1//
2//  ANTLRUniqueIDMap.m
3//  ANTLR
4//
5//  Created by Alan Condit on 7/7/10.
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 "ANTLRUniqueIDMap.h"
33#import "ANTLRTree.h"
34
35@implementation ANTLRUniqueIDMap
36@synthesize lastHash;
37
38+(id)newANTLRUniqueIDMap
39{
40    ANTLRUniqueIDMap *aNewANTLRUniqueIDMap;
41
42    aNewANTLRUniqueIDMap = [[ANTLRUniqueIDMap alloc] init];
43	return( aNewANTLRUniqueIDMap );
44}
45
46+(id)newANTLRUniqueIDMapWithLen:(NSInteger)aBuffSize
47{
48    ANTLRUniqueIDMap *aNewANTLRUniqueIDMap;
49
50    aNewANTLRUniqueIDMap = [[ANTLRUniqueIDMap alloc] initWithLen:aBuffSize];
51	return( aNewANTLRUniqueIDMap );
52}
53
54-(id)init
55{
56    NSInteger idx;
57
58	if ((self = [super initWithLen:HASHSIZE]) != nil) {
59		fNext = nil;
60        for( idx = 0; idx < HASHSIZE; idx++ ) {
61            ptrBuffer[idx] = nil;
62        }
63	}
64    return( self );
65}
66
67-(id)initWithLen:(NSInteger)aBuffSize
68{
69	if ((self = [super initWithLen:aBuffSize]) != nil) {
70	}
71    return( self );
72}
73
74-(void)dealloc
75{
76#ifdef DEBUG_DEALLOC
77    NSLog( @"called dealloc in ANTLRUniqueIDMap" );
78#endif
79    ANTLRNodeMapElement *tmp, *rtmp;
80    NSInteger idx;
81
82    if ( self.fNext != nil ) {
83        for( idx = 0; idx < HASHSIZE; idx++ ) {
84            tmp = ptrBuffer[idx];
85            while ( tmp ) {
86                rtmp = tmp;
87                tmp = (ANTLRNodeMapElement *)tmp.fNext;
88                [rtmp release];
89            }
90        }
91    }
92	[super dealloc];
93}
94
95-(void)deleteANTLRUniqueIDMap:(ANTLRNodeMapElement *)np
96{
97    ANTLRNodeMapElement *tmp, *rtmp;
98    NSInteger idx;
99
100    if ( self.fNext != nil ) {
101        for( idx = 0; idx < HASHSIZE; idx++ ) {
102            tmp = ptrBuffer[idx];
103            while ( tmp ) {
104                rtmp = tmp;
105                tmp = tmp.fNext;
106                [rtmp release];
107            }
108        }
109    }
110}
111
112- (void)clear
113{
114    ANTLRNodeMapElement *tmp, *rtmp;
115    NSInteger idx;
116
117    for( idx = 0; idx < HASHSIZE; idx++ ) {
118        tmp = ptrBuffer[idx];
119        while ( tmp ) {
120            rtmp = tmp;
121            tmp = [tmp getfNext];
122            [rtmp release];
123        }
124        ptrBuffer[idx] = nil;
125    }
126}
127
128- (NSInteger)count
129{
130    id anElement;
131    NSInteger aCnt = 0;
132
133    for (int i = 0; i < BuffSize; i++) {
134        if ((anElement = ptrBuffer[i]) != nil) {
135            aCnt += (NSInteger)[anElement count];
136        }
137    }
138    return aCnt;
139}
140
141- (NSInteger)size
142{
143    return BuffSize;
144}
145
146-(void)delete_chain:(ANTLRNodeMapElement *)np
147{
148    if ( np.fNext != nil )
149		[self delete_chain:np.fNext];
150	[np release];
151}
152
153- (id)getNode:(id<ANTLRBaseTree>)aNode
154{
155    ANTLRNodeMapElement *np;
156    NSInteger idx;
157
158    idx = [(id<ANTLRBaseTree>)aNode type];
159    np = ptrBuffer[idx];
160    while ( np != nil ) {
161        if (np.node == aNode) {
162            return( np.index );
163        }
164        np = np.fNext;
165    }
166    return( nil );
167}
168
169- (void)putID:(id)anID Node:(id<ANTLRBaseTree>)aNode
170{
171    ANTLRNodeMapElement *np, *np1;
172    NSInteger idx;
173
174    idx = [(id<ANTLRBaseTree>)aNode type];
175    idx %= HASHSIZE;
176    np = [[ANTLRNodeMapElement newANTLRNodeMapElementWithIndex:anID Node:aNode] retain];
177    np1 = ptrBuffer[idx];
178    np.fNext = np1;
179    ptrBuffer[idx] = np;
180    return;
181}
182
183
184@end
185