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      1 // [The "BSD licence"]
      2 // Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit
      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 "ANTLRRecognitionException.h"
     28 #import "ANTLRTokenStream.h"
     29 #import "ANTLRTreeNodeStream.h"
     30 
     31 @implementation ANTLRRecognitionException
     32 
     33 @synthesize input;
     34 @synthesize token;
     35 @synthesize node;
     36 @synthesize line;
     37 @synthesize charPositionInLine;
     38 
     39 + (id) newException
     40 {
     41 	return [[ANTLRRecognitionException alloc] init];
     42 }
     43 
     44 + (id) newException:(id<ANTLRIntStream>) anInputStream
     45 {
     46 	return [[ANTLRRecognitionException alloc] initWithStream:anInputStream];
     47 }
     48 
     49 + (id) newException:(id<ANTLRIntStream>) anInputStream reason:(NSString *)aReason
     50 {
     51 	return [[ANTLRRecognitionException alloc] initWithStream:anInputStream reason:aReason];
     52 }
     53 
     54 - (id) init
     55 {
     56 	self = [super initWithName:@"Recognition Exception" reason:@"Recognition Exception" userInfo:nil];
     57 	if ( self != nil ) {
     58 	}
     59 	return self;
     60 }
     61 
     62 - (id) initWithStream:(id<ANTLRIntStream>)anInputStream reason:(NSString *)aReason
     63 {
     64 	self = [super initWithName:NSStringFromClass([self class]) reason:aReason userInfo:nil];
     65 	if ( self != nil ) {
     66 		[self setStream:anInputStream];
     67 		index = input.index;
     68 		
     69 		Class inputClass = [input class];
     70 		if ([inputClass conformsToProtocol:@protocol(ANTLRTokenStream)]) {
     71 			[self setToken:[(id<ANTLRTokenStream>)input LT:1]];
     72 			line = token.line;
     73 			charPositionInLine = token.charPositionInLine;
     74 		} else if ([inputClass conformsToProtocol:@protocol(ANTLRCharStream)]) {
     75 			c = (unichar)[input LA:1];
     76 			line = ((id<ANTLRCharStream>)input).line;
     77 			charPositionInLine = ((id<ANTLRCharStream>)input).charPositionInLine;
     78 		} else if ([inputClass conformsToProtocol:@protocol(ANTLRTreeNodeStream)]) {
     79 			[self setNode:[(id<ANTLRTreeNodeStream>)input LT:1]];
     80 			line = [node line];
     81 			charPositionInLine = [node charPositionInLine];
     82 		} else {
     83 			c = (unichar)[input LA:1];
     84 		}
     85 	}
     86 	return self;
     87 }
     88 
     89 - (id) initWithStream:(id<ANTLRIntStream>)anInputStream
     90 {
     91 	self = [super initWithName:NSStringFromClass([self class]) reason:@"Runtime Exception" userInfo:nil];
     92 	if ( self != nil ) {
     93 	}
     94 	return self;
     95 }
     96 
     97 - (id) initWithName:(NSString *)aName reason:(NSString *)aReason userInfo:(NSDictionary *)aUserInfo
     98 {
     99 	self = [super initWithName:aName reason:aReason userInfo:aUserInfo];
    100 	if ( self != nil ) {
    101     }
    102     return self;
    103 }
    104 
    105 - (void) dealloc
    106 {
    107 #ifdef DEBUG_DEALLOC
    108     NSLog( @"called dealloc in ANTLRRecognitionException" );
    109 #endif
    110 	if ( input ) [input release];
    111 	if ( token ) [token release];
    112 	if ( node ) [node release];
    113 	[super dealloc];
    114 }
    115 
    116 - (NSInteger) unexpectedType
    117 {
    118 	if (token) {
    119 		return token.type;
    120     } else if (node) {
    121         return [node type];
    122 	} else {
    123 		return c;
    124 	}
    125 }
    126 
    127 - (id<ANTLRToken>)getUnexpectedToken
    128 {
    129     return token;
    130 }
    131 
    132 - (NSString *) description
    133 {
    134 	//NSMutableString *desc = [[NSMutableString alloc] initWithString:NSStringFromClass([self class])];
    135 	NSMutableString *desc = [NSMutableString stringWithString:[self className]];
    136 	if (token) {
    137 		[desc appendFormat:@" token:%@", token];
    138 	} else if (node) {
    139 		[desc appendFormat:@" node:%@", node];
    140 	} else {
    141 		[desc appendFormat:@" char:%c", c];
    142 	}
    143 	[desc appendFormat:@" line:%d position:%d", line, charPositionInLine];
    144 	return desc;
    145 }
    146 
    147 //---------------------------------------------------------- 
    148 //  input 
    149 //---------------------------------------------------------- 
    150 - (id<ANTLRIntStream>) getStream
    151 {
    152     return input; 
    153 }
    154 
    155 - (void) setStream: (id<ANTLRIntStream>) aStream
    156 {
    157     if ( input != aStream ) {
    158         if ( input ) [input release];
    159         if ( aStream ) [aStream retain];
    160         input = aStream;
    161     }
    162 }
    163 
    164 //---------------------------------------------------------- 
    165 //  token 
    166 //---------------------------------------------------------- 
    167 - (id<ANTLRToken>) getToken
    168 {
    169     return token; 
    170 }
    171 
    172 - (void) setToken: (id<ANTLRToken>) aToken
    173 {
    174     if (token != aToken) {
    175         if ( token ) [token release];
    176         if ( aToken ) [aToken retain];
    177         token = aToken;
    178     }
    179 }
    180 
    181 //---------------------------------------------------------- 
    182 //  node 
    183 //---------------------------------------------------------- 
    184 - (id<ANTLRBaseTree>) getNode
    185 {
    186     return node; 
    187 }
    188 
    189 - (void) setNode: (id<ANTLRBaseTree>) aNode
    190 {
    191     if (node != aNode) {
    192         if ( node ) [node release];
    193         if ( aNode ) [aNode retain];
    194         node = aNode;
    195     }
    196 }
    197 
    198 - (NSString *)getMessage
    199 {
    200     return @"Fix getMessage in ANTLRRecognitionException";
    201 }
    202 
    203 - (NSUInteger)charPositionInLine
    204 {
    205     return charPositionInLine;
    206 }
    207 
    208 - (void)setCharPositionInLine:(NSUInteger)aPos
    209 {
    210     charPositionInLine = aPos;
    211 }
    212 
    213 @synthesize index;
    214 @synthesize c;
    215 @end
    216