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Java > Open Source Codes > org > jruby > parser > RubyParserConfiguration


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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
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14  * Copyright (C) 2002 Jan Arne Petersen <jpetersen@uni-bonn.de>
15  * Copyright (C) 2004 Thomas E Enebo <enebo@acm.org>
16  * Copyright (C) 2004 Anders Bengtsson <ndrsbngtssn@yahoo.se>
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30 package org.jruby.parser;
31
32 import org.jruby.runtime.DynamicScope;
33
34 public class RubyParserConfiguration {
35     private DynamicScope existingScope = null;
36     private boolean asBlock = false;
37
38     /**
39      * If we are performing an eval we should pass existing scope in.
40      * Calling this lets the parser know we need to do this.
41      *
42      * @param existingScope is the scope that captures new vars, etc...
43      */

44     public void parseAsBlock(DynamicScope existingScope) {
45         this.asBlock = true;
46         this.existingScope = existingScope;
47     }
48     
49     /**
50      * This method returns the appropriate first scope for the parser.
51      *
52      * @return correct top scope for source to be parsed
53      */

54     public DynamicScope getScope() {
55         if (asBlock) {
56             return existingScope;
57         }
58         
59         // FIXME: We should really not be creating the dynamic scope for the root
60
// of the AST before parsing. This makes us end up needing to readjust
61
// this dynamic scope coming out of parse (and for local static scopes it
62
// will always happen because of $~ and $_).
63
return new DynamicScope(new LocalStaticScope(null), existingScope);
64     }
65 }
66
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