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fix #2036: use rb_hash_* to accumulate hashes

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Instead of shifting/xoring the hash at each field, use the built-in ruby
apis for generating a hash from multiple input values.

Now returns a Fixnum.
This commit is contained in:
Brendan Ribera 2016-08-30 16:22:49 -07:00
parent 047419a172
commit de028631fc
1 changed files with 5 additions and 7 deletions
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12
ruby/ext/google/protobuf_c/repeated_field.c
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@ -447,9 +447,8 @@ VALUE RepeatedField_eq(VALUE _self, VALUE _other) {
*/
VALUE RepeatedField_hash(VALUE _self) {
RepeatedField* self = ruby_to_RepeatedField(_self);
VALUE hash = LL2NUM(0);
st_index_t h = rb_hash_start(0);
VALUE hash_sym = rb_intern("hash");
upb_fieldtype_t field_type = self->field_type;
VALUE field_type_class = self->field_type_class;
size_t elem_size = native_slot_size(field_type);
@ -457,12 +456,11 @@ VALUE RepeatedField_hash(VALUE _self) {
for (int i = 0; i < self->size; i++, off += elem_size) {
void* mem = ((uint8_t *)self->elements) + off;
VALUE elem = native_slot_get(field_type, field_type_class, mem);
hash = rb_funcall(hash, rb_intern("<<"), 1, INT2NUM(2));
hash = rb_funcall(hash, rb_intern("^"), 1,
rb_funcall(elem, rb_intern("hash"), 0));
h = rb_hash_uint(h, NUM2LONG(rb_funcall(elem, hash_sym, 0)));
}
h = rb_hash_end(h);
return hash;
return INT2FIX(h);
}
/*