# 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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import os
import re

from testrunner.local import testsuite
from testrunner.local import utils
from testrunner.objects import testcase
from testrunner.outproc import message


INVALID_FLAGS = ["--enable-slow-asserts"]
MODULE_PATTERN = re.compile(r"^// MODULE$", flags=re.MULTILINE)


class TestSuite(testsuite.TestSuite):
  def ListTests(self, context):
    tests = []
    for dirname, dirs, files in os.walk(self.root):
      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"):
          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_class(self):
    return TestCase

  def CreateLegacyVariantsGenerator(self, variants):
    return super(TestSuite, self).CreateLegacyVariantsGenerator(
        variants + ["preparser"])

  def create_variant_proc(self, variants):
    return super(TestSuite, self).create_variant_proc(variants + ['preparser'])


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

    source = self.get_source()
    self._source_files = self._parse_source_files(source)
    self._source_flags = self._parse_source_flags(source)

  def _parse_source_files(self, source):
    files = []
    if MODULE_PATTERN.search(source):
      files.append("--module")
    files.append(os.path.join(self.suite.root, self.path + ".js"))
    return files

  def _expected_fail(self):
    path = self.path
    while path:
      head, tail = os.path.split(path)
      if tail == 'fail':
        return True
      path = head
    return False

  def _get_cmd_params(self, ctx):
    params = super(TestCase, self)._get_cmd_params(ctx)
    return [p for p in params if p not in INVALID_FLAGS]

  def _get_files_params(self, ctx):
    return self._source_files

  def _get_source_flags(self):
    return self._source_flags

  def _get_source_path(self):
    return os.path.join(self.suite.root, self.path + self._get_suffix())

  @property
  def output_proc(self):
    return message.OutProc(self.expected_outcomes,
                           os.path.join(self.suite.root, self.path),
                           self._expected_fail())


def GetSuite(name, root):
  return TestSuite(name, root)