def parse_net(self, args):
""" Assembles a net from a list of junctions, segments, and labels. """
thisnet = Net(args)
subdata = self.sub_nodes('J S A L Q B'.split())
# finish building thisnet
for netpt in subdata['netpoint'][:]:
# using a copy so that we can modify subdata['netpoint'] inside loop
if netpt.point_id not in thisnet.points:
thisnet.add_point(netpt)
else:
# oh yeah, a net can have a point more than once, because that
# makes *great* sense.
for point in netpt.connected_points:
thisnet.points[netpt.point_id].add_connected_point(point)
for comp in netpt.connected_components:
thisnet.points[netpt.point_id].add_connected_component(comp)
# update subdata['netpoint'] so that ref to netpt points to the
# new combined point
i = subdata['netpoint'].index(netpt)
subdata['netpoint'][i] = thisnet.points[netpt.point_id]
# yuck, passing in-band
thisnet.ibpts = subdata['netpoint']
for pt_a, pt_b in subdata['segment']:
thisnet.connect((subdata['netpoint'][pt_a - 1],
subdata['netpoint'][pt_b - 1]))
for annot in subdata['annot']:
thisnet.add_annotation(annot)
if '=' in annot.value:
thisnet.add_attribute(*(annot.value.split('=', 1)))
return ('net', thisnet)
def make_net(self, net):
""" Construct an openjson net from an eagle net. """
points = {} # (x, y) -> NetPoint
def get_point(x, y):
""" Return a new or existing NetPoint for an (x,y) point """
if (x, y) not in points:
points[x, y] = NetPoint('%da%d' % (x, y), x, y)
out_net.add_point(points[x, y])
return points[x, y]
out_net = Net(net.name)
for segment in get_subattr(net, 'segment', ()):
for wire in get_subattr(segment, 'wire', ()):
out_net.connect((get_point(self.make_length(wire.x1),
self.make_length(wire.y1)),
get_point(self.make_length(wire.x2),
self.make_length(wire.y2))))
for pinref in get_subattr(segment, 'pinref', ()):
self.connect_pinref(pinref,
get_point(*self.get_pinref_point(pinref)))
return out_net
def make_net(self, net):
""" Construct an openjson net from an eagle net. """
points = {} # (x, y) -> NetPoint
def get_point(x, y):
""" Return a new or existing NetPoint for an (x,y) point """
if (x, y) not in points:
points[x, y] = NetPoint('%da%d' % (x, y), x, y)
out_net.add_point(points[x, y])
return points[x, y]
out_net = Net(net.name)
for segment in get_subattr(net, 'segment', ()):
for wire in get_subattr(segment, 'wire', ()):
out_net.connect((get_point(self.make_length(wire.x1),
self.make_length(wire.y1)),
get_point(self.make_length(wire.x2),
self.make_length(wire.y2))))
for pinref in get_subattr(segment, 'pinref', ()):
self.connect_pinref(pinref,
get_point(*self.get_pinref_point(pinref)))
return out_net
class NetTests(unittest.TestCase):
""" The tests of the core module net feature """
def setUp(self):
""" Setup the test case. """
self.net = Net('001')
def tearDown(self):
""" Teardown the test case. """
pass
def test_create_new_net(self):
""" Test the creation of a new empty net. """
assert self.net.net_id == '001'
def test_bounds_simple(self):
'''Make sure bounds() uses all the included NetPoints'''
for (x, y) in ((1, 3), (3, 2), (4, 3), (3, 5)):
net_pt = NetPoint(str((x, y)), x, y)
self.net.add_point(net_pt)
# NetPoints don't actually need to be connected to affect bounds()
top_left, btm_right = self.net.bounds()
self.assertEqual(top_left.x, 1)
self.assertEqual(top_left.y, 2)
self.assertEqual(btm_right.x, 4)
self.assertEqual(btm_right.y, 5)
def calc_nets(self, design, segments):
""" Return a set of Nets from segments """
coord2point = {} # (x, y) -> NetPoint
def get_point(coord):
""" Return a new or existing NetPoint for an (x,y) point """
coord = (int(coord[0]), int(coord[1]))
if coord not in coord2point:
coord2point[coord] = NetPoint('%da%d' % coord, coord[0], coord[1])
return coord2point[coord]
# use this to track connected pins not yet added to a net
self.make_pin_points(design, get_point)
# set of points connected to pins
pin_points = set(coord2point.itervalues())
# turn the (x, y) points into unique NetPoint objects
segments = set((get_point(p1), get_point(p2)) for p1, p2 in segments)
nets = []
# Iterate over the segments, removing segments when added to a net
while segments:
seg = segments.pop() # pick a point
newnet = Net('')
map(pin_points.discard, seg) # mark points as used
newnet.connect(seg)
found = True
while found:
found = set()
for seg in segments: # iterate over segments
if newnet.connected(seg): # segment touching the net
map(pin_points.discard, seg) # mark points as used
newnet.connect(seg) # add the segment
found.add(seg)
for seg in found:
segments.remove(seg)
nets.append(newnet)
# add single-point nets for overlapping pins that are not
# already in other nets
for point in pin_points:
if len(point.connected_components) > 1:
net = Net('')
net.add_point(point)
nets.append(net)
for net in nets:
net.net_id = min(net.points)
nets.sort(key=lambda net : net.net_id)
return nets
def test_write_net(self):
"""
The write_net method creates the correct kicad wires from an
openjson net.
