# Copyright 2008 the V8 project authors. All rights reserved.
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# modification, are permitted provided that the following conditions are
# met:
#
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#       notice, this list of conditions and the following disclaimer.
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#       copyright notice, this list of conditions and the following
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#       with the distribution.
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#       contributors may be used to endorse or promote products derived
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from collections import OrderedDict
import itertools
import os
import re

from testrunner.local import statusfile
from testrunner.local import testsuite
from testrunner.objects import testcase
from testrunner.outproc import base as outproc

FILES_PATTERN = re.compile(r"//\s+Files:(.*)")
ENV_PATTERN = re.compile(r"//\s+Environment Variables:(.*)")
SELF_SCRIPT_PATTERN = re.compile(r"//\s+Env: TEST_FILE_NAME")
MODULE_PATTERN = re.compile(r"^// MODULE$", flags=re.MULTILINE)
NO_HARNESS_PATTERN = re.compile(r"^// NO HARNESS$", flags=re.MULTILINE)


# Flags known to misbehave when combining arbitrary mjsunit tests. Can also
# be compiled regular expressions.
COMBINE_TESTS_FLAGS_BLACKLIST = [
  '--check-handle-count',
  '--enable-tracing',
  re.compile('--experimental.*'),
  '--expose-trigger-failure',
  re.compile('--harmony.*'),
  '--mock-arraybuffer-allocator',
  '--print-ast',
  re.compile('--trace.*'),
  '--wasm-lazy-compilation',
]

class TestSuite(testsuite.TestSuite):
  def ListTests(self):
    tests = []
    for dirname, dirs, files in os.walk(self.root, followlinks=True):
      for dotted in [x for x in dirs if x.startswith('.')]:
        dirs.remove(dotted)
      dirs.sort()
      files.sort()
      for filename in files:
        if (filename.endswith(".js") and
            filename != "mjsunit.js" and
            filename != "mjsunit_suppressions.js"):
          fullpath = os.path.join(dirname, filename)
          relpath = fullpath[len(self.root) + 1 : -3]
          testname = relpath.replace(os.path.sep, "/")
          test = self._create_test(testname)
          tests.append(test)
    return tests

  def _test_combiner_class(self):
    return TestCombiner

  def _test_class(self):
    return TestCase

  def _suppressed_test_class(self):
    return SuppressedTestCase


class TestCase(testcase.D8TestCase):
  def __init__(self, *args, **kwargs):
    super(TestCase, self).__init__(*args, **kwargs)

    source = self.get_source()

    files_list = []  # List of file names to append to command arguments.
    files_match = FILES_PATTERN.search(source);
    # Accept several lines of 'Files:'.
    while True:
      if files_match:
        files_list += files_match.group(1).strip().split()
        files_match = FILES_PATTERN.search(source, files_match.end())
      else:
        break
    files = [ os.path.normpath(os.path.join(self.suite.root, '..', '..', f))
              for f in files_list ]
    testfilename = os.path.join(self.suite.root,
                                self.path + self._get_suffix())
    if SELF_SCRIPT_PATTERN.search(source):
      files = (
        ["-e", "TEST_FILE_NAME=\"%s\"" % testfilename.replace("\\", "\\\\")] +
        files)

    if NO_HARNESS_PATTERN.search(source):
      mjsunit_files = []
    else:
      mjsunit_files = [os.path.join(self.suite.root, "mjsunit.js")]

    files_suffix = []
    if MODULE_PATTERN.search(source):
      files_suffix.append("--module")
    files_suffix.append(testfilename)

    self._source_files = files
    self._source_flags = self._parse_source_flags(source)
    self._mjsunit_files = mjsunit_files
    self._files_suffix = files_suffix
    self._env = self._parse_source_env(source)

  def _parse_source_env(self, source):