2 Copyright 2008, 2009 Free Software Foundation, Inc.
3 This file is part of GNU Radio
5 GNU Radio Companion is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 GNU Radio Companion is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
20 from .. base.Block import Block as _Block
22 import extract_category
26 ##for make source to keep track of indexes
28 ##for make sink to keep track of indexes
31 def __init__(self, flow_graph, n):
33 Make a new block from nested data.
34 @param flow graph the parent element
35 @param n the nested odict
36 @return block a new block
39 self._doc = n.find('doc') or ''
40 self._imports = map(lambda i: i.strip(), n.findall('import'))
41 self._make = n.find('make')
42 self._var_make = n.find('var_make')
43 self._checks = n.findall('check')
44 self._callbacks = n.findall('callback')
48 flow_graph=flow_graph,
55 Call the base class validate.
56 Evaluate the checks: each check must evaluate to True.
61 for check in self._checks:
62 check_res = self.resolve_dependencies(check)
64 check_eval = self.get_parent().evaluate(check_res)
65 try: assert check_eval
66 except AssertionError: self.add_error_message('Check "%s" failed.'%check)
67 except: self.add_error_message('Check "%s" did not evaluate.'%check)
69 for get_ports, get_port in (
70 (self.get_sources, self.get_source),
71 (self.get_sinks, self.get_sink),
73 #how many streaming (non-message) ports?
74 num_ports = len(filter(lambda p: p.get_type() != 'msg', get_ports()))
75 #do nothing for 0 ports
76 if not num_ports: continue
77 #get the nports setting
78 port0 = get_port(str(0))
79 nports = port0.get_nports()
80 #do nothing for no nports
81 if not nports: continue
82 #do nothing if nports is already num ports
83 if nports == num_ports: continue
84 #remove excess ports and connections
85 if nports < num_ports:
86 #remove the connections
87 for key in map(str, range(nports, num_ports)):
89 for connection in port.get_connections():
90 self.get_parent().remove_element(connection)
92 for key in map(str, range(nports, num_ports)):
93 get_ports().remove(get_port(key))
96 if nports > num_ports:
97 for key in map(str, range(num_ports, nports)):
98 prev_port = get_port(str(int(key)-1))
100 get_ports().index(prev_port)+1,
101 prev_port.copy(new_key=key),
105 def port_controller_modify(self, direction):
107 Change the port controller.
108 @param direction +1 or -1
109 @return true for change
112 #concat the nports string from the private nports settings of both port0
114 (self.get_sinks() and self.get_sinks()[0]._nports or '') + \
115 (self.get_sources() and self.get_sources()[0]._nports or '')
116 #modify all params whose keys appear in the nports string
117 for param in self.get_params():
118 if param.is_enum() or param.get_key() not in nports_str: continue
119 #try to increment the port controller by direction
121 value = param.get_evaluated()
122 value = value + direction
124 param.set_value(value)
130 doc = self._doc.strip('\n').replace('\\\n', '')
131 #merge custom doc with doxygen docs
132 return '\n'.join([doc, extract_docs.extract(self.get_key())]).strip('\n')
134 def get_category(self):
135 category = extract_category.extract(self.get_key())
136 #if category: return category
137 return _Block.get_category(self)
139 def get_imports(self):
141 Resolve all import statements.
142 Split each import statement at newlines.
143 Combine all import statments into a list.
144 Filter empty imports.
145 @return a list of import statements
147 return filter(lambda i: i, sum(map(lambda i: self.resolve_dependencies(i).split('\n'), self._imports), []))
149 def get_make(self): return self.resolve_dependencies(self._make)
150 def get_var_make(self): return self.resolve_dependencies(self._var_make)
152 def get_callbacks(self):
154 Get a list of function callbacks for this block.
155 @return a list of strings
157 def make_callback(callback):
158 callback = self.resolve_dependencies(callback)
159 if 'self.' in callback: return callback
160 return 'self.%s.%s'%(self.get_id(), callback)
161 return map(make_callback, self._callbacks)