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comparison graal/com.oracle.truffle.ruby.runtime/src/com/oracle/truffle/ruby/runtime/RubyArguments.java @ 13514:0fbee3eb71f0

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Ruby: import project.
author Chris Seaton <chris.seaton@oracle.com>
date Mon, 06 Jan 2014 17:12:09 +0000
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13513:64a23ce736a0 13514:0fbee3eb71f0
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.runtime;
11
12 import com.oracle.truffle.api.*;
13 import com.oracle.truffle.api.frame.*;
14 import com.oracle.truffle.api.nodes.*;
15 import com.oracle.truffle.ruby.runtime.core.*;
16
17 /**
18 * Arguments and other context passed to a Ruby method. Includes the central Ruby context object,
19 * optionally the scope at the point of declaration (forming a closure), the value of self, a passed
20 * block, and the formal arguments.
21 */
22 public final class RubyArguments extends Arguments {
23
24 private final MaterializedFrame declarationFrame;
25 private final Object self;
26 private final RubyProc block;
27 private final Object[] arguments;
28
29 public RubyArguments(MaterializedFrame declarationFrame, Object self, RubyProc block, Object... arguments) {
30 assert self != null;
31 assert arguments != null;
32
33 this.declarationFrame = declarationFrame;
34 this.self = self;
35 this.block = block;
36 this.arguments = arguments;
37 }
38
39 public MaterializedFrame getDeclarationFrame() {
40 return declarationFrame;
41 }
42
43 /**
44 * Get the declaration frame a certain number of levels up from the current frame, where the
45 * current frame is 0.
46 */
47 public static MaterializedFrame getDeclarationFrame(VirtualFrame frame, int level) {
48 assert level > 0;
49
50 MaterializedFrame parentFrame = frame.getArguments(RubyArguments.class).getDeclarationFrame();
51 return getDeclarationFrame(parentFrame, level - 1);
52 }
53
54 /**
55 * Get the declaration frame a certain number of levels up from the current frame, where the
56 * current frame is 0.
57 */
58 @ExplodeLoop
59 private static MaterializedFrame getDeclarationFrame(MaterializedFrame frame, int level) {
60 assert frame != null;
61 assert level >= 0;
62
63 MaterializedFrame parentFrame = frame;
64
65 for (int n = 0; n < level; n++) {
66 parentFrame = parentFrame.getArguments(RubyArguments.class).getDeclarationFrame();
67 }
68
69 return parentFrame;
70 }
71
72 public Object getSelf() {
73 return self;
74 }
75
76 public RubyProc getBlock() {
77 return block;
78 }
79
80 public Object[] getArguments() {
81 return arguments;
82 }
83
84 }