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			751 lines
		
	
	
	
		
			29 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			751 lines
		
	
	
	
		
			29 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
# 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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  import sys
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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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  tracer = trace.Trace(ignoredirs=[sys.base_prefix, sys.base_exec_prefix,],
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                       trace=0, count=1)
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  # run the new command using the given tracer
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  tracer.run('main()')
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  # make a report, placing output in /tmp
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  r = tracer.results()
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  r.write_results(show_missing=True, coverdir="/tmp")
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"""
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__all__ = ['Trace', 'CoverageResults']
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import io
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import linecache
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import os
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import sys
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import sysconfig
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import token
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import tokenize
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import inspect
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import gc
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import dis
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import pickle
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from time import monotonic as _time
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import threading
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PRAGMA_NOCOVER = "#pragma NO COVER"
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class _Ignore:
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    def __init__(self, modules=None, dirs=None):
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        self._mods = set() if not modules else set(modules)
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        self._dirs = [] if not dirs else [os.path.normpath(d)
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                                          for d in dirs]
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        self._ignore = { '<string>': 1 }
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    def names(self, filename, modulename):
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        if modulename in self._ignore:
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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.
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        if modulename in self._mods:  # 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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        for mod in self._mods:
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            # Need to take some care since ignoring
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            # "cmp" mustn't mean ignoring "cmpcache" but ignoring
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            # "Spam" must also mean ignoring "Spam.Eggs".
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            if modulename.startswith(mod + '.'):
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                self._ignore[modulename] = 1
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                return 1
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        # Now check that filename 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 path."""
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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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    comparepath = os.path.normcase(path)
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    longest = ""
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    for dir in sys.path:
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        dir = os.path.normcase(dir)
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        if comparepath.startswith(dir) and comparepath[len(dir)] == os.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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    # the drive letter is never part of the module name
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    drive, base = os.path.splitdrive(base)
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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.lstrip(".")
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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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                with open(self.infile, 'rb') as f:
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                    counts, calledfuncs, callers = pickle.load(f)
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                self.update(self.__class__(counts, calledfuncs, callers=callers))
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            except (OSError, EOFError, ValueError) as err:
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                print(("Skipping counts file %r: %s"
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                                      % (self.infile, err)), file=sys.stderr)
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    def is_ignored_filename(self, filename):
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        """Return True if the filename does not refer to a file
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        we want to have reported.
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        """
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        return filename.startswith('<') and filename.endswith('>')
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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:
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            counts[key] = counts.get(key, 0) + other_counts[key]
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        for key in other_calledfuncs:
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            calledfuncs[key] = 1
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        for key in other_callers:
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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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                      ignore_missing_files=False):
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        """
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        Write the coverage results.
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        :param show_missing: Show lines that had no hits.
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        :param summary: Include coverage summary per module.
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        :param coverdir: If None, the results of each module are placed in its
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                         directory, otherwise it is included in the directory
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                         specified.
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        :param ignore_missing_files: If True, counts for files that no longer
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                         exist are silently ignored. Otherwise, a missing file
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                         will raise a FileNotFoundError.
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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
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            for filename, modulename, funcname in sorted(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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            lastfile = lastcfile = ""
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            for ((pfile, pmod, pfunc), (cfile, cmod, cfunc)) \
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                    in sorted(self.callers):
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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:
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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.items():
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            if self.is_ignored_filename(filename):
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                continue
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            if filename.endswith(".pyc"):
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                filename = filename[:-1]
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            if ignore_missing_files and not os.path.isfile(filename):
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                continue
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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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                os.makedirs(dir, exist_ok=True)
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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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            with open(filename, 'rb') as fp:
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                encoding, _ = tokenize.detect_encoding(fp.readline)
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            n_hits, n_lines = self.write_results_file(coverpath, source,
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                                                      lnotab, count, encoding)
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            if summary and n_lines:
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                sums[modulename] = n_lines, n_hits, modulename, filename
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        if summary and sums:
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            print("lines   cov%   module   (path)")
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            for m in sorted(sums):
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                n_lines, n_hits, modulename, filename = sums[m]
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                print(f"{n_lines:5d}   {n_hits/n_lines:.1%}   {modulename}   ({filename})")
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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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                with open(self.outfile, 'wb') as f:
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                    pickle.dump((self.counts, self.calledfuncs, self.callers),
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                                f, 1)
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            except OSError as err:
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                print("Can't save counts files because %s" % err, file=sys.stderr)
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    def write_results_file(self, path, lines, lnotab, lines_hit, encoding=None):
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        """Return a coverage results file in path."""
