mirror of https://github.com/ceph/ceph
202 lines
7.0 KiB
Python
Executable File
202 lines
7.0 KiB
Python
Executable File
#!/usr/bin/python
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import re
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import sys
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def do_filter(generator):
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return acc_lines(remove_multiline_comments(to_char(remove_single_line_comments(generator))))
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def acc_lines(generator):
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current = ""
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for i in generator:
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current += i
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if i == ';' or \
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i == '{' or \
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i == '}':
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yield current.lstrip("\n")
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current = ""
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def to_char(generator):
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for line in generator:
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for char in line:
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if char is not '\n':
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yield char
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else:
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yield ' '
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def remove_single_line_comments(generator):
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for i in generator:
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if len(i) and i[0] == '#':
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continue
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yield re.sub(r'//.*', '', i)
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def remove_multiline_comments(generator):
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saw = ""
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in_comment = False
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for char in generator:
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if in_comment:
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if saw is "*":
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if char is "/":
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in_comment = False
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saw = ""
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if char is "*":
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saw = "*"
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continue
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if saw is "/":
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if char is '*':
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in_comment = True
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saw = ""
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continue
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else:
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yield saw
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saw = ""
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if char is '/':
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saw = "/"
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continue
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yield char
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class StateMachineRenderer(object):
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def __init__(self):
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self.states = {} # state -> parent
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self.machines = {} # state-> initial
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self.edges = {} # event -> [(state, state)]
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self.context = [] # [(context, depth_encountered)]
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self.context_depth = 0
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self.state_contents = {}
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self.subgraphnum = 0
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self.clusterlabel = {}
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def __str__(self):
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return "-------------------\n\nstates: %s\n\n machines: %s\n\n edges: %s\n\n context %s\n\n state_contents %s\n\n--------------------" % (
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self.states,
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self.machines,
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self.edges,
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self.context,
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self.state_contents
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)
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def read_input(self, input_lines):
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for line in input_lines:
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self.get_state(line)
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self.get_event(line)
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self.get_context(line)
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def get_context(self, line):
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match = re.search(r"(\w+::)*::(?P<tag>\w+)::\w+\(const (?P<event>\w+)",
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line)
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if match is not None:
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self.context.append((match.group('tag'), self.context_depth, match.group('event')))
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if '{' in line:
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self.context_depth += 1
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if '}' in line:
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self.context_depth -= 1
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while len(self.context) and self.context[-1][1] == self.context_depth:
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self.context.pop()
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def get_state(self, line):
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if "boost::statechart::state_machine" in line:
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tokens = re.search(
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r"boost::statechart::state_machine<\s*(\w*),\s*(\w*)\s*>",
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line)
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if tokens is None:
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raise "Error: malformed state_machine line: " + line
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self.machines[tokens.group(1)] = tokens.group(2)
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self.context.append((tokens.group(1), self.context_depth, ""))
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return
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if "boost::statechart::state" in line:
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tokens = re.search(
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r"boost::statechart::state<\s*(\w*),\s*(\w*)\s*,?\s*(\w*)\s*>",
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line)
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if tokens is None:
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raise "Error: malformed state line: " + line
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self.states[tokens.group(1)] = tokens.group(2)
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if tokens.group(2) not in self.state_contents.keys():
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self.state_contents[tokens.group(2)] = []
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self.state_contents[tokens.group(2)].append(tokens.group(1))
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if tokens.group(3) is not "":
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self.machines[tokens.group(1)] = tokens.group(3)
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self.context.append((tokens.group(1), self.context_depth, ""))
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return
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def get_event(self, line):
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if "boost::statechart::transition" in line:
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for i in re.finditer(r'boost::statechart::transition<\s*([\w:]*)\s*,\s*(\w*)\s*>',
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line):
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if i.group(1) not in self.edges.keys():
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self.edges[i.group(1)] = []
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if len(self.context) is 0:
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raise "no context at line: " + line
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self.edges[i.group(1)].append((self.context[-1][0], i.group(2)))
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i = re.search("return\s+transit<\s*(\w*)\s*>()", line)
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if i is not None:
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if len(self.context) is 0:
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raise "no context at line: " + line
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if self.context[-1][2] is "":
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raise "no event in context at line: " + line
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if self.context[-1][2] not in self.edges.keys():
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self.edges[self.context[-1][2]] = []
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self.edges[self.context[-1][2]].append((self.context[-1][0], i.group(1)))
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def emit_dot(self):
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top_level = []
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for state in self.machines.keys():
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if state not in self.states.keys():
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top_level.append(state)
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print >>sys.stderr, "Top Level States: ", str(top_level)
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print """digraph G {"""
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print '\tsize="7,7"'
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print """\tcompound=true;"""
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for i in self.emit_state(top_level[0]):
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print '\t' + i
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for i in self.edges.keys():
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for j in self.emit_event(i):
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print j
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print """}"""
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def emit_state(self, state):
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if state in self.state_contents.keys():
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self.clusterlabel[state] = "cluster%s"%(str(self.subgraphnum),)
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yield "subgraph cluster%s {"%(str(self.subgraphnum),)
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self.subgraphnum += 1
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yield """\tlabel = "%s";"""%(state,)
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yield """\tcolor = "blue";"""
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for j in self.state_contents[state]:
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for i in self.emit_state(j):
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yield "\t"+i
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yield "}"
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else:
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found = False
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for (k,v) in self.machines.items():
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if v == state:
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yield state+"[shape=Mdiamond];"
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found = True
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break;
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if not found:
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yield state+";"
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def emit_event(self, event):
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def ap(app):
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retval = "["
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for i in app:
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retval += (i + ",")
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retval += "]"
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return retval
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for (fro, to) in self.edges[event]:
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appendix = ['label="%s"'%(event,)]
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if fro in self.machines.keys():
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appendix.append("ltail=%s"%(self.clusterlabel[fro],))
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while fro in self.machines.keys():
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fro = self.machines[fro]
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if to in self.machines.keys():
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appendix.append("lhead=%s"%(self.clusterlabel[to],))
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while to in self.machines.keys():
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to = self.machines[to]
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yield("%s -> %s %s;"%(fro, to, ap(appendix)))
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input_generator = do_filter(sys.stdin.xreadlines())
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renderer = StateMachineRenderer()
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renderer.read_input(input_generator)
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renderer.emit_dot()
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