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"""Source file annotation for coverage.py"""
import os, re
from coverage.report import Reporter
class AnnotateReporter(Reporter):
def __init__(self, coverage, ignore_errors=False):
super(AnnotateReporter, self).__init__(coverage, ignore_errors)
self.directory = None
blank_re = re.compile(r"\s*(#|$)")
else_re = re.compile(r"\s*else\s*:\s*(#|$)")
def report(self, morfs, directory=None, omit_prefixes=None):
self.find_code_units(morfs, omit_prefixes)
self.directory = directory
if self.directory and not os.path.exists(self.directory):
os.makedirs(self.directory)
for cu in self.code_units:
try:
if not cu.relative:
continue
statements, excluded, missing, _ = self.coverage.analyze(cu)
self.annotate_file(cu, statements, excluded, missing)
except KeyboardInterrupt:
raise
except:
if not self.ignore_errors:
raise
def annotate_file(self, cu, statements, excluded, missing):
"""Annotate a single file.
`cu` is the CodeUnit for the file to annotate.
"""
filename = cu.filename
source = open(filename, 'r')
if self.directory:
dest_file = os.path.join(self.directory, cu.flat_rootname()) + ".py"
else:
dest_file = filename
dest_file += ",cover"
dest = open(dest_file, 'w')
lineno = 0
i = 0
j = 0
covered = True
while True:
line = source.readline()
if line == '':
break
lineno += 1
while i < len(statements) and statements[i] < lineno:
i += 1
while j < len(missing) and missing[j] < lineno:
j += 1
if i < len(statements) and statements[i] == lineno:
covered = j >= len(missing) or missing[j] > lineno
if self.blank_re.match(line):
dest.write(' ')
elif self.else_re.match(line):
# Special logic for lines containing only 'else:'.
if i >= len(statements) and j >= len(missing):
dest.write('! ')
elif i >= len(statements) or j >= len(missing):
dest.write('> ')
elif statements[i] == missing[j]:
dest.write('! ')
else:
dest.write('> ')
elif lineno in excluded:
dest.write('- ')
elif covered:
dest.write('> ')
else:
dest.write('! ')
dest.write(line)
source.close()
dest.close()
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