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789 lines
28 KiB
Python
789 lines
28 KiB
Python
#!/usr/bin/env python
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# portions copyright 2001, Autonomous Zones Industries, Inc., all rights...
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# err... reserved and offered to the public under the terms of the
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# Python 2.2 license.
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# Author: Zooko O'Whielacronx
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# http://zooko.com/
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# mailto:zooko@zooko.com
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#
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# Copyright 2000, Mojam Media, Inc., all rights reserved.
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# Author: Skip Montanaro
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#
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# Copyright 1999, Bioreason, Inc., all rights reserved.
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# Author: Andrew Dalke
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#
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# Copyright 1995-1997, Automatrix, Inc., all rights reserved.
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# Author: Skip Montanaro
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#
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# Copyright 1991-1995, Stichting Mathematisch Centrum, all rights reserved.
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#
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#
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# Permission to use, copy, modify, and distribute this Python software and
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# its associated documentation for any purpose without fee is hereby
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# granted, provided that the above copyright notice appears in all copies,
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# and that both that copyright notice and this permission notice appear in
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# supporting documentation, and that the name of neither Automatrix,
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# Bioreason or Mojam Media be used in advertising or publicity pertaining to
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# distribution of the software without specific, written prior permission.
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#
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"""program/module to trace Python program or function execution
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Sample use, command line:
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trace.py -c -f counts --ignore-dir '$prefix' spam.py eggs
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trace.py -t --ignore-dir '$prefix' spam.py eggs
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trace.py --trackcalls spam.py eggs
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Sample use, programmatically
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# create a Trace object, telling it what to ignore, and whether to
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# do tracing or line-counting or both.
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trace = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix,], trace=0,
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count=1)
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# run the new command using the given trace
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trace.run('main()')
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# make a report, telling it where you want output
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r = trace.results()
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r.write_results(show_missing=True)
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"""
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import linecache
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import os
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import re
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import sys
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import threading
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import token
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import tokenize
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import types
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import gc
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try:
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import cPickle
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pickle = cPickle
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except ImportError:
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import pickle
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def usage(outfile):
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outfile.write("""Usage: %s [OPTIONS] <file> [ARGS]
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Meta-options:
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--help Display this help then exit.
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--version Output version information then exit.
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Otherwise, exactly one of the following three options must be given:
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-t, --trace Print each line to sys.stdout before it is executed.
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-c, --count Count the number of times each line is executed
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and write the counts to <module>.cover for each
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module executed, in the module's directory.
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See also `--coverdir', `--file', `--no-report' below.
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-l, --listfuncs Keep track of which functions are executed at least
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once and write the results to sys.stdout after the
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program exits.
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-T, --trackcalls Keep track of caller/called pairs and write the
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results to sys.stdout after the program exits.
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-r, --report Generate a report from a counts file; do not execute
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any code. `--file' must specify the results file to
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read, which must have been created in a previous run
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with `--count --file=FILE'.
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Modifiers:
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-f, --file=<file> File to accumulate counts over several runs.
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-R, --no-report Do not generate the coverage report files.
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Useful if you want to accumulate over several runs.
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-C, --coverdir=<dir> Directory where the report files. The coverage
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report for <package>.<module> is written to file
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<dir>/<package>/<module>.cover.
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-m, --missing Annotate executable lines that were not executed
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with '>>>>>> '.
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-s, --summary Write a brief summary on stdout for each file.
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(Can only be used with --count or --report.)
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Filters, may be repeated multiple times:
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--ignore-module=<mod> Ignore the given module and its submodules
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(if it is a package).
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--ignore-dir=<dir> Ignore files in the given directory (multiple
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directories can be joined by os.pathsep).
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""" % sys.argv[0])
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PRAGMA_NOCOVER = "#pragma NO COVER"
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# Simple rx to find lines with no code.
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rx_blank = re.compile(r'^\s*(#.*)?$')
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class Ignore:
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def __init__(self, modules = None, dirs = None):
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self._mods = modules or []
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self._dirs = dirs or []
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self._dirs = map(os.path.normpath, self._dirs)
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self._ignore = { '<string>': 1 }
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def names(self, filename, modulename):
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if self._ignore.has_key(modulename):
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return self._ignore[modulename]
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# haven't seen this one before, so see if the module name is
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# on the ignore list. Need to take some care since ignoring
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# "cmp" musn't mean ignoring "cmpcache" but ignoring
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# "Spam" must also mean ignoring "Spam.Eggs".
