//
//  ANTLRTreeVisitorAction.m
//  ANTLR
//
//  Created by Alan Condit on 6/18/10.
// [The "BSD licence"]
// Copyright (c) 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 "ANTLRTreeVisitorAction.h"


@implementation ANTLRTreeVisitorAction

+ (ANTLRTreeVisitorAction *)newANTLRTreeVisitorAction
{
    return [[ANTLRTreeVisitorAction alloc] init];
}

- (id) init
{
    if ((self = [super init]) != nil ) {
    }
    return self;
}

/** Execute an action before visiting children of t.  Return t or
 *  a rewritten t.  It is up to the visitor to decide what to do
 *  with the return value.  Children of returned value will be
 *  visited if using TreeVisitor.visit().
 */
- (ANTLRTreeVisitorAction *)pre:(ANTLRTreeVisitorAction *) t
{
    return nil;
}

/** Execute an action after visiting children of t.  Return t or
 *  a rewritten t.  It is up to the visitor to decide what to do
 *  with the return value.
 */
- (ANTLRTreeVisitorAction *)post:(ANTLRTreeVisitorAction *) t
{
    return nil;
}


@end