2009-09-23 03:12:39 +02:00
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# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
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# Copyright (c) 2009 The Hewlett-Packard Development Company
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met: redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer;
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# redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution;
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# neither the name of the copyright holders nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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from slicc.symbols.Symbol import Symbol
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2015-07-20 16:15:18 +02:00
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from slicc.symbols.State import WildcardState
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2009-09-23 03:12:39 +02:00
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class Transition(Symbol):
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def __init__(self, table, machine, state, event, nextState, actions,
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2014-04-19 16:00:31 +02:00
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request_types, location):
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2009-09-23 03:12:39 +02:00
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ident = "%s|%s" % (state, event)
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2014-04-19 16:00:31 +02:00
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super(Transition, self).__init__(table, ident, location)
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2009-09-23 03:12:39 +02:00
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self.state = machine.states[state]
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self.event = machine.events[event]
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2015-07-20 16:15:18 +02:00
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if nextState == '*':
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# check to make sure there is a getNextState function declared
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found = False
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for func in machine.functions:
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2015-11-13 23:30:58 +01:00
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if func.c_ident == 'getNextState_Addr':
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2015-07-20 16:15:18 +02:00
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found = True
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break
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2016-02-07 02:21:20 +01:00
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if not found:
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2015-07-20 16:15:18 +02:00
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fatal("Machine uses a wildcard transition without getNextState defined")
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self.nextState = WildcardState(machine.symtab,
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'*', location)
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else:
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self.nextState = machine.states[nextState]
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2009-09-23 03:12:39 +02:00
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self.actions = [ machine.actions[a] for a in actions ]
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2012-07-11 07:51:54 +02:00
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self.request_types = [ machine.request_types[s] for s in request_types ]
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2009-09-23 03:12:39 +02:00
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self.resources = {}
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for action in self.actions:
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for var,value in action.resources.iteritems():
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2014-05-23 13:07:02 +02:00
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num = int(value)
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if var in self.resources:
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num += int(value)
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self.resources[var] = str(num)
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2009-09-23 03:12:39 +02:00
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def __repr__(self):
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return "[Transition: (%r, %r) -> %r, %r]" % \
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(self.state, self.event, self.nextState, self.actions)
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def getActionShorthands(self):
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assert self.actions
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return ''.join(a.short for a in self.actions)
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__all__ = [ "Transition" ]
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