ObjDeclAST.py revision 10005:8c2b0dc16ccd 
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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9# redistributions in binary form must reproduce the above copyright
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14# this software without specific prior written permission.
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 Var
30
31class ObjDeclAST(DeclAST):
32    def __init__(self, slicc, type_ast, ident, pairs):
33        super(ObjDeclAST, self).__init__(slicc, pairs)
34
35        self.type_ast = type_ast
36        self.ident = ident
37
38    def __repr__(self):
39        return "[ObjDecl: %r]" % self.ident
40
41    def generate(self):
42        machineComponentSym = False
43
44        if "network" in self and not ("virtual_network" in self or
45                                      "physical_network" in self) :
46            self.error("Network queues require a 'virtual_network' attribute")
47
48        type = self.type_ast.type
49        if type.isBuffer and "ordered" not in self:
50            self.error("Buffer object decls require an 'ordered' attribute")
51
52        if "ordered" in self:
53            value = self["ordered"]
54
55            if value not in ("true", "false"):
56                self.error("The 'ordered' attribute is '%s' " + \
57                           "must be 'true' or 'false'.", value)
58
59        if "random" in self:
60            value = self["random"]
61            if value not in ("true", "false"):
62                self.error("The 'random' attribute is '%s' " + \
63                           "must be 'true' or 'false'.", value)
64
65        machine = self.symtab.state_machine
66
67        # FIXME : should all use accessors here to avoid public member
68        # variables
69        if self.ident == "version":
70            c_code = "m_version"
71        elif self.ident == "machineID":
72            c_code = "m_machineID"
73        elif self.ident == "clusterID":
74            c_code = "m_clusterID"
75        elif machine:
76            c_code = "(*m_%s_%s_ptr)" % (machine.ident, self.ident)
77        else:
78            c_code = "(*m_%s_ptr)" % (self.ident)
79
80        v = Var(self.symtab, self.ident, self.location, type, c_code,
81                self.pairs, machine)
82
83        if machine:
84            machine.addObject(v)
85
86        self.symtab.newSymbol(v)
87
88        # used to cheat-- that is, access components in other machines
89        if machineComponentSym:
90            self.symtab.newMachComponentSym(v)
91