;
if (rb_special_const_p(obj) || TYPE(obj) == T_SYMBOL) {
rb_raise(rb_eTypeError, "can't dup %s", rb_obj_classname(obj));
}
dup = rb_obj_alloc(rb_obj_class(obj));
init_copy(dup, obj);
rb_vm_call(dup, selInitializeDup, 1, &obj);
OBJ_INFECT(dup, obj);
return dup;
}
static VALUE
rb_obj_type(VALUE obj)
{
return LONG2FIX(TYPE(obj));
}
/* :nodoc: */
VALUE
rb_obj_init_copy(VALUE obj, SEL sel, VALUE orig)
{
if (obj == orig) {
return obj;
}
rb_check_frozen(obj);
if (rb_obj_class(obj) != rb_obj_class(orig)) {
rb_raise(rb_eTypeError,
"initialize_copy should take same class object");
}
return obj;
}
/* :nodoc: */
VALUE
rb_obj_init_dup_clone(VALUE obj, SEL sel, VALUE orig)
{
rb_vm_call(obj, selInitializeCopy, 1, &orig);
return obj;
}
static VALUE
rb_nsobj_dup(VALUE obj, VALUE sel)
{
return rb_obj_dup(obj);
}
/*
* call-seq:
* obj.to_s => string
*
* Returns a string representing <i>obj</i>. The default
* <code>to_s</code> prints the object's class and an encoding of the
* object id. As a special case, the top-level object that is the
* initial execution context of Ruby programs returns ``main.''
*/
VALUE
rb_any_to_string(VALUE obj, SEL sel)
{
const char *cname = rb_obj_classname(obj);
VALUE str = rb_sprintf("#<%s:%p>", cname, (void*)obj);
OBJ_INFECT(str, obj);
return str;
}
VALUE
rb_any_to_s(VALUE obj)
{
return rb_any_to_string(obj, 0);
}
VALUE
rb_inspect(VALUE obj)
{
return rb_obj_as_string(rb_funcall(obj, id_inspect, 0, 0));
}
static int
inspect_i(ID id, VALUE value, VALUE str)
{
if (!rb_is_instance_id(id)) {
return ST_CONTINUE;
}
const char *cstr = RSTRING_PTR(str);
if (cstr[0] == '-') { /* first element */
rb_str_update(str, 0, 0, rb_str_new2("#"));
rb_str_cat2(str, " ");
}
else {
rb_str_cat2(str, " ");
}
const char *ivname = rb_id2name(id);
rb_str_cat2(str, ivname);
rb_str_cat2(str, "=");
VALUE str2 = rb_inspect(value);
rb_str_append(str, str2);
OBJ_INFECT(str, str2);
return ST_CONTINUE;
}
static VALUE
inspect_obj(VALUE obj, VALUE str, int recur)
{
if (recur) {
rb_str_cat2(str, " ...");
}
else {
rb_ivar_foreach(obj, inspect_i, str);
}
rb_str_cat2(str, ">");
OBJ_INFECT(str, obj);
return str;
}
/*
* call-seq:
* obj.inspect => string
*
* Returns a string containing a human-readable representation of
* <i>obj</i>. If not overridden, uses the <code>to_s</code> method to
* generate the string.
*
* [ 1, 2, 3..4, 'five' ].inspect #=> "[1, 2, 3..4, \"five\"]"
* Time.new.inspect #=> "2008-03-08 19:43:39 +0900"
*/
static VALUE
rb_obj_inspect(VALUE obj, SEL sel)
{
if (TYPE(obj) == T_OBJECT) {
for (int i = 0; i < ROBJECT(obj)->num_slots; i++) {
if (ROBJECT(obj)->slots[i].value != Qundef) {
// There is at least an ivar.
const char *c = rb_obj_classname(obj);
VALUE str = rb_sprintf("#<%s:%p", c, (void*)obj);
return rb_exec_recursive(inspect_obj, obj, str);
}
}
}
else if (!SPECIAL_CONST_P(obj) &&
!(RCLASS_RUBY(obj) || RCLASS_RUBY(RBASIC(obj)->klass))) {
return rb_str_new3(rb_vm_call(obj, selDescription, 0, 0));
}
return rb_funcall(obj, rb_intern("to_s"), 0, 0);
}
/*
* call-seq:
* obj.instance_of?(class) => true or false
*
* Returns <code>true</code> if <i>obj</i> is an instance of the given
* class. See also <code>Object#kind_of?</code>.
