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
