as2lib 0.9

     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.env.reflect.ConstructorInfo;
    18  import org.as2lib.aop.joinpoint.MethodJoinPoint;
    19  import org.as2lib.aop.JoinPoint;
    20  
    21  /**
    22   * {@code ConstructorJoinPoint} represents a constructor as join point.
    23   * 
    24   * @author Simon Wacker
    25   */
    26  class org.as2lib.aop.joinpoint.ConstructorJoinPoint extends MethodJoinPoint {
    27  	
    28  	/**
    29  	 * Constructs a new {@code ConstructorJoinPoint} instance.
    30  	 *
    31  	 * @param info the info of the represented constructor
    32  	 * @param thiz the logical this of the interception
    33  	 * @throws IllegalArgumentException if argument {@code info} is {@code null} or
    34  	 * {@code undefined}
    35  	 * @see <a href="http://www.simonwacker.com/blog/archives/000068.php">Passing Context</a>
    36  	 */
    37  	public function ConstructorJoinPoint(info:ConstructorInfo, thiz) {
    38  		super(info, thiz);
    39  	}
    40  	
    41  	/**
    42  	 * Returns the type of this join point.
    43  	 * 
    44  	 * @return {@link AbstractJoinPoint#CONSTRUCTOR}
    45  	 */
    46  	public function getType(Void):Number {
    47  		return CONSTRUCTOR;
    48  	}
    49  	
    50  	/**
    51  	 * Returns a copy of this join point with an updated logical this. This join point
    52  	 * is left unchanged.
    53  	 * 
    54  	 * @param thiz the new logical this
    55  	 * @return a copy of this join point with an updated logical this
    56  	 * @see #getThis
    57  	 */
    58  	public function update(thiz):JoinPoint {
    59  		return new ConstructorJoinPoint(ConstructorInfo(this.info), thiz);
    60  	}
    61  	
    62  	/**
    63  	 * Returns a copy of this join point that reflects its current state.
    64  	 * 
    65  	 * <p>It is common practice to create a new join point for a not-fixed constructor
    66  	 * info. This is when the underlying concrete constructor this join point reflects
    67  	 * may change. To make the concrete constructor and other parts that may change
    68  	 * fixed you can use this method to get a new fixed join point, a snapshot.
    69  	 * 
    70  	 * @return a snapshot of this join point
    71  	 */
    72  	public function snapshot(Void):JoinPoint {
    73  		return new ConstructorJoinPoint(ConstructorInfo(this.info.snapshot()), getThis());
    74  	}
    75  
    76  }