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Java > Open Source Codes > com > caucho > quercus > expr > IncludeExpr


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.expr;
31
32 import com.caucho.quercus.Location;
33 import com.caucho.quercus.env.Env;
34 import com.caucho.quercus.env.NullValue;
35 import com.caucho.quercus.env.Value;
36 import com.caucho.vfs.Path;
37
38 /**
39  * Represents a PHP include statement
40  */
41 public class IncludeExpr extends UnaryExpr {
42   protected Path _dir;
43   protected boolean _isRequire;
44   
45   public IncludeExpr(Location location, Path sourceFile, Expr expr)
46   {
47     super(location, expr);
48
49     _dir = sourceFile.getParent();
50   }
51   
52   public IncludeExpr(Location location, Path sourceFile, Expr expr, boolean isRequire)
53   {
54     this(location, sourceFile, expr);
55
56     _isRequire = isRequire;
57   }
58   
59   public IncludeExpr(Path sourceFile, Expr expr)
60   {
61     super(expr);
62
63     _dir = sourceFile.getParent();
64   }
65   
66   public IncludeExpr(Path sourceFile, Expr expr, boolean isRequire)
67   {
68     this(sourceFile, expr);
69
70     _isRequire = isRequire;
71   }
72   
73   /**
74    * Evaluates the expression.
75    *
76    * @param env the calling environment.
77    *
78    * @return the expression value.
79    */
80   public Value eval(Env env)
81   {
82     String JavaDoc name = _expr.evalString(env);
83       
84     env.pushCall(this, NullValue.NULL);
85     try {
86       return env.include(_dir, name, _isRequire, false);
87     } finally {
88       env.popCall();
89     }
90   }
91   
92   public String JavaDoc toString()
93   {
94     return _expr.toString();
95   }
96 }
97
98
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