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Java > Open Source Codes > com > caucho > quercus > program > CompiledMethodRef_3


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.program;
31
32 import com.caucho.quercus.env.Env;
33 import com.caucho.quercus.env.NullValue;
34 import com.caucho.quercus.env.Value;
35 import com.caucho.quercus.expr.Expr;
36 import com.caucho.util.L10N;
37
38 import java.util.logging.Logger JavaDoc;
39
40 /**
41  * Represents a compiled method with 3 args
42  */
43 abstract public class CompiledMethodRef_3 extends CompiledMethodRef {
44   private static final Logger JavaDoc log
45     = Logger.getLogger(CompiledMethodRef_3.class.getName());
46   private static final L10N L = new L10N(CompiledMethodRef_3.class);
47
48   private String JavaDoc _name;
49   private Expr _default_0;
50   private Expr _default_1;
51   private Expr _default_2;
52
53   public CompiledMethodRef_3(String JavaDoc name,
54               Expr default_0,
55               Expr default_1,
56               Expr default_2)
57   {
58     _name = name;
59     _default_0 = default_0;
60     _default_1 = default_1;
61     _default_2 = default_2;
62   }
63   
64   /**
65    * Binds the user's arguments to the actual arguments.
66    *
67    * @param args the user's arguments
68    * @return the user arguments augmented by any defaults
69    */
70   public Expr []bindArguments(Env env, Expr fun, Expr []args)
71   {
72     if (args.length != 3)
73       env.warning(L.l("incorrect"));
74
75     return args;
76   }
77
78   /**
79    * Evaluates the method with the given variable arguments.
80    */
81   public Value callMethodRef(Env env, Value obj, Value []argValues)
82   {
83     switch (argValues.length) {
84     case 0:
85       return callMethodRef(env,
86             obj,
87             _default_0.eval(env),
88             _default_1.eval(env),
89             _default_2.eval(env));
90     case 1:
91       return callMethodRef(env,
92             obj,
93             argValues[0],
94             _default_1.eval(env),
95             _default_2.eval(env));
96     case 2:
97       return callMethodRef(env,
98             obj,
99             argValues[0],
100             argValues[1],
101             _default_2.eval(env));
102     case 3:
103     default:
104       return callMethodRef(env,
105             obj,
106             argValues[0],
107             argValues[1],
108             argValues[2]);
109     }
110   }
111
112   abstract public Value callMethodRef(Env env,
113                    Value obj,
114                    Value a1,
115                    Value a2,
116                       Value a3);
117
118   /**
119    * Evaluates the method as a static function
120    */
121   public Value call(Env env, Value []argValues)
122   {
123     env.warning(L.l("can't call '{0}' as a static function", _name));
124
125     return NullValue.NULL;
126   }
127   
128   public String JavaDoc toString()
129   {
130     return "CompiledMethodRef_3[" + _name + "]";
131   }
132 }
133
134
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