mrb_value
mrb_range_eq(mrb_state *mrb, mrb_value range)
{
struct RRange *rr;
struct RRange *ro;
mrb_value obj;
mrb_get_args(mrb, "o", &obj);
if (mrb_obj_equal(mrb, range, obj)) return mrb_true_value();
/* same class? */
// if (!rb_obj_is_instance_of(obj, rb_obj_class(range)))
if (!mrb_obj_is_instance_of(mrb, obj, mrb_obj_class(mrb, range)))
return mrb_false_value();
rr = mrb_range_ptr(range);
ro = mrb_range_ptr(obj);
if (!mrb_obj_equal(mrb, rr->edges->beg, ro->edges->beg))
return mrb_false_value();
if (!mrb_obj_equal(mrb, rr->edges->end, ro->edges->end))
return mrb_false_value();
if (rr->excl != ro->excl)
return mrb_false_value();
return mrb_true_value();
}
/* 15.2.14.4.15(x) */
mrb_value
range_initialize_copy(mrb_state *mrb, mrb_value copy)
{
mrb_value src;
mrb_get_args(mrb, "o", &src);
if (mrb_obj_equal(mrb, copy, src)) return copy;
//mrb_check_frozen(copy);
if (!mrb_obj_is_instance_of(mrb, src, mrb_obj_class(mrb, copy))) {
mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
}
memcpy(mrb_range_ptr(copy), mrb_range_ptr(src), sizeof(struct RRange));
return copy;
}
/* 15.2.14.4.15(x) */
mrb_value
range_initialize_copy(mrb_state *mrb, mrb_value copy)
{
mrb_value src;
mrb_get_args(mrb, "o", &src);
if (mrb_obj_equal(mrb, copy, src)) return copy;
if (!mrb_obj_is_instance_of(mrb, src, mrb_obj_class(mrb, copy))) {
mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
}
*mrb_range_ptr(copy) = *mrb_range_ptr(src);
return copy;
}
/*
* call-seq:
* range.exclude_end? => true or false
*
* Returns <code>true</code> if <i>range</i> excludes its end value.
*/
mrb_value
mrb_range_excl(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
return mrb_bool_value(r->excl);
}
static mrb_value
recursive_eql(mrb_state *mrb, mrb_value range, mrb_value obj, int recur)
{
struct RRange *r = mrb_range_ptr(range);
struct RRange *o = mrb_range_ptr(obj);
if (recur) return mrb_true_value(); /* Subtle! */
if (!mrb_eql(mrb, r->edges->beg, o->edges->beg))
return mrb_false_value();
if (!mrb_eql(mrb, r->edges->end, o->edges->end))
return mrb_false_value();
if (r->excl != o->excl)
return mrb_false_value();
return mrb_true_value();
}
MRB_API mrb_bool
range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_bool trunc)
{
mrb_int beg, end, b, e;
struct RRange *r = mrb_range_ptr(range);
if (mrb_type(range) != MRB_TT_RANGE) return FALSE;
beg = b = mrb_int(mrb, r->edges->beg);
end = e = mrb_int(mrb, r->edges->end);
if (beg < 0) {
beg += len;
if (beg < 0) return FALSE;
}
if (trunc) {
if (beg > len) return FALSE;
if (end > len) end = len;
}
if (end < 0) end += len;
if (!r->excl && (!trunc || end < len))
end++; /* include end point */
len = end - beg;
if (len < 0) len = 0;
*begp = beg;
*lenp = len;
return TRUE;
}
/*
* call-seq:
* rng.cover?(obj) -> true or false
*
* Returns <code>true</code> if +obj+ is between the begin and end of
* the range.
*
* This tests <code>begin <= obj <= end</code> when #exclude_end? is +false+
* and <code>begin <= obj < end</code> when #exclude_end? is +true+.
