text: # Copyright (c) 2011 Advanced Micro Devices, Inc.
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are
  # met: redistributions of source code must retain the above copyright
  # notice, this list of conditions and the following disclaimer;
  # redistributions in binary form must reproduce the above copyright
  # notice, this list of conditions and the following disclaimer in the
  # documentation and/or other materials provided with the distribution;
  # neither the name of the copyright holders nor the names of its
  # contributors may be used to endorse or promote products derived from
  # this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  from slicc.ast.TypeFieldAST import TypeFieldAST
  from slicc.symbols import Event, State
  
  class TypeFieldStateAST(TypeFieldAST):
      def __init__(self, slicc, field_id, perm_ast, pairs_ast):
          super(TypeFieldStateAST, self).__init__(slicc, pairs_ast)
  
          self.field_id = field_id
          self.perm_ast = perm_ast
          if not (perm_ast.type_ast.ident == "AccessPermission"):
              self.error("AccessPermission enum value must be specified")
          self.pairs_ast = pairs_ast
  
      def __repr__(self):
          return "[TypeFieldState: %r]" % self.field_id
  
      def generate(self, type):
          if not str(type) == "State":
              self.error("State Declaration must be of type State.")
          
          # Add enumeration
          if not type.addEnum(self.field_id, self.pairs_ast.pairs):
              self.error("Duplicate enumeration: %s:%s" % (type, self.field_id))
  
          # Fill machine info
          machine = self.symtab.state_machine
  
          if not machine:
              self.error("State declaration not part of a machine.")
          s = State(self.symtab, self.field_id, self.location, self.pairs)
          machine.addState(s)
  
          type.statePermPairAdd(s, self.perm_ast.value)
  
  
  