*/
VALUE
rb_obj_is_instance_of(VALUE obj, VALUE c)
{
switch (TYPE(c)) {
case T_MODULE:
case T_CLASS:
case T_ICLASS:
break;
default:
rb_raise(rb_eTypeError, "class or module required");
}
if (rb_obj_class(obj) == c) {
return Qtrue;
}
return Qfalse;
}
static VALUE
rb_obj_is_instance_of_imp(VALUE obj, SEL sel, VALUE c)
{
return rb_obj_is_instance_of(obj, c);
}
/*
* call-seq:
* obj.is_a?(class) => true or false
* obj.kind_of?(class) => true or false
*
* Returns <code>true</code> if <i>class</i> is the class of
* <i>obj</i>, or if <i>class</i> is one of the superclasses of
* <i>obj</i> or modules included in <i>obj</i>.
*
* module M; end
* class A
* include M
* end
* class B < A; end
* class C < B; end
* b = B.new
* b.instance_of? A #=> false
* b.instance_of? B #=> true
* b.instance_of? C #=> false
* b.instance_of? M #=> false
* b.kind_of? A #=> true
* b.kind_of? B #=> true
* b.kind_of? C #=> false
* b.kind_of? M #=> true
*/
VALUE
rb_obj_is_kind_of(VALUE obj, VALUE c)
{
VALUE cl = CLASS_OF(obj);
bool is_module = false;
switch (TYPE(c)) {
case T_MODULE:
is_module = true;
// fall through
case T_CLASS:
case T_ICLASS:
break;
default:
rb_raise(rb_eTypeError, "class or module required");
}
const int t = TYPE(obj);
if (c == rb_cRubyString && t == T_STRING) {
return Qtrue;
}
if (c == rb_cRubyArray && t == T_ARRAY) {
return Qtrue;
}
if (c == rb_cRubyHash && t == T_HASH) {
return Qtrue;
}
if (RCLASS_META(cl)) {
is_module = true;
}
while (cl != 0) {
if (cl == c) {
return Qtrue;
}
if (is_module) {
VALUE ary = rb_attr_get(cl, idIncludedModules);
if (ary != Qnil) {
for (int i = 0, count = RARRAY_LEN(ary); i < count; i++) {
VALUE imod = RARRAY_AT(ary, i);
if (imod == c) {
return Qtrue;
}
}
}
}
cl = RCLASS_SUPER(cl);
}
return Qfalse;
}
static VALUE
rb_obj_is_kind_of_imp(VALUE obj, SEL sel, VALUE c)
{
return rb_obj_is_kind_of(obj, c);
}
/*
* call-seq:
* obj.tap{|x|...} => obj
*
* Yields <code>x</code> to the block, and then returns <code>x</code>.
* The primary purpose of this method is to "tap into" a method chain,
* in order to perform operations on intermediate results within the chain.
*
* (1..10) .tap {|x| puts "original: #{x.inspect}"}
* .to_a .tap {|x| puts "array: #{x.inspect}"}
* .select {|x| x%2==0} .tap {|x| puts "evens: #{x.inspect}"}
* .map { |x| x*x } .tap {|x| puts "squares: #{x.inspect}"}
*
*/
static VALUE
rb_obj_tap(VALUE obj, SEL sel)
{
rb_yield(obj);
return obj;
}
/*
* Document-method: inherited
*
* call-seq:
* inherited(subclass)
*
* Callback invoked whenever a subclass of the current class is created.
