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;

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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 m5.util import code_formatter
29
30from slicc.ast.StatementAST import StatementAST
31
32class AssignStatementAST(StatementAST):
33 def __init__(self, slicc, lvalue, rvalue):
34 super(AssignStatementAST, self).__init__(slicc)
35 self.lvalue = lvalue
36 self.rvalue = rvalue
37
38 def __repr__(self):
39 return "[AssignStatementAST: %r := %r]" % (self.lvalue, self.rvalue)
40
41 def generate(self, code, return_type):
42 lcode = code_formatter()
43 rcode = code_formatter()
44
45 ltype = self.lvalue.generate(lcode)
46 rtype = self.rvalue.generate(rcode)
47
48 code("$lcode = $rcode;")
49
50 if ltype != rtype:
51 # FIXME - beckmann
52 # the following if statement is a hack to allow NetDest
53 # objects to be assigned to Sets this allows for the
54 # previous NetworkMessage Destiantion 'Set class' to
55 # migrate to the new NetworkMessage Destiantion 'NetDest
56 # class'
57 if str(ltype) != "NetDest" and str(rtype) != "Set":
58 self.error("Assignment type mismatch '%s' and '%s'",
59 ltype, rtype)