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Java > Open Source Codes > org > jruby > compiler > RootNodeCompiler


1 /***** BEGIN LICENSE BLOCK *****
2  * Version: CPL 1.0/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Common Public
5  * License Version 1.0 (the "License"); you may not use this file
6  * except in compliance with the License. You may obtain a copy of
7  * the License at http://www.eclipse.org/legal/cpl-v10.html
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13  *
14  * Copyright (C) 2006 Charles O Nutter <headius@headius.com>
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17  * either of the GNU General Public License Version 2 or later (the "GPL"),
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28
29 package org.jruby.compiler;
30
31 import org.jruby.ast.Node;
32 import org.jruby.ast.RootNode;
33
34 /**
35  *
36  * @author headius
37  */
38 public class RootNodeCompiler implements NodeCompiler {
39     
40     /** Creates a new instance of RootNodeCompiler */
41     public RootNodeCompiler() {
42     }
43     
44     public void compile(Node node, Compiler JavaDoc context) {
45         RootNode rootNode = (RootNode)node;
46         
47         context.startScript();
48         
49         // create method for toplevel of script
50 Object JavaDoc methodToken = context.beginMethod("__file__", 0, rootNode.getStaticScope().getNumberOfVariables());
51
52         // try to compile the script's body
53 try {
54             Node nextNode = rootNode.getBodyNode();
55             if (nextNode != null) {
56                 NodeCompilerFactory.getCompiler(nextNode).compile(nextNode, context);
57             }
58         } catch (NotCompilableException nce) {
59             // TODO: recover somehow? build a pure eval method?
60 throw nce;
61         }
62         
63         context.endMethod(methodToken);
64         
65         context.endScript();
66     }
67 }
68
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