*
* Example:
*
* class Foo
* def self.inherited(subclass)
* puts "New subclass: #{subclass}"
* end
* end
*
* class Bar < Foo
* end
*
* class Baz < Bar
* end
*
* produces:
*
* New subclass: Bar
* New subclass: Baz
*/
/*
* Document-method: singleton_method_added
*
* call-seq:
* singleton_method_added(symbol)
*
* Invoked as a callback whenever a singleton method is added to the
* receiver.
*
* module Chatty
* def Chatty.singleton_method_added(id)
* puts "Adding #{id.id2name}"
* end
* def self.one() end
* def two() end
* def Chatty.three() end
* end
*
* <em>produces:</em>
*
* Adding singleton_method_added
* Adding one
* Adding three
*
*/
/*
* Document-method: singleton_method_removed
*
* call-seq:
* singleton_method_removed(symbol)
*
* Invoked as a callback whenever a singleton method is removed from
* the receiver.
*
* module Chatty
* def Chatty.singleton_method_removed(id)
* puts "Removing #{id.id2name}"
* end
* def self.one() end
* def two() end
* def Chatty.three() end
* class <<self
* remove_method :three
* remove_method :one
* end
* end
*
* <em>produces:</em>
*
* Removing three
* Removing one
*/
/*
* Document-method: singleton_method_undefined
*
* call-seq:
* singleton_method_undefined(symbol)
*
* Invoked as a callback whenever a singleton method is undefined in
* the receiver.
*
* module Chatty
* def Chatty.singleton_method_undefined(id)
* puts "Undefining #{id.id2name}"
* end
* def Chatty.one() end
* class << self
* undef_method(:one)
* end
* end
*
* <em>produces:</em>
*
* Undefining one
*/
/*
* Document-method: included
*
* call-seq:
* included( othermod )
*
* Callback invoked whenever the receiver is included in another
* module or class. This should be used in preference to
* <tt>Module.append_features</tt> if your code wants to perform some
* action when a module is included in another.
*
* module A
* def A.included(mod)
* puts "#{self} included in #{mod}"
* end
* end
* module Enumerable
* include A
* end
*/
/*
* Not documented
*/
static VALUE
rb_obj_dummy(VALUE self, SEL sel)
{
return Qnil;
}
static VALUE
rb_obj_dummy2(VALUE self, SEL sel, VALUE other)
{
return Qnil;
}
// In order to mimic 1.9, we allow Floats to be tainted and untrusted, even
// though they are technically immediates.
static st_table *immediate_flags_tbl = 0;
/*
* call-seq:
* obj.tainted? => true or false
*
* Returns <code>true</code> if the object is tainted.
*/
static VALUE
rb_obj_tainted_p(VALUE obj, SEL sel)
{
if (SPECIAL_CONST_P(obj)) {
if (immediate_flags_tbl && FIXFLOAT_P(obj)) {
VALUE flags = 0;
if (st_lookup(immediate_flags_tbl, obj, &flags) && (flags & FL_TAINT)) {
return Qtrue;
}
}
return Qfalse;
}
else if (NATIVE(obj)) {
switch (TYPE(obj)) {
case T_SYMBOL:
return Qfalse;
case T_ARRAY:
if (rb_klass_is_rary(*(VALUE *)obj)) {
return RBASIC(obj)->flags & FL_TAINT ? Qtrue : Qfalse;
}
// fall through
case T_STRING:
if (rb_klass_is_rstr(*(VALUE *)obj)) {
return RBASIC(obj)->flags & FL_TAINT ? Qtrue : Qfalse;
}
// fall through
case T_HASH:
if (rb_klass_is_rhash(*(VALUE *)obj)) {
return RBASIC(obj)->flags & FL_TAINT ? Qtrue : Qfalse;
}
default:
return rb_objc_flag_check((const void *)obj, FL_TAINT)
? Qtrue : Qfalse;
}
}
if (FL_TEST(obj, FL_TAINT)) {
return Qtrue;
}
return Qfalse;
}
VALUE
rb_obj_tainted(VALUE obj)
{
return rb_obj_tainted_p(obj, 0);
}
/*
* call-seq:
* obj.taint -> obj
*
* Marks <i>obj</i> as tainted---if the <code>$SAFE</code> level is
* set appropriately, many method calls which might alter the running
* programs environment will refuse to accept tainted strings.
