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Java > Open Source Codes > com > caucho > quercus > program > CompiledMethodRef_4


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 4 args
42  */

43 abstract public class CompiledMethodRef_4 extends CompiledMethodRef {
44   private static final Logger JavaDoc log
45     = Logger.getLogger(CompiledMethodRef_4.class.getName());
46   private static final L10N L = new L10N(CompiledMethodRef_4.class);
47
48   private String JavaDoc _name;
49   private Expr _default_0;
50   private Expr _default_1;
51   private Expr _default_2;
52   private Expr _default_3;
53
54   public CompiledMethodRef_4(String JavaDoc name,
55               Expr default_0,
56               Expr default_1,
57               Expr default_2,
58               Expr default_3)
59   {
60     _name = name;
61     _default_0 = default_0;
62     _default_1 = default_1;
63     _default_2 = default_2;
64     _default_3 = default_3;
65   }
66   
67   /**
68    * Binds the user's arguments to the actual arguments.
69    *
70    * @param args the user's arguments
71    * @return the user arguments augmented by any defaults
72    */

73   public Expr []bindArguments(Env env, Expr fun, Expr []args)
74   {
75     if (args.length != 4)
76       env.warning(L.l("incorrect"));
77
78     return args;
79   }
80
81   /**
82    * Evaluates the method with the given variable arguments.
83    */

84   public Value callMethodRef(Env env, Value obj, Value []argValues)
85   {
86     switch (argValues.length) {
87     case 0:
88       return callMethodRef(env,
89             obj,
90             _default_0.eval(env),
91             _default_1.eval(env),
92             _default_2.eval(env),
93             _default_3.eval(env));
94     case 1:
95       return callMethodRef(env,
96             obj,
97             argValues[0],
98             _default_1.eval(env),
99             _default_2.eval(env),
100             _default_3.eval(env));
101     case 2:
102       return callMethodRef(env,
103             obj,
104             argValues[0],
105             argValues[1],
106             _default_2.eval(env),
107             _default_3.eval(env));
108     case 3:
109       return callMethodRef(env,
110             obj,
111             argValues[0],
112             argValues[1],
113             argValues[2],
114             _default_3.eval(env));
115     case 4:
116     default:
117       return callMethodRef(env,
118             obj,
119             argValues[0],
120             argValues[1],
121             argValues[2],
122             argValues[3]);
123     }
124   }
125
126   abstract public Value callMethodRef(Env env,
127                    Value obj,
128                    Value a1,
129                    Value a2,
130                    Value a3,
131                                    Value a4);
132
133   /**
134    * Evaluates the method as a static function
135    */

136   public Value call(Env env, Value []argValues)
137   {
138     env.warning(L.l("can't call '{0}' as a static function", _name));
139
140     return NullValue.NULL;
141   }
142   
143   public String JavaDoc toString()
144   {
145     return "CompiledMethodRef_4[" + _name + "]";
146   }
147 }
148
149
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