*
* ("a".."z").cover?("c") #=> true
* ("a".."z").cover?("5") #=> false
* ("a".."z").cover?("cc") #=> true
*/
static mrb_value
mrb_range_cover(mrb_state *mrb, mrb_value range)
{
mrb_value val;
struct RRange *r = mrb_range_ptr(mrb, range);
mrb_value beg, end;
mrb_get_args(mrb, "o", &val);
beg = r->edges->beg;
end = r->edges->end;
if (r_le(mrb, beg, val)) {
if (r->excl) {
if (r_lt(mrb, val, end))
return mrb_true_value();
}
else {
if (r_le(mrb, val, end))
return mrb_true_value();
}
}
return mrb_false_value();
}
mrb_int
mrb_range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len, mrb_int err)
{
mrb_int beg, end, b, e;
struct RRange *r = mrb_range_ptr(range);
if (mrb_type(range) != MRB_TT_RANGE) return FALSE;
beg = b = mrb_fixnum(r->edges->beg);
end = e = mrb_fixnum(r->edges->end);
if (beg < 0) {
beg += len;
if (beg < 0) goto out_of_range;
}
if (err == 0 || err == 2) {
if (beg > len) goto out_of_range;
if (end > len) end = len;
}
if (end < 0) end += len;
if (!r->excl) end++; /* include end point */
len = end - beg;
if (len < 0) len = 0;
*begp = beg;
*lenp = len;
return TRUE;
out_of_range:
if (err) {
mrb_raise(mrb, E_RANGE_ERROR, "%ld..%s%ld out of range",
b, r->excl? "." : "", e);
}
return OTHER;
}
mrb_value
mrb_range_end(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
return r->edges->end;
}
mrb_int
mrb_range_beg_len(mrb_state *mrb, mrb_value range, mrb_int *begp, mrb_int *lenp, mrb_int len)
{
mrb_int beg, end, b, e;
struct RRange *r = mrb_range_ptr(range);
if (mrb_type(range) != MRB_TT_RANGE) {
mrb_raise(mrb, E_TYPE_ERROR, "expected Range.");
}
beg = b = mrb_fixnum(r->edges->beg);
end = e = mrb_fixnum(r->edges->end);
if (beg < 0) {
beg += len;
if (beg < 0) return FALSE;
}
if (beg > len) return FALSE;
if (end > len) end = len;
if (end < 0) end += len;
if (!r->excl && end < len) end++; /* include end point */
len = end - beg;
if (len < 0) len = 0;
*begp = beg;
*lenp = len;
return TRUE;
}
/*
* call-seq:
* range.exclude_end? => true or false
*
* Returns <code>true</code> if <i>range</i> excludes its end value.
*/
mrb_value
mrb_range_excl(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(range);
return r->excl ? mrb_true_value() : mrb_false_value();
}
static void
range_init(mrb_state *mrb, mrb_value range, mrb_value beg, mrb_value end, mrb_int exclude_end)
{
struct RRange *r = mrb_range_ptr(range);
range_check(mrb, beg, end);
r->excl = exclude_end;
r->edges->beg = beg;
r->edges->end = end;
}
static mrb_value
mrb_range_size(mrb_state *mrb, mrb_value range)
{
struct RRange *r = mrb_range_ptr(mrb, range);
mrb_value beg, end;
mrb_float beg_f, end_f;
mrb_bool num_p = TRUE;
mrb_bool excl;
beg = r->edges->beg;
end = r->edges->end;
excl = r->excl;
if (mrb_fixnum_p(beg)) {
beg_f = (mrb_float)mrb_fixnum(beg);
}
else if (mrb_float_p(beg)) {
beg_f = mrb_float(beg);
}
else {
num_p = FALSE;
}
if (mrb_fixnum_p(end)) {
end_f = (mrb_float)mrb_fixnum(end);
}
else if (mrb_float_p(end)) {
end_f = mrb_float(end);
}
else {
num_p = FALSE;
}
if (num_p) {
mrb_float n = end_f - beg_f;
mrb_float err = (fabs(beg_f) + fabs(end_f) + fabs(end_f-beg_f)) * MRB_FLOAT_EPSILON;
if (err>0.5) err=0.5;
if (excl) {
if (n<=0) return mrb_fixnum_value(0);
if (n<1)
n = 0;
else
n = floor(n - err);
}
else {
if (n<0) return mrb_fixnum_value(0);
n = floor(n + err);
}
if (isinf(n+1))
return mrb_float_value(mrb, INFINITY);
return mrb_fixnum_value(n+1);
}
return mrb_nil_value();
}
static void
range_init(mrb_state *mrb, mrb_value range, mrb_value beg, mrb_value end, mrb_bool exclude_end)
{
struct RRange *r = mrb_range_ptr(range);
range_check(mrb, beg, end);
r->excl = exclude_end;
if (!r->edges) {
r->edges = (mrb_range_edges *)mrb_malloc(mrb, sizeof(mrb_range_edges));
}
r->edges->beg = beg;
r->edges->end = end;
}
mrb_value
mrb_range_eq(mrb_state *mrb, mrb_value range)
{
struct RRange *rr;
struct RRange *ro;
mrb_value obj;
mrb_get_args(mrb, "o", &obj);
if (mrb_obj_equal(mrb, range, obj)) return mrb_true_value();
if (!mrb_obj_is_instance_of(mrb, obj, mrb_obj_class(mrb, range))) { /* same class? */
return mrb_false_value();
}
rr = mrb_range_ptr(range);
ro = mrb_range_ptr(obj);
if (!mrb_bool(mrb_funcall(mrb, rr->edges->beg, "==", 1, ro->edges->beg)) ||
!mrb_bool(mrb_funcall(mrb, rr->edges->end, "==", 1, ro->edges->end)) ||
rr->excl != ro->excl) {
return mrb_false_value();
}
return mrb_true_value();
}
/*
* call-seq:
* rng.last -> obj
* rng.last(n) -> an_array
*
* Returns the last object in the range,
* or an array of the last +n+ elements.
