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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/Source.java @ 19697:191c55f08ed2
Truffle: add the ability to "tag" Sources with any number of standard or private tags, for example so that Sources might be marked as "FROM_FILE", "LIBRARY", "BUILTIN", or any other distinction that matters to some tools. Those tags can be applied by the language runtime when sources are created, for example when loading builtins. Alternately, you can listen for newly created sources from outside the implementation, where you might tag sources based on pattern matching against file paths or any other meta-information in the Source.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Wed, 04 Mar 2015 16:36:27 -0800 |
parents | c152a485d747 |
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1 /* |
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2 * Copyright (c) 2013, 2015, 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 import java.io.*; |
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28 import java.lang.ref.*; |
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29 import java.net.*; |
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30 import java.util.*; |
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31 |
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32 import com.oracle.truffle.api.instrument.*; |
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Truffle: add the ability to "tag" Sources with any number of standard or private tags, for example so that Sources might be marked as "FROM_FILE", "LIBRARY", "BUILTIN", or any other distinction that matters to some tools. Those tags can be applied by the language runtime when sources are created, for example when loading builtins. Alternately, you can listen for newly created sources from outside the implementation, where you might tag sources based on pattern matching against file paths or any other meta-information in the Source.
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33 |
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34 /** |
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35 * Representation of a guest language source code unit and its contents. Sources originate in |
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36 * several ways: |
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37 * <ul> |
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38 * <li><strong>Literal:</strong> A named text string. These are not indexed and should be considered |
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39 * value objects; equality is defined based on contents. <br> |
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40 * See {@link Source#fromText(CharSequence, String)}</li> |
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41 * <p> |
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42 * <li><strong>File:</strong> Each file is represented as a canonical object, indexed by the |
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43 * absolute, canonical path name of the file. File contents are <em>read lazily</em> and contents |
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44 * optionally <em>cached</em>. <br> |
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45 * See {@link Source#fromFileName(String)}<br> |
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46 * See {@link Source#fromFileName(String, boolean)}</li> |
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47 * <p> |
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48 * <li><strong>URL:</strong> Each URL source is represented as a canonical object, indexed by the |
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49 * URL. Contents are <em>read eagerly</em> and <em>cached</em>. <br> |
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50 * See {@link Source#fromURL(URL, String)}</li> |
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51 * <p> |
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52 * <li><strong>Reader:</strong> Contents are <em>read eagerly</em> and treated as a <em>Literal</em> |
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53 * . <br> |
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54 * See {@link Source#fromReader(Reader, String)}</li> |
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55 * <p> |
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56 * <li><strong>Pseudo File:</strong> A literal text string that can be retrieved by name as if it |
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57 * were a file, unlike literal sources; useful for testing. <br> |
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58 * See {@link Source#asPseudoFile(CharSequence, String)}</li> |
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59 * </ul> |
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60 * <p> |
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61 * <strong>File cache:</strong> |
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62 * <ol> |
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63 * <li>File content caching is optional, <em>off</em> by default.</li> |
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64 * <li>The first access to source file contents will result in the contents being read, and (if |
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65 * enabled) cached.</li> |
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66 * <li>If file contents have been cached, access to contents via {@link Source#getInputStream()} or |
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67 * {@link Source#getReader()} will be provided from the cache.</li> |
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68 * <li>Any access to file contents via the cache will result in a timestamp check and possible cache |
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69 * reload.</li> |
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70 * </ol> |
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71 * <p> |
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72 * |
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73 * @see SourceTag |
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74 * @see SourceListener |
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75 */ |
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76 public abstract class Source { |
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77 |
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78 // TODO (mlvdv) consider canonicalizing and reusing SourceSection instances |
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79 // TOOD (mlvdv) connect SourceSections into a spatial tree for fast geometric lookup |
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80 |
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81 /** |
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82 * All Sources that have been created. |
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83 */ |
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84 private static final List<WeakReference<Source>> allSources = new ArrayList<>(); |
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85 |
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86 // Files and pseudo files are indexed. |
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87 private static final Map<String, WeakReference<Source>> filePathToSource = new Hashtable<>(); |
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88 |
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89 private static boolean fileCacheEnabled = true; |
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90 |
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91 private static final List<SourceListener> sourceListeners = new ArrayList<>(); |
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92 |
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93 /** |
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94 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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95 * then cached. |
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96 * |
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97 * @param fileName name |
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98 * @param reset forces any existing {@link Source} cache to be cleared, forcing a re-read |
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99 * @return canonical representation of the file's contents. |
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100 * @throws IOException if the file can not be read |
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101 */ |
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102 public static Source fromFileName(String fileName, boolean reset) throws IOException { |
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103 |
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104 final WeakReference<Source> nameRef = filePathToSource.get(fileName); |
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105 Source source = nameRef == null ? null : nameRef.get(); |
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106 if (source == null) { |
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107 final File file = new File(fileName); |
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108 if (!file.canRead()) { |
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109 throw new IOException("Can't read file " + fileName); |
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110 } |
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111 final String path = file.getCanonicalPath(); |
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112 final WeakReference<Source> pathRef = filePathToSource.get(path); |
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113 source = pathRef == null ? null : pathRef.get(); |
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114 if (source == null) { |
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115 source = new FileSource(file, fileName, path); |
