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from __future__ import print_function
import functools
import itertools
import os
import os.path
import sys
from . import util
class GcovFile(object):
def __init__(self, src_file_name, cov_file_path, lines, properties):
"""
@param src_file_name Name of the source file.
@param cov_file_path Full path to the coverage file.
@param lines List of GcovLine objects.
@param properties Properties from the coverage file.
"""
self.src_file_name = src_file_name
self.cov_file_path = cov_file_path
self.lines = lines
self.properties = properties
@staticmethod
def parse_file(gcov, fname, process=None):
"""
Parse a file into a GcovFile object.
@param gcov Gcov object that tis file is a part of.
@param gname File name.
@param process Process name
"""
util.shell('gcov', [fname], wd=gcov.srcdir)
cov_file_path = os.path.join(gcov.srcdir, fname + '.gcov')
src_file_name = fname
if os.path.exists(cov_file_path):
with open(cov_file_path, 'r') as f:
lines, properties = GcovFile.parse_lines(f.readlines(), process)
return GcovFile(src_file_name, cov_file_path, lines, properties)
else:
return None
@staticmethod
def parse_lines(str_lines, process):
"""
Parse a string from a coverage file into a list of GcovLine objects.
@param str_lines Full text of a coverage file.
@param process Name of the process that executed the code.
"""
properties = dict()
lines = []
for line in str_lines:
if line[-1] == '\n':
line = line[0:-1]
pline = line.split(':')
pline = list(map(str.strip, pline[0:2])) + pline[2:]
if pline[1] == '0':
properties[pline[2]] = pline[3].strip()
elif pline[0][0] == '-':
lines.append(GcovLine(int(pline[1]), dict(), ':'.join(pline[2:])))
elif pline[0][0] == '#':
lines.append(GcovLine(int(pline[1]), {process : 0}, ':'.join(pline[2:])))
else:
lines.append(GcovLine(int(pline[1]), {process : int(pline[0])}, ':'.join(pline[2:])))
return lines, properties
@staticmethod
def union(left, right):
"""
Merge two different coverages of the same file into a single coverage object.
"""
return left | right
def __or__(self, right):
"""
Merge two different coverages of the same file into a single coverage object.
"""
new_file = self.clone()
new_file.merge(right)
return new_file
def __ior__(self, right):
"""
Merge two different coverages of the same file into a single coverage object.
"""
self.merge(right)
return self
def merge(self, other):
"""
Merge another coeverage into self.
"""
assert self.src_file_name == other.src_file_name
GcovLine.merge_lines(self.lines, other.lines)
self.properties.update(other.properties)
def clone(self):
"""
Create a shallow clone.
"""
return GcovFile(self.src_file_name, self.cov_file_path, list(self.lines), dict(self.properties))
class GcovLine(object):
def __init__(self, lineno, count_by_process, code):
"""
@param lineno Line number.
@param count_by_prcess A dictionary of execution counts by name of the process that executed them.
@param code Source code from this line.
"""
self.lineno = lineno
self.count_by_process = count_by_process
self.code = code
@staticmethod
def merge_lines(lines, other_lines):
"""
Merge lines from other_line into lines.
"""
for line, other_line in zip(lines, other_lines):
assert line.lineno == other_line.lineno
assert line.code == other_line.code
line.count_by_process.update(other_line.count_by_process)
def count(self):
"""
The total number of times this line was executed.
"""
runable_list = [l for l in self.count_by_process.values() if l is not None]
if len(runable_list) == 0:
return None
else:
return sum(runable_list)
def __repr__(self):
return str((self.lineno, self.count_by_process, self.code))
class Gcov(object):
def __init__(self, srcdir):
self.srcdir = srcdir
self.files = dict()
@staticmethod
def parse(srcdir, process=None):
gcov = Gcov(srcdir)
gcov._append(filter(lambda f: f is not None, map(functools.partial(GcovFile.parse_file, gcov, process=process),
util.filterext(['cc','c','cpp','h','hh'], os.listdir(srcdir)))))
return gcov
def _append(self, files):
for f in files:
if f.src_file_name in self.files:
self.files[f.src_file_name].merge(f)
else:
self.files[f.src_file_name] = f
def __or__(self, right):
new_cov = self.clone()
new_cov.merge(right)
return new_cov
def __ior__(self, right):
self.merge(right)
return self
@staticmethod
def union(left, right):
return left | right
def merge(self, other):
self._append(other.files.values())
def clone(self):
new_cov = Gcov(self.srcdir)
new_cov._append(iter(f.clone() for f in self.files.values()))
return new_cov
class GcovSet(object):
def __init__(self):
self.coverage_by_program = dict()
def addprogram(self, prog_name, src_dir):
self.coverage_by_program[prog_name] = Gcov(src_dir)
def addcoverage(self, prog_name, process_name):
cov = self.coverage_by_program[prog_name]
cov.merge(Gcov.parse(cov.srcdir, process_name))
#def unexecuted_lines(self):
# covlist = sorted(self.coverage_by_program.values(), key=lambda c: c.srcdir)
# for src, grp in itertools.groupby(covlist, lambda c: c.srcdir):
# files = functools.reduce(lambda a, c: a | c, grp).files.values()
# file_lines = iter((f.src_file_name, iter(l for l in f.lines if l.count() == 0)) for f in files)
# yield src, file_lines
#
#def pretty_print(self, outfile=sys.stdout, width=60, stats=['unexecuted', 'unexecuted.bysrc']):
# print('='*width, file=outfile)
# print(' CODE COVERAGE', file=outfile)
#
# if 'unexecuted' in stats:
# print('='*width, file=outfile)
# print(' unexecuted lines', file=outfile)
# if 'unexecuted.bysrc' in stats:
# for src, file_lines in self.unexecuted_lines():
# print((src + ':'), file=outfile)
# print('-'*width, file=outfile)
# for src_file_name, lines in file_lines:
# print(' ' + src_file_name + ':', file=outfile)
# for line in lines:
# print("{}:{}".format(str(line.lineno).rjust(5), line.code), file=outfile)
# #print('='*width, file=outfile)
# #print(prog, file=outfile)
# #print('-'*width, file=outfile)
def _get_coverage_by_file(self):
return functools.reduce(lambda a,b: a|b, self.coverage_by_program.values()).files
def _get_filenames(self):
return self.coverage_by_file.keys()
coverage_by_file = property(_get_coverage_by_file)
filenames = property(_get_filenames)
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