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author | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-11-06 17:13:19 +0000 |
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committer | marcandre <marcandre@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2012-11-06 17:13:19 +0000 |
commit | cef054d5b2d29422b2160783aea6d0581c701483 (patch) | |
tree | 12a0e7ebc3a2ea1196bfa6b0c7d3a38e69f4875d /enum.c | |
parent | fe9386cdcbfce8c631a333add2b2cab8366ee6dc (diff) | |
download | ruby-cef054d5b2d29422b2160783aea6d0581c701483.tar.gz |
* enum.c (enum_cycle): Support for Enumerable#cycle.size
[Feature #6636]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@37510 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'enum.c')
-rw-r--r-- | enum.c | 20 |
1 files changed, 19 insertions, 1 deletions
@@ -2235,6 +2235,24 @@ cycle_i(VALUE i, VALUE ary, int argc, VALUE *argv) return Qnil; } +static VALUE +enum_cycle_size(VALUE self, VALUE args) +{ + long mul; + VALUE n = Qnil; + VALUE size = enum_size(self, args); + + if (size == Qnil) return Qnil; + + if (args && (RARRAY_LEN(args) > 0)) { + n = RARRAY_PTR(args)[0]; + } + if (n == Qnil) return DBL2NUM(INFINITY); + mul = NUM2LONG(n); + if (mul <= 0) return INT2FIX(0); + return rb_funcall(size, '*', 1, LONG2FIX(mul)); +} + /* * call-seq: * enum.cycle(n=nil) { |obj| block } -> nil @@ -2265,7 +2283,7 @@ enum_cycle(int argc, VALUE *argv, VALUE obj) rb_scan_args(argc, argv, "01", &nv); - RETURN_ENUMERATOR(obj, argc, argv); + RETURN_SIZED_ENUMERATOR(obj, argc, argv, enum_cycle_size); if (NIL_P(nv)) { n = -1; } |