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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0 # For details: https://github.com/nedbat/coveragepy/blob/master/NOTICE.txt """Source file annotation for coverage.py.""" import io import os import re from coverage.files import flat_rootname from coverage.misc import ensure_dir, isolate_module from coverage.report import get_analysis_to_report os = isolate_module(os) class AnnotateReporter(object): """Generate annotated source files showing line coverage. This reporter creates annotated copies of the measured source files. Each .py file is copied as a .py,cover file, with a left-hand margin annotating each line:: > def h(x): - if 0: #pragma: no cover - pass > if x == 1: ! a = 1 > else: > a = 2 > h(2) Executed lines use '>', lines not executed use '!', lines excluded from consideration use '-'. """ def __init__(self, coverage): self.coverage = coverage self.config = self.coverage.config self.directory = None blank_re = re.compile(r"\s*(#|$)") else_re = re.compile(r"\s*else\s*:\s*(#|$)") def report(self, morfs, directory=None): """Run the report. See `coverage.report()` for arguments. """ self.directory = directory self.coverage.get_data() for fr, analysis in get_analysis_to_report(self.coverage, morfs): self.annotate_file(fr, analysis) def annotate_file(self, fr, analysis): """Annotate a single file. `fr` is the FileReporter for the file to annotate. """ statements = sorted(analysis.statements) missing = sorted(analysis.missing) excluded = sorted(analysis.excluded) if self.directory: ensure_dir(self.directory) dest_file = os.path.join(self.directory, flat_rootname(fr.relative_filename())) if dest_file.endswith("_py"): dest_file = dest_file[:-3] + ".py" dest_file += ",cover" else: dest_file = fr.filename + ",cover" with io.open(dest_file, 'w', encoding='utf8') as dest: i = 0 j = 0 covered = True source = fr.source() for lineno, line in enumerate(source.splitlines(True), start=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(u' ') elif self.else_re.match(line): # Special logic for lines containing only 'else:'. if i >= len(statements) and j >= len(missing): dest.write(u'! ') elif i >= len(statements) or j >= len(missing): dest.write(u'> ') elif statements[i] == missing[j]: dest.write(u'! ') else: dest.write(u'> ') elif lineno in excluded: dest.write(u'- ') elif covered: dest.write(u'> ') else: dest.write(u'! ') dest.write(line)