Documentation

A match rule is a set of filters; most filters may have one possible value assigned, such as a single message type. The exception are parameter filters, which are limited in number only by the server implementation.

Constructors

MatchRule
Fields matchType :: Maybe MessageType matchSender :: Maybe BusName matchInterface :: Maybe InterfaceName matchMember :: Maybe MemberName matchPath :: Maybe ObjectPath matchDestination :: Maybe BusName matchParameters :: [ParameterValue]

Instances

Show MatchRule

data MessageType Source

The set of allowed message types to filter on is separate from the set supported for sending over the wire. This allows the server to support additional types not yet implemented in the library, or vice-versa.

Constructors

MethodCall
MethodReturn
Signal
Error

Instances

Eq MessageType
Show MessageType

data ParameterValue Source

Parameters may match against two types, strings and object paths. It's probably an error to have two values for the same parameter.

The constructor StringValue 3 "hello" means that the fourth parameter in the message body must be the string "hello". PathValue is the same, but its value must be an object path.

Constructors

StringValue Word8 Text
PathValue Word8 ObjectPath

Instances

Eq ParameterValue
Show ParameterValue

formatRule :: MatchRule -> Text Source

Format a MatchRule as the bus expects to receive in a call to AddMatch.

addMatch :: MatchRule -> MethodCall Source

Build a MethodCall for adding a match rule to the bus.

matchAll :: MatchRule Source

An empty match rule, which matches everything.

matches :: MatchRule -> ReceivedMessage -> Bool Source

Whether a ReceivedMessage matches a given rule. This is useful for implementing signal handlers.