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import os
import inspect, linecache
from rpython.flowspace.model import *
from rpython.tool.udir import udir
from py.process import cmdexec
from rpython.tool.error import offset2lineno
class DotGen:
def __init__(self, graphname, rankdir=None):
self.graphname = safename(graphname)
self.lines = []
self.source = None
self.emit("digraph %s {" % self.graphname)
if rankdir:
self.emit('rankdir="%s"' % rankdir)
def generate(self, storedir=None, target='ps'):
source = self.get_source()
if target is None:
return source # unprocessed
if storedir is None:
storedir = udir
pdot = storedir.join('%s.dot' % self.graphname)
pdot.write(source)
ptarget = pdot.new(ext=target)
cmdexec('dot -T%s %s>%s' % (target, str(pdot),str(ptarget)))
return ptarget
def get_source(self):
if self.source is None:
self.emit("}")
self.source = '\n'.join(self.lines)
del self.lines
return self.source
def emit(self, line):
self.lines.append(line)
def enter_subgraph(self, name):
self.emit("subgraph %s {" % (safename(name),))
def leave_subgraph(self):
self.emit("}")
def emit_edge(self, name1, name2, label="",
style="dashed",
color="black",
dir="forward",
weight="5",
ports=None,
):
d = locals()
attrs = [('%s="%s"' % (x, d[x].replace('"', '\\"').replace('\n', '\\n')))
for x in ['label', 'style', 'color', 'dir', 'weight']]
self.emit('edge [%s];' % ", ".join(attrs))
if ports:
self.emit('%s:%s -> %s:%s' % (safename(name1), ports[0],
safename(name2), ports[1]))
else:
self.emit('%s -> %s' % (safename(name1), safename(name2)))
def emit_node(self, name,
shape="diamond",
label="",
color="black",
fillcolor="white",
style="filled",
width="0.75",
):
d = locals()
attrs = [('%s="%s"' % (x, d[x].replace('"', '\\"').replace('\n', '\\n')))
for x in ['shape', 'label', 'color', 'fillcolor', 'style', 'width']]
self.emit('%s [%s];' % (safename(name), ", ".join(attrs)))
TAG_TO_COLORS = {
"timeshifted": "#cfa5f0",
"portal": "#cfa5f0",
"PortalEntry": "#84abf0",
"PortalReentry": "#f084c2",
}
DEFAULT_TAG_COLOR = "#a5e6f0"
RETURN_COLOR = "green"
EXCEPT_COLOR = "#ffa000"
class FlowGraphDotGen(DotGen):
VERBOSE = False
def __init__(self, graphname, rankdir=None):
DotGen.__init__(self, graphname.replace('.', '_'), rankdir)
def emit_subgraph(self, name, node):
name = name.replace('.', '_') + '_'
self.blocks = {id(None): '(None)'}
self.func = None
self.prefix = name
self.enter_subgraph(name)
tagcolor = TAG_TO_COLORS.get(node.tag, DEFAULT_TAG_COLOR)
self.visit_FunctionGraph(node, tagcolor)
for block in safe_iterblocks(node):
self.visit_Block(block, tagcolor)
self.leave_subgraph()
def blockname(self, block):
i = id(block)
try:
return self.blocks[i]
except KeyError:
self.blocks[i] = name = "%s_%d" % (self.prefix, len(self.blocks))
return name
def visit_FunctionGraph(self, funcgraph, tagcolor):
name = self.prefix # +'_'+funcgraph.name
data = funcgraph.name
if getattr(funcgraph, 'source', None) is not None:
source = funcgraph.source
if self.VERBOSE:
data += "\\n"
else:
data = ""
data += "\\l".join(source.split('\n'))
if hasattr(funcgraph, 'func'):
self.func = funcgraph.func
self.emit_node(name, label=data, shape="box", fillcolor=tagcolor, style="filled")
if hasattr(funcgraph, 'startblock'):
self.emit_edge(name, self.blockname(funcgraph.startblock), 'startblock')
def visit_Block(self, block, tagcolor):
# do the block itself
name = self.blockname(block)
if not isinstance(block, Block):
data = "BROKEN BLOCK\\n%r" % (block,)
self.emit_node(name, label=data)
return
lines = []
for op in block.operations:
lines.extend(repr(op).split('\n'))
lines.append("")
numblocks = len(block.exits)
color = "black"
fillcolor = getattr(block, "blockcolor", "white")
if not numblocks:
shape = "box"
if len(block.inputargs) == 1:
lines[-1] += 'return %s' % tuple(block.inputargs)
fillcolor = RETURN_COLOR
elif len(block.inputargs) == 2:
lines[-1] += 'raise %s, %s' % tuple(block.inputargs)
fillcolor = EXCEPT_COLOR
elif numblocks == 1:
shape = "box"
else:
color = "red"
shape = "octagon"
if block.exitswitch is not None:
lines.append("exitswitch: %s" % (block.exitswitch,))
iargs = " ".join(map(repr, block.inputargs))
if self.VERBOSE:
if block.exc_handler:
eh = ' (EH)'
else:
eh = ''
data = "%s%s%s\\n" % (name, block.at(), eh)
else:
data = "%s\\n" % (name,)
data += "inputargs: %s\\n\\n" % (iargs,)
if self.VERBOSE and block.operations and self.func:
maxoffs = max([op.offset for op in block.operations])
if maxoffs >= 0:
minoffs = min([op.offset for op in block.operations
if op.offset >= 0])
minlineno = offset2lineno(self.func.func_code, minoffs)
maxlineno = offset2lineno(self.func.func_code, maxoffs)
filename = inspect.getsourcefile(self.func)
source = "\l".join([linecache.getline(filename, line).rstrip()
for line in range(minlineno, maxlineno+1)])
if minlineno == maxlineno:
data = data + r"line %d:\n%s\l\n" % (minlineno, source)
else:
data = data + r"lines %d-%d:\n%s\l\n" % (minlineno,
maxlineno, source)
data = data + "\l".join(lines)
self.emit_node(name, label=data, shape=shape, color=color, style="filled", fillcolor=fillcolor)
# do links/exits
for link in block.exits:
name2 = self.blockname(link.target)
label = " ".join(map(repr, link.args))
if link.exitcase is not None:
label = "%s: %s" %(repr(link.exitcase).replace('\\', '\\\\'), label)
self.emit_edge(name, name2, label, style="dotted", color="red")
else:
self.emit_edge(name, name2, label, style="solid")
def make_dot(graphname, graph, storedir=None, target='ps'):
return make_dot_graphs(graph.name, [(graphname, graph)], storedir, target)
def show_dot(graph, storedir = None, target = 'ps'):
name = graph.name
fn = make_dot(name, graph, storedir, target)
os.system('gv %s' % fn)
def make_dot_graphs(basefilename, graphs, storedir=None, target='ps'):
dotgen = FlowGraphDotGen(basefilename)
names = {basefilename: True}
for graphname, graph in graphs:
if graphname in names:
i = 2
while graphname + str(i) in names:
i += 1
graphname = graphname + str(i)
names[graphname] = True
dotgen.emit_subgraph(graphname, graph)
return dotgen.generate(storedir, target)
def _makecharmap():
result = {}
for i in range(256):
result[chr(i)] = '_%02X' % i
for c in 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789':
result[c] = c
result['_'] = '__'
return result
CHAR_MAP = _makecharmap()
del _makecharmap
def safename(name):
# turn a random string into something that is a valid dot identifier,
# avoiding invalid characters and prepending '_' to make sure it is
# not a keyword
name = ''.join([CHAR_MAP[c] for c in name])
return '_' + name
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