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Diffstat (limited to 'src/mem/slicc/symbols/Transition.py')
-rw-r--r-- | src/mem/slicc/symbols/Transition.py | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/mem/slicc/symbols/Transition.py b/src/mem/slicc/symbols/Transition.py new file mode 100644 index 000000000..1bf09048a --- /dev/null +++ b/src/mem/slicc/symbols/Transition.py @@ -0,0 +1,61 @@ +# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood +# Copyright (c) 2009 The Hewlett-Packard Development Company +# 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.symbols.Symbol import Symbol + +class Transition(Symbol): + def __init__(self, table, machine, state, event, nextState, actions, + location, pairs): + ident = "%s|%s" % (state, event) + super(Transition, self).__init__(table, ident, location, pairs) + + self.state = machine.states[state] + self.event = machine.events[event] + self.nextState = machine.states[nextState] + self.actions = [ machine.actions[a] for a in actions ] + self.resources = {} + + for action in self.actions: + for var,value in action.resources.iteritems(): + if var.type.ident != "DNUCAStopTable": + num = int(value) + if var in self.resources: + num += int(value) + self.resources[var] = str(num) + else: + self.resources[var] = value + + def __repr__(self): + return "[Transition: (%r, %r) -> %r, %r]" % \ + (self.state, self.event, self.nextState, self.actions) + + def getActionShorthands(self): + assert self.actions + + return ''.join(a.short for a in self.actions) + +__all__ = [ "Transition" ] |