Use the new disposition API in python

WIP: Split functionality into local and remote disposition as each
have different purposes and access to attributes.

Add python tests

Allow assigning remote dispositions to local delivery

python/cproton.h

@@ -406,14 +406,19 @@ void pn_disposition_set_section_offset(pn_disposition_t *disposition, uint64_t s
 void pn_disposition_set_undeliverable(pn_disposition_t *disposition, _Bool undeliverable);
 uint64_t pn_disposition_type(pn_disposition_t *disposition);
 
+typedef struct pn_custom_disposition_t pn_custom_disposition_t;
 typedef struct pn_received_disposition_t pn_received_disposition_t;
 typedef struct pn_rejected_disposition_t pn_rejected_disposition_t;
 typedef struct pn_modified_disposition_t pn_modified_disposition_t;
 
+pn_custom_disposition_t *pn_custom_disposition(pn_disposition_t *disposition);
 pn_received_disposition_t *pn_received_disposition(pn_disposition_t *disposition);
 pn_rejected_disposition_t *pn_rejected_disposition(pn_disposition_t *disposition);
 pn_modified_disposition_t *pn_modified_disposition(pn_disposition_t *disposition);
 
+void pn_custom_disposition_set_type(pn_custom_disposition_t *disposition, uint64_t type);
+uint64_t pn_custom_disposition_get_type(pn_custom_disposition_t *disposition);
+pn_data_t *pn_custom_disposition_data(pn_custom_disposition_t *disposition);
 pn_condition_t *pn_rejected_disposition_condition(pn_rejected_disposition_t *disposition);
 uint32_t pn_received_disposition_get_section_number(pn_received_disposition_t *disposition);
 void pn_received_disposition_set_section_number(pn_received_disposition_t *disposition, uint32_t section_number);

python/proton/__init__.py

@@ -36,7 +36,8 @@
 from ._condition import Condition
 from ._data import UNDESCRIBED, Array, Data, Described, char, symbol, timestamp, ubyte, ushort, uint, ulong, \
     byte, short, int32, float32, decimal32, decimal64, decimal128, AnnotationDict, PropertyDict, SymbolList
-from ._delivery import Delivery, Disposition, DispositionType
+from ._delivery import Delivery, Disposition, DispositionType, GeneralDisposition, RejectedDisposition, \
+    ModifiedDisposition, ReceivedDisposition
 from ._endpoints import Endpoint, Connection, Session, Link, Receiver, Sender, Terminus
 from ._events import Collector, Event, EventType
 from ._exceptions import ProtonException, MessageException, DataException, TransportException, \
@@ -47,8 +48,6 @@
 from ._url import Url
 
 __all__ = [
-    "API_LANGUAGE",
-    "IMPLEMENTATION_LANGUAGE",
     "UNDESCRIBED",
     "AnnotationDict",
     "Array",
@@ -65,16 +64,18 @@
     "Endpoint",
     "Event",
     "EventType",
+    "GeneralDisposition",
     "Handler",
     "Link",
     "LinkException",
     "Message",
     "MessageException",
+    "ModifiedDisposition",
     "PropertyDict",
     "ProtonException",
-    "VERSION_MAJOR",
-    "VERSION_MINOR",
     "Receiver",
+    "ReceivedDisposition",
+    "RejectedDisposition",
     "SASL",
     "Sender",
     "Session",
@@ -111,9 +112,6 @@
 VERSION_MINOR = PN_VERSION_MINOR
 VERSION_POINT = PN_VERSION_POINT
 VERSION = (VERSION_MAJOR, VERSION_MINOR, VERSION_POINT)
-API_LANGUAGE = "C"
-IMPLEMENTATION_LANGUAGE = "C"
-
 
 handler = logging.NullHandler()