IO::Buffer#values

static VALUE
io_buffer_values(int argc, VALUE *argv, VALUE self)
{
    const void *base;
    size_t size;

    rb_io_buffer_get_bytes_for_reading(self, &base, &size);

    ID buffer_type;
    if (argc >= 1) {
        buffer_type = RB_SYM2ID(argv[0]);
    }
    else {
        buffer_type = RB_IO_BUFFER_DATA_TYPE_U8;
    }

    size_t offset, count;
    io_buffer_extract_offset_count(buffer_type, size, argc-1, argv+1, &offset, &count);

    VALUE array = rb_ary_new_capa(count);

    for (size_t i = 0; i < count; i++) {
        VALUE value = rb_io_buffer_get_value(base, size, buffer_type, &offset);
        rb_ary_push(array, value);
    }

    return array;
}