1 # Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
2 # Copyright (c) 2009 The Hewlett-Packard Development Company
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.
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.
28 from slicc
.ast
.StatementAST
import StatementAST
30 class AssignStatementAST(StatementAST
):
31 def __init__(self
, slicc
, lvalue
, rvalue
):
32 super(AssignStatementAST
, self
).__init
__(slicc
)
37 return "[AssignStatementAST: %r := %r]" % (self
.lvalue
, self
.rvalue
)
39 def generate(self
, code
, return_type
):
40 lcode
= self
.slicc
.codeFormatter()
41 rcode
= self
.slicc
.codeFormatter()
43 ltype
= self
.lvalue
.generate(lcode
)
44 rtype
= self
.rvalue
.generate(rcode
)
46 code("$lcode = $rcode;")
50 # the following if statement is a hack to allow NetDest
51 # objects to be assigned to Sets this allows for the
52 # previous NetworkMessage Destiantion 'Set class' to
53 # migrate to the new NetworkMessage Destiantion 'NetDest
55 if str(ltype
) != "NetDest" and str(rtype
) != "Set":
56 self
.error("Assignment type mismatch '%s' and '%s'",