--- /dev/null
+#!/usr/bin/env python
+import re
+import sys
+
+
+def do_filter(generator):
+ return acc_lines(remove_multiline_comments(to_char(remove_single_line_comments(generator))))
+
+
+def acc_lines(generator):
+ current = ""
+ for i in generator:
+ current += i
+ if i == ';' or \
+ i == '{' or \
+ i == '}':
+ yield current.lstrip("\n")
+ current = ""
+
+
+def to_char(generator):
+ for line in generator:
+ for char in line:
+ if char is not '\n':
+ yield char
+ else:
+ yield ' '
+
+
+def remove_single_line_comments(generator):
+ for i in generator:
+ if len(i) and i[0] == '#':
+ continue
+ yield re.sub(r'//.*', '', i)
+
+
+def remove_multiline_comments(generator):
+ saw = ""
+ in_comment = False
+ for char in generator:
+ if in_comment:
+ if saw is "*":
+ if char is "/":
+ in_comment = False
+ saw = ""
+ if char is "*":
+ saw = "*"
+ continue
+ if saw is "/":
+ if char is '*':
+ in_comment = True
+ saw = ""
+ continue
+ else:
+ yield saw
+ saw = ""
+ if char is '/':
+ saw = "/"
+ continue
+ yield char
+
+
+class StateMachineRenderer(object):
+ def __init__(self):
+ self.states = {} # state -> parent
+ self.machines = {} # state-> initial
+ self.edges = {} # event -> [(state, state)]
+
+ self.context = [] # [(context, depth_encountered)]
+ self.context_depth = 0
+ self.state_contents = {}
+ self.subgraphnum = 0
+ self.clusterlabel = {}
+
+ def __str__(self):
+ return "-------------------\n\nstates: %s\n\n machines: %s\n\n edges: %s\n\n context %s\n\n state_contents %s\n\n--------------------" % (
+ self.states,
+ self.machines,
+ self.edges,
+ self.context,
+ self.state_contents
+ )
+
+ def read_input(self, input_lines):
+ previous_line = None
+ for line in input_lines:
+ self.get_state(line)
+ self.get_event(line)
+ # pass two lines at a time to get the context so that regexes can
+ # match on split signatures
+ self.get_context(line, previous_line)
+ previous_line = line
+
+ def get_context(self, line, previous_line):
+ match = re.search(r"(\w+::)*::(?P<tag>\w+)::\w+\(const (?P<event>\w+)", line)
+ if match is None and previous_line is not None:
+ # it is possible that we need to match on the previous line as well, so join
+ # them to make them one line and try and get this matching
+ joined_line = ' '.join([previous_line, line])
+ match = re.search(r"(\w+::)*::(?P<tag>\w+)::\w+\(\s*const (?P<event>\w+)", joined_line)
+ if match is not None:
+ self.context.append((match.group('tag'), self.context_depth, match.group('event')))
+ if '{' in line:
+ self.context_depth += 1
+ if '}' in line:
+ self.context_depth -= 1
+ while len(self.context) and self.context[-1][1] == self.context_depth:
+ self.context.pop()
+
+ def get_state(self, line):
+ if "boost::statechart::state_machine" in line:
+ tokens = re.search(
+ r"boost::statechart::state_machine<\s*(\w*),\s*(\w*)\s*>",
+ line)
+ if tokens is None:
+ raise Exception("Error: malformed state_machine line: " + line)
+ self.machines[tokens.group(1)] = tokens.group(2)
+ self.context.append((tokens.group(1), self.context_depth, ""))
+ return
+ if "boost::statechart::state" in line:
+ tokens = re.search(
+ r"boost::statechart::state<\s*(\w*),\s*(\w*)\s*,?\s*(\w*)\s*>",
+ line)
+ if tokens is None:
+ raise Exception("Error: malformed state line: " + line)
+ self.states[tokens.group(1)] = tokens.group(2)
+ if tokens.group(2) not in self.state_contents.keys():
+ self.state_contents[tokens.group(2)] = []
+ self.state_contents[tokens.group(2)].append(tokens.group(1))
+ if tokens.group(3) is not "":
+ self.machines[tokens.group(1)] = tokens.group(3)
+ self.context.append((tokens.group(1), self.context_depth, ""))
+ return
+
+ def get_event(self, line):
+ if "boost::statechart::transition" in line:
+ for i in re.finditer(r'boost::statechart::transition<\s*([\w:]*)\s*,\s*(\w*)\s*>',
+ line):
+ if i.group(1) not in self.edges.keys():
+ self.edges[i.group(1)] = []
+ if len(self.context) is 0:
+ raise Exception("no context at line: " + line)
+ self.edges[i.group(1)].append((self.context[-1][0], i.group(2)))
+ i = re.search("return\s+transit<\s*(\w*)\s*>()", line)
+ if i is not None:
+ if len(self.context) is 0:
+ raise Exception("no context at line: " + line)
+ if self.context[-1][2] is "":
+ raise Exception("no event in context at line: " + line)
+ if self.context[-1][2] not in self.edges.keys():
+ self.edges[self.context[-1][2]] = []
+ self.edges[self.context[-1][2]].append((self.context[-1][0], i.group(1)))
+
+ def emit_dot(self):
+ top_level = []
+ for state in self.machines.keys():
+ if state not in self.states.keys():
+ top_level.append(state)
+ print >> sys.stderr, "Top Level States: ", str(top_level)
+ print """digraph G {"""
+ print '\tsize="7,7"'
+ print """\tcompound=true;"""
+ for i in self.emit_state(top_level[0]):
+ print '\t' + i
+ for i in self.edges.keys():
+ for j in self.emit_event(i):
+ print j
+ print """}"""
+
+ def emit_state(self, state):
+ if state in self.state_contents.keys():
+ self.clusterlabel[state] = "cluster%s" % (str(self.subgraphnum),)
+ yield "subgraph cluster%s {" % (str(self.subgraphnum),)
+ self.subgraphnum += 1
+ yield """\tlabel = "%s";""" % (state,)
+ yield """\tcolor = "blue";"""
+ for j in self.state_contents[state]:
+ for i in self.emit_state(j):
+ yield "\t"+i
+ yield "}"
+ else:
+ found = False
+ for (k, v) in self.machines.items():
+ if v == state:
+ yield state+"[shape=Mdiamond];"
+ found = True
+ break
+ if not found:
+ yield state+";"
+
+ def emit_event(self, event):
+ def append(app):
+ retval = "["
+ for i in app:
+ retval += (i + ",")
+ retval += "]"
+ return retval
+ for (fro, to) in self.edges[event]:
+ appendix = ['label="%s"' % (event,)]
+ if fro in self.machines.keys():
+ appendix.append("ltail=%s" % (self.clusterlabel[fro],))
+ while fro in self.machines.keys():
+ fro = self.machines[fro]
+ if to in self.machines.keys():
+ appendix.append("lhead=%s" % (self.clusterlabel[to],))
+ while to in self.machines.keys():
+ to = self.machines[to]
+ yield("%s -> %s %s;" % (fro, to, append(appendix)))
+
+
+INPUT_GENERATOR = do_filter(sys.stdin.xreadlines())
+RENDERER = StateMachineRenderer()
+RENDERER.read_input(INPUT_GENERATOR)
+RENDERER.emit_dot()
Code Review / stor4nfv.git / blobdiff