MachineAST.py revision 6877 
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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27
28from slicc.ast.DeclAST import DeclAST
29from slicc.symbols import StateMachine, Type
30
31class MachineAST(DeclAST):
32    def __init__(self, slicc, ident, pairs_ast, config_parameters, decls):
33        super(MachineAST, self).__init__(slicc, pairs_ast)
34
35        self.ident = ident
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_Profiler.cc' % self.ident,
48                 '%s_Profiler.hh' % self.ident,
49                 '%s_Transitions.cc' % self.ident,
50                 '%s_Wakeup.cc' % self.ident))
51
52        s |= self.decls.files(self.ident)
53        return s
54
55    def generate(self):
56        # Make a new frame
57        self.symtab.pushFrame()
58
59        # Create a new machine
60        machine = StateMachine(self.symtab, self.ident, self.location,
61                               self.pairs, self.config_parameters)
62
63        self.symtab.newCurrentMachine(machine)
64
65        # Generate code for all the internal decls
66        self.decls.generate()
67
68        # Build the transition table
69        machine.buildTable()
70
71        # Pop the frame
72        self.symtab.popFrame()
73
74    def findMachines(self):
75        # Add to MachineType enumeration
76        machine_type = self.symtab.find("MachineType", Type)
77        if not machine_type.enumAdd(self.ident, self.pairs_ast.pairs):
78            self.error("Duplicate machine name: %s:%s" % (machine_type,
79                                                          self.ident))
80
81        # Generate code for all the internal decls
82        self.decls.findMachines()
83