ObjDeclAST.py revision 10308:8c0870dbae5c 
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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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, rvalue, pointer):
33        super(ObjDeclAST, self).__init__(slicc, pairs)
34
35        self.type_ast = type_ast
36        self.ident = ident
37        self.rvalue = rvalue
38        self.pointer = pointer
39
40    def __repr__(self):
41        return "[ObjDecl: %r]" % self.ident
42
43    def generate(self, parent = None):
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
50        if type.isBuffer and "ordered" not in self:
51            self.error("Buffer object decls require an 'ordered' attribute")
52
53        if "ordered" in self:
54            value = self["ordered"]
55
56            if value not in ("true", "false"):
57                self.error("The 'ordered' attribute is '%s' " + \
58                           "must be 'true' or 'false'.", value)
59
60        if "random" in self:
61            value = self["random"]
62            if value not in ("true", "false"):
63                self.error("The 'random' attribute is '%s' " + \
64                           "must be 'true' or 'false'.", value)
65
66        # FIXME : should all use accessors here to avoid public member
67        # variables
68        if self.ident == "version":
69            c_code = "m_version"
70        elif self.ident == "machineID":
71            c_code = "m_machineID"
72        elif self.ident == "clusterID":
73            c_code = "m_clusterID"
74        else:
75            c_code = "(*m_%s_ptr)" % (self.ident)
76
77        # check type if this is a initialization
78        init_code = ""
79        if self.rvalue:
80            rvalue_type,init_code = self.rvalue.inline(True)
81            if type != rvalue_type:
82                self.error("Initialization type mismatch '%s' and '%s'" % \
83                           (type, rvalue_type))
84
85        machine = self.symtab.state_machine
86
87        v = Var(self.symtab, self.ident, self.location, type, c_code,
88                self.pairs, machine)
89
90        # Add data member to the parent type
91        if parent:
92            if not parent.addDataMember(self.ident, type, self.pairs, init_code):
93                self.error("Duplicate data member: %s:%s" % (parent, self.ident))
94
95        elif machine:
96            machine.addObject(v)
97
98        else:
99            self.symtab.newSymbol(v)
100