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comparison graal/com.oracle.truffle.ruby.nodes/src/com/oracle/truffle/ruby/nodes/methods/CatchReturnNode.java @ 13529:856c2c294f84

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Merge.
author Christian Humer <christian.humer@gmail.com>
date Tue, 07 Jan 2014 18:53:04 +0100
parents 0fbee3eb71f0
children
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13528:5a0c694ef735 13529:856c2c294f84
1 /*
2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
4 * redistribute it and/or modify it under the terms of the:
5 *
6 * Eclipse Public License version 1.0
7 * GNU General Public License version 2
8 * GNU Lesser General Public License version 2.1
9 */
10 package com.oracle.truffle.ruby.nodes.methods;
11
12 import com.oracle.truffle.api.*;
13 import com.oracle.truffle.api.frame.*;
14 import com.oracle.truffle.api.utilities.*;
15 import com.oracle.truffle.ruby.nodes.*;
16 import com.oracle.truffle.ruby.runtime.*;
17 import com.oracle.truffle.ruby.runtime.control.*;
18
19 /**
20 * Catch a {@code return} jump at the root of a method.
21 */
22 public class CatchReturnNode extends RubyNode {
23
24 @Child protected RubyNode body;
25 private final long returnID;
26
27 private final BranchProfile returnProfile = new BranchProfile();
28 private final BranchProfile returnToOtherMethodProfile = new BranchProfile();
29
30 public CatchReturnNode(RubyContext context, SourceSection sourceSection, RubyNode body, long returnID) {
31 super(context, sourceSection);
32 this.body = adoptChild(body);
33 this.returnID = returnID;
34 }
35
36 public CatchReturnNode(CatchReturnNode prev) {
37 super(prev);
38 returnID = prev.returnID;
39 }
40
41 @Override
42 public Object execute(VirtualFrame frame) {
43 try {
44 return body.execute(frame);
45 } catch (ReturnException e) {
46 returnProfile.enter();
47
48 if (e.getReturnID() == returnID) {
49 return e.getValue();
50 } else {
51 returnToOtherMethodProfile.enter();
52 throw e;
53 }
54 }
55 }
56
57 }