AssignStatementAST.py revision 6999
12068SN/A# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 22068SN/A# Copyright (c) 2009 The Hewlett-Packard Development Company 32068SN/A# All rights reserved. 42068SN/A# 52068SN/A# Redistribution and use in source and binary forms, with or without 62068SN/A# modification, are permitted provided that the following conditions are 72068SN/A# met: redistributions of source code must retain the above copyright 82068SN/A# notice, this list of conditions and the following disclaimer; 92068SN/A# redistributions in binary form must reproduce the above copyright 102068SN/A# notice, this list of conditions and the following disclaimer in the 112068SN/A# documentation and/or other materials provided with the distribution; 122068SN/A# neither the name of the copyright holders nor the names of its 132068SN/A# contributors may be used to endorse or promote products derived from 142068SN/A# this software without specific prior written permission. 152068SN/A# 162068SN/A# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 172068SN/A# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 182068SN/A# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 192068SN/A# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 202068SN/A# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 212068SN/A# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 222068SN/A# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 232068SN/A# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 242068SN/A# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 252068SN/A# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 262068SN/A# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 272068SN/A 282665Ssaidi@eecs.umich.edufrom slicc.ast.StatementAST import StatementAST 292665Ssaidi@eecs.umich.edu 302665Ssaidi@eecs.umich.educlass AssignStatementAST(StatementAST): 312068SN/A def __init__(self, slicc, lvalue, rvalue): 322649Ssaidi@eecs.umich.edu super(AssignStatementAST, self).__init__(slicc) 332649Ssaidi@eecs.umich.edu self.lvalue = lvalue 342649Ssaidi@eecs.umich.edu self.rvalue = rvalue 352649Ssaidi@eecs.umich.edu 362649Ssaidi@eecs.umich.edu def __repr__(self): 372068SN/A return "[AssignStatementAST: %r := %r]" % (self.lvalue, self.rvalue) 382068SN/A 392068SN/A def generate(self, code, return_type): 402068SN/A lcode = self.slicc.codeFormatter() 412068SN/A rcode = self.slicc.codeFormatter() 422068SN/A 432068SN/A ltype = self.lvalue.generate(lcode) 442068SN/A rtype = self.rvalue.generate(rcode) 452068SN/A 462068SN/A code("$lcode = $rcode;") 472068SN/A 482107SN/A if ltype != rtype: 492068SN/A # FIXME - beckmann 502107SN/A # the following if statement is a hack to allow NetDest 512068SN/A # objects to be assigned to Sets this allows for the 522068SN/A # previous NetworkMessage Destiantion 'Set class' to 532227SN/A # migrate to the new NetworkMessage Destiantion 'NetDest 542107SN/A # class' 552107SN/A if str(ltype) != "NetDest" and str(rtype) != "Set": 562068SN/A self.error("Assignment type mismatch '%s' and '%s'", 572068SN/A ltype, rtype) 582068SN/A