mirror of
https://github.com/ceph/ceph
synced 2024-12-19 18:02:46 +00:00
243 lines
8.3 KiB
Python
Executable File
243 lines
8.3 KiB
Python
Executable File
#!/usr/bin/python3
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import itertools
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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 != '\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 == "*":
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if char == "/":
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in_comment = False
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saw = ""
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if char == "*":
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saw = "*"
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continue
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if saw == "/":
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if char == '*':
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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 == '/':
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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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self.color_palette = itertools.cycle([
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"#000000", # black
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"#1e90ff", # dodgerblue
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"#ff0000", # red
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"#0000ff", # blue
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"#ffa500", # orange
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"#40e0d0", # turquoise
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"#c71585", # mediumvioletred
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])
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def __str__(self):
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return f'''-------------------
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states: {self.states}
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machines: {self.machines}
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edges: {self.edges}
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context: {self.context}
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state_contents: {self.state_contents}
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--------------------'''
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def read_input(self, input_lines):
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previous_line = None
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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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# pass two lines at a time to get the context so that regexes can
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# match on split signatures
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self.get_context(line, previous_line)
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previous_line = line
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def get_context(self, line, previous_line):
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match = re.search(r"(\w+::)*::(?P<tag>\w+)::\w+\(const (?P<event>\w+)", line)
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if match is None and previous_line is not None:
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# it is possible that we need to match on the previous line as well, so join
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# them to make them one line and try and get this matching
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joined_line = ' '.join([previous_line, line])
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match = re.search(r"(\w+::)*::(?P<tag>\w+)::\w+\(\s*const (?P<event>\w+)", joined_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 Exception("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 Exception("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):
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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 not self.context:
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raise Exception("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 not self.context:
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raise Exception("no context at line: " + line)
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if not self.context[-1][2]:
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raise Exception("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, output):
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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('Top Level States: ', top_level, file=sys.stderr)
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print('digraph G {', file=output)
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print('\tsize="7,7"', file=output)
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print('\tcompound=true;', file=output)
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for i in self.emit_state(top_level[0]):
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print('\t' + i, file=output)
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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, file=output)
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print('}', file=output)
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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 = "black";"""
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if state in self.machines.values():
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yield """\tstyle = "filled";"""
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yield """\tfillcolor = "lightgrey";"""
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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 style=filled fillcolor=lightgrey];"
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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 append(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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color = next(self.color_palette)
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appendix = ['label="%s"' % (event,),
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'color="%s"' % (color,),
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'fontcolor="%s"' % (color,)]
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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, append(appendix)))
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if __name__ == '__main__':
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INPUT_GENERATOR = do_filter(line for line in sys.stdin)
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RENDERER = StateMachineRenderer()
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RENDERER.read_input(INPUT_GENERATOR)
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RENDERER.emit_dot(output=sys.stdout)
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