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comparison graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLHelloEqualsWorldBuiltin.java @ 15064:f675818d9ad0

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new getStackTrace and getCurrentFrame functionality in TruffleRuntime
author Lukas Stadler <lukas.stadler@oracle.com>
date Fri, 11 Apr 2014 11:53:11 +0200
parents
children 1f7fd2cc008f
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15063:36e1a11a72b3 15064:f675818d9ad0
1 /*
2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.oracle.truffle.sl.builtins;
24
25 import com.oracle.truffle.api.*;
26 import com.oracle.truffle.api.dsl.*;
27 import com.oracle.truffle.api.frame.*;
28 import com.oracle.truffle.api.frame.FrameInstance.FrameAccess;
29 import com.oracle.truffle.api.nodes.*;
30
31 /**
32 * This builtin sets the variable named "hello" in the caller frame to the string "world".
33 */
34 @NodeInfo(shortName = "helloEqualsWorld")
35 public abstract class SLHelloEqualsWorldBuiltin extends SLBuiltinNode {
36
37 @Specialization
38 public Object change() {
39 FrameInstance frameInstance = Truffle.getRuntime().getStackTrace().iterator().next();
40 Frame frame = frameInstance.getFrame(FrameAccess.READ_WRITE, false);
41 FrameSlot slot = frame.getFrameDescriptor().findOrAddFrameSlot("hello");
42 frame.setObject(slot, "world");
43 return null;
44 }
45 }