def serialize_key_value(k, v, check_keys)
k = k.to_s
if check_keys
if k[0] == ?$
raise InvalidKeyName.new("key #{k} must not start with '$'")
end
if k.include? ?.
raise InvalidKeyName.new("key #{k} must not contain '.'")
end
end
type = bson_type(v)
case type
when STRING, SYMBOL
serialize_string_element(@buf, k, v, type)
when NUMBER, NUMBER_INT
serialize_number_element(@buf, k, v, type)
when OBJECT
serialize_object_element(@buf, k, v, check_keys)
when OID
serialize_oid_element(@buf, k, v)
when ARRAY
serialize_array_element(@buf, k, v, check_keys)
when REGEX
serialize_regex_element(@buf, k, v)
when BOOLEAN
serialize_boolean_element(@buf, k, v)
when DATE
serialize_date_element(@buf, k, v)
when NULL
serialize_null_element(@buf, k)
when REF
serialize_dbref_element(@buf, k, v)
when BINARY
serialize_binary_element(@buf, k, v)
when UNDEFINED
serialize_null_element(@buf, k)
when CODE_W_SCOPE
serialize_code_w_scope(@buf, k, v)
when MAXKEY
serialize_max_key_element(@buf, k)
when MINKEY
serialize_min_key_element(@buf, k)
when TIMESTAMP
serialize_timestamp_element(@buf, k, v)
else
raise "unhandled type #{type}"
end
end