*
* Note that with no arguments +last+ will return the object that defines
* the end of the range even if #exclude_end? is +true+.
*
* (10..20).last #=> 20
* (10...20).last #=> 20
* (10..20).last(3) #=> [18, 19, 20]
* (10...20).last(3) #=> [17, 18, 19]
*/
static mrb_value
mrb_range_last(mrb_state *mrb, mrb_value range)
{
mrb_value num;
mrb_value array;
struct RRange *r = mrb_range_ptr(mrb, range);
if (mrb_get_args(mrb, "|o", &num) == 0) {
return r->edges->end;
}
array = mrb_funcall(mrb, range, "to_a", 0);
return mrb_funcall(mrb, array, "last", 1, mrb_to_int(mrb, num));
}
static mrb_value
range_eql(mrb_state *mrb, mrb_value range)
{
mrb_value obj;
struct RRange *r, *o;
mrb_get_args(mrb, "o", &obj);
if (mrb_obj_equal(mrb, range, obj)) return mrb_true_value();
if (!mrb_obj_is_kind_of(mrb, obj, RANGE_CLASS)) {
return mrb_false_value();
}
if (mrb_type(obj) != MRB_TT_RANGE) return mrb_false_value();
r = mrb_range_ptr(range);
o = mrb_range_ptr(obj);
if (!mrb_eql(mrb, r->edges->beg, o->edges->beg) ||
!mrb_eql(mrb, r->edges->end, o->edges->end) ||
(r->excl != o->excl)) {
return mrb_false_value();
}
return mrb_true_value();
}
static mrb_value
range_to_s(mrb_state *mrb, mrb_value range)
{
mrb_value str, str2;
struct RRange *r = mrb_range_ptr(range);
str = mrb_obj_as_string(mrb, r->edges->beg);
str2 = mrb_obj_as_string(mrb, r->edges->end);
str = mrb_str_dup(mrb, str);
mrb_str_cat(mrb, str, "...", r->excl ? 3 : 2);
mrb_str_append(mrb, str, str2);
return str;
}
static mrb_value
inspect_range(mrb_state *mrb, mrb_value range, mrb_value dummy, int recur)
{
mrb_value str, str2;
struct RRange *r = mrb_range_ptr(range);
if (recur) {
return mrb_str_new2(mrb, r->excl ? "(... ... ...)" : "(... .. ...)");
}
str = mrb_inspect(mrb, r->edges->beg);
str2 = mrb_inspect(mrb, r->edges->end);
str = mrb_str_dup(mrb, str);
mrb_str_cat(mrb, str, "...", r->excl ? 3 : 2);
mrb_str_append(mrb, str, str2);
return str;
}
/*
* call-seq:
* range === obj => true or false
* range.member?(val) => true or false
* range.include?(val) => true or false
*
*/
mrb_value
mrb_range_include(mrb_state *mrb, mrb_value range)
{
mrb_value val;
struct RRange *r = mrb_range_ptr(range);
mrb_value beg, end;
mrb_bool include_p;
mrb_get_args(mrb, "o", &val);
beg = r->edges->beg;
end = r->edges->end;
include_p = r_le(mrb, beg, val) && /* beg <= val */
((r->excl && r_gt(mrb, end, val)) || /* end > val */
(r_ge(mrb, end, val))); /* end >= val */
return mrb_bool_value(include_p);
}
/* 15.2.14.4.15(x) */
static mrb_value
range_initialize_copy(mrb_state *mrb, mrb_value copy)
{
mrb_value src;
struct RRange *r;
mrb_get_args(mrb, "o", &src);
if (mrb_obj_equal(mrb, copy, src)) return copy;