"""
net = Net('')
p1 = NetPoint('p1', 0, 0)
p2 = NetPoint('p2', 1, 0)
p3 = NetPoint('p3', 0, 1)
net.add_point(p1)
net.add_point(p2)
net.add_point(p3)
net.conn_point(p1, p2)
net.conn_point(p1, p3)
writer = KiCAD()
buf = StringIO()
writer.write_net(buf, net)
self.assertEqual(
buf.getvalue(),
'Wire Wire Line\n\t0 0 0 ' + str(int(-1 / MULT)) +
'\nWire Wire Line\n\t0 0 ' + str(int(1 / MULT)) +
' 0\n')
def test_bounds_all_elts(self):
'''bounds() with all the elements competing'''
net = Net('foo')
mkbounds(net, 3, 3, -1, -2)
self.des.add_net(net)
annot = Annotation('foo', 3, 3, 0, True)
mkbounds(annot, 3, 3, 3, 5)
self.des.design_attributes.add_annotation(annot)
libcomp = Component('bar')
libcomp.add_symbol(Symbol())
libcomp.symbols[0].add_body(Body())
mkbounds(libcomp.symbols[0].bodies[0], 0, 0, 3, 3)
self.des.add_component('foo', libcomp)
compinst = ComponentInstance('bar', 'foo', 0)
compinst.add_symbol_attribute(SymbolAttribute(3, 0, 0, False))
self.des.add_component_instance(compinst)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, -1)
self.assertEqual(top_left.y, -2)
self.assertEqual(btm_right.x, 6)
self.assertEqual(btm_right.y, 5)
def _get_point(self, net_id, point_id, x, y):
if net_id not in self.nets:
n = Net(net_id)
self.design.add_net(n)
self.nets[n.net_id] = n
else:
n = self.nets[net_id]
key = (x, y)
if key not in self.net_points:
if not point_id:
point_id = str(self._id)
self._id += 1
np = NetPoint(net_id + '-' + point_id, x, y)
n.add_point(np)
self.net_points[key] = np
else:
np = self.net_points[key]
return np
def test_bounds_neg_coords(self):
'''Test bounds() when the schematic is all negative coordinates'''
net = Net('foo')
mkbounds(net, -1, -2, -3, -4)
self.des.add_net(net)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, -3)
self.assertEqual(top_left.y, -4)
self.assertEqual(btm_right.x, -1)
self.assertEqual(btm_right.y, -2)
def parse_net(self, args):
""" Assembles a net from a list of junctions, segments, and labels. """
thisnet = Net(args)
subdata = defaultdict(list)
for phrase in self.stream:
print phrase
cmd, _sep, args = phrase.partition(' ')
if cmd not in ('J', 'S', 'A', 'L', 'Q', 'B'):
self.stream.push(phrase)
break
print args
k, v = self.parsenode(cmd)(args)
subdata[k].append(v)
# finish building thisnet
for netpt in subdata['netpoint'][:]:
# using a copy so that we can modify subdata['netpoint'] inside loop
if netpt.point_id not in thisnet.points:
thisnet.add_point(netpt)
else:
