1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
// [The "BSD licence"]
// Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#import "ANTLRParser.h"
@implementation ANTLRParser
+ (ANTLRParser *)newANTLRParser:(id<ANTLRTokenStream>)anInput
{
return [[ANTLRParser alloc] initWithTokenStream:anInput];
}
+ (ANTLRParser *)newANTLRParser:(id<ANTLRTokenStream>)anInput State:(ANTLRRecognizerSharedState *)aState
{
return [[ANTLRParser alloc] initWithTokenStream:anInput State:aState];
}
- (id) initWithTokenStream:(id<ANTLRTokenStream>)theStream
{
if ((self = [super init]) != nil) {
input = theStream;
}
return self;
}
- (id) initWithTokenStream:(id<ANTLRTokenStream>)theStream State:(ANTLRRecognizerSharedState *)aState
{
if ((self = [super initWithState:aState]) != nil) {
input = theStream;
}
return self;
}
- (void) reset
{
[super reset]; // reset all recognizer state variables
if ( input!=nil ) {
[input seek:0]; // rewind the input
}
}
- (void) dealloc
{
#ifdef DEBUG_DEALLOC
NSLog( @"called dealloc in ANTLRParser" );
#endif
[self setInput:nil];
[super dealloc];
}
//----------------------------------------------------------
// input
//----------------------------------------------------------
- (id<ANTLRTokenStream>) input
{
return input;
}
- (void) setInput: (id<ANTLRTokenStream>) anInput
{
if (input != anInput) {
if ( input ) [input release];
[anInput retain];
}
input = anInput;
}
- (id) getCurrentInputSymbol:(id<ANTLRTokenStream>)anInput
{
state.token = [input LT:1];
return state.token;
}
- (ANTLRCommonToken *)getMissingSymbol:(id<ANTLRTokenStream>)anInput
Exception:(ANTLRRecognitionException *)e
TType:(NSInteger)expectedTokenType
BitSet:(ANTLRBitSet *)follow
{
NSString *tokenText = nil;
if ( expectedTokenType == ANTLRTokenTypeEOF )
tokenText = @"<missing EOF>";
else
tokenText = [NSString stringWithFormat:@"<missing %@>\n",[[ANTLRBaseRecognizer getTokenNames] objectAtIndex:expectedTokenType]];
ANTLRCommonToken *t = [[ANTLRCommonToken newToken:expectedTokenType Text:tokenText] retain];
ANTLRCommonToken *current = [anInput LT:1];
if ( current.type == ANTLRTokenTypeEOF ) {
current = [anInput LT:-1];
}
t.line = current.line;
t.charPositionInLine = current.charPositionInLine;
t.channel = ANTLRTokenChannelDefault;
return t;
}
/** Set the token stream and reset the parser */
- (void) setTokenStream:(id<ANTLRTokenStream>)anInput
{
input = nil;
[self reset];
input = anInput;
}
- (id<ANTLRTokenStream>)getTokenStream
{
return input;
}
- (NSString *)getSourceName
{
return [input getSourceName];
}
- (void) traceIn:(NSString *)ruleName Index:(int)ruleIndex
{
[super traceIn:ruleName Index:ruleIndex Object:[input LT:1]];
}
- (void) traceOut:(NSString *)ruleName Index:(NSInteger) ruleIndex
{
[super traceOut:ruleName Index:ruleIndex Object:[input LT:1]];
}
@end
|
