1// [The "BSD licence"]
2// Copyright (c) 2006-2007 Kay Roepke
3// All rights reserved.
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions
7// are met:
8// 1. Redistributions of source code must retain the above copyright
9//    notice, this list of conditions and the following disclaimer.
10// 2. Redistributions in binary form must reproduce the above copyright
11//    notice, this list of conditions and the following disclaimer in the
12//    documentation and/or other materials provided with the distribution.
13// 3. The name of the author may not be used to endorse or promote products
14//    derived from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
27#import "ANTLRDebugParser.h"
28
29
30@implementation ANTLRDebugParser
31
32- (id) initWithTokenStream:(id<ANTLRTokenStream>)theStream
33{
34	return [self initWithTokenStream:theStream debugListener:nil debuggerPort:-1];
35}
36
37- (id) initWithTokenStream:(id<ANTLRTokenStream>)theStream
38			  debuggerPort:(NSInteger)portNumber
39{
40	return [self initWithTokenStream:theStream debugListener:nil debuggerPort:portNumber];
41}
42
43- (id) initWithTokenStream:(id<ANTLRTokenStream>)theStream
44			 debugListener:(id<ANTLRDebugEventListener>)theDebugListener
45			  debuggerPort:(NSInteger)portNumber
46{
47	id<ANTLRDebugEventListener,NSObject> debugger = nil;
48	id<ANTLRTokenStream> tokenStream = nil;
49	if (theDebugListener) {
50		debugger = [(id<ANTLRDebugEventListener,NSObject>)theDebugListener retain];
51		debugger = theDebugListener;
52	} else {
53		debugger = [[ANTLRDebugEventProxy alloc] initWithGrammarName:[self grammarFileName] debuggerPort:portNumber];
54	}
55	if (theStream && ![theStream isKindOfClass:[ANTLRDebugTokenStream class]]) {
56		tokenStream = [[ANTLRDebugTokenStream alloc] initWithTokenStream:theStream debugListener:debugger];
57	} else {
58		tokenStream = [theStream retain];
59		tokenStream = theStream;
60	}
61	self = [super initWithTokenStream:tokenStream];
62	if (self) {
63		[self setDebugListener:debugger];
64		[debugger release];
65		[tokenStream release];
66		[debugListener waitForDebuggerConnection];
67	}
68	return self;
69}
70
71- (void) dealloc
72{
73    [self setDebugListener: nil];
74    [super dealloc];
75}
76
77- (id<ANTLRDebugEventListener>) debugListener
78{
79    return debugListener; 
80}
81
82- (void) setDebugListener: (id<ANTLRDebugEventListener>) aDebugListener
83{
84    if (debugListener != aDebugListener) {
85        [(id<ANTLRDebugEventListener,NSObject>)aDebugListener retain];
86        [(id<ANTLRDebugEventListener,NSObject>)debugListener release];
87        debugListener = aDebugListener;
88    }
89}
90
91#pragma mark -
92#pragma mark Overrides
93
94- (void) beginResync
95{
96	[debugListener beginResync];
97}
98
99- (void) endResync
100{
101	[debugListener endResync];
102}
103- (void)beginBacktracking:(NSInteger)level
104{
105	[debugListener beginBacktrack:level];
106}
107
108- (void)endBacktracking:(NSInteger)level wasSuccessful:(BOOL)successful
109{
110	[debugListener endBacktrack:level wasSuccessful:successful];
111}
112
113@end
114