content: /* 
   * Kodkod -- Copyright (c) 2005-present, Emina Torlak
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  package kodkod.engine.fol2sat;
  
  import kodkod.ast.LeafExpression;
  
  /**
   * Thrown when a node contains an undeclared variable or a relation with no bounds.
   * @specfield leaf: LeafExpression // the unbound leaf that caused the exception to be thrown
   * @author Emina Torlak
   */
  public final class UnboundLeafException extends RuntimeException {
  	private final LeafExpression leaf;
  	private static final long serialVersionUID = 2472395272061454465L;
  
  	/**
  	 * Constructs an UnboundLeafException for the given leaf.
  	 * @ensures this.leaf' = leaf
  	 */
  	UnboundLeafException(String msg, LeafExpression leaf) {
  		super(msg + ": " +leaf);
  		this.leaf = leaf;
  	}
  
  	/**
  	 * Returns this.leaf.
  	 * @return this.leaf
  	 */
  	public LeafExpression leaf() { 
  		return leaf;
  	}
  
  }
  