1// 2// ANTLRRuleReturnScope.m 3// ANTLR 4// 5// Created by Alan Condit on 6/17/10. 6// [The "BSD licence"] 7// Copyright (c) 2010 Alan Condit 8// All rights reserved. 9// 10// Redistribution and use in source and binary forms, with or without 11// modification, are permitted provided that the following conditions 12// are met: 13// 1. Redistributions of source code must retain the above copyright 14// notice, this list of conditions and the following disclaimer. 15// 2. Redistributions in binary form must reproduce the above copyright 16// notice, this list of conditions and the following disclaimer in the 17// documentation and/or other materials provided with the distribution. 18// 3. The name of the author may not be used to endorse or promote products 19// derived from this software without specific prior written permission. 20// 21// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 32#import "ANTLRRuleReturnScope.h" 33 34 35@implementation ANTLRRuleReturnScope 36 37/** Return the start token or tree */ 38- (id) getStart 39{ 40 return nil; 41} 42 43/** Return the stop token or tree */ 44- (id) getStop 45{ 46 return nil; 47} 48 49/** Has a value potentially if output=AST; */ 50- (id) getTree 51{ 52 return nil; 53} 54 55/** Has a value potentially if output=template; Don't use StringTemplate 56 * type as it then causes a dependency with ST lib. 57 */ 58- (id) getTemplate 59{ 60 return nil; 61} 62 63// create a copy, including the text if available 64// the input stream is *not* copied! 65- (id) copyWithZone:(NSZone *)theZone 66{ 67 ANTLRRuleReturnScope *copy = [[[self class] allocWithZone:theZone] init]; 68 return copy; 69} 70 71@end 72