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annotate truffle/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/SLStatementNode.java @ 22548:6b76a24fffbd default tip

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Use all variables: a, b, u,v and x, y
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Thu, 14 Jan 2016 14:20:57 +0100
parents 68a0c3dcea10
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 /*
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2 * Copyright (c) 2012, 2014, 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 * The Universal Permissive License (UPL), Version 1.0
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6 *
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7 * Subject to the condition set forth below, permission is hereby granted to any
c07e64ecb528 Update SL copyright headers to use UPL
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8 * person obtaining a copy of this software, associated documentation and/or
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9 * data (collectively the "Software"), free of charge and under any and all
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10 * copyright rights in the Software, and any and all patent rights owned or
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11 * freely licensable by each licensor hereunder covering either (i) the
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12 * unmodified Software as contributed to or provided by such licensor, or (ii)
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13 * the Larger Works (as defined below), to deal in both
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14 *
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15 * (a) the Software, and
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16 *
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17 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
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18 * one is included with the Software each a "Larger Work" to which the Software
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19 * is contributed by such licensors),
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20 *
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21 * without restriction, including without limitation the rights to copy, create
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22 * derivative works of, display, perform, and distribute the Software and make,
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23 * use, sell, offer for sale, import, export, have made, and have sold the
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24 * Software and the Larger Work(s), and to sublicense the foregoing rights on
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25 * either these or other terms.
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26 *
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27 * This license is subject to the following condition:
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28 *
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29 * The above copyright notice and either this complete permission notice or at a
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30 * minimum a reference to the UPL must be included in all copies or substantial
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31 * portions of the Software.
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32 *
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33 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
c07e64ecb528 Update SL copyright headers to use UPL
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34 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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35 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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36 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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37 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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38 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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parents: 21951
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39 * SOFTWARE.
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40 */
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41 package com.oracle.truffle.sl.nodes;
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42
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43 import java.io.File;
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44
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45 import com.oracle.truffle.api.frame.VirtualFrame;
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46 import com.oracle.truffle.api.nodes.Node;
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47 import com.oracle.truffle.api.nodes.NodeInfo;
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48 import com.oracle.truffle.api.source.SourceSection;
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49
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50 /**
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51 * The base class of all Truffle nodes for SL. All nodes (even expressions) can be used as
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52 * statements, i.e., without returning a value. The {@link VirtualFrame} provides access to the
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53 * local variables.
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54 */
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55 @NodeInfo(language = "Simple Language", description = "The abstract base node for all statements")
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56 public abstract class SLStatementNode extends Node {
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57
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58 public SLStatementNode(SourceSection src) {
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59 super(src);
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60 }
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61
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62 /**
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63 * Execute this node as as statement, where no return value is necessary.
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64 */
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65 public abstract void executeVoid(VirtualFrame frame);
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66
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67 public SLStatementNode getNonWrapperNode() {
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68 return this;
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69 }
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71 @Override
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72 public String toString() {
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73 return formatSourceSection(this);
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74 }
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75
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76 /**
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77 * Formats a source section of a node in human readable form. If no source section could be
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78 * found it looks up the parent hierarchy until it finds a source section. Nodes where this was
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79 * required append a <code>'~'</code> at the end.
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80 *
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81 * @param node the node to format.
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82 * @return a formatted source section string
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83 */
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84 public static String formatSourceSection(Node node) {
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85 if (node == null) {
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86 return "<unknown>";
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87 }
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88 SourceSection section = node.getSourceSection();
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89 boolean estimated = false;
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90 if (section == null) {
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91 section = node.getEncapsulatingSourceSection();
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92 estimated = true;
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93 }
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94
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95 if (section == null || section.getSource() == null) {
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96 return "<unknown source>";
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97 } else {
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98 String sourceName = new File(section.getSource().getName()).getName();
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99 int startLine = section.getStartLine();
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100 return String.format("%s:%d%s", sourceName, startLine, estimated ? "~" : "");
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101 }
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102 }
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103 }