# Copyright 2012 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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#       with the distribution.
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import signal
import copy

from ..local import utils


class Output(object):

  def __init__(self, exit_code=0, timed_out=False, stdout=None, stderr=None,
               pid=None, duration=None):
    self.exit_code = exit_code
    self.timed_out = timed_out
    self.stdout = stdout
    self.stderr = stderr
    self.pid = pid
    self.duration = duration

  def without_text(self):
    """Returns copy of the output without stdout and stderr."""
    other = copy.copy(self)
    other.stdout = None
    other.stderr = None
    return other

  def HasCrashed(self):
    if utils.IsWindows():
      return 0x80000000 & self.exit_code and not (0x3FFFFF00 & self.exit_code)
    else:
      # Timed out tests will have exit_code -signal.SIGTERM.
      if self.timed_out:
        return False
      return (self.exit_code < 0 and
              self.exit_code != -signal.SIGABRT)

  def HasTimedOut(self):
    return self.timed_out

  def IsSuccess(self):
    return not self.HasCrashed() and not self.HasTimedOut()

  @property
  def exit_code_string(self):
    return "%d [%02X]" % (self.exit_code, self.exit_code & 0xffffffff)


class _NullOutput(Output):
  """Useful to signal that the binary has not been run."""
  def __init__(self):
    super(_NullOutput, self).__init__()


# Default instance of the _NullOutput class above.
NULL_OUTPUT = _NullOutput()