ObjDeclAST.py revision 9271:3859f5d4f2c6 
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
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 "hack" in self:
45            warning("'hack=' is now deprecated")
46
47        if "network" in self and "virtual_network" not in self:
48            self.error("Network queues require a 'virtual_network' attribute")
49
50        type = self.type_ast.type
51        if type.isBuffer and "ordered" not in self:
52            self.error("Buffer object decls require an 'ordered' attribute")
53
54        if "ordered" in self:
55            value = self["ordered"]
56
57            if value not in ("true", "false"):
58                self.error("The 'ordered' attribute is '%s' " + \
59                           "must be 'true' or 'false'.", value)
60
61        if "random" in self:
62            value = self["random"]
63            if value not in ("true", "false"):
64                self.error("The 'random' attribute is '%s' " + \
65                           "must be 'true' or 'false'.", value)
66
67        machine = self.symtab.state_machine
68
69        # FIXME : should all use accessors here to avoid public member
70        # variables
71        if self.ident == "version":
72            c_code = "m_version"
73        elif self.ident == "machineID":
74            c_code = "m_machineID"
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