1// 2// SymbolStack.m 3// ANTLR 4// 5// Created by Alan Condit on 6/9/10. 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#define SUCCESS (0) 33#define FAILURE (-1) 34 35#import "SymbolStack.h" 36#import "Tree.h" 37 38 39@implementation SymbolsScope 40 41+ (SymbolsScope *)newSymbolsScope 42{ 43 return( [[SymbolsScope alloc] init] ); 44} 45 46- (id)init 47{ 48 if ((self = [super init]) != nil) { 49 } 50 return (self); 51} 52 53@end 54 55/* 56 * Start of SymbolStack 57 */ 58@implementation SymbolStack 59 60+(SymbolStack *)newSymbolStack 61{ 62 return [[SymbolStack alloc] initWithLen:30]; 63} 64 65+(SymbolStack *)newSymbolStackWithLen:(NSInteger)cnt 66{ 67 return [[SymbolStack alloc] initWithLen:cnt]; 68} 69 70-(id)init 71{ 72 if ((self = [super init]) != nil) { 73 } 74 return( self ); 75} 76 77-(id)initWithLen:(NSInteger)cnt 78{ 79 if ((self = [super initWithLen:cnt]) != nil) { 80 } 81 return( self ); 82} 83 84-(void)dealloc 85{ 86#ifdef DEBUG_DEALLOC 87 NSLog( @"called dealloc in SymbolStack" ); 88#endif 89 [super dealloc]; 90} 91 92- (id) copyWithZone:(NSZone *)aZone 93{ 94 return [super copyWithZone:aZone]; 95} 96 97-(SymbolsScope *)getHashMapEntry:(NSInteger)idx 98{ 99 return( (SymbolsScope *)[super objectAtIndex:idx] ); 100} 101 102-(SymbolsScope **)getHashMap 103{ 104 return( (SymbolsScope **)ptrBuffer ); 105} 106 107-(SymbolsScope *) pop 108{ 109 return (SymbolsScope *)[super pop]; 110} 111 112- (void) insertObject:(SymbolsScope *)aRule atIndex:(NSInteger)idx 113{ 114 if ( aRule != ptrBuffer[idx] ) { 115 if ( ptrBuffer[idx] ) [ptrBuffer[idx] release]; 116 [aRule retain]; 117 } 118 ptrBuffer[idx] = aRule; 119} 120 121- (SymbolsScope *)objectAtIndex:(NSInteger)idx 122{ 123 return (SymbolsScope *)[super objectAtIndex:idx]; 124} 125 126@end 127