static void
mark_context_stack(mrb_state *mrb, struct mrb_context *c)
{
size_t i;
size_t e;
mrb_value nil;
int nregs;
if (c->stack == NULL) return;
e = c->stack - c->stbase;
if (c->ci) {
nregs = c->ci->argc + 2;
if (c->ci->nregs > nregs)
nregs = c->ci->nregs;
e += nregs;
}
if (c->stbase + e > c->stend) e = c->stend - c->stbase;
for (i=0; i<e; i++) {
mrb_value v = c->stbase[i];
if (!mrb_immediate_p(v)) {
mrb_gc_mark(mrb, mrb_basic_ptr(v));
}
}
e = c->stend - c->stbase;
nil = mrb_nil_value();
for (; i<e; i++) {
c->stbase[i] = nil;
}
}
static mrb_value
join_ary(mrb_state *mrb, mrb_value ary, mrb_value sep, mrb_value list)
{
mrb_int i;
mrb_value result, val, tmp;
/* check recursive */
for (i=0; i<RARRAY_LEN(list); i++) {
if (mrb_obj_equal(mrb, ary, RARRAY_PTR(list)[i])) {
mrb_raise(mrb, E_ARGUMENT_ERROR, "recursive array join");
}
}
mrb_ary_push(mrb, list, ary);
result = mrb_str_buf_new(mrb, 64);
for (i=0; i<RARRAY_LEN(ary); i++) {
if (i > 0 && !mrb_nil_p(sep)) {
mrb_str_cat_str(mrb, result, sep);
}
val = RARRAY_PTR(ary)[i];
switch (mrb_type(val)) {
case MRB_TT_ARRAY:
ary_join:
val = join_ary(mrb, val, sep, list);
/* fall through */
case MRB_TT_STRING:
str_join:
mrb_str_cat_str(mrb, result, val);
break;
default:
if (!mrb_immediate_p(val)) {
tmp = mrb_check_string_type(mrb, val);
if (!mrb_nil_p(tmp)) {
val = tmp;
goto str_join;
}
tmp = mrb_check_convert_type(mrb, val, MRB_TT_ARRAY, "Array", "to_ary");
if (!mrb_nil_p(tmp)) {
val = tmp;
goto ary_join;
}
}
val = mrb_obj_as_string(mrb, val);
goto str_join;
}
}
mrb_ary_pop(mrb, list);
return result;
}
static mrb_value
mrb_ary_cmp(mrb_state *mrb, mrb_value ary1)
{
mrb_value ary2;
mrb_get_args(mrb, "o", &ary2);
if (mrb_obj_equal(mrb, ary1, ary2)) return mrb_fixnum_value(0);
if (mrb_immediate_p(ary2)) return mrb_nil_value();
if (!mrb_array_p(ary2)) {
return mrb_nil_value();
}
return ary2;
}
static mrb_value
mrb_ary_eq(mrb_state *mrb, mrb_value ary1)
{
mrb_value ary2;
mrb_get_args(mrb, "o", &ary2);
if (mrb_obj_equal(mrb, ary1, ary2)) return mrb_true_value();
if (mrb_immediate_p(ary2)) return mrb_false_value();
if (!mrb_array_p(ary2)) {
return mrb_false_value();
}
if (RARRAY_LEN(ary1) != RARRAY_LEN(ary2)) return mrb_false_value();
return ary2;
}
MRB_API mrb_value
mrb_obj_dup(mrb_state *mrb, mrb_value obj)
{
struct RBasic *p;
mrb_value dup;
if (mrb_immediate_p(obj)) {
mrb_raisef(mrb, E_TYPE_ERROR, "can't dup %S", obj);
}
p = mrb_obj_alloc(mrb, mrb_type(obj), mrb_obj_class(mrb, obj));
dup = mrb_obj_value(p);
init_copy(mrb, dup, obj);
return dup;
}
/*
* 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 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.
*
* Some Class(True False Nil Symbol Fixnum Float) Object cannot clone.
*/
MRB_API mrb_value
mrb_obj_clone(mrb_state *mrb, mrb_value self)
{
struct RObject *p;
mrb_value clone;
if (mrb_immediate_p(self)) {
mrb_raisef(mrb, E_TYPE_ERROR, "can't clone %S", self);
}
p = (struct RObject*)mrb_obj_alloc(mrb, mrb_type(self), mrb_obj_class(mrb, self));
p->c = mrb_singleton_class_clone(mrb, self);
clone = mrb_obj_value(p);
init_copy(mrb, clone, self);
return clone;
}
/*
* 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 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.
*
* Some Class(True False Nil Symbol Fixnum Float) Object cannot clone.
*/
MRB_API mrb_value
mrb_obj_clone(mrb_state *mrb, mrb_value self)
{
struct RObject *p;
mrb_value clone;
if (mrb_immediate_p(self)) {
mrb_raisef(mrb, E_TYPE_ERROR, "can't clone %S", self);
}
if (mrb_type(self) == MRB_TT_SCLASS) {
mrb_raise(mrb, E_TYPE_ERROR, "can't clone singleton class");
}
p = (struct RObject*)mrb_obj_alloc(mrb, mrb_type(self), mrb_obj_class(mrb, self));
p->c = mrb_singleton_class_clone(mrb, self);
mrb_field_write_barrier(mrb, (struct RBasic*)p, (struct RBasic*)p->c);
clone = mrb_obj_value(p);
init_copy(mrb, clone, self);
return clone;
}
static void
mark_context_stack(mrb_state *mrb, struct mrb_context *c)
{
size_t i;
size_t e;
e = c->stack - c->stbase;
if (c->ci) e += c->ci->nregs;
if (c->stbase + e > c->stend) e = c->stend - c->stbase;
for (i=0; i<e; i++) {
mrb_value v = c->stbase[i];
if (!mrb_immediate_p(v)) {
if (mrb_basic_ptr(v)->tt == MRB_TT_FREE) {
c->stbase[i] = mrb_nil_value();
}
else {
mrb_gc_mark(mrb, mrb_basic_ptr(v));
}
}
}
}
MRB_API void
mrb_check_type(mrb_state *mrb, mrb_value x, enum mrb_vtype t)
{
const struct types *type = builtin_types;
enum mrb_vtype xt;
xt = mrb_type(x);
if ((xt != t) || (xt == MRB_TT_DATA)) {
while (type->type < MRB_TT_MAXDEFINE) {
if (type->type == t) {
const char *etype;
if (mrb_nil_p(x)) {
etype = "nil";
}
else if (mrb_fixnum_p(x)) {
etype = "Fixnum";
}
else if (mrb_type(x) == MRB_TT_SYMBOL) {
etype = "Symbol";
}
else if (mrb_immediate_p(x)) {
etype = RSTRING_PTR(mrb_obj_as_string(mrb, x));
}
else {
etype = mrb_obj_classname(mrb, x);
}
mrb_raisef(mrb, E_TYPE_ERROR, "wrong argument type %S (expected %S)",
mrb_str_new_cstr(mrb, etype), mrb_str_new_cstr(mrb, type->name));
}
type++;
}
mrb_raisef(mrb, E_TYPE_ERROR, "unknown type %S (%S given)",
mrb_fixnum_value(t), mrb_fixnum_value(mrb_type(x)));
}
}
/* mrb_gc_protect() leaves the object in the arena */
MRB_API void
mrb_gc_protect(mrb_state *mrb, mrb_value obj)
{
if (mrb_immediate_p(obj)) return;
gc_protect(mrb, mrb_basic_ptr(obj));
}
