range.c: Range#last and #max raises a RangeError if it is endless
Also, Range#min raises an error if it is endless and a comparison method is specified. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63716 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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10
range.c
10
range.c
@ -1013,6 +1013,9 @@ range_first(int argc, VALUE *argv, VALUE range)
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static VALUE
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range_last(int argc, VALUE *argv, VALUE range)
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{
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if (NIL_P(RANGE_END(range))) {
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rb_raise(rb_eRangeError, "cannot get the last element of endless range");
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}
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if (argc == 0) return RANGE_END(range);
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return rb_ary_last(argc, argv, rb_Array(range));
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}
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@ -1040,6 +1043,9 @@ static VALUE
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range_min(int argc, VALUE *argv, VALUE range)
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{
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if (rb_block_given_p()) {
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if (NIL_P(RANGE_END(range))) {
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rb_raise(rb_eRangeError, "cannot get the minimum of endless range with custom comparison method");
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}
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return rb_call_super(argc, argv);
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}
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else if (argc != 0) {
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@ -1080,7 +1086,9 @@ range_max(int argc, VALUE *argv, VALUE range)
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VALUE e = RANGE_END(range);
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int nm = FIXNUM_P(e) || rb_obj_is_kind_of(e, rb_cNumeric);
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if (NIL_P(e)) return Qnil;
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if (NIL_P(RANGE_END(range))) {
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rb_raise(rb_eRangeError, "cannot get the maximum of endless range");
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}
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if (rb_block_given_p() || (EXCL(range) && !nm) || argc) {
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return rb_call_super(argc, argv);
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@ -99,8 +99,8 @@ class TestRange < Test::Unit::TestCase
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assert_equal(2, (1..2).max)
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assert_equal(nil, (2..1).max)
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assert_equal(1, (1...2).max)
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assert_equal(nil, (1..).max)
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assert_equal(nil, (1...).max)
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assert_raise(RangeError) { (1..).max }
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assert_raise(RangeError) { (1...).max }
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assert_equal(2.0, (1.0..2.0).max)
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assert_equal(nil, (2.0..1.0).max)
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@ -115,7 +115,8 @@ class TestRange < Test::Unit::TestCase
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assert_equal([10,9,8], (0..10).max(3))
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assert_equal([9,8,7], (0...10).max(3))
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# XXX: How should (0...).max(3) behave?
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assert_raise(RangeError) { (1..).max(3) }
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assert_raise(RangeError) { (1...).max(3) }
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end
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def test_initialize_twice
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@ -405,7 +406,8 @@ class TestRange < Test::Unit::TestCase
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assert_equal([0, 1, 2], (0..nil).first(3))
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assert_equal(0, (0..nil).first)
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assert_equal("a", ("a"..nil).first)
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# XXX: How should (0...).last(3) behave?
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assert_raise(RangeError) { (0..nil).last }
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assert_raise(RangeError) { (0..nil).last(3) }
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end
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def test_to_s
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