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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/NullSourceSection.java @ 16068:74e142bd2b12

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Truffle/Source: major API revision - All source-related classes now in com.oracle.truffle.api.source - SourceFactory replaced with factory methods on Source - Revision, renaming, and documentation to methods on Source and SourceSection - NullSourceSection is now a utility class
author Michael Van De Vanter <michael.van.de.vanter@oracle.com>
date Fri, 06 Jun 2014 22:13:00 -0700
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children 33bdafbf285d
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1 /*
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2 * Copyright (c) 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 * 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
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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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.source;
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26
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27 /**
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28 * A special subtype of {@link SourceSection} that represents unavailable source, e.g. for language
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29 * <em>builtins</em>.
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30 */
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31 public class NullSourceSection implements SourceSection {
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32
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33 private final String kind;
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34 private final String name;
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35 private final String asCode;
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36
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37 /**
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38 * Placeholder for source that is unavailable, e.g. for language <em>builtins</em>.
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39 *
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40 * @param kind the general category, e.g. "JS builtin"
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41 * @param name specific name for this section
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42 */
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43 public NullSourceSection(String kind, String name) {
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44 this(kind, name, kind);
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45 }
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46
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47 /**
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48 * Placeholder for source that is unavailable, e.g. for language <em>builtins</em>.
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49 *
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50 * @param kind the general category, e.g. "JS builtin"
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51 * @param name specific name for this section
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52 * @param asCode string to return when {@link #getCode()} is called
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53 */
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54 public NullSourceSection(String kind, String name, String asCode) {
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55 this.kind = kind;
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56 this.name = name;
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57 this.asCode = asCode;
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58 }
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59
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60 public final Source getSource() {
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61 return null;
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62 }
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63
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64 public final int getStartLine() {
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65 throw new UnsupportedOperationException(this.toString());
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66 }
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67
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68 public final LineLocation getLineLocation() {
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69 throw new UnsupportedOperationException(this.toString());
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70 }
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71
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72 public final int getStartColumn() {
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73 throw new UnsupportedOperationException(this.toString());
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74 }
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75
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76 public final int getCharIndex() {
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77 throw new UnsupportedOperationException(this.toString());
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78 }
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79
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80 public final int getCharLength() {
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81 throw new UnsupportedOperationException(this.toString());
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82 }
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83
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84 public final int getCharEndIndex() {
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85 throw new UnsupportedOperationException(this.toString());
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86 }
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87
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88 public final String getIdentifier() {
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89 return name;
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90 }
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91
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92 public final String getCode() {
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93 return asCode;
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94 }
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95
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96 public final String getShortDescription() {
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97 return kind + ": " + name;
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98 }
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99
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100 @Override
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101 public String toString() {
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102 return getShortDescription();
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103 }
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104
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105 }