KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > jruby > runtime > CompiledBlock


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
8  *
9  * Software distributed under the License is distributed on an "AS
10  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * rights and limitations under the License.
13  *
14  * Copyright (C) 2006 Ola Bini <ola@ologix.com>
15  *
16  * Alternatively, the contents of this file may be used under the terms of
17  * either of the GNU General Public License Version 2 or later (the "GPL"),
18  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
19  * in which case the provisions of the GPL or the LGPL are applicable instead
20  * of those above. If you wish to allow use of your version of this file only
21  * under the terms of either the GPL or the LGPL, and not to allow others to
22  * use your version of this file under the terms of the CPL, indicate your
23  * decision by deleting the provisions above and replace them with the notice
24  * and other provisions required by the GPL or the LGPL. If you do not delete
25  * the provisions above, a recipient may use your version of this file under
26  * the terms of any one of the CPL, the GPL or the LGPL.
27  ***** END LICENSE BLOCK *****/

28 package org.jruby.runtime;
29
30 import org.jruby.RubyModule;
31 import org.jruby.ast.util.ArgsUtil;
32 import org.jruby.runtime.builtin.IRubyObject;
33
34 /**
35  * A Block implemented using a Java-based BlockCallback implementation
36  * rather than with an ICallable. For lightweight block logic within
37  * Java code.
38  */

39 public class CompiledBlock extends Block {
40     private Arity arity;
41     private CompiledBlockCallback callback;
42     private ThreadContext context;
43     private IRubyObject self;
44     private IRubyObject[][] scopes;
45
46     public CompiledBlock(ThreadContext context, IRubyObject self, Arity arity, IRubyObject[][] scopes, CompiledBlockCallback callback) {
47         super(null,
48                 null,
49                 self,
50                 context.getCurrentFrame(),
51                 context.peekCRef(),
52                 Visibility.PUBLIC,
53                 context.getRubyClass(),
54                 context.getCurrentScope());
55         this.arity = arity;
56         this.callback = callback;
57         this.context = context;
58         this.self = self;
59         this.scopes = scopes;
60     }
61
62     public IRubyObject call(ThreadContext context, IRubyObject[] args, IRubyObject replacementSelf) {
63         return callback.call(context, replacementSelf, args, Block.NULL_BLOCK, scopes);
64     }
65     
66     public IRubyObject yield(ThreadContext context, IRubyObject args, IRubyObject self, RubyModule klass, boolean aValue) {
67         return callback.call(context, this.self, ArgsUtil.convertToJavaArray(args), Block.NULL_BLOCK, scopes);
68     }
69
70     public Block cloneBlock() {
71         return new CompiledBlock(context, self, arity, scopes, callback);
72     }
73
74     public Arity arity() {
75         return arity;
76     }
77 }
78
Popular Tags