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for mod in self._mods:
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if mod == modulename: # Identical names, so ignore
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self._ignore[modulename] = 1
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return 1
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# check if the module is a proper submodule of something on
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# the ignore list
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n = len(mod)
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# (will not overflow since if the first n characters are the
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# same and the name has not already occured, then the size
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# of "name" is greater than that of "mod")
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if mod == modulename[:n] and modulename[n] == '.':
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self._ignore[modulename] = 1
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return 1
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# Now check that __file__ isn't in one of the directories
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if filename is None:
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# must be a built-in, so we must ignore
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self._ignore[modulename] = 1
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return 1
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# Ignore a file when it contains one of the ignorable paths
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for d in self._dirs:
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# The '+ os.sep' is to ensure that d is a parent directory,
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# as compared to cases like:
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# d = "/usr/local"
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# filename = "/usr/local.py"
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# or
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# d = "/usr/local.py"
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# filename = "/usr/local.py"
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if filename.startswith(d + os.sep):
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self._ignore[modulename] = 1
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return 1
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# Tried the different ways, so we don't ignore this module
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self._ignore[modulename] = 0
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return 0
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def modname(path):
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"""Return a plausible module name for the patch."""
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base = os.path.basename(path)
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filename, ext = os.path.splitext(base)
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return filename
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def fullmodname(path):
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"""Return a plausible module name for the path."""
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# If the file 'path' is part of a package, then the filename isn't
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# enough to uniquely identify it. Try to do the right thing by
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# looking in sys.path for the longest matching prefix. We'll
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# assume that the rest is the package name.
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longest = ""
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for dir in sys.path:
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if path.startswith(dir) and path[len(dir)] == os.path.sep:
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if len(dir) > len(longest):
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longest = dir
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if longest:
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base = path[len(longest) + 1:]
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else:
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base = path
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base = base.replace(os.sep, ".")
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if os.altsep:
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base = base.replace(os.altsep, ".")
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filename, ext = os.path.splitext(base)
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return filename
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class CoverageResults:
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def __init__(self, counts=None, calledfuncs=None, infile=None,
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callers=None, outfile=None):
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self.counts = counts
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if self.counts is None:
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self.counts = {}
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self.counter = self.counts.copy() # map (filename, lineno) to count
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self.calledfuncs = calledfuncs
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if self.calledfuncs is None:
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self.calledfuncs = {}
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self.calledfuncs = self.calledfuncs.copy()
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self.callers = callers
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if self.callers is None:
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self.callers = {}
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self.callers = self.callers.copy()
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self.infile = infile
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self.outfile = outfile
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if self.infile:
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# Try to merge existing counts file.
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try:
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counts, calledfuncs, callers = \
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pickle.load(open(self.infile, 'rb'))
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self.update(self.__class__(counts, calledfuncs, callers))
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except (IOError, EOFError, ValueError), err:
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print >> sys.stderr, ("Skipping counts file %r: %s"
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% (self.infile, err))
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def update(self, other):
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"""Merge in the data from another CoverageResults"""
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counts = self.counts
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calledfuncs = self.calledfuncs
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callers = self.callers
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other_counts = other.counts
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other_calledfuncs = other.calledfuncs
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other_callers = other.callers
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for key in other_counts.keys():
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counts[key] = counts.get(key, 0) + other_counts[key]
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for key in other_calledfuncs.keys():
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calledfuncs[key] = 1
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for key in other_callers.keys():
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callers[key] = 1
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def write_results(self, show_missing=True, summary=False, coverdir=None):
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"""
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@param coverdir
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"""
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if self.calledfuncs:
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print
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print "functions called:"
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calls = self.calledfuncs.keys()
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calls.sort()
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for filename, modulename, funcname in calls:
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print ("filename: %s, modulename: %s, funcname: %s"
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% (filename, modulename, funcname))
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if self.callers:
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print
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print "calling relationships:"
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calls = self.callers.keys()
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calls.sort()
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lastfile = lastcfile = ""
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for ((pfile, pmod, pfunc), (cfile, cmod, cfunc)) in calls:
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if pfile != lastfile:
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print
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print "***", pfile, "***"
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lastfile = pfile
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lastcfile = ""
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if cfile != pfile and lastcfile != cfile:
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print " -->", cfile
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lastcfile = cfile
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print " %s.%s -> %s.%s" % (pmod, pfunc, cmod, cfunc)
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# turn the counts data ("(filename, lineno) = count") into something
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# accessible on a per-file basis
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per_file = {}
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for filename, lineno in self.counts.keys():
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lines_hit = per_file[filename] = per_file.get(filename, {})
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lines_hit[lineno] = self.counts[(filename, lineno)]
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# accumulate summary info, if needed
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sums = {}
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for filename, count in per_file.iteritems():
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# skip some "files" we don't care about...