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        # ``lnotab`` is a dict of executable lines, or a line number "table"
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        try:
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            outfile = open(path, "w", encoding=encoding)
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        except OSError as err:
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            print(("trace: Could not open %r for writing: %s "
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                                  "- skipping" % (path, err)), file=sys.stderr)
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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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        with outfile:
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            for lineno, line in enumerate(lines, 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 lineno in lnotab and not PRAGMA_NOCOVER in line:
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                    # Highlight never-executed lines, unless the line contains
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                    # #pragma: NO COVER
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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(line.expandtabs(8))
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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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    for _, lineno in dis.findlinestarts(code):
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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 inspect.iscode(c):
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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, encoding=None):
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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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    with open(filename, encoding=encoding) as f:
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        tok = tokenize.generate_tokens(f.readline)
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        for ttype, tstr, start, end, line in tok:
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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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    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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        with tokenize.open(filename) as f:
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            prog = f.read()
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            encoding = f.encoding
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    except OSError as err:
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        print(("Not printing coverage data for %r: %s"
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                              % (filename, err)), file=sys.stderr)
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        return {}
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    code = compile(prog, filename, "exec")
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    strs = _find_strings(filename, encoding)
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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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                 timing=False):
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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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        @param timing true iff timing information be displayed
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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.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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        self.start_time = None
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        if timing:
 | 
						|
            self.start_time = _time()
 | 
						|
        if countcallers:
 | 
						|
            self.globaltrace = self.globaltrace_trackcallers
 | 
						|
        elif countfuncs:
 | 
						|
            self.globaltrace = self.globaltrace_countfuncs
 | 
						|
        elif trace and count:
 | 
						|
            self.globaltrace = self.globaltrace_lt
 | 
						|
            self.localtrace = self.localtrace_trace_and_count
 | 
						|
        elif trace:
 | 
						|
            self.globaltrace = self.globaltrace_lt
 | 
						|
            self.localtrace = self.localtrace_trace
 | 
						|
        elif count:
 | 
						|
            self.globaltrace = self.globaltrace_lt
 | 
						|
            self.localtrace = self.localtrace_count
 | 
						|
        else:
 | 
						|
            # Ahem -- do nothing?  Okay.
 | 
						|
            self.donothing = 1
 | 
						|
 | 
						|
    def run(self, cmd):
 | 
						|
        import __main__
 | 
						|
        dict = __main__.__dict__
 | 
						|
        self.runctx(cmd, dict, dict)
 | 
						|
 | 
						|
    def runctx(self, cmd, globals=None, locals=None):
 | 
						|
        if globals is None: globals = {}
 | 
						|
        if locals is None: locals = {}
 | 
						|
        if not self.donothing:
 | 
						|
            threading.settrace(self.globaltrace)
 | 
						|
            sys.settrace(self.globaltrace)
 | 
						|
        try:
 | 
						|
            exec(cmd, globals, locals)
 | 
						|
        finally:
 | 
						|
            if not self.donothing:
 | 
						|
                sys.settrace(None)
 | 
						|
                threading.settrace(None)
 | 
						|
 | 
						|
    def runfunc(self, func, /, *args, **kw):
 | 
						|
        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 inspect.isfunction(f)]
 | 
						|
            # 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 = classes[0].__name__
 | 
						|
                        # 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:
 | 
						|
            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 = frame.f_globals.get('__file__', None)
 | 
						|
            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
 | 
						|
 | 
						|
            if self.start_time:
 | 
						|
                print('%.2f' % (_time() - self.start_time), end=' ')
 | 
						|
            bname = os.path.basename(filename)
 | 
						|
            line = linecache.getline(filename, lineno)
 | 
						|
            print("%s(%d)" % (bname, lineno), end='')
 | 
						|
            if line:
 | 
						|
                print(": ", line, end='')
 | 
						|
            else:
 | 
						|
                print()
 | 
						|
        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
 | 
						|
 | 
						|
            if self.start_time:
 | 
						|
                print('%.2f' % (_time() - self.start_time), end=' ')
 | 
						|
            bname = os.path.basename(filename)
 | 
						|
            line = linecache.getline(filename, lineno)
 | 
						|
            print("%s(%d)" % (bname, lineno), end='')
 | 
						|
            if line:
 | 
						|
                print(": ", line, end='')
 | 
						|
            else:
 | 
						|
                print()
 | 
						|
        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 main():
 | 
						|
    import argparse
 | 
						|
 | 
						|
    parser = argparse.ArgumentParser()
 | 
						|
    parser.add_argument('--version', action='version', version='trace 2.0')
 | 
						|
 | 
						|
    grp = parser.add_argument_group('Main options',
 | 
						|
            'One of these (or --report) must be given')
 | 
						|
 | 
						|
    grp.add_argument('-c', '--count', action='store_true',
 | 
						|
            help='Count the number of times each line is executed and write '
 | 
						|
                 'the counts to <module>.cover for each module executed, in '
 | 
						|
                 'the module\'s directory. See also --coverdir, --file, '
 | 
						|
                 '--no-report below.')
