MemberExprAST.py revision 6657
16657Snate@binkert.org# Copyright (c) 1999-2008 Mark D. Hill and David A. Wood 26657Snate@binkert.org# Copyright (c) 2009 The Hewlett-Packard Development Company 36657Snate@binkert.org# All rights reserved. 46657Snate@binkert.org# 56657Snate@binkert.org# Redistribution and use in source and binary forms, with or without 66657Snate@binkert.org# modification, are permitted provided that the following conditions are 76657Snate@binkert.org# met: redistributions of source code must retain the above copyright 86657Snate@binkert.org# notice, this list of conditions and the following disclaimer; 96657Snate@binkert.org# redistributions in binary form must reproduce the above copyright 106657Snate@binkert.org# notice, this list of conditions and the following disclaimer in the 116657Snate@binkert.org# documentation and/or other materials provided with the distribution; 126657Snate@binkert.org# neither the name of the copyright holders nor the names of its 136657Snate@binkert.org# contributors may be used to endorse or promote products derived from 146657Snate@binkert.org# this software without specific prior written permission. 156657Snate@binkert.org# 166657Snate@binkert.org# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 176657Snate@binkert.org# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 186657Snate@binkert.org# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 196657Snate@binkert.org# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 206657Snate@binkert.org# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 216657Snate@binkert.org# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 226657Snate@binkert.org# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 236657Snate@binkert.org# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 246657Snate@binkert.org# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 256657Snate@binkert.org# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 266657Snate@binkert.org# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 276657Snate@binkert.org 286657Snate@binkert.orgfrom m5.util import code_formatter 296657Snate@binkert.org 306657Snate@binkert.orgfrom slicc.ast.ExprAST import ExprAST 316657Snate@binkert.org 326657Snate@binkert.orgclass MemberExprAST(ExprAST): 336657Snate@binkert.org def __init__(self, slicc, expr_ast, field): 346657Snate@binkert.org super(MemberExprAST, self).__init__(slicc) 356657Snate@binkert.org 366657Snate@binkert.org self.expr_ast = expr_ast 376657Snate@binkert.org self.field = field 386657Snate@binkert.org 396657Snate@binkert.org def __repr__(self): 406657Snate@binkert.org return "[MemberExprAST: %r.%r]" % (self.expr_ast, self.field) 416657Snate@binkert.org 426657Snate@binkert.org def generate(self, code): 436657Snate@binkert.org return_type, gcode = self.expr_ast.inline(True) 446657Snate@binkert.org fix = code.nofix() 456657Snate@binkert.org code("($gcode).m_${{self.field}}") 466657Snate@binkert.org code.fix(fix) 476657Snate@binkert.org 486657Snate@binkert.org # Verify that this is a valid field name for this type 496657Snate@binkert.org if self.field not in return_type.data_members: 506657Snate@binkert.org error("Invalid object field: " + 516657Snate@binkert.org "Type '%s' does not have data member %s" % \ 526657Snate@binkert.org (return_type, self.field)) 536657Snate@binkert.org 546657Snate@binkert.org # Return the type of the field 556657Snate@binkert.org return return_type.data_members[self.field].type 56