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,
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26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28from slicc.ast.DeclAST import DeclAST
29from slicc.ast.TypeAST import TypeAST
30from slicc.symbols import Var
31from slicc.symbols import Type
32
33class OutPortDeclAST(DeclAST):
34    def __init__(self, slicc, ident, msg_type, var_expr, pairs):
35        super(OutPortDeclAST, self).__init__(slicc, pairs)
36
37        self.ident = ident
38        self.msg_type = msg_type
39        self.var_expr = var_expr
40        self.queue_type = TypeAST(slicc, "OutPort")
41
42    def __repr__(self):
43        return "[OutPortDecl: %r]" % self.ident
44
45    def generate(self):
46        code = self.slicc.codeFormatter(newlines=False)
47
48        queue_type = self.var_expr.generate(code)
49        if not queue_type.isOutPort:
50            self.error("The outport queue's type must have the 'outport' " +
51                       "attribute.  Type '%s' does not have this attribute.",
52                       (queue_type))
53
54        if not self.symtab.find(self.msg_type.ident, Type):
55            self.error("The message type '%s' does not exist.",
56                       self.msg_type.ident)
57
58        var = Var(self.symtab, self.ident, self.location, self.queue_type.type,
59                  str(code), self.pairs)
60        self.symtab.newSymbol(var)
61