# oh yeah, a net can have a point more than once, because that
# makes *great* sense.
for point in netpt.connected_points:
thisnet.points[netpt.point_id].add_connected_point(point)
for comp in netpt.connected_components:
thisnet.points[netpt.point_id].add_connected_component(comp)
# update subdata['netpoint'] so that ref to netpt points to the
# new combined point
i = subdata['netpoint'].index(netpt)
subdata['netpoint'][i] = thisnet.points[netpt.point_id]
# yuck, passing in-band
thisnet.ibpts = subdata['netpoint']
for pt_a, pt_b in subdata['segment']:
thisnet.connect((subdata['netpoint'][pt_a - 1],
subdata['netpoint'][pt_b - 1]))
for annot in subdata['annot']:
thisnet.add_annotation(annot)
if '=' in annot.value:
thisnet.add_attribute(*(annot.value.split('=', 1)))
return ('net', thisnet)
def test_bounds_nets(self):
'''Test bounds() with just the design's nets'''
leftnet = Net('foo1')
topnet = Net('foo2')
rightnet = Net('foo3')
botnet = Net('foo4')
# limits minx=2, miny=1, maxx=7, maxy=9
mkbounds(leftnet, 2, 3, 3, 3)
mkbounds(topnet, 3, 1, 3, 3)
mkbounds(rightnet, 3, 3, 7, 3)
mkbounds(botnet, 3, 3, 3, 9)
self.des.add_net(topnet)
self.des.add_net(rightnet)
self.des.add_net(leftnet)
self.des.add_net(botnet)
top_left, btm_right = self.des.bounds()
self.assertEqual(top_left.x, 2)
self.assertEqual(top_left.y, 1)
self.assertEqual(btm_right.x, 7)
self.assertEqual(btm_right.y, 9)
def parse_nets(self, nets):
""" Extract nets. """
for net in nets:
net_id = net.get('net_id')
ret_net = Net(net_id)
# Add Annotations
for annotation in net.get('annotations'):
anno = self.parse_annotation(annotation)
ret_net.add_annotation(anno)
# Get the Attributes
for key, value in net.get('attributes').items():
ret_net.add_attribute(key, value)
# Get the Points
for net_point in net.get('points'):
npnt = self.parse_net_point(net_point)
ret_net.add_point(npnt)
self.design.add_net(ret_net)
def build_nets(self):
""" Build the nets from the connects, points, and instances """
todo = set(self.connects) # set([(index, cid)])
points = {} # (x, y) -> NetPoint
nets = []
def get_point(point):
""" Return a new or existing NetPoint for an (x,y) point """
if point not in points:
points[point] = NetPoint('%da%d' % point, point[0], point[1])
return points[point]
def update_net(net, main_key):
""" Update a net with a new set of connects """
todo.discard(main_key)
main_point = get_point(self.points[main_key])
net.add_point(main_point)
remaining = []
for conn_key in self.connects[main_key]:
if conn_key in todo:
remaining.append(conn_key)
if conn_key in self.points:
connect(net, main_point, get_point(self.points[conn_key]))
elif conn_key[0] in self.component_instances:
inst = self.component_instances[conn_key[0]]
cpt_parser = self.components[inst.library_id]
cpt_parser.connect_point(conn_key[1], inst, main_point)
return remaining
while todo:
net = Net(str(len(nets)))
nets.append(net)
remaining = [todo.pop()]
while remaining:
remaining.extend(update_net(net, remaining.pop(0)))
return nets
def parse_nets(self, nets):
""" Extract nets. """
for net in nets:
net_id = net.get('net_id')
ret_net = Net(net_id)
# Add Annotations
for annotation in net.get('annotations'):
anno = self.parse_annotation(annotation)
ret_net.add_annotation(anno)
# Get the Attributes
for key, value in net.get('attributes').items():
ret_net.add_attribute(key, value)
# Get the Points
for net_point in net.get('points'):
npnt = self.parse_net_point(net_point)
ret_net.add_point(npnt)
self.design.add_net(ret_net)
def calc_nets(self, segments):
""" Return a set of Nets from segments """
points = {} # (x, y) -> NetPoint
def get_point(point):
""" Return a new or existing NetPoint for an (x,y) point """
point = (make_length(point[0]), make_length(point[1]))
if point not in points:
points[point] = NetPoint('%da%d' % point, point[0], point[1])
return points[point]
# turn the (x, y) points into unique NetPoint objects
segments = set((get_point(p1), get_point(p2)) for p1, p2 in segments)
nets = []
# Iterate over the segments, removing segments when added to a net
while segments:
seg = segments.pop() # pick a point
newnet = Net('')
newnet.connect(seg)
found = True
while found:
found = set()
for seg in segments: # iterate over segments
if newnet.connected(seg): # segment touching the net
newnet.connect(seg) # add the segment
found.add(seg)
for seg in found:
segments.remove(seg)
nets.append(newnet)
for net in nets:
net.net_id = min(net.points)
nets.sort(key=lambda net: net.net_id)
return nets
def calc_nets(self, segments):
""" Return a set of Nets from segments """
points = {} # (x, y) -> NetPoint
def get_point(point):
""" Return a new or existing NetPoint for an (x,y) point """
point = (make_length(point[0]), make_length(point[1]))
if point not in points:
points[point] = NetPoint('%da%d' % point, point[0], point[1])
return points[point]
# turn the (x, y) points into unique NetPoint objects
segments = set((get_point(p1), get_point(p2)) for p1, p2 in segments)
nets = []
# Iterate over the segments, removing segments when added to a net
while segments:
seg = segments.pop() # pick a point
newnet = Net('')
newnet.connect(seg)
found = True
while found:
found = set()
for seg in segments: # iterate over segments
if newnet.connected(seg): # segment touching the net
newnet.connect(seg) # add the segment
found.add(seg)
for seg in found:
segments.remove(seg)
nets.append(newnet)
for net in nets:
net.net_id = min(net.points)
nets.sort(key=lambda net : net.net_id)
return nets
def parse_net(self, args):
""" Assembles a net from a list of junctions, segments, and labels. """
thisnet = Net(args)
subdata = defaultdict(list)
for phrase in self.stream:
cmd, _sep, args = phrase.partition(' ')
if cmd not in ('J', 'S', 'A', 'L', 'Q', 'B'):
self.stream.push(phrase)
break
k, v = self.parsenode(cmd)(args)
subdata[k].append(v)
# finish building thisnet
for netpt in subdata['netpoint'][:]:
# using a copy so that we can modify subdata['netpoint'] inside loop
if netpt.point_id not in thisnet.points:
thisnet.add_point(netpt)
else:
