/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.myfaces.tobago.facelets;
  
  import javax.el.ELContext;
  import javax.el.ELException;
  import javax.el.MethodExpression;
  import javax.el.MethodInfo;
  import javax.el.MethodNotFoundException;
  import javax.el.PropertyNotFoundException;
  import javax.faces.FacesWrapper;
  import javax.faces.view.facelets.TagAttribute;
  import java.io.Externalizable;
  import java.io.IOException;
  import java.io.ObjectInput;
  import java.io.ObjectOutput;
  
  /*
   * Was copied from MyFaces-Impl.
   */
  
  /**
   * Jacob Hookom
   */
  public final class TagMethodExpression extends MethodExpression
      implements Externalizable, FacesWrapper<MethodExpression> {
  
    private static final long serialVersionUID = 1L;
  
    private String attr;
    private MethodExpression orig;
  
    public TagMethodExpression() {
      super();
    }
  
    public TagMethodExpression(final TagAttribute attr, final MethodExpression orig) {
      this.attr = attr.toString();
      this.orig = orig;
    }
  
    @Override
    public MethodInfo getMethodInfo(final ELContext context) {
      try {
        return this.orig.getMethodInfo(context);
      } catch (final PropertyNotFoundException pnfe) {
        throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
      } catch (final MethodNotFoundException mnfe) {
        throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
      } catch (final ELException e) {
        throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
      }
    }
  
    @Override
    public Object invoke(final ELContext context, final Object[] params) {
      try {
        return this.orig.invoke(context, params);
      } catch (final PropertyNotFoundException pnfe) {
        throw new PropertyNotFoundException(this.attr + ": " + pnfe.getMessage(), pnfe.getCause());
      } catch (final MethodNotFoundException mnfe) {
        throw new MethodNotFoundException(this.attr + ": " + mnfe.getMessage(), mnfe.getCause());
      } catch (final ELException e) {
        throw new ELException(this.attr + ": " + e.getMessage(), e.getCause());
      }
    }
  
    @Override
    public String getExpressionString() {
      return this.orig.getExpressionString();
    }
  
    public boolean equals(final Object obj) {
      return this.orig.equals(obj);
    }
  
    public int hashCode() {
      return this.orig.hashCode();
    }
  
    @Override
    public boolean isLiteralText() {
     return this.orig.isLiteralText();
   }
 
   @Override
   public void writeExternal(final ObjectOutput out) throws IOException {
     out.writeObject(this.orig);
     out.writeUTF(this.attr);
   }
 
   @Override
   public void readExternal(final ObjectInput in) throws IOException, ClassNotFoundException {
     this.orig = (MethodExpression) in.readObject();
     this.attr = in.readUTF();
   }
 
   public String toString() {
     return this.attr + ": " + this.orig;
   }
 
   @Override
   public MethodExpression getWrapped() {
     return this.orig;
   }
 }