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Java > Open Source Codes > com > caucho > quercus > program > CompiledMethodRef_2


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 2 args
42  */
43 abstract public class CompiledMethodRef_2 extends CompiledMethodRef {
44   private static final Logger JavaDoc log
45     = Logger.getLogger(CompiledMethodRef_2.class.getName());
46   private static final L10N L = new L10N(CompiledMethodRef_2.class);
47
48   private String JavaDoc _name;
49   private Expr _default_0;
50   private Expr _default_1;
51
52   public CompiledMethodRef_2(String JavaDoc name, Expr default_0, Expr default_1)
53   {
54     _name = name;
55     _default_0 = default_0;
56     _default_1 = default_1;
57   }
58   
59   /**
60    * Binds the user's arguments to the actual arguments.
61    *
62    * @param args the user's arguments
63    * @return the user arguments augmented by any defaults
64    */
65   public Expr []bindArguments(Env env, Expr fun, Expr []args)
66   {
67     if (args.length != 2)
68       env.warning(L.l("incorrect"));
69
70     return args;
71   }
72
73   /**
74    * Evaluates the method with the given variable arguments.
75    */
76   public Value callMethodRef(Env env, Value obj, Value []argValues)
77   {
78     switch (argValues.length) {
79     case 0:
80       return callMethodRef(env, obj, _default_0.eval(env), _default_1.eval(env));
81     case 1:
82       return callMethodRef(env, obj, argValues[0], _default_1.eval(env));
83     case 2:
84     default:
85       return callMethodRef(env, obj, argValues[0], argValues[1]);
86     }
87   }
88
89   abstract public Value callMethodRef(Env env, Value obj, Value a1, Value a2);
90
91   /**
92    * Evaluates the method as a static function
93    */
94   public Value call(Env env, Value []argValues)
95   {
96     env.warning(L.l("can't call '{0}' as a static function", _name));
97
98     return NullValue.NULL;
99   }
100   
101   public String JavaDoc toString()
102   {
103     return "CompiledMethod_2[" + _name + "]";
104   }
105 }
106
107
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