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if filename == "<string>":
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continue
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if filename.endswith(".pyc") or filename.endswith(".pyo"):
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filename = filename[:-1]
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if coverdir is None:
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dir = os.path.dirname(os.path.abspath(filename))
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modulename = modname(filename)
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else:
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dir = coverdir
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if not os.path.exists(dir):
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os.makedirs(dir)
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modulename = fullmodname(filename)
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# If desired, get a list of the line numbers which represent
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# executable content (returned as a dict for better lookup speed)
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if show_missing:
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lnotab = find_executable_linenos(filename)
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else:
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lnotab = {}
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source = linecache.getlines(filename)
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coverpath = os.path.join(dir, modulename + ".cover")
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n_hits, n_lines = self.write_results_file(coverpath, source,
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lnotab, count)
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if summary and n_lines:
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percent = int(100 * n_hits / n_lines)
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sums[modulename] = n_lines, percent, modulename, filename
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if summary and sums:
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mods = sums.keys()
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mods.sort()
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print "lines cov% module (path)"
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for m in mods:
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n_lines, percent, modulename, filename = sums[m]
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print "%5d %3d%% %s (%s)" % sums[m]
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if self.outfile:
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# try and store counts and module info into self.outfile
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try:
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pickle.dump((self.counts, self.calledfuncs, self.callers),
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open(self.outfile, 'wb'), 1)
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except IOError, err:
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print >> sys.stderr, "Can't save counts files because %s" % err
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def write_results_file(self, path, lines, lnotab, lines_hit):
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"""Return a coverage results file in path."""
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try:
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outfile = open(path, "w")
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except IOError, err:
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print >> sys.stderr, ("trace: Could not open %r for writing: %s"
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"- skipping" % (path, err))
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return 0, 0
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n_lines = 0
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n_hits = 0
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for i, line in enumerate(lines):
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lineno = i + 1
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# do the blank/comment match to try to mark more lines
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# (help the reader find stuff that hasn't been covered)
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if lineno in lines_hit:
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outfile.write("%5d: " % lines_hit[lineno])
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n_hits += 1
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n_lines += 1
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elif rx_blank.match(line):
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outfile.write(" ")
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else:
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# lines preceded by no marks weren't hit
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# Highlight them if so indicated, unless the line contains
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# #pragma: NO COVER
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if lineno in lnotab and not PRAGMA_NOCOVER in lines[i]:
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outfile.write(">>>>>> ")
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n_lines += 1
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else:
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outfile.write(" ")
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outfile.write(lines[i].expandtabs(8))
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outfile.close()
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return n_hits, n_lines
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def find_lines_from_code(code, strs):
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"""Return dict where keys are lines in the line number table."""
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linenos = {}
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line_increments = [ord(c) for c in code.co_lnotab[1::2]]
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table_length = len(line_increments)
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docstring = False
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lineno = code.co_firstlineno
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for li in line_increments:
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lineno += li
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if lineno not in strs:
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linenos[lineno] = 1
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return linenos
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def find_lines(code, strs):
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"""Return lineno dict for all code objects reachable from code."""
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# get all of the lineno information from the code of this scope level
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linenos = find_lines_from_code(code, strs)
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# and check the constants for references to other code objects
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for c in code.co_consts:
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if isinstance(c, types.CodeType):
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# find another code object, so recurse into it
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linenos.update(find_lines(c, strs))
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return linenos
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def find_strings(filename):
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"""Return a dict of possible docstring positions.
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The dict maps line numbers to strings. There is an entry for
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line that contains only a string or a part of a triple-quoted
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string.
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"""
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d = {}
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# If the first token is a string, then it's the module docstring.
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# Add this special case so that the test in the loop passes.
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prev_ttype = token.INDENT
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f = open(filename)
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for ttype, tstr, start, end, line in tokenize.generate_tokens(f.readline):
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if ttype == token.STRING:
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if prev_ttype == token.INDENT:
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sline, scol = start
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eline, ecol = end
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for i in range(sline, eline + 1):
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d[i] = 1
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prev_ttype = ttype
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f.close()
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return d
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def find_executable_linenos(filename):
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"""Return dict where keys are line numbers in the line number table."""