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116 filePathToSource.put(path, new WeakReference<>(source)); |
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117 } |
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118 } |
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119 if (reset) { |
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120 source.reset(); |
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121 } |
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122 notifyNewSource(source).tagAs(StandardSourceTag.FROM_FILE); |
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123 return source; |
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124 } |
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125 |
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126 /** |
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127 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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128 * then cached. |
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129 * |
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130 * @param fileName name |
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131 * @return canonical representation of the file's contents. |
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132 * @throws IOException if the file can not be read |
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133 */ |
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134 public static Source fromFileName(String fileName) throws IOException { |
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135 return fromFileName(fileName, false); |
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136 } |
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137 |
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138 /** |
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139 * Gets the canonical representation of a source file, whose contents have already been read and |
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140 * need not be read again. It is confirmed that the file resolves to a file name, so it can be |
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141 * indexed by canonical path. It is not confirmed that the text supplied agrees with the file's |
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142 * contents or even whether the file is readable. |
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143 * |
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144 * @param chars textual source code already read from the file |
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145 * @param fileName |
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146 * @return canonical representation of the file's contents. |
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147 * @throws IOException if the file cannot be found |
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148 */ |
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149 public static Source fromFileName(CharSequence chars, String fileName) throws IOException { |
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150 |
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151 final WeakReference<Source> nameRef = filePathToSource.get(fileName); |
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152 Source source = nameRef == null ? null : nameRef.get(); |
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153 if (source == null) { |
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154 final File file = new File(fileName); |
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155 // We are going to trust that the fileName is readable. |
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156 final String path = file.getCanonicalPath(); |
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157 final WeakReference<Source> pathRef = filePathToSource.get(path); |
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158 source = pathRef == null ? null : pathRef.get(); |
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159 if (source == null) { |
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160 source = new FileSource(file, fileName, path, chars); |
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161 filePathToSource.put(path, new WeakReference<>(source)); |
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162 } |
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163 } |
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164 notifyNewSource(source).tagAs(StandardSourceTag.FROM_FILE); |
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165 return source; |
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166 } |
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167 |
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168 /** |
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169 * Creates a non-canonical source from literal text. If an already created literal source must |
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170 * be retrievable by name, use {@link #asPseudoFile(CharSequence, String)}. |
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171 * |
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172 * @param chars textual source code |
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173 * @param description a note about the origin, for error messages and debugging |
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174 * @return a newly created, non-indexed source representation |
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175 */ |
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176 public static Source fromText(CharSequence chars, String description) { |
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177 assert chars != null; |
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178 final LiteralSource source = new LiteralSource(description, chars.toString()); |
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179 notifyNewSource(source).tagAs(StandardSourceTag.FROM_LITERAL); |
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180 return source; |
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181 } |
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182 |
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183 /** |
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184 * Creates a source whose contents will be read immediately from a URL and cached. |
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185 * |
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186 * @param url |
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187 * @param description identifies the origin, possibly useful for debugging |
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188 * @return a newly created, non-indexed source representation |
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189 * @throws IOException if reading fails |
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190 */ |
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191 public static Source fromURL(URL url, String description) throws IOException { |
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192 final URLSource source = URLSource.get(url, description); |
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193 notifyNewSource(source).tagAs(StandardSourceTag.FROM_URL); |
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194 return source; |
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195 } |
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196 |
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197 /** |
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198 * Creates a source whose contents will be read immediately and cached. |
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199 * |
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200 * @param reader |
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201 * @param description a note about the origin, possibly useful for debugging |
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202 * @return a newly created, non-indexed source representation |
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203 * @throws IOException if reading fails |
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204 */ |
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205 public static Source fromReader(Reader reader, String description) throws IOException { |
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206 final LiteralSource source = new LiteralSource(description, read(reader)); |
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207 notifyNewSource(source).tagAs(StandardSourceTag.FROM_READER); |
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208 return source; |
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209 } |
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210 |
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211 /** |
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212 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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213 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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214 * character indices. The returned source is then indexed by byte, not by character. |
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215 * |
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216 * @param bytes the raw bytes of the source |
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217 * @param description a note about the origin, possibly useful for debugging |
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218 * @param decoder how to decode the bytes into Java strings |
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219 * @return a newly created, non-indexed source representation |
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220 */ |
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221 public static Source fromBytes(byte[] bytes, String description, BytesDecoder decoder) { |
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222 return fromBytes(bytes, 0, bytes.length, description, decoder); |
