"""
from .. base.Port import Port as _Port
+from .. gui.Port import Port as _GUIPort
import Constants
-class Port(_Port):
-
- ##possible port types
- TYPES = ['complex', 'float', 'int', 'short', 'byte']
-
- def __init__(self, block, n):
+def _get_source_from_virtual_sink_port(vsp):
+ """
+ Resolve the source port that is connected to the given virtual sink port.
+ Use the get source from virtual source to recursively resolve subsequent ports.
+ """
+ try: return _get_source_from_virtual_source_port(
+ vsp.get_enabled_connections()[0].get_source())
+ except: raise Exception, 'Could not resolve source for virtual sink port %s'%vsp
+
+def _get_source_from_virtual_source_port(vsp, traversed=[]):
+ """
+ Recursively resolve source ports over the virtual connections.
+ Keep track of traversed sources to avoid recursive loops.
+ """
+ if not vsp.get_parent().is_virtual_source(): return vsp
+ if vsp in traversed: raise Exception, 'Loop found when resolving virtual source %s'%vsp
+ try: return _get_source_from_virtual_source_port(
+ _get_source_from_virtual_sink_port(
+ filter(#get all virtual sinks with a matching stream id
+ lambda vs: vs.get_param('stream_id').get_value() == vsp.get_parent().get_param('stream_id').get_value(),
+ filter(#get all enabled blocks that are also virtual sinks
+ lambda b: b.is_virtual_sink(),
+ vsp.get_parent().get_parent().get_enabled_blocks(),
+ ),
+ )[0].get_sinks()[0]
+ ), traversed + [vsp],
+ )
+ except: raise Exception, 'Could not resolve source for virtual source port %s'%vsp
+
+class Port(_Port, _GUIPort):
+
+ def __init__(self, block, n, dir):
"""
Make a new port from nested data.
@param block the parent element
@param n the nested odict
- @return a new port
+ @param dir the direction
"""
- vlen = n.find('vlen') or '1'
- nports = n.find('nports') or ''
- optional = n.find('optional') or ''
+ self._n = n
+ if n['type'] == 'msg': n['key'] = 'msg'
+ if dir == 'source' and not n.find('key'):
+ n['key'] = str(block._source_count)
+ block._source_count += 1
+ if dir == 'sink' and not n.find('key'):
+ n['key'] = str(block._sink_count)
+ block._sink_count += 1
#build the port
_Port.__init__(
self,
block=block,
n=n,
+ dir=dir,
)
- self._nports = nports
- self._vlen = vlen
- self._optional = bool(optional)
+ _GUIPort.__init__(self)
+ self._nports = n.find('nports') or ''
+ self._vlen = n.find('vlen') or ''
+ self._optional = bool(n.find('optional'))
+
+ def get_types(self): return ('complex', 'float', 'int', 'short', 'byte', 'msg', '')
def validate(self):
_Port.validate(self)
except AssertionError: self.add_error_message('Port is not connected.')
try: assert self.is_source() or len(self.get_enabled_connections()) <= 1
except AssertionError: self.add_error_message('Port has too many connections.')
+ #message port logic
+ if self.get_type() == 'msg':
+ try: assert not self.get_nports()
+ except AssertionError: self.add_error_message('A port of type "msg" cannot have "nports" set.')
+ try: assert self.get_vlen() == 1
+ except AssertionError: self.add_error_message('A port of type "msg" must have a "vlen" of 1.')
+
+ def rewrite(self):
+ """
+ Handle the port cloning for virtual blocks.
+ """
+ _Port.rewrite(self)
+ if self.get_parent().is_virtual_sink() or self.get_parent().is_virtual_source():
+ try: #clone type and vlen
+ source = self.resolve_virtual_source()
+ self._type = str(source.get_type())
+ self._vlen = str(source.get_vlen())
+ except: #reset type and vlen
+ self._type = ''
+ self._vlen = ''
+
+ def resolve_virtual_source(self):
+ if self.get_parent().is_virtual_sink(): return _get_source_from_virtual_sink_port(self)
+ if self.get_parent().is_virtual_source(): return _get_source_from_virtual_source_port(self)
def get_vlen(self):
"""
'int': Constants.INT_COLOR_SPEC,
'short': Constants.SHORT_COLOR_SPEC,
'byte': Constants.BYTE_COLOR_SPEC,
+ 'msg': Constants.MSG_COLOR_SPEC,
}[self.get_type()]
return {#vlen is non 1
'complex': Constants.COMPLEX_VECTOR_COLOR_SPEC,
}[self.get_type()]
except: return _Port.get_color(self)
-class Source(Port):
-
- def __init__(self, block, n):
- self._n = n #save n
- #key is port index
- n['key'] = str(block._source_count)
- block._source_count = block._source_count + 1
- Port.__init__(self, block, n)
-
- def __del__(self):
- self.get_parent()._source_count = self.get_parent()._source_count - 1
-
-class Sink(Port):
-
- def __init__(self, block, n):
- self._n = n #save n
- #key is port index
- n['key'] = str(block._sink_count)
- block._sink_count = block._sink_count + 1
- Port.__init__(self, block, n)
-
- def __del__(self):
- self.get_parent()._sink_count = self.get_parent()._sink_count - 1
+ def copy(self, new_key=None):
+ n = self._n.copy()
+ if new_key: n['key'] = new_key
+ return self.__class__(self.get_parent(), n, self._dir)
projects / debian / gnuradio / blobdiff