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      1 //
      2 //  ANTLRTreeRuleReturnScope.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 "ANTLRTreeRuleReturnScope.h"
     33 
     34 
     35 @implementation ANTLRTreeRuleReturnScope
     36 @synthesize start;
     37 
     38 + (id) newReturnScope
     39 {
     40     return [[ANTLRTreeRuleReturnScope alloc] init];
     41 }
     42 
     43 - (id) init
     44 {
     45     self = [super init];
     46     return self;
     47 }
     48 
     49 - (void) dealloc
     50 {
     51 #ifdef DEBUG_DEALLOC
     52     NSLog( @"called dealloc in ANTLRTreeRuleReturnScope" );
     53 #endif
     54 	if ( start ) [start release];
     55 	[super dealloc];
     56 }
     57 
     58 - (ANTLRCommonTree *)getStart
     59 {
     60     return start;
     61 }	
     62 
     63 - (void)setStart:(ANTLRCommonTree *)aStart
     64 {
     65     if ( start != aStart ) {
     66         if ( start ) [start release];
     67         [aStart retain];
     68     }
     69     start = aStart;
     70 }	
     71 
     72 // create a copy, including the text if available
     73 // the input stream is *not* copied!
     74 - (id) copyWithZone:(NSZone *)theZone
     75 {
     76     ANTLRTreeRuleReturnScope *copy = [super copyWithZone:theZone];
     77     copy.start = start;
     78     return copy;
     79 }
     80 
     81 @end
     82