CallbackObjectMethod


1   /*
2    * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3    *
4    * This file is part of Resin(R) Open Source
5    *
6    * Each copy or derived work must preserve the copyright notice and this
7    * notice unmodified.
8    *
9    * Resin Open Source is free software; you can redistribute it and/or modify
10   * it under the terms of the GNU General Public License as published by
11   * the Free Software Foundation; either version 2 of the License, or
12   * (at your option) any later version.
13   *
14   * Resin Open Source is distributed in the hope that it will be useful,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17   * of NON-INFRINGEMENT.  See the GNU General Public License for more
18   * details.
19   *
20   * You should have received a copy of the GNU General Public License
21   * along with Resin Open Source; if not, write to the
22   *
23   *   Free Software Foundation, Inc.
24   *   59 Temple Place, Suite 330
25   *   Boston, MA 02111-1307  USA
26   *
27   * @author Scott Ferguson
28   */
29  
30  package com.caucho.quercus.env;
31  
32  import com.caucho.quercus.program.AbstractFunction;
33  import com.caucho.vfs.WriteStream;
34  
35  import java.io.IOException  ;
36  import java.util.IdentityHashMap  ;
37  
38  /**
39   * Represents a call to an object's method
40   */
41  public class CallbackObjectMethod extends Callback {
42    private final Value _obj;
43    private final String   _methodName;
44    private final AbstractFunction _fun;
45  
46    public CallbackObjectMethod(Env env, Value obj, String   methodName)
47    {
48      _obj = obj;
49      _methodName = methodName.intern();
50      // _fun = env.findMethod(_obj.getType(), _methodName);
51      _fun = env.findMethod(_obj.getClassName(), _methodName);
52    }
53  
54    /**
55     * Evaluates the callback with no arguments.
56     *
57     * @param env the calling environment
58     */
59    public Value call(Env env)
60    {
61      return _obj.callMethod(env, _methodName);
62    }
63  
64    /**
65     * Evaluates the callback with 1 argument.
66     *
67     * @param env the calling environment
68     */
69    public Value call(Env env, Value a1)
70    {
71      return _obj.callMethod(env, _methodName, a1);
72    }
73  
74    /**
75     * Evaluates the callback with 2 arguments.
76     *
77     * @param env the calling environment
78     */
79    public Value call(Env env, Value a1, Value a2)
80    {
81      return _obj.callMethod(env, _methodName, a1, a2);
82    }
83  
84    /**
85     * Evaluates the callback with 3 arguments.
86     *
87     * @param env the calling environment
88     */
89    public Value call(Env env, Value a1, Value a2, Value a3)
90    {
91      return _obj.callMethod(env, _methodName, a1, a2, a3);
92    }
93  
94    /**
95     * Evaluates the callback with 3 arguments.
96     *
97     * @param env the calling environment
98     */
99    public Value call(Env env, Value a1, Value a2, Value a3,
100                  Value a4)
101   {
102     return _obj.callMethod(env, _methodName, a1, a2, a3, a4);
103   }
104 
105   /**
106    * Evaluates the callback with 3 arguments.
107    *
108    * @param env the calling environment
109    */
110   public Value call(Env env, Value a1, Value a2, Value a3,
111             Value a4, Value a5)
112   {
113     return _obj.callMethod(env, _methodName, a1, a2, a3, a4, a5);
114   }
115 
116   public Value call(Env env, Value []args)
117   {
118     return _obj.callMethod(env, _methodName, args);
119   }
120 
121   public void varDumpImpl(Env env,
122                           WriteStream out,
123                           int depth,
124                           IdentityHashMap  <Value, String  > valueSet)
125     throws IOException  
126   {
127     out.print(getClass().getName());
128     out.print('[');
129     out.print(_methodName);
130     out.print(']');
131   }
132   
133   // XXX: just a placeholder, need real implementation here
134   public boolean isValid()
135   {
136     return true;
137   }
138 
139   public String   getCallbackName() 
140   {
141     return _methodName;
142   }
143 
144   public boolean isInternal()
145   {
146     return _fun instanceof JavaInvoker;
147   }
148 }
149
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