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Java > Open Source Codes > com > caucho > quercus > program > CompiledFunctionRef_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 function with 3 args
42  */
43 abstract public class CompiledFunctionRef_3 extends CompiledFunctionRef {
44   private static final Logger JavaDoc log
45     = Logger.getLogger(CompiledFunctionRef_3.class.getName());
46   private static final L10N L = new L10N(CompiledFunctionRef_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 CompiledFunctionRef_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       log.fine(L.l(env.getLocation().getMessagePrefix() + "incorrect number of arguments" + env.getFunctionLocation()));
74
75     return args;
76   }
77
78   public Value callRef(Env env, Value []argValues)
79   {
80     switch (argValues.length) {
81     case 0:
82       return callRef(env, NullValue.NULL, NullValue.NULL);
83     case 1:
84       return callRef(env,
85                      argValues[0],
86                      _default_1.eval(env),
87                      _default_2.eval(env));
88     case 2:
89       return callRef(env,
90                      argValues[0],
91                      argValues[1],
92                      _default_2.eval(env));
93     case 3:
94     default:
95       return callRef(env,
96                      argValues[0],
97                      argValues[1],
98                      argValues[2]);
99     }
100   }
101
102   /**
103    * Evaluates the function with arguments
104    */
105   abstract public Value callRef(Env env, Value a1, Value a2, Value a3);
106
107   public String JavaDoc toString()
108   {
109     return "CompiledFunctionRef_3[" + _name + "]";
110   }
111 }
112
113
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