1# Copyright 2018 the V8 project authors. All rights reserved.
2# Use of this source code is governed by a BSD-style license that can be
3# found in the LICENSE file.
4
5import itertools
6import os
7import re
8
9from . import base
10
11
12class OutProc(base.OutProc):
13  def __init__(self, expected_outcomes, basepath, expected_fail):
14    super(OutProc, self).__init__(expected_outcomes)
15    self._basepath = basepath
16    self._expected_fail = expected_fail
17
18  def _is_failure_output(self, output):
19    fail = output.exit_code != 0
20    if fail != self._expected_fail:
21      return True
22
23    expected_lines = []
24    # Can't use utils.ReadLinesFrom() here because it strips whitespace.
25    with open(self._basepath + '.out') as f:
26      for line in f:
27        if line.startswith("#") or not line.strip():
28          continue
29        expected_lines.append(line)
30    raw_lines = output.stdout.splitlines()
31    actual_lines = [ s for s in raw_lines if not self._ignore_line(s) ]
32    if len(expected_lines) != len(actual_lines):
33      return True
34
35    env = {
36      'basename': os.path.basename(self._basepath + '.js'),
37    }
38    for (expected, actual) in itertools.izip_longest(
39        expected_lines, actual_lines, fillvalue=''):
40      pattern = re.escape(expected.rstrip() % env)
41      pattern = pattern.replace('\\*', '.*')
42      pattern = pattern.replace('\\{NUMBER\\}', '\d+(?:\.\d*)?')
43      pattern = '^%s$' % pattern
44      if not re.match(pattern, actual):
45        return True
46    return False
47
48  def _ignore_line(self, string):
49    """Ignore empty lines, valgrind output, Android output."""
50    return (
51      not string or
52      not string.strip() or
53      string.startswith("==") or
54      string.startswith("**") or
55      string.startswith("ANDROID")
56    )
57