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


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 N args
42  */
43 abstract public class CompiledMethod_N extends CompiledMethod {
44   private static final Logger JavaDoc log
45     = Logger.getLogger(CompiledMethod_N.class.getName());
46   private static final L10N L = new L10N(CompiledMethod_N.class);
47
48   private String JavaDoc _name;
49   private Expr []_defaultArgs;
50
51   public CompiledMethod_N(String JavaDoc name, Expr []defaultArgs)
52   {
53     _name = name;
54
55     _defaultArgs = defaultArgs;
56   }
57   
58   /**
59    * Binds the user's arguments to the actual arguments.
60    *
61    * @param args the user's arguments
62    * @return the user arguments augmented by any defaults
63    */
64   public Expr []bindArguments(Env env, Expr fun, Expr []args)
65   {
66     return args;
67   }
68
69   public final Value callMethod(Env env, Value obj, Value []argValues)
70   {
71     Value []args;
72
73     if (_defaultArgs.length <= argValues.length) {
74       args = argValues;
75     }
76     else {
77       args = new Value[_defaultArgs.length];
78
79       System.arraycopy(argValues, 0, args, 0, argValues.length);
80
81       for (int i = argValues.length; i < args.length; i++) {
82     if (_defaultArgs[i] != null)
83       args[i] = _defaultArgs[i].eval(env);
84     else
85       args[i] = NullValue.NULL;
86       }
87     }
88
89     return callMethodImpl(env, obj, args);
90   }
91
92   abstract public Value callMethodImpl(Env env, Value obj, Value []argValues);
93
94   public String JavaDoc toString()
95   {
96     return "CompiledMethod_N[" + _name + "]";
97   }
98 }
99
100
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