FuncDeclAST.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.code_formatter import code_formatter 296657Snate@binkert.org 306657Snate@binkert.orgfrom slicc.ast.DeclAST import DeclAST 316657Snate@binkert.orgfrom slicc.symbols import Func, Type 326657Snate@binkert.org 336657Snate@binkert.orgclass FuncDeclAST(DeclAST): 346657Snate@binkert.org def __init__(self, slicc, return_type, ident, formals, pairs, statements): 356657Snate@binkert.org super(FuncDeclAST, self).__init__(slicc, pairs) 366657Snate@binkert.org 376657Snate@binkert.org self.return_type = return_type 386657Snate@binkert.org self.ident = ident 396657Snate@binkert.org self.formals = formals 406657Snate@binkert.org self.statements = statements 416657Snate@binkert.org 426657Snate@binkert.org def __repr__(self): 436657Snate@binkert.org return "[FuncDecl: %s]" % self.ident 446657Snate@binkert.org 456657Snate@binkert.org def files(self, hh, cc, parent=None): 466657Snate@binkert.org if "external" in self or self.statements is None: 476657Snate@binkert.org return 486657Snate@binkert.org 496657Snate@binkert.org if parent: 506657Snate@binkert.org ident = "%s_%s" % (parent, self.ident) 516657Snate@binkert.org else: 526657Snate@binkert.org ident = self.ident 536657Snate@binkert.org cc.add("%s.cc" % ident) 546657Snate@binkert.org 556657Snate@binkert.org def generate(self): 566657Snate@binkert.org types = [] 576657Snate@binkert.org params = [] 586657Snate@binkert.org void_type = self.symtab.find("void", Type) 596657Snate@binkert.org 606657Snate@binkert.org # Generate definition code 616657Snate@binkert.org self.symtab.pushFrame() 626657Snate@binkert.org 636657Snate@binkert.org # Lookup return type 646657Snate@binkert.org return_type = self.return_type.type 656657Snate@binkert.org 666657Snate@binkert.org # Generate function header 676657Snate@binkert.org for formal in self.formals: 686657Snate@binkert.org # Lookup parameter types 696657Snate@binkert.org type, ident = formal.generate() 706657Snate@binkert.org types.append(type) 716657Snate@binkert.org params.append(ident) 726657Snate@binkert.org 736657Snate@binkert.org body = code_formatter() 746657Snate@binkert.org if self.statements is None: 756657Snate@binkert.org self["external"] = "yes" 766657Snate@binkert.org else: 776657Snate@binkert.org rtype = self.statements.generate(body, return_type) 786657Snate@binkert.org 796657Snate@binkert.org self.symtab.popFrame() 806657Snate@binkert.org 816657Snate@binkert.org machine = self.state_machine 826657Snate@binkert.org func = Func(self.symtab, self.ident, self.location, return_type, 836657Snate@binkert.org types, params, str(body), self.pairs, machine) 846657Snate@binkert.org 856657Snate@binkert.org if machine is not None: 866657Snate@binkert.org machine.addFunc(func) 876657Snate@binkert.org else: 886657Snate@binkert.org self.symtab.newSymbol(func) 89