if (!mrb_obj_is_instance_of(mrb, src, mrb_obj_class(mrb, copy))) {
mrb_raise(mrb, E_TYPE_ERROR, "wrong argument class");
}
r = mrb_range_ptr(src);
range_init(mrb, copy, r->edges->beg, r->edges->end, r->excl);
return copy;
}
static void
range_init(mrb_state *mrb, mrb_value range, mrb_value beg, mrb_value end, mrb_int exclude_end)
{
mrb_value args[2];
struct RRange *r = mrb_range_ptr(range);
if ((mrb_type(beg) != MRB_TT_FIXNUM) || (mrb_type(end) != MRB_TT_FIXNUM)) {
args[0] = beg;
args[1] = end;
/* eroor.c v = mrb_rescue(range_check, (mrb_value)args, range_failed, 0);
if (mrb_nil_p(v)) range_failed(); */
if (!range_check(mrb, args)) {
printf("range_failed()\n");
}
}
r->excl = exclude_end;
r->edges->beg = beg;
r->edges->end = end;
}
static mrb_value
inspect_range(mrb_state *mrb, mrb_value range, mrb_value dummy, int recur)
{
mrb_value str, str2;
struct RRange *r = mrb_range_ptr(range);
if (recur) {
static const char s[2][14] = { "(... ... ...)", "(... .. ...)" };
static const int n[] = { 13, 12 };
int idx;
idx = (r->excl) ? 0 : 1;
return mrb_str_new(mrb, s[idx], n[idx]);
}
str = mrb_inspect(mrb, r->edges->beg);
str2 = mrb_inspect(mrb, r->edges->end);
str = mrb_str_dup(mrb, str);
mrb_str_cat(mrb, str, "...", r->excl ? 3 : 2);
mrb_str_append(mrb, str, str2);
return str;
}
/*
* call-seq:
* range === obj => true or false
* range.member?(val) => true or false
* range.include?(val) => true or false
*
*/
mrb_value
mrb_range_include(mrb_state *mrb, mrb_value range)
{
mrb_value val;
struct RRange *r = mrb_range_ptr(range);
mrb_value beg, end;
mrb_get_args(mrb, "o", &val);
beg = r->edges->beg;
end = r->edges->end;
if (r_le(mrb, beg, val)) {
/* beg <= val */
if (r->excl) {
if (r_gt(mrb, end, val)) return mrb_true_value(); /* end > val */
}
else {
if (r_ge(mrb, end, val)) return mrb_true_value(); /* end >= val */
}
}
return mrb_false_value();
}
static mrb_bool
is_safe_migratable_simple_value(mrb_state *mrb, mrb_value v, mrb_state *mrb2)
{
switch (mrb_type(v)) {
case MRB_TT_OBJECT:
case MRB_TT_EXCEPTION:
{
struct RObject *o = mrb_obj_ptr(v);
mrb_value path = mrb_class_path(mrb, o->c);
if (mrb_nil_p(path) || !mrb_class_defined(mrb2, RSTRING_PTR(path))) {
return FALSE;
}
}
break;
case MRB_TT_FALSE:
case MRB_TT_TRUE:
case MRB_TT_FIXNUM:
case MRB_TT_SYMBOL:
case MRB_TT_FLOAT:
case MRB_TT_STRING:
break;
case MRB_TT_RANGE:
{
struct RRange *r = mrb_range_ptr(v);
if (!is_safe_migratable_simple_value(mrb, r->edges->beg, mrb2) ||
!is_safe_migratable_simple_value(mrb, r->edges->end, mrb2)) {
return FALSE;
}
}
break;
case MRB_TT_ARRAY:
{
struct RArray *a0;
int i;
a0 = mrb_ary_ptr(v);
for (i=0; i<a0->len; i++) {
