diff options
Diffstat (limited to 'range.c')
-rw-r--r-- | range.c | 29 |
1 files changed, 19 insertions, 10 deletions
@@ -201,21 +201,15 @@ range_eql(VALUE range, VALUE obj) return Qtrue; } -/* - * call-seq: - * rng.hash => fixnum - * - * Generate a hash value such that two ranges with the same start and - * end points, and the same value for the "exclude end" flag, generate - * the same hash value. - */ - static VALUE -range_hash(VALUE range) +recursive_hash(VALUE range, VALUE dummy, int recur) { unsigned long hash = EXCL(range); VALUE v; + if (recur) { + rb_raise(rb_eArgError, "recursive key for hash"); + } hash = rb_hash_start(hash); v = rb_hash(RANGE_BEG(range)); hash = rb_hash_uint(hash, NUM2LONG(v)); @@ -227,6 +221,21 @@ range_hash(VALUE range) return LONG2FIX(hash); } +/* + * call-seq: + * rng.hash => fixnum + * + * Generate a hash value such that two ranges with the same start and + * end points, and the same value for the "exclude end" flag, generate + * the same hash value. + */ + +static VALUE +range_hash(VALUE range) +{ + return rb_exec_recursive(recursive_hash, range, 0); +} + static void range_each_func(VALUE range, VALUE (*func) (VALUE, void *), void *arg) { |