AssignStatementAST.py revision 6657:ef5fae93a3b2
16145Snate@binkert.org# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 26145Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 36145Snate@binkert.org# All rights reserved. 46145Snate@binkert.org# 56145Snate@binkert.org# Redistribution and use in source and binary forms, with or without 66145Snate@binkert.org# modification, are permitted provided that the following conditions are 76145Snate@binkert.org# met: redistributions of source code must retain the above copyright 86145Snate@binkert.org# notice, this list of conditions and the following disclaimer; 96145Snate@binkert.org# redistributions in binary form must reproduce the above copyright 106145Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 116145Snate@binkert.org# documentation and/or other materials provided with the distribution; 126145Snate@binkert.org# neither the name of the copyright holders nor the names of its 136145Snate@binkert.org# contributors may be used to endorse or promote products derived from 146145Snate@binkert.org# this software without specific prior written permission. 156145Snate@binkert.org# 166145Snate@binkert.org# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176145Snate@binkert.org# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186145Snate@binkert.org# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196145Snate@binkert.org# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206145Snate@binkert.org# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216145Snate@binkert.org# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226145Snate@binkert.org# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236145Snate@binkert.org# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246145Snate@binkert.org# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256145Snate@binkert.org# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266145Snate@binkert.org# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276145Snate@binkert.org 286145Snate@binkert.orgfrom m5.util import code_formatter 296145Snate@binkert.org 307039Snate@binkert.orgfrom slicc.ast.StatementAST import StatementAST 317039Snate@binkert.org 327039Snate@binkert.orgclass AssignStatementAST(StatementAST): 336145Snate@binkert.org def __init__(self, slicc, lvalue, rvalue): 346145Snate@binkert.org super(AssignStatementAST, self).__init__(slicc) 357039Snate@binkert.org self.lvalue = lvalue 367039Snate@binkert.org self.rvalue = rvalue 376145Snate@binkert.org 387002Snate@binkert.org def __repr__(self): 397021Stushar@csail.mit.edu return "[AssignStatementAST: %r := %r]" % (self.lvalue, self.rvalue) 407002Snate@binkert.org 419465Snilay@cs.wisc.edu def generate(self, code, return_type): 426145Snate@binkert.org lcode = code_formatter() 437039Snate@binkert.org rcode = code_formatter() 447039Snate@binkert.org 457039Snate@binkert.org ltype = self.lvalue.generate(lcode) 469465Snilay@cs.wisc.edu rtype = self.rvalue.generate(rcode) 479230Snilay@cs.wisc.edu 487039Snate@binkert.org code("$lcode = $rcode;") 497039Snate@binkert.org 506145Snate@binkert.org if ltype != rtype: 517039Snate@binkert.org # FIXME - beckmann 527039Snate@binkert.org # the following if statement is a hack to allow NetDest 537039Snate@binkert.org # objects to be assigned to Sets this allows for the 546145Snate@binkert.org # previous NetworkMessage Destiantion 'Set class' to 557039Snate@binkert.org # migrate to the new NetworkMessage Destiantion 'NetDest 567039Snate@binkert.org # class' 577973Snilay@cs.wisc.edu if str(ltype) != "NetDest" and str(rtype) != "Set": 586145Snate@binkert.org self.error("Assignment type mismatch '%s' and '%s'", 599171Snilay@cs.wisc.edu ltype, rtype) 607039Snate@binkert.org