1 files changed, 140 insertions, 0 deletions
diff --git a/runtime/ObjC/Framework/ANTLRUnbufferedCommonTreeNodeStreamState.m b/runtime/ObjC/Framework/ANTLRUnbufferedCommonTreeNodeStreamState.m
new file mode 100644
index 0000000..c46d28d
--- /dev/null
+++ b/runtime/ObjC/Framework/ANTLRUnbufferedCommonTreeNodeStreamState.m
@@ -0,0 +1,140 @@
+// [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 "ANTLRUnbufferedCommonTreeNodeStreamState.h"
+
+
+@implementation ANTLRUnbufferedCommonTreeNodeStreamState
+
+- (id) init
+{
+	if ((self = [super init]) != nil) {
+		lookahead = [[NSMutableArray alloc] init];
+	}
+	return self;
+}
+
+- (void) dealloc
+{
+	[self setLookahead:nil];
+	[self setCurrentNode:nil];
+	[self setPreviousNode:nil];
+	[super dealloc];
+}
+
+- (ANTLRCommonTree *) currentNode
+{
+    return currentNode; 
+}
+
+- (void) setCurrentNode: (ANTLRCommonTree *) aCurrentNode
+{
+    if (currentNode != aCurrentNode) {
+        [aCurrentNode retain];
+        [currentNode release];
+        currentNode = aCurrentNode;
+    }
+}
+
+- (ANTLRCommonTree *) previousNode
+{
+    return previousNode; 
+}
+
+- (void) setPreviousNode: (ANTLRCommonTree *) aPreviousNode
+{
+    if (previousNode != aPreviousNode) {
+        [aPreviousNode retain];
+        [previousNode release];
+        previousNode = aPreviousNode;
+    }
+}
+
+- (NSInteger) currentChildIndex
+{
+    return currentChildIndex;
+}
+
+- (void) setCurrentChildIndex: (NSInteger) aCurrentChildIndex
+{
+    currentChildIndex = aCurrentChildIndex;
+}
+
+- (NSInteger) absoluteNodeIndex
+{
+    return absoluteNodeIndex;
+}
+
+- (void) setAbsoluteNodeIndex: (NSInteger) anAbsoluteNodeIndex
+{
+    absoluteNodeIndex = anAbsoluteNodeIndex;
+}
+
+- (NSUInteger) nodeStackSize
+{
+    return nodeStackSize;
+}
+
+- (void) setNodeStackSize: (NSUInteger) aNodeStackSize
+{
+    nodeStackSize = aNodeStackSize;
+}
+
+- (NSUInteger) indexStackSize
+{
+    return indexStackSize;
+}
+
+- (void) setIndexStackSize: (NSUInteger) anIndexStackSize
+{
+    indexStackSize = anIndexStackSize;
+}
+
+- (NSMutableArray *) lookahead
+{
+    return lookahead; 
+}
+
+- (void) setLookahead: (NSMutableArray *) aLookahead
+{
+    if (lookahead != aLookahead) {
+        [aLookahead retain];
+        [lookahead release];
+        lookahead = aLookahead;
+    }
+}
+
+- (void) addToLookahead: (id)lookaheadObject
+{
+    [[self lookahead] addObject: lookaheadObject];
+}
+- (void) removeFromLookahead: (id)lookaheadObject
+{
+    [[self lookahead] removeObject: lookaheadObject];
+}
+
+
+@end