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try:
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prog = open(filename, "rU").read()
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except IOError, err:
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print >> sys.stderr, ("Not printing coverage data for %r: %s"
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% (filename, err))
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return {}
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code = compile(prog, filename, "exec")
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strs = find_strings(filename)
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return find_lines(code, strs)
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class Trace:
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def __init__(self, count=1, trace=1, countfuncs=0, countcallers=0,
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ignoremods=(), ignoredirs=(), infile=None, outfile=None):
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"""
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@param count true iff it should count number of times each
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line is executed
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@param trace true iff it should print out each line that is
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being counted
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@param countfuncs true iff it should just output a list of
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(filename, modulename, funcname,) for functions
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that were called at least once; This overrides
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`count' and `trace'
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@param ignoremods a list of the names of modules to ignore
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@param ignoredirs a list of the names of directories to ignore
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all of the (recursive) contents of
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@param infile file from which to read stored counts to be
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added into the results
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@param outfile file in which to write the results
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"""
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self.infile = infile
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self.outfile = outfile
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self.ignore = Ignore(ignoremods, ignoredirs)
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self.counts = {} # keys are (filename, linenumber)
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self.blabbed = {} # for debugging
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self.pathtobasename = {} # for memoizing os.path.basename
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self.donothing = 0
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self.trace = trace
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self._calledfuncs = {}
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self._callers = {}
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self._caller_cache = {}
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if countcallers:
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self.globaltrace = self.globaltrace_trackcallers
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elif countfuncs:
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self.globaltrace = self.globaltrace_countfuncs
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elif trace and count:
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self.globaltrace = self.globaltrace_lt
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self.localtrace = self.localtrace_trace_and_count
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elif trace:
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self.globaltrace = self.globaltrace_lt
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self.localtrace = self.localtrace_trace
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elif count:
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self.globaltrace = self.globaltrace_lt
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self.localtrace = self.localtrace_count
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else:
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# Ahem -- do nothing? Okay.
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self.donothing = 1
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def run(self, cmd):
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import __main__
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dict = __main__.__dict__
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if not self.donothing:
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sys.settrace(self.globaltrace)
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threading.settrace(self.globaltrace)
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try:
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exec cmd in dict, dict
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finally:
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if not self.donothing:
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sys.settrace(None)
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threading.settrace(None)
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def runctx(self, cmd, globals=None, locals=None):
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if globals is None: globals = {}
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if locals is None: locals = {}
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if not self.donothing:
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sys.settrace(self.globaltrace)
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threading.settrace(self.globaltrace)
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try:
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exec cmd in globals, locals
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finally:
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if not self.donothing:
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sys.settrace(None)
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threading.settrace(None)
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def runfunc(self, func, *args, **kw):
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result = None
|
|
if not self.donothing:
|
|
sys.settrace(self.globaltrace)
|
|
try:
|
|
result = func(*args, **kw)
|
|
finally:
|
|
if not self.donothing:
|
|
sys.settrace(None)
|
|
return result
|
|
|
|
def file_module_function_of(self, frame):
|
|
code = frame.f_code
|
|
filename = code.co_filename
|
|
if filename:
|
|
modulename = modname(filename)
|
|
else:
|
|
modulename = None
|
|
|
|
funcname = code.co_name
|
|
clsname = None
|
|
if code in self._caller_cache:
|
|
if self._caller_cache[code] is not None:
|
|
clsname = self._caller_cache[code]
|
|
else:
|
|
self._caller_cache[code] = None
|
|
## use of gc.get_referrers() was suggested by Michael Hudson
|
|
# all functions which refer to this code object
|
|
funcs = [f for f in gc.get_referrers(code)
|
|
if hasattr(f, "func_doc")]
|
|
# require len(func) == 1 to avoid ambiguity caused by calls to
|
|
# new.function(): "In the face of ambiguity, refuse the
|
|
# temptation to guess."
|
|
if len(funcs) == 1:
|
|
dicts = [d for d in gc.get_referrers(funcs[0])
|
|
if isinstance(d, dict)]
|
|
if len(dicts) == 1:
|
|
classes = [c for c in gc.get_referrers(dicts[0])
|
|
if hasattr(c, "__bases__")]
|
|
if len(classes) == 1:
|
|
# ditto for new.classobj()
|
|
clsname = str(classes[0])
|
|
# cache the result - assumption is that new.* is
|
|
# not called later to disturb this relationship
|
|
# _caller_cache could be flushed if functions in
|
|
# the new module get called.
|
|
self._caller_cache[code] = clsname
|
|
if clsname is not None:
|
|
# final hack - module name shows up in str(cls), but we've already
|
|
# computed module name, so remove it
|
|
clsname = clsname.split(".")[1:]
|
|
clsname = ".".join(clsname)
|
|
funcname = "%s.%s" % (clsname, funcname)
|
|
|
|
return filename, modulename, funcname
|
|
|
|
def globaltrace_trackcallers(self, frame, why, arg):
|
|
"""Handler for call events.