# oh yeah, a net can have a point more than once, because that
# makes *great* sense.
for point in netpt.connected_points:
thisnet.points[netpt.point_id].add_connected_point(point)
for comp in netpt.connected_components:
thisnet.points[netpt.point_id].add_connected_component(comp)
# update subdata['netpoint'] so that ref to netpt points to the
# new combined point
i = subdata['netpoint'].index(netpt)
subdata['netpoint'][i] = thisnet.points[netpt.point_id]
# yuck, passing in-band
thisnet.ibpts = subdata['netpoint']
for pt_a, pt_b in subdata['segment']:
thisnet.connect((subdata['netpoint'][pt_a - 1],
subdata['netpoint'][pt_b - 1]))
for annot in subdata['annot']:
thisnet.add_annotation(annot)
if '=' in annot.value:
thisnet.add_attribute(*(annot.value.split('=', 1)))
return ('net', thisnet)
def get_net(point):
""" Return a new or existing Net for a NetPoint. """
if point not in point2net:
point2net[point] = Net(str(len(nets)))
nets.add(point2net[point])
return point2net[point]
def parse_net(self, args):
""" Assembles a net from a list of junctions, segments, and labels. """
thisnet = Net(args)
subdata = self.sub_nodes('J S A L Q B'.split())
# finish building thisnet
for netpt in subdata['netpoint'][:]:
# using a copy so that we can modify subdata['netpoint'] inside loop
if netpt.point_id not in thisnet.points:
thisnet.add_point(netpt)
else:
# oh yeah, a net can have a point more than once, because that
# makes *great* sense.
for point in netpt.connected_points:
thisnet.points[netpt.point_id].add_connected_point(point)
for comp in netpt.connected_components:
thisnet.points[netpt.point_id].add_connected_component(
comp)
# update subdata['netpoint'] so that ref to netpt points to the
# new combined point
i = subdata['netpoint'].index(netpt)
subdata['netpoint'][i] = thisnet.points[netpt.point_id]
# yuck, passing in-band
thisnet.ibpts = subdata['netpoint']
for pt_a, pt_b in subdata['segment']:
thisnet.connect(
(subdata['netpoint'][pt_a - 1], subdata['netpoint'][pt_b - 1]))
for annot in subdata['annot']:
thisnet.add_annotation(annot)
if '=' in annot.value:
thisnet.add_attribute(*(annot.value.split('=', 1)))
return ('net', thisnet)
def setUp(self):
""" Setup the test case. """
self.net = Net('001')
def calc_nets(self, design, segments):
""" Return a set of Nets from segments """
coord2point = {} # (x, y) -> NetPoint
def get_point(coord):
""" Return a new or existing NetPoint for an (x,y) point """
coord = (int(coord[0]), int(coord[1]))
if coord not in coord2point:
coord2point[coord] = NetPoint('%da%d' % coord, coord[0],
coord[1])
return coord2point[coord]
# use this to track connected pins not yet added to a net
self.make_pin_points(design, get_point)
# set of points connected to pins
pin_points = set(coord2point.itervalues())
# turn the (x, y) points into unique NetPoint objects
segments = set((get_point(p1), get_point(p2)) for p1, p2 in segments)
nets = []
# Iterate over the segments, removing segments when added to a net
while segments:
seg = segments.pop() # pick a point
newnet = Net('')
map(pin_points.discard, seg) # mark points as used
newnet.connect(seg)
found = True
while found:
found = set()
for seg in segments: # iterate over segments
if newnet.connected(seg): # segment touching the net
map(pin_points.discard, seg) # mark points as used
newnet.connect(seg) # add the segment
found.add(seg)
for seg in found:
segments.remove(seg)
nets.append(newnet)
# add single-point nets for overlapping pins that are not
# already in other nets
for point in pin_points:
if len(point.connected_components) > 1:
net = Net('')
net.add_point(point)
nets.append(net)
for net in nets:
net.net_id = min(net.points)
nets.sort(key=lambda net: net.net_id)
return nets