if (!is_safe_migratable_simple_value(mrb, a0->ptr[i], mrb2)) {
return FALSE;
}
}
}
break;
case MRB_TT_HASH:
{
mrb_value ka;
int i, l;
ka = mrb_hash_keys(mrb, v);
l = RARRAY_LEN(ka);
for (i = 0; i < l; i++) {
mrb_value k = mrb_ary_entry(ka, i);
if (!is_safe_migratable_simple_value(mrb, k, mrb2) ||
!is_safe_migratable_simple_value(mrb, mrb_hash_get(mrb, v, k), mrb2)) {
return FALSE;
}
}
}
break;
case MRB_TT_DATA:
if (!is_safe_migratable_datatype(DATA_TYPE(v)))
return FALSE;
break;
default:
return FALSE;
break;
}
return TRUE;
}
// based on https://gist.github.com/3066997
static mrb_value
migrate_simple_value(mrb_state *mrb, mrb_value v, mrb_state *mrb2) {
mrb_value nv;
switch (mrb_type(v)) {
case MRB_TT_OBJECT:
case MRB_TT_EXCEPTION:
{
struct RObject *o = mrb_obj_ptr(v);
mrb_value path = mrb_class_path(mrb, o->c);
struct RClass *c;
if (mrb_nil_p(path)) {
mrb_raise(mrb, E_TYPE_ERROR, "cannot migrate class");
}
c = mrb_class_get(mrb2, RSTRING_PTR(path));
nv = mrb_obj_value(mrb_obj_alloc(mrb2, mrb_type(v), c));
}
migrate_simple_iv(mrb, v, mrb2, nv);
break;
case MRB_TT_FALSE:
case MRB_TT_TRUE:
case MRB_TT_FIXNUM:
nv = v;
break;
case MRB_TT_SYMBOL:
nv = mrb_symbol_value(migrate_sym(mrb, mrb_symbol(v), mrb2));
break;
case MRB_TT_FLOAT:
nv = mrb_float_value(mrb2, mrb_float(v));
break;
case MRB_TT_STRING:
nv = mrb_str_new(mrb2, RSTRING_PTR(v), RSTRING_LEN(v));
break;
case MRB_TT_RANGE:
{
struct RRange *r = mrb_range_ptr(v);
nv = mrb_range_new(mrb2,
migrate_simple_value(mrb, r->edges->beg, mrb2),
migrate_simple_value(mrb, r->edges->end, mrb2),
r->excl);
}
break;
case MRB_TT_ARRAY:
{
struct RArray *a0, *a1;
int i;
a0 = mrb_ary_ptr(v);
nv = mrb_ary_new_capa(mrb2, a0->len);
a1 = mrb_ary_ptr(nv);
for (i=0; i<a0->len; i++) {
int ai = mrb_gc_arena_save(mrb2);
a1->ptr[i] = migrate_simple_value(mrb, a0->ptr[i], mrb2);
a1->len++;
mrb_gc_arena_restore(mrb2, ai);
}
}
break;
case MRB_TT_HASH:
{
mrb_value ka;
int i, l;
nv = mrb_hash_new(mrb2);
ka = mrb_hash_keys(mrb, v);
l = RARRAY_LEN(ka);
for (i = 0; i < l; i++) {
int ai = mrb_gc_arena_save(mrb2);
mrb_value k = migrate_simple_value(mrb, mrb_ary_entry(ka, i), mrb2);
mrb_value o = migrate_simple_value(mrb, mrb_hash_get(mrb, v, k), mrb2);
mrb_hash_set(mrb2, nv, k, o);
mrb_gc_arena_restore(mrb2, ai);
}
}
migrate_simple_iv(mrb, v, mrb2, nv);
break;
case MRB_TT_DATA:
if (!is_safe_migratable_datatype(DATA_TYPE(v)))
mrb_raise(mrb, E_TYPE_ERROR, "cannot migrate object");
nv = v;
DATA_PTR(nv) = DATA_PTR(v);
DATA_TYPE(nv) = DATA_TYPE(v);
migrate_simple_iv(mrb, v, mrb2, nv);
break;
default:
mrb_raise(mrb, E_TYPE_ERROR, "cannot migrate object");
break;
}
return nv;
}
