1  /*
     2   * Copyright the original author or authors.
     3   * 
     4   * Licensed under the MOZILLA PUBLIC LICENSE, Version 1.1 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   * 
     8   *      http://www.mozilla.org/MPL/MPL-1.1.html
     9   * 
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  import org.as2lib.regexp.node.Node; 
    18  import org.as2lib.regexp.node.Single;
    19  import org.as2lib.regexp.node.TreeInfo;
    20  
    21  /**
    22   * {@code NotSingle} is a node class to match any character except a single 
    23   * character value.
    24   * 
    25   * @author Igor Sadovskiy
    26   */
    27   
    28  class org.as2lib.regexp.node.NotSingle extends Node {
    29  	
    30      private var ch:Number;
    31      
    32      public function NotSingle(n:Number) {
    33          ch = n;
    34      }
    35      
    36      public function dup(flag:Boolean):Node {
    37      	return (flag) ? new Single(ch) : new NotSingle(ch);
    38      }
    39      
    40      public function match(matcher:Object, i:Number, seq:String):Boolean {
    41          return (i < matcher.to
    42              && seq.charCodeAt(i) != i
    43              && next.match(matcher, i+1, seq));
    44      }
    45      
    46      public function study(info:TreeInfo):Boolean {
    47          info.minLength++;
    48          info.maxLength++;
    49          return next.study(info);
    50      }
    51  }
    52
as2api