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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/FunctionBodyNode.java @ 12752:71991b7a0f14

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SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
author Christian Humer <christian.humer@gmail.com>
date Mon, 11 Nov 2013 21:34:44 +0100
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12752
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
Christian Humer <christian.humer@gmail.com>
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1 /*
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2 * Copyright (c) 2012, 2012, Oracle and/or its affiliates. All rights reserved.
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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6 * under the terms of the GNU General Public License version 2 only, as
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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7 * published by the Free Software Foundation.
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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8 *
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
Christian Humer <christian.humer@gmail.com>
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
Christian Humer <christian.humer@gmail.com>
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
Christian Humer <christian.humer@gmail.com>
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12 * version 2 for more details (a copy is included in the LICENSE file that
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Christian Humer <christian.humer@gmail.com>
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13 * accompanied this code).
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14 *
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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15 * You should have received a copy of the GNU General Public License version
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
Christian Humer <christian.humer@gmail.com>
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16 * 2 along with this work; if not, write to the Free Software Foundation,
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
71991b7a0f14 SL: Enhanced SimpleLanguage with support for if statements, function calls, function caching + inlining and builtins.
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.nodes;
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24
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25 import com.oracle.truffle.api.frame.*;
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26 import com.oracle.truffle.api.nodes.*;
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27
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28 public class FunctionBodyNode extends TypedNode {
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29
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30 @Child private StatementNode body;
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31 @Child private TypedNode returnValue;
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32 @Child private StatementNode writeArguments;
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33
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34 private FrameDescriptor frameDescriptor;
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35
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36 public FunctionBodyNode(FrameDescriptor frameDescriptor, StatementNode body, TypedNode returnValue, String[] parameterNames) {
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37 this.frameDescriptor = frameDescriptor;
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38 this.body = adoptChild(body);
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39 this.returnValue = adoptChild(returnValue);
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40 this.writeArguments = adoptChild(new BlockNode(createWriteArguments(parameterNames)));
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41 }
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42
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43 @Override
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44 public Object executeGeneric(VirtualFrame frame) {
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45 writeArguments.executeVoid(frame);
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46 try {
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47 body.executeVoid(frame);
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48 } catch (ReturnException ex) {
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49 // Nothing to do, we just need to return.
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50 }
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51 if (returnValue != null) {
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52 return returnValue.executeGeneric(frame);
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53 } else {
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54 return null;
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55 }
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56 }
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57
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58 @Override
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59 public Node copy() {
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60 FunctionBodyNode copy = (FunctionBodyNode) super.copy();
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61 copy.frameDescriptor = frameDescriptor.shallowCopy();
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62 return copy;
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63 }
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64
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65 private StatementNode[] createWriteArguments(String[] parameterNames) {
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66 StatementNode[] writeNodes = new StatementNode[parameterNames.length];
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67 for (int i = 0; i < parameterNames.length; i++) {
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68 FrameSlot frameSlot = frameDescriptor.findOrAddFrameSlot(parameterNames[i]);
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69 writeNodes[i] = WriteLocalNodeFactory.create(frameSlot, new ReadArgumentNode(i));
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70 }
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71 return writeNodes;
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72 }
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73
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74 public FrameDescriptor getFrameDescriptor() {
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75 return frameDescriptor;
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76 }
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77
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78 }