*/
static VALUE
rb_obj_taint_m(VALUE obj, SEL sel)
{
rb_secure(4);
if (SPECIAL_CONST_P(obj)) {
if (!FIXFLOAT_P(obj)) {
return obj;
}
else if (!immediate_flags_tbl) {
immediate_flags_tbl = st_init_numtable();
GC_RETAIN(immediate_flags_tbl);
st_insert(immediate_flags_tbl, obj, (st_data_t)FL_TAINT);
}
else {
VALUE flags = 0;
st_lookup(immediate_flags_tbl, obj, &flags);
flags |= FL_TAINT;
st_insert(immediate_flags_tbl, obj, (st_data_t)flags);
}
return obj;
}
else if (NATIVE(obj)) {
switch (TYPE(obj)) {
case T_SYMBOL:
return obj;
case T_ARRAY:
if (rb_klass_is_rary(*(VALUE *)obj)) {
RBASIC(obj)->flags |= FL_TAINT;
break;
}
// fall through
case T_STRING:
if (rb_klass_is_rstr(*(VALUE *)obj)) {
RBASIC(obj)->flags |= FL_TAINT;
break;
}
// fall through
case T_HASH:
if (rb_klass_is_rhash(*(VALUE *)obj)) {
RBASIC(obj)->flags |= FL_TAINT;
break;
}
default:
rb_objc_flag_set((const void *)obj, FL_TAINT, true);
}
return obj;
}
if (!OBJ_TAINTED(obj)) {
if (OBJ_FROZEN(obj)) {
rb_error_frozen("object");
}
FL_SET(obj, FL_TAINT);
}
return obj;
}
VALUE
rb_obj_taint(VALUE obj)
{
return rb_obj_taint_m(obj, 0);
}
/*
* call-seq:
* obj.untaint => obj
*
* Removes the taint from <i>obj</i>.
*/
static VALUE
rb_obj_untaint_m(VALUE obj, SEL sel)
{
rb_secure(3);
if (SPECIAL_CONST_P(obj)) {
if (immediate_flags_tbl && FIXFLOAT_P(obj)) {
VALUE flags = 0;
st_lookup(immediate_flags_tbl, obj, &flags);
flags &= ~FL_TAINT;
st_insert(immediate_flags_tbl, obj, (st_data_t)flags);
}
return obj;
}
else if (NATIVE(obj)) {
switch (TYPE(obj)) {
case T_SYMBOL:
return obj;
case T_ARRAY:
if (rb_klass_is_rary(*(VALUE *)obj)) {
RBASIC(obj)->flags &= ~FL_TAINT;
break;
}
// fall through
case T_STRING:
if (rb_klass_is_rstr(*(VALUE *)obj)) {
RBASIC(obj)->flags &= ~FL_TAINT;
break;
}
// fall through
case T_HASH:
if (rb_klass_is_rhash(*(VALUE *)obj)) {
RBASIC(obj)->flags &= ~FL_TAINT;
break;
}
default:
rb_objc_flag_set((const void *)obj, FL_TAINT, false);
}
return obj;
}
if (OBJ_TAINTED(obj)) {
if (OBJ_FROZEN(obj)) {
rb_error_frozen("object");
}
FL_UNSET(obj, FL_TAINT);
}
return obj;
}
VALUE
rb_obj_untaint(VALUE obj)
{
return rb_obj_untaint_m(obj, 0);
}
static VALUE
rb_obj_untrusted_imp(VALUE obj, SEL sel)
{
if (SPECIAL_CONST_P(obj)) {
if (immediate_flags_tbl && FIXFLOAT_P(obj)) {
VALUE flags = 0;
if (st_lookup(immediate_flags_tbl, obj, &flags) && (flags & FL_UNTRUSTED)) {
return Qtrue;
}
}
return Qfalse;
}
else if (NATIVE(obj)) {
switch (TYPE(obj)) {
case T_SYMBOL:
return Qfalse;
case T_ARRAY: