ANTLRSymbolStack.m revision 324c4644fee44b9898524c09511bd33c3f12e2df 
1//
2//  ANTLRSymbolStack.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 "ANTLRSymbolStack.h"
36#import "ANTLRTree.h"
37
38
39@implementation ANTLRSymbolsScope
40
41+ (ANTLRSymbolsScope *)newANTLRSymbolsScope
42{
43    return( [[ANTLRSymbolsScope 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 ANTLRSymbolStack
57 */
58@implementation ANTLRSymbolStack
59
60+(ANTLRSymbolStack *)newANTLRSymbolStack
61{
62    return [[ANTLRSymbolStack alloc] init];
63}
64
65+(ANTLRSymbolStack *)newANTLRSymbolStackWithLen:(NSInteger)cnt
66{
67    return [[ANTLRSymbolStack 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	[super dealloc];
87}
88
89- (id) copyWithZone:(NSZone *)aZone
90{
91    return [super copyWithZone:aZone];
92}
93
94-(ANTLRSymbolsScope *)getHashMapEntry:(NSInteger)idx
95{
96	return( (ANTLRSymbolsScope *)[super objectAtIndex:idx] );
97}
98
99-(ANTLRSymbolsScope **)getHashMap
100{
101	return( (ANTLRSymbolsScope **)ptrBuffer );
102}
103
104-(ANTLRSymbolsScope *) pop
105{
106    return (ANTLRSymbolsScope *)[super pop];
107}
108
109- (void) insertObject:(ANTLRSymbolsScope *)aRule atIndex:(NSInteger)idx
110{
111    if (aRule != ptrBuffer[idx]) {
112        if (ptrBuffer[idx] != nil) [ptrBuffer[idx] release];
113        [aRule retain];
114    }
115    ptrBuffer[idx] = aRule;
116}
117
118- (ANTLRSymbolsScope *)objectAtIndex:(NSInteger)idx
119{
120    return (ANTLRSymbolsScope *)[super objectAtIndex:idx];
121}
122
123@end
124