|
|
|
|
Adds information about who called who to the self._callers dict.
|
|
"""
|
|
if why == 'call':
|
|
# XXX Should do a better job of identifying methods
|
|
this_func = self.file_module_function_of(frame)
|
|
parent_func = self.file_module_function_of(frame.f_back)
|
|
self._callers[(parent_func, this_func)] = 1
|
|
|
|
def globaltrace_countfuncs(self, frame, why, arg):
|
|
"""Handler for call events.
|
|
|
|
Adds (filename, modulename, funcname) to the self._calledfuncs dict.
|
|
"""
|
|
if why == 'call':
|
|
this_func = self.file_module_function_of(frame)
|
|
self._calledfuncs[this_func] = 1
|
|
|
|
def globaltrace_lt(self, frame, why, arg):
|
|
"""Handler for call events.
|
|
|
|
If the code block being entered is to be ignored, returns `None',
|
|
else returns self.localtrace.
|
|
"""
|
|
if why == 'call':
|
|
code = frame.f_code
|
|
filename = code.co_filename
|
|
if filename:
|
|
# XXX modname() doesn't work right for packages, so
|
|
# the ignore support won't work right for packages
|
|
modulename = modname(filename)
|
|
if modulename is not None:
|
|
ignore_it = self.ignore.names(filename, modulename)
|
|
if not ignore_it:
|
|
if self.trace:
|
|
print (" --- modulename: %s, funcname: %s"
|
|
% (modulename, code.co_name))
|
|
return self.localtrace
|
|
else:
|
|
return None
|
|
|
|
def localtrace_trace_and_count(self, frame, why, arg):
|
|
if why == "line":
|
|
# record the file name and line number of every trace
|
|
filename = frame.f_code.co_filename
|
|
lineno = frame.f_lineno
|
|
key = filename, lineno
|
|
self.counts[key] = self.counts.get(key, 0) + 1
|
|
|
|
bname = os.path.basename(filename)
|
|
print "%s(%d): %s" % (bname, lineno,
|
|
linecache.getline(filename, lineno)),
|
|
return self.localtrace
|
|
|
|
def localtrace_trace(self, frame, why, arg):
|
|
if why == "line":
|
|
# record the file name and line number of every trace
|
|
filename = frame.f_code.co_filename
|
|
lineno = frame.f_lineno
|
|
|
|
bname = os.path.basename(filename)
|
|
print "%s(%d): %s" % (bname, lineno,
|
|
linecache.getline(filename, lineno)),
|
|
return self.localtrace
|
|
|
|
def localtrace_count(self, frame, why, arg):
|
|
if why == "line":
|
|
filename = frame.f_code.co_filename
|
|
lineno = frame.f_lineno
|
|
key = filename, lineno
|
|
self.counts[key] = self.counts.get(key, 0) + 1
|
|
return self.localtrace
|
|
|
|
def results(self):
|
|
return CoverageResults(self.counts, infile=self.infile,
|
|
outfile=self.outfile,
|
|
calledfuncs=self._calledfuncs,
|
|
callers=self._callers)
|
|
|
|
def _err_exit(msg):
|
|
sys.stderr.write("%s: %s\n" % (sys.argv[0], msg))
|
|
sys.exit(1)
|
|
|
|
def main(argv=None):
|
|
import getopt
|
|
|
|
if argv is None:
|
|
argv = sys.argv
|
|
try:
|
|
opts, prog_argv = getopt.getopt(argv[1:], "tcrRf:d:msC:lT",
|
|
["help", "version", "trace", "count",
|
|
"report", "no-report", "summary",
|
|
"file=", "missing",
|
|
"ignore-module=", "ignore-dir=",
|
|
"coverdir=", "listfuncs",
|
|
"trackcalls"])
|
|
|
|
except getopt.error, msg:
|
|
sys.stderr.write("%s: %s\n" % (sys.argv[0], msg))
|
|
sys.stderr.write("Try `%s --help' for more information\n"
|
|
% sys.argv[0])
