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range.c: Range#size now returns Float::INFINITY if it is endless

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Fixes [Bug #14699]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63715 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
mame 2018-06-22 02:58:39 +00:00
parent c19ecf05b4
commit 342619300c
2 changed files with 10 additions and 4 deletions
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8
range.c
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@ -749,9 +749,15 @@ static VALUE
range_size(VALUE range) range_size(VALUE range)
{ {
VALUE b = RANGE_BEG(range), e = RANGE_END(range); VALUE b = RANGE_BEG(range), e = RANGE_END(range);
if (rb_obj_is_kind_of(b, rb_cNumeric) && rb_obj_is_kind_of(e, rb_cNumeric)) { if (rb_obj_is_kind_of(b, rb_cNumeric)) {
if (rb_obj_is_kind_of(e, rb_cNumeric)) {
return ruby_num_interval_step_size(b, e, INT2FIX(1), EXCL(range)); return ruby_num_interval_step_size(b, e, INT2FIX(1), EXCL(range));
} }
if (NIL_P(e)) {
return DBL2NUM(HUGE_VAL);
}
}
return Qnil; return Qnil;
} }

4
test/ruby/test_range.rb
View file

@ -582,8 +582,8 @@ class TestRange < Test::Unit::TestCase
assert_equal 42, (1..42).each.size assert_equal 42, (1..42).each.size
assert_nil ("a"..."z").size assert_nil ("a"..."z").size
assert_nil (1...).size assert_equal Float::INFINITY, (1...).size
assert_nil (1.0...).size assert_equal Float::INFINITY, (1.0...).size
assert_nil ("a"...).size assert_nil ("a"...).size
end end