src/mem/slicc/ast/TypeFieldEnumAST.py

   1 # Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
   2 # Copyright (c) 2009 The Hewlett-Packard Development Company
   3 # All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
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   8 # notice, this list of conditions and the following disclaimer;
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  10 # notice, this list of conditions and the following disclaimer in the
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  12 # neither the name of the copyright holders nor the names of its
  13 # contributors may be used to endorse or promote products derived from
  14 # this software without specific prior written permission.
  15 #
  16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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  20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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  26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27
  28 from slicc.ast.TypeFieldAST import TypeFieldAST
  29 from slicc.symbols import Event, State
  30
  31 class TypeFieldEnumAST(TypeFieldAST):
  32     def __init__(self, slicc, field_id, pairs_ast):
  33         super(TypeFieldEnumAST, self).__init__(slicc, pairs_ast)
  34
  35         self.field_id = field_id
  36         self.pairs_ast = pairs_ast
  37
  38     def __repr__(self):
  39         return "[TypeFieldEnum: %r]" % self.field_id
  40
  41     def generate(self, type):
  42         if str(type) == "State":
  43             self.error("States must in a State Declaration, not a normal enum.")
  44
  45         # Add enumeration
  46         if not type.enumAdd(self.field_id, self.pairs_ast.pairs):
  47             self.error("Duplicate enumeration: %s:%s" % (type, self.field_id))
  48
  49         # Fill machine info
  50         machine = self.symtab.state_machine
  51
  52         if str(type) == "Event":
  53             if not machine:
  54                 self.error("Event declaration not part of a machine.")
  55             e = Event(self.symtab, self.field_id, self.location, self.pairs)
  56             machine.addEvent(e)