 | 
						|
    grp.add_argument('-t', '--trace', action='store_true',
 | 
						|
            help='Print each line to sys.stdout before it is executed')
 | 
						|
    grp.add_argument('-l', '--listfuncs', action='store_true',
 | 
						|
            help='Keep track of which functions are executed at least once '
 | 
						|
                 'and write the results to sys.stdout after the program exits. '
 | 
						|
                 'Cannot be specified alongside --trace or --count.')
 | 
						|
    grp.add_argument('-T', '--trackcalls', action='store_true',
 | 
						|
            help='Keep track of caller/called pairs and write the results to '
 | 
						|
                 'sys.stdout after the program exits.')
 | 
						|
 | 
						|
    grp = parser.add_argument_group('Modifiers')
 | 
						|
 | 
						|
    _grp = grp.add_mutually_exclusive_group()
 | 
						|
    _grp.add_argument('-r', '--report', action='store_true',
 | 
						|
            help='Generate a report from a counts file; does not execute any '
 | 
						|
                 'code. --file must specify the results file to read, which '
 | 
						|
                 'must have been created in a previous run with --count '
 | 
						|
                 '--file=FILE')
 | 
						|
    _grp.add_argument('-R', '--no-report', action='store_true',
 | 
						|
            help='Do not generate the coverage report files. '
 | 
						|
                 'Useful if you want to accumulate over several runs.')
 | 
						|
 | 
						|
    grp.add_argument('-f', '--file',
 | 
						|
            help='File to accumulate counts over several runs')
 | 
						|
    grp.add_argument('-C', '--coverdir',
 | 
						|
            help='Directory where the report files go. The coverage report '
 | 
						|
                 'for <package>.<module> will be written to file '
 | 
						|
                 '<dir>/<package>/<module>.cover')
 | 
						|
    grp.add_argument('-m', '--missing', action='store_true',
 | 
						|
            help='Annotate executable lines that were not executed with '
 | 
						|
                 '">>>>>> "')
 | 
						|
    grp.add_argument('-s', '--summary', action='store_true',
 | 
						|
            help='Write a brief summary for each file to sys.stdout. '
 | 
						|
                 'Can only be used with --count or --report')
 | 
						|
    grp.add_argument('-g', '--timing', action='store_true',
 | 
						|
            help='Prefix each line with the time since the program started. '
 | 
						|
                 'Only used while tracing')
 | 
						|
 | 
						|
    grp = parser.add_argument_group('Filters',
 | 
						|
            'Can be specified multiple times')
 | 
						|
    grp.add_argument('--ignore-module', action='append', default=[],
 | 
						|
            help='Ignore the given module(s) and its submodules '
 | 
						|
                 '(if it is a package). Accepts comma separated list of '
 | 
						|
                 'module names.')
 | 
						|
    grp.add_argument('--ignore-dir', action='append', default=[],
 | 
						|
            help='Ignore files in the given directory '
 | 
						|
                 '(multiple directories can be joined by os.pathsep).')
