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.Range;
    19  import org.as2lib.regexp.node.TreeInfo;
    20  
    21  /**
    22   * {@code NotRange} is a node class for matching characters without an 
    23   * explicit value range.
    24   * 
    25   * @author Igor Sadovskiy
    26   */
    27  
    28  class org.as2lib.regexp.node.NotRange extends Node {
    29  	
    30      private var lower, upper:Number;
    31      
    32      public function NotRange(n:Number) {
    33      	if (n != null) {
    34  	        lower = n >>> 16;
    35  	        upper = n & 0xFFFF;
    36      	}
    37      }
    38      
    39      public function dup(flag:Boolean):Node {
    40          if (flag) {
    41              return new Range((lower << 16) + upper);
    42          } else {
    43              return new NotRange((lower << 16) + upper);
    44          }
    45      }
    46      
    47      public function match(matcher:Object, i:Number, seq:String):Boolean {
    48          if (i < matcher.to) {
    49              var ch:Number = seq.charCodeAt(i);
    50              return ((ch-lower)|(upper-ch)) < 0
    51                  && next.match(matcher, i+1, seq);
    52          }
    53          return false;
    54      }
    55      
    56      public function study(info:TreeInfo):Boolean {
    57          info.minLength++;
    58          info.maxLength++;
    59          return next.study(info);
    60      }
    61  }
    62  
    63
as2api