コード例 #1
0
ファイル: TreeVisitor.cs プロジェクト: Fedorm/core-master
        /// <summary>
        /// Visit every node in tree t and trigger an action for each node
        /// before/after having visited all of its children.
        /// Execute both actions even if t has no children.
        /// If a child visit yields a new child, it can update its
        /// parent's child list or just return the new child.  The
        /// child update code works even if the child visit alters its parent
        /// and returns the new tree.
        ///
        /// Return result of applying post action to this node.
        /// </summary>
        public object Visit(object t, ITreeVisitorAction action)
        {
            bool isNil = adaptor.IsNil(t);

            if (action != null && !isNil)
            {
                t = action.Pre(t);     // if rewritten, walk children of new t
            }
            int n = adaptor.GetChildCount(t);

            for (int i = 0; i < n; i++)
            {
                object child           = adaptor.GetChild(t, i);
                object visitResult     = Visit(child, action);
                object childAfterVisit = adaptor.GetChild(t, i);
                if (visitResult != childAfterVisit)          // result & child differ?
                {
                    adaptor.SetChild(t, i, visitResult);
                }
            }
            if (action != null && !isNil)
            {
                t = action.Post(t);
            }
            return(t);
        }
コード例 #2
0
 /** <summary>
  *  Visit every node in tree t and trigger an action for each node
  *  before/after having visited all of its children.  Bottom up walk.
  *  Execute both actions even if t has no children.  Ignore return
  *  results from transforming children since they will have altered
  *  the child list of this node (their parent).  Return result of
  *  applying post action to this node.
  *  </summary>
  */
 public object Visit(object t, ITreeVisitorAction action)
 {
     // System.out.println("visit "+((Tree)t).toStringTree());
     bool isNil = adaptor.IsNil(t);
     if (action != null && !isNil)
     {
         t = action.Pre(t); // if rewritten, walk children of new t
     }
     for (int i = 0; i < adaptor.GetChildCount(t); i++)
     {
         object child = adaptor.GetChild(t, i);
         Visit(child, action);
     }
     if (action != null && !isNil)
         t = action.Post(t);
     return t;
 }
コード例 #3
0
ファイル: TreeVisitor.cs プロジェクト: ksmyth/antlr
		/// <summary>
		/// Visit every node in tree t and trigger an action for each node
	    /// before/after having visited all of its children.
	    /// Execute both actions even if t has no children.
	    /// If a child visit yields a new child, it can update its
	    /// parent's child list or just return the new child.  The
	    /// child update code works even if the child visit alters its parent
	    /// and returns the new tree.
	    /// 
	    /// Return result of applying post action to this node.
		/// </summary>
	    public object Visit(object t, ITreeVisitorAction action) {
	        bool isNil = adaptor.IsNil(t);
	        if ( action!=null && !isNil ) {
	            t = action.Pre(t); // if rewritten, walk children of new t
	        }
	        int n = adaptor.GetChildCount(t);
	        for (int i=0; i<n; i++) {
	            object child = adaptor.GetChild(t, i);
	            object visitResult = Visit(child, action);
	            object childAfterVisit = adaptor.GetChild(t, i);
	            if ( visitResult !=  childAfterVisit ) { // result & child differ?
	                adaptor.SetChild(t, i, visitResult);
	            }
	        }
	        if ( action!=null && !isNil ) t = action.Post(t);
	        return t;
	    }
コード例 #4
0
        public object Visit(object t, ITreeVisitorAction action)
        {
            bool flag = this.adaptor.IsNil(t);

            if (action != null && !flag)
            {
                t = action.Pre(t);
            }
            for (int i = 0; i < this.adaptor.GetChildCount(t); ++i)
            {
                this.Visit(this.adaptor.GetChild(t, i), action);
            }
            if (action != null && !flag)
            {
                t = action.Post(t);
            }
            return(t);
        }
コード例 #5
0
 public object Visit(object t, ITreeVisitorAction action)
 {
     bool flag = this.adaptor.IsNil(t);
     if ((action != null) && !flag)
     {
         t = action.Pre(t);
     }
     for (int i = 0; i < this.adaptor.GetChildCount(t); i++)
     {
         object child = this.adaptor.GetChild(t, i);
         this.Visit(child, action);
     }
     if ((action != null) && !flag)
     {
         t = action.Post(t);
     }
     return t;
 }
コード例 #6
0
        /** <summary>
         *  Visit every node in tree t and trigger an action for each node
         *  before/after having visited all of its children.  Bottom up walk.
         *  Execute both actions even if t has no children.  Ignore return
         *  results from transforming children since they will have altered
         *  the child list of this node (their parent).  Return result of
         *  applying post action to this node.
         *  </summary>
         */
        public object Visit(object t, ITreeVisitorAction action)
        {
            // System.out.println("visit "+((Tree)t).toStringTree());
            bool isNil = adaptor.IsNil(t);

            if (action != null && !isNil)
            {
                t = action.Pre(t); // if rewritten, walk children of new t
            }
            for (int i = 0; i < adaptor.GetChildCount(t); i++)
            {
                object child = adaptor.GetChild(t, i);
                Visit(child, action);
            }
            if (action != null && !isNil)
            {
                t = action.Post(t);
            }
            return(t);
        }
コード例 #7
0
ファイル: AntrRuntimeFixes.cs プロジェクト: rgatkinson/nadir
 public object Visit(object t, ITreeVisitorAction action)
     {
     // Do pre-visit action
     // 
     if (action != null && !adaptor.IsNil(t))
         {
         t = action.Pre(t); // if rewritten, walk children of new t
         }
     //
     // We snarf a copy of the children to walk so that the walking may modify
     // it in place
     //
     int n = adaptor.GetChildCount(t);
     if (n > 0)
         {
         ArrayList ourChildren = new ArrayList(n);
         for (int i = 0; i < n; i++)
             {
             ourChildren.Add(adaptor.GetChild(t, i));
             }
         //
         // Recurse!
         // 
         foreach (object child in ourChildren)
             {
             Visit(child, action);
             }
         }
     //
     // Do post-visit action
     // 
     if (action != null && !adaptor.IsNil(t))
         t = action.Post(t);
     //
     return t;
     }
コード例 #8
0
ファイル: AntrRuntimeFixes.cs プロジェクト: rgatkinson/nadir
 public void Visit(object t, ITreeVisitorAction action)
     {
     // Do pre-visit action
     // 
     if (action != null && !adaptor.IsNil(t))
         {
         action.Pre(t);
         }
     //
     int n = adaptor.GetChildCount(t);
     for (int i = 0; i < n; i++)
         {
         object child = adaptor.GetChild(t, i);
         Visit(child, action);
         }
     //
     // Do post-visit action
     // 
     if (action != null && !adaptor.IsNil(t))
         action.Post(t);
     }