|
|
sys.exit(1)
|
|
|
|
trace = 0
|
|
count = 0
|
|
report = 0
|
|
no_report = 0
|
|
counts_file = None
|
|
missing = 0
|
|
ignore_modules = []
|
|
ignore_dirs = []
|
|
coverdir = None
|
|
summary = 0
|
|
listfuncs = False
|
|
countcallers = False
|
|
|
|
for opt, val in opts:
|
|
if opt == "--help":
|
|
usage(sys.stdout)
|
|
sys.exit(0)
|
|
|
|
if opt == "--version":
|
|
sys.stdout.write("trace 2.0\n")
|
|
sys.exit(0)
|
|
|
|
if opt == "-T" or opt == "--trackcalls":
|
|
countcallers = True
|
|
continue
|
|
|
|
if opt == "-l" or opt == "--listfuncs":
|
|
listfuncs = True
|
|
continue
|
|
|
|
if opt == "-t" or opt == "--trace":
|
|
trace = 1
|
|
continue
|
|
|
|
if opt == "-c" or opt == "--count":
|
|
count = 1
|
|
continue
|
|
|
|
if opt == "-r" or opt == "--report":
|
|
report = 1
|
|
continue
|
|
|
|
if opt == "-R" or opt == "--no-report":
|
|
no_report = 1
|
|
continue
|
|
|
|
if opt == "-f" or opt == "--file":
|
|
counts_file = val
|
|
continue
|
|
|
|
if opt == "-m" or opt == "--missing":
|
|
missing = 1
|
|
continue
|
|
|
|
if opt == "-C" or opt == "--coverdir":
|
|
coverdir = val
|
|
continue
|
|
|
|
if opt == "-s" or opt == "--summary":
|
|
summary = 1
|
|
continue
|
|
|
|
if opt == "--ignore-module":
|
|
ignore_modules.append(val)
|
|
continue
|
|
|
|
if opt == "--ignore-dir":
|
|
for s in val.split(os.pathsep):
|
|
s = os.path.expandvars(s)
|
|
# should I also call expanduser? (after all, could use $HOME)
|
|
|
|
s = s.replace("$prefix",
|
|
os.path.join(sys.prefix, "lib",
|
|
"python" + sys.version[:3]))
|
|
s = s.replace("$exec_prefix",
|
|
os.path.join(sys.exec_prefix, "lib",
|
|
"python" + sys.version[:3]))
|
|
s = os.path.normpath(s)
|
|
ignore_dirs.append(s)
|
|
continue
|
|
|
|
assert 0, "Should never get here"
|
|
|
|
if listfuncs and (count or trace):
|
|
_err_exit("cannot specify both --listfuncs and (--trace or --count)")
|
|
|
|
if not (count or trace or report or listfuncs or countcallers):
|
|
_err_exit("must specify one of --trace, --count, --report, "
|
|
"--listfuncs, or --trackcalls")
|
|
|
|
if report and no_report:
|
|
_err_exit("cannot specify both --report and --no-report")
|
|
|
|
if report and not counts_file:
|
|
_err_exit("--report requires a --file")
|
|
|
|
if no_report and len(prog_argv) == 0:
|
|
_err_exit("missing name of file to run")
|
|
|
|
# everything is ready
|
|
if report:
|
|
results = CoverageResults(infile=counts_file, outfile=counts_file)
|
|
results.write_results(missing, summary=summary, coverdir=coverdir)
|
|
else:
|
|
sys.argv = prog_argv
|
|
progname = prog_argv[0]
|
|
sys.path[0] = os.path.split(progname)[0]
|
|
|
|
t = Trace(count, trace, countfuncs=listfuncs,
|
|
countcallers=countcallers, ignoremods=ignore_modules,
|
|
ignoredirs=ignore_dirs, infile=counts_file,
|
|
outfile=counts_file)
|
|
try:
|
|
t.run('execfile(%r)' % (progname,))
|
|
except IOError, err:
|
|
_err_exit("Cannot run file %r because: %s" % (sys.argv[0], err))
|
|
except SystemExit:
|
|
pass
|
|
|
|
results = t.results()
|
|
|
|
if not no_report:
|
|
results.write_results(missing, summary=summary, coverdir=coverdir)
|
|
|
|
if __name__=='__main__':
|
|
main()
|