 | 
						|
 | 
						|
    parser.add_argument('--module', action='store_true', default=False,
 | 
						|
                        help='Trace a module. ')
 | 
						|
    parser.add_argument('progname', nargs='?',
 | 
						|
            help='file to run as main program')
 | 
						|
    parser.add_argument('arguments', nargs=argparse.REMAINDER,
 | 
						|
            help='arguments to the program')
 | 
						|
 | 
						|
    opts = parser.parse_args()
 | 
						|
 | 
						|
    if opts.ignore_dir:
 | 
						|
        _prefix = sysconfig.get_path("stdlib")
 | 
						|
        _exec_prefix = sysconfig.get_path("platstdlib")
 | 
						|
 | 
						|
    def parse_ignore_dir(s):
 | 
						|
        s = os.path.expanduser(os.path.expandvars(s))
 | 
						|
        s = s.replace('$prefix', _prefix).replace('$exec_prefix', _exec_prefix)
 | 
						|
        return os.path.normpath(s)
 | 
						|
 | 
						|
    opts.ignore_module = [mod.strip()
 | 
						|
                          for i in opts.ignore_module for mod in i.split(',')]
 | 
						|
    opts.ignore_dir = [parse_ignore_dir(s)
 | 
						|
                       for i in opts.ignore_dir for s in i.split(os.pathsep)]
 | 
						|
 | 
						|
    if opts.report:
 | 
						|
        if not opts.file:
 | 
						|
            parser.error('-r/--report requires -f/--file')
 | 
						|
        results = CoverageResults(infile=opts.file, outfile=opts.file)
 | 
						|
        return results.write_results(opts.missing, opts.summary, opts.coverdir)
 | 
						|
 | 
						|
    if not any([opts.trace, opts.count, opts.listfuncs, opts.trackcalls]):
 | 
						|
        parser.error('must specify one of --trace, --count, --report, '
 | 
						|
                     '--listfuncs, or --trackcalls')
 | 
						|
 | 
						|
    if opts.listfuncs and (opts.count or opts.trace):
 | 
						|
        parser.error('cannot specify both --listfuncs and (--trace or --count)')
 | 
						|
 | 
						|
    if opts.summary and not opts.count:
 | 
						|
        parser.error('--summary can only be used with --count or --report')
 | 
						|
 | 
						|
    if opts.progname is None:
 | 
						|
        parser.error('progname is missing: required with the main options')
 | 
						|
 | 
						|
    t = Trace(opts.count, opts.trace, countfuncs=opts.listfuncs,
 | 
						|
              countcallers=opts.trackcalls, ignoremods=opts.ignore_module,
 | 
						|
              ignoredirs=opts.ignore_dir, infile=opts.file,
 | 
						|
              outfile=opts.file, timing=opts.timing)
 | 
						|
    try:
 | 
						|
        if opts.module:
 | 
						|
            import runpy
 | 
						|
            module_name = opts.progname
 | 
						|
            mod_name, mod_spec, code = runpy._get_module_details(module_name)
 | 
						|
            sys.argv = [code.co_filename, *opts.arguments]
 | 
						|
            globs = {
 | 
						|
                '__name__': '__main__',
 | 
						|
                '__file__': code.co_filename,
 | 
						|
                '__package__': mod_spec.parent,
 | 
						|
                '__loader__': mod_spec.loader,
 | 
						|
                '__spec__': mod_spec,
 | 
						|
                '__cached__': None,
 | 
						|
            }
 | 
						|
        else:
 | 
						|
            sys.argv = [opts.progname, *opts.arguments]
 | 
						|
            sys.path[0] = os.path.dirname(opts.progname)
 | 
						|
 | 
						|
            with io.open_code(opts.progname) as fp:
 | 
						|
                code = compile(fp.read(), opts.progname, 'exec')
 | 
						|
            # try to emulate __main__ namespace as much as possible
 | 
						|
            globs = {
 | 
						|
                '__file__': opts.progname,
 | 
						|
                '__name__': '__main__',
 | 
						|
                '__package__': None,
 | 
						|
                '__cached__': None,
 | 
						|
            }
 | 
						|
        t.runctx(code, globs, globs)
 | 
						|
    except OSError as err:
 | 
						|
        sys.exit("Cannot run file %r because: %s" % (sys.argv[0], err))
 | 
						|
    except SystemExit:
 | 
						|
        pass
 | 
						|
 | 
						|
    results = t.results()
 | 
						|
 | 
						|
    if not opts.no_report:
 | 
						|
        results.write_results(opts.missing, opts.summary, opts.coverdir)
 | 
						|
 | 
						|
if __name__=='__main__':
 | 
						|
    main()
 |