Remove NSFastEnumeration for the Tokenizer and subclass the NSEnumerator instead

Memory management tends to be a bit complex in this case, especially under ARC, hence the
change to prevent a headache

HTMLKit/HTMLTokenizer.h

@@ -17,14 +17,11 @@
 
 @class HTMLParser;
 
-@interface HTMLTokenizer : NSObject <NSFastEnumeration>
+@interface HTMLTokenizer : NSEnumerator
 
 @property (nonatomic, assign) HTMLTokenizerState state;
 @property (nonatomic, weak, readonly) HTMLParser *parser;
 
 - (instancetype)initWithString:(NSString *)string;
 
-- (HTMLToken *)nextToken;
-- (NSArray *)allTokens;
-
 @end

HTMLKit/HTMLTokenizer.m

@@ -45,6 +45,7 @@
 
 	BOOL _eof;
 }
+@property (nonatomic, weak) HTMLParser *parser;
 @end
 
 @implementation HTMLTokenizer
@@ -82,7 +83,7 @@
 
 #pragma mark - State Machine
 
-- (HTMLToken *)nextToken
+- (id)nextObject
 {
 	while (_eof == NO && _tokens.count == 0) {
 		[self read];
@@ -94,7 +95,7 @@
 	return nextToken;
 }
 
-- (NSArray *)allTokens
+- (NSArray *)allObjects
 {
 	while (_eof == NO) {
 		[self read];
@@ -126,27 +127,6 @@
 	[self switchToState:state];
 }
 
-#pragma mark - Fast Enumeration
-
-- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(__unsafe_unretained id [])buffer count:(NSUInteger)len
-{
-	if (state->state == 0) {
-		state->mutationsPtr = &state->extra[0];
-		state->state = 1;
-	}
-
-	HTMLToken *nextToken = [self nextToken];
-
-	if (nextToken == nil) {
-		return 0;
-	}
-
-	__unsafe_unretained const id *const_ptr = (__unsafe_unretained id *)(__bridge void *)nextToken;
-	state->itemsPtr = (__typeof__(state->itemsPtr))const_ptr;
-
-	return 1;
-}
-
 #pragma mark - Emits
 
 - (void)emitToken:(HTMLToken *)token

HTMLKitTests/HTMLTokenizerTests.m

@@ -57,7 +57,7 @@ static NSString * const TOKENIZER = @"tokenizer";
 			tokenizer.state = [state integerValue];
 
 			NSArray *expectedTokens = test.output;
-			NSArray *tokens = [tokenizer allTokens];
+			NSArray *tokens = [tokenizer allObjects];
 			XCTAssertEqualObjects(tokens, expectedTokens, @"%@", test.title);
 		}
 	}
@@ -145,7 +145,7 @@ static NSString * const TOKENIZER = @"tokenizer";
 
 		id token = nil;
 		do {
-			token = [tokenizer nextToken];
+			token = [tokenizer nextObject];
 		} while (token != nil);
     }];
 }