ObjDeclAST.py revision 10307:6df951dcd7d9 
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
10# notice, this list of conditions and the following disclaimer in the
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12# neither the name of the copyright holders nor the names of its
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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, rvalue):
33        super(ObjDeclAST, self).__init__(slicc, pairs)
34
35        self.type_ast = type_ast
36        self.ident = ident
37        self.rvalue = rvalue
38
39    def __repr__(self):
40        return "[ObjDecl: %r]" % self.ident
41
42    def generate(self, parent = None):
43        if "network" in self and not ("virtual_network" in self or
44                                      "physical_network" in self) :
45            self.error("Network queues require a 'virtual_network' attribute")
46
47        type = self.type_ast.type
48
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        # FIXME : should all use accessors here to avoid public member
66        # variables
67        if self.ident == "version":
68            c_code = "m_version"
69        elif self.ident == "machineID":
70            c_code = "m_machineID"
71        elif self.ident == "clusterID":
72            c_code = "m_clusterID"
73        else:
74            c_code = "(*m_%s_ptr)" % (self.ident)
75
76        # check type if this is a initialization
77        init_code = ""
78        if self.rvalue:
79            rvalue_type,init_code = self.rvalue.inline(True)
80            if type != rvalue_type:
81                self.error("Initialization type mismatch '%s' and '%s'" % \
82                           (type, rvalue_type))
83
84        machine = self.symtab.state_machine
85
86        v = Var(self.symtab, self.ident, self.location, type, c_code,
87                self.pairs, machine)
88
89        # Add data member to the parent type
90        if parent:
91            if not parent.addDataMember(self.ident, type, self.pairs, init_code):
92                self.error("Duplicate data member: %s:%s" % (parent, self.ident))
93
94        elif machine:
95            machine.addObject(v)
96
97        else:
98            self.symtab.newSymbol(v)
99