ActionDeclAST.py revision 6999
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 slicc.ast.DeclAST import DeclAST 296657Snate@binkert.orgfrom slicc.symbols import Action, Type, Var 306657Snate@binkert.org 316657Snate@binkert.orgclass ActionDeclAST(DeclAST): 326657Snate@binkert.org def __init__(self, slicc, ident, pairs, statement_list): 336657Snate@binkert.org super(ActionDeclAST, self).__init__(slicc, pairs) 346657Snate@binkert.org self.ident = ident 356657Snate@binkert.org self.statement_list = statement_list 366657Snate@binkert.org 376657Snate@binkert.org def __repr__(self): 386657Snate@binkert.org return "[ActionDecl: %r]" % (self.ident) 396657Snate@binkert.org 406657Snate@binkert.org def generate(self): 416657Snate@binkert.org resources = {} 426657Snate@binkert.org if self.statement_list: 436657Snate@binkert.org # Add new local vars 446657Snate@binkert.org self.symtab.pushFrame() 456657Snate@binkert.org 466657Snate@binkert.org addr_type = self.symtab.find("Address", Type) 476657Snate@binkert.org 486657Snate@binkert.org if addr_type is None: 496657Snate@binkert.org self.error("Type 'Address' not declared.") 506657Snate@binkert.org 516657Snate@binkert.org var = Var(self.symtab, "address", self.location, addr_type, 526657Snate@binkert.org "addr", self.pairs) 536657Snate@binkert.org self.symtab.newSymbol(var) 546657Snate@binkert.org 556657Snate@binkert.org # Do not allows returns in actions 566999Snate@binkert.org code = self.slicc.codeFormatter() 576657Snate@binkert.org self.statement_list.generate(code, None) 586657Snate@binkert.org self.pairs["c_code"] = str(code) 596657Snate@binkert.org 606657Snate@binkert.org self.statement_list.findResources(resources) 616657Snate@binkert.org 626657Snate@binkert.org self.symtab.popFrame() 636657Snate@binkert.org 646657Snate@binkert.org machine = self.symtab.state_machine 656657Snate@binkert.org if machine is None: 666657Snate@binkert.org self.error("Action declaration not part of a machine.") 676657Snate@binkert.org 686657Snate@binkert.org action = Action(self.symtab, self.ident, resources, self.location, 696657Snate@binkert.org self.pairs) 706657Snate@binkert.org machine.addAction(action) 71