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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/nodes/RootNode.java @ 13705:ac5b0f31f7a2

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Truffle API-change: FrameDescriptors are now stored in the RootNode in a final field instead of the CallTarget.
author Christian Humer <christian.humer@gmail.com>
date Fri, 17 Jan 2014 17:06:08 +0100
parents 8f0fb0ade839
children e076c87ab175
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1 /*
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2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation. Oracle designates this
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8 * particular file as subject to the "Classpath" exception as provided
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9 * by Oracle in the LICENSE file that accompanied this code.
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10 *
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11 * This code is distributed in the hope that it will be useful, but WITHOUT
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a4b84ba6dc2e Introduction of the Truffle API for efficient implementation of dynamic languages on top of the Graal VM. New projects com.oracle.truffle.api for the API definition and com.oracle.truffle.api.test for API tests and documentation.
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14 * version 2 for more details (a copy is included in the LICENSE file that
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15 * accompanied this code).
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16 *
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17 * You should have received a copy of the GNU General Public License version
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18 * 2 along with this work; if not, write to the Free Software Foundation,
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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20 *
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22 * or visit www.oracle.com if you need additional information or have any
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23 * questions.
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24 */
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25 package com.oracle.truffle.api.nodes;
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27 import com.oracle.truffle.api.*;
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28 import com.oracle.truffle.api.frame.*;
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30 /**
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31 * A root node is a node with a method to execute it given only a frame as a parameter. Therefore, a
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32 * root node can be used to create a call target using
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33 * {@link TruffleRuntime#createCallTarget(RootNode)}.
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34 */
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35 public abstract class RootNode extends Node {
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36
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37 private CallTarget callTarget;
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38 private final FrameDescriptor frameDescriptor;
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39
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40 protected RootNode() {
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41 this(null, null);
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42 }
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43
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44 protected RootNode(SourceSection sourceSection) {
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45 this(sourceSection, null);
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46 }
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47
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48 protected RootNode(SourceSection sourceSection, FrameDescriptor frameDescriptor) {
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49 super(sourceSection);
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50 if (frameDescriptor == null) {
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51 this.frameDescriptor = new FrameDescriptor();
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52 } else {
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53 this.frameDescriptor = frameDescriptor;
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54 }
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55 }
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56
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57 /**
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58 * Executes this function using the specified frame and returns the result value.
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59 *
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60 * @param frame the frame of the currently executing guest language method
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61 * @return the value of the execution
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62 */
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63 public abstract Object execute(VirtualFrame frame);
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64
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65 public CallTarget getCallTarget() {
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66 return callTarget;
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67 }
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68
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69 public FrameDescriptor getFrameDescriptor() {
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70 return frameDescriptor;
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71 }
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72
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73 public void setCallTarget(CallTarget callTarget) {
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74 this.callTarget = callTarget;
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75 }
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76 }