Adding cython v0.20.2 in third-party.

third_party/cython/src/Cython/Plex/Actions.py

+#=======================================================================
+#
+#   Python Lexical Analyser
+#
+#   Actions for use in token specifications
+#
+#=======================================================================
+
+class Action(object):
+
+  def perform(self, token_stream, text):
+    pass # abstract
+
+  def same_as(self, other):
+    return self is other
+
+
+class Return(Action):
+  """
+  Internal Plex action which causes |value| to
+  be returned as the value of the associated token
+  """
+
+  def __init__(self, value):
+    self.value = value
+
+  def perform(self, token_stream, text):
+    return self.value
+
+  def same_as(self, other):
+    return isinstance(other, Return) and self.value == other.value
+
+  def __repr__(self):
+    return "Return(%s)" % repr(self.value)
+
+
+class Call(Action):
+  """
+  Internal Plex action which causes a function to be called.
+  """
+
+  def __init__(self, function):
+    self.function = function
+
+  def perform(self, token_stream, text):
+    return self.function(token_stream, text)
+
+  def __repr__(self):
+    return "Call(%s)" % self.function.__name__
+
+  def same_as(self, other):
+    return isinstance(other, Call) and self.function is other.function
+
+
+class Begin(Action):
+  """
+  Begin(state_name) is a Plex action which causes the Scanner to
+  enter the state |state_name|. See the docstring of Plex.Lexicon
+  for more information.
+  """
+
+  def __init__(self, state_name):
+    self.state_name = state_name
+
+  def perform(self, token_stream, text):
+    token_stream.begin(self.state_name)
+
+  def __repr__(self):
+    return "Begin(%s)" % self.state_name
+
+  def same_as(self, other):
+    return isinstance(other, Begin) and self.state_name == other.state_name
+
+
+class Ignore(Action):
+  """
+  IGNORE is a Plex action which causes its associated token
+  to be ignored. See the docstring of Plex.Lexicon  for more
+  information.
+  """
+  def perform(self, token_stream, text):
+    return None
+
+  def __repr__(self):
+    return "IGNORE"
+
+IGNORE = Ignore()
+#IGNORE.__doc__ = Ignore.__doc__
+
+class Text(Action):
+  """
+  TEXT is a Plex action which causes the text of a token to
+  be returned as the value of the token. See the docstring of
+  Plex.Lexicon  for more information.
+  """
+
+  def perform(self, token_stream, text):
+    return text
+
+  def __repr__(self):
+    return "TEXT"
+
+TEXT = Text()
+#TEXT.__doc__ = Text.__doc__
+
+