antlrmismatchedtokenexception.m

antlr最新版本V3源代码

// [The "BSD licence"]
// Copyright (c) 2006-2007 Kay Roepke
// 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 "ANTLRMismatchedTokenException.h"


@implementation ANTLRMismatchedTokenException

+ (id) exceptionWithTokenType:(int) expectedTokenType stream:(id<ANTLRIntStream>) anInput
{
	return [[[self alloc] initWithTokenType:expectedTokenType stream:anInput] autorelease];
}

+ (id) exceptionWithCharacter:(unichar) expectedCharacter stream:(id<ANTLRIntStream>) input
{
	return [[[self alloc] initWithCharacter:expectedCharacter stream:input] autorelease];
}

-(id) initWithTokenType:(int) expectedTokenType stream:(id<ANTLRIntStream>) anInput
{
	if (nil != (self = [super initWithStream:anInput])) {
		expecting = expectedTokenType;
		isTokenType = YES;
	}
	return self;
}

- (id) initWithCharacter:(unichar) expectedCharacter stream:(id<ANTLRIntStream>) anInput
{
	if (nil != (self = [super initWithStream:anInput])) {
		expectingChar = expectedCharacter;
		isTokenType = NO;
	}
	return self;
}

- (NSString *) description
{
	NSMutableString *desc = (NSMutableString *)[super description];
	if (isTokenType) {
		[desc appendFormat:@" expected:%d got:%d", expecting, [self unexpectedType]];
	} else {
		[desc appendFormat:@" expected:%c got:%c", expectingChar, (unichar)[self unexpectedType]];
	}
	return desc;
}

@end