`ppElements' is only used by Network.Xmpp.Xep.InbandRegistration, so I
moved it there for the time-being.
As `elements' is only used in Stream.hs, I moved it there.
`parseElement' is not used anywhere, and was removed completely.
`renderElement' (and its local `elementToEvents' function) is used by
Stream.hs and Concurrent.hs, so I moved it to Utilties.hs. (We could
argue for a separate `Elements' module, but right now that seems
a bit thin. `openElementToEvents' is used by both `elementToEvents'
and `renderOpenElement', so I put both `openElementToEvents' and
`renderOpenElement' in Utilities.hs as well.
`compressNodes' and `streamName' were made where-local to `elements'.
The types were moved to Types.hs.
The `Stream' and the `Connection' modules/concepts has been quite
similar and, in some ways, overlapping. The `Stream' and `Connection'
modules allow for direct access to the XML stream. The `Stream' module
exported an API for opening, restarting, and closing the stream. The
`Connection' module, on the other hand, allowed for pushing and
pulling elements and stanzas to and from the stream. Furthermore, the
`Connection' type was used in both the `Connection' module and the
higher-level `Stream' module.
This patch joins the two modules into one `Stream' module, and renames
the `Connection' type to `Stream'. It also renames most other
connection-related functions and types. Also, `connect' is renamed
`openStream' and `closeStreams' is renamed `closeStream' (the stream
is `bidirectional' in RFC 6120 terminology).
We can treat all functions related to SASL negotiation as a submodule
to Pontarius XMPP if there are no dependencies from the internal
Network.Xmpp modules to the SASL functionality. Because of this,
`auth' and `authSimple' were moved from Session.hs to Sasl.hs. As the
bind and the `{urn:ietf:params:xml:ns:xmpp-session}session'
functionality are related only to the SASL negotation functionality,
these functions has been moved to the SASL submodule as well.
As these changes only leaves `connect' in the Session module, it seems
fitting to move `connect' to Network.Xmpp.Stream (not
Network.Xmpp.Connection, as `connect' depends on `startStream').
The internal Network.Xmpp modules (Connection.hs) no longer depend on
the Concurrent submodule. This will decrease the coupling between
Network.Xmpp and the concurrent implementation, making it easier for
developers to replace the concurrent implementation if they wanted to.
As Network.Xmpp.Connection is really a module that breaks the
encapsulation that is Network.Xmpp and the concurrent interface, I
have renamed it Network.Xmpp.Internal. As this frees up the
Network.Xmpp.Connection name, Network.Xmpp.Connection_ can reclaim it.
The high-level "utility" functions of Network.Xmpp.Utilities,
Network.Xmpp.Presence, and Network.Xmpp.Message has been moved to
Network.Xmpp.Utilities. This module contains functions that at most
only depend on the internal Network.Xmpp.Types module, and doesn't
belong in any other module.
The functionality of Jid.hs was moved to Types.hs.
Moved some of the functions of Network.Xmpp.Pickle to
Network.Xmpp.Marshal, and removed the Network.Xmpp.Pickle module.
A module imports diagram corresponding to the one of my last patch
shows the new module structure. I also include a diagram showing
the `Sasl' and `Concurrent' module imports.
As mentioned in #pontarius, `Context' is simply a bunch of thread
management features, and users that want that can build their own on
top of the `Connection' layer. The benefit of hiding `Context' is that
it makes the API clearer, and significantly decreases the complexity
of the library.
As the `Basic' module is simply an interface to `Connection', it was
renamed to `Connection'. The old `Connection' module was moved to
`Connection_'.
Exported the types of the fields of `Connection' (such as
`ConnectionState' and `ConnectionHandle' (previously `HandleLike').
Drops the Connection newtype, and shows TMVar Connection instead.
Hides Connection from Network.Xmpp, as the vast majority of users will
not need to work with Connection directly. The related functions are
now instead available from Network.Xmpp.Basic.
Renames `simpleConnect' to `session', and makes it flexible in terms
of authentication and whether or not to use TLS.
Adds some minor documentation changes.
We will need to export some session related information (such as the
acquired resource, stream properties, etc.). We will also need to
expose any failures encountered, probably by making `session' an
ErrorT calculation.
Also removed the Errors module from the Cabal file.
Philipp Balzarek
Jon Kristensen