MachineAST.py revision 11283 
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.
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15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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27
28from slicc.ast.DeclAST import DeclAST
29from slicc.symbols import StateMachine, Type
30
31class MachineAST(DeclAST):
32    def __init__(self, slicc, mtype, pairs_ast, config_parameters, decls):
33        super(MachineAST, self).__init__(slicc, pairs_ast)
34
35        self.ident = mtype.value
36        self.pairs_ast = pairs_ast
37        self.config_parameters = config_parameters
38        self.decls = decls
39
40    def __repr__(self):
41        return "[Machine: %r]" % self.ident
42
43    def files(self, parent=None):
44        s = set(('%s_Controller.cc' % self.ident,
45                 '%s_Controller.hh' % self.ident,
46                 '%s_Controller.py' % self.ident,
47                 '%s_Transitions.cc' % self.ident,
48                 '%s_Wakeup.cc' % self.ident))
49
50        s |= self.decls.files(self.ident)
51        return s
52
53    def generate(self):
54        # Make a new frame
55        self.symtab.pushFrame()
56
57        # Create a new machine
58        machine = StateMachine(self.symtab, self.ident, self.location,
59                               self.pairs, self.config_parameters)
60
61        self.symtab.newCurrentMachine(machine)
62
63        # Generate code for all the internal decls
64        self.decls.generate()
65
66        # Build the transition table
67        machine.buildTable()
68
69        # Pop the frame
70        self.symtab.popFrame()
71
72    def findMachines(self):
73        mtype = self.ident
74        machine_type = self.symtab.find("MachineType", Type)
75        if not machine_type.checkEnum(mtype):
76            self.error("Duplicate machine name: %s:%s" % (machine_type, mtype))
77