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223 } |
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224 |
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225 /** |
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226 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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227 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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228 * character indices. The returned source is then indexed by byte, not by character. Offsets are |
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229 * relative to byteIndex. |
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230 * |
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231 * @param bytes the raw bytes of the source |
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232 * @param byteIndex where the string starts in the byte array |
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233 * @param length the length of the string in the byte array |
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234 * @param description a note about the origin, possibly useful for debugging |
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235 * @param decoder how to decode the bytes into Java strings |
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236 * @return a newly created, non-indexed source representation |
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237 */ |
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238 public static Source fromBytes(byte[] bytes, int byteIndex, int length, String description, BytesDecoder decoder) { |
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239 final BytesSource source = new BytesSource(description, bytes, byteIndex, length, decoder); |
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240 notifyNewSource(source).tagAs(StandardSourceTag.FROM_BYTES); |
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241 return source; |
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242 } |
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243 |
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244 /** |
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245 * Creates a source from literal text, but which acts as a file and can be retrieved by name |
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246 * (unlike other literal sources); intended for testing. |
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247 * |
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248 * @param chars textual source code |
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249 * @param pseudoFileName string to use for indexing/lookup |
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250 * @return a newly created, source representation, canonical with respect to its name |
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251 */ |
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252 public static Source asPseudoFile(CharSequence chars, String pseudoFileName) { |
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253 final Source source = new LiteralSource(pseudoFileName, chars.toString()); |
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254 filePathToSource.put(pseudoFileName, new WeakReference<>(source)); |
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255 notifyNewSource(source).tagAs(StandardSourceTag.FROM_LITERAL); |
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256 return source; |
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257 } |
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258 |
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259 // TODO (mlvdv) enable per-file choice whether to cache? |
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260 /** |
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261 * Enables/disables caching of file contents, <em>disabled</em> by default. Caching of sources |
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262 * created from literal text or readers is always enabled. |
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263 */ |
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264 public static void setFileCaching(boolean enabled) { |
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265 fileCacheEnabled = enabled; |
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266 } |
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267 |
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268 /** |
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269 * Returns all {@link Source}s holding a particular {@link SyntaxTag}, or the whole collection |
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270 * of Sources if the specified tag is {@code null}. |
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271 * |
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272 * @return A collection of Sources containing the given tag. |
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273 */ |
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274 public static Collection<Source> findSourcesTaggedAs(SourceTag tag) { |
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275 final List<Source> taggedSources = new ArrayList<>(); |
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276 for (WeakReference<Source> ref : allSources) { |
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277 Source source = ref.get(); |
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278 if (source != null) { |
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279 if (tag == null || source.isTaggedAs(tag)) { |
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280 taggedSources.add(ref.get()); |
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281 } |
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282 } |
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283 } |
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284 return taggedSources; |
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285 } |
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286 |
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287 /** |
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288 * Adds a {@link SourceListener} to receive events. |
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289 */ |
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290 public static void addSourceListener(SourceListener listener) { |
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291 assert listener != null; |
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292 sourceListeners.add(listener); |
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293 } |
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294 |
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295 /** |
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296 * Removes a {@link SourceListener}. Ignored if listener not found. |
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297 */ |
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298 public static void removeSourceListener(SourceListener listener) { |
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299 sourceListeners.remove(listener); |
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300 } |
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301 |
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302 private static Source notifyNewSource(Source source) { |
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303 allSources.add(new WeakReference<>(source)); |
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304 for (SourceListener listener : sourceListeners) { |
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305 listener.sourceCreated(source); |
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306 } |
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307 return source; |
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308 } |
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309 |
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310 private static String read(Reader reader) throws IOException { |
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311 final BufferedReader bufferedReader = new BufferedReader(reader); |
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312 final StringBuilder builder = new StringBuilder(); |
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313 final char[] buffer = new char[1024]; |
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314 |
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315 while (true) { |
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316 final int n = bufferedReader.read(buffer); |
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317 if (n == -1) { |
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318 break; |
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319 } |
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320 builder.append(buffer, 0, n); |
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321 } |
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322 |
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323 return builder.toString(); |
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324 } |
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325 |
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326 private final ArrayList<SourceTag> tags = new ArrayList<>(); |
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327 |
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328 Source() { |
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329 } |
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330 |
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331 private TextMap textMap = null; |
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332 |
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333 protected abstract void reset(); |
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334 |
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335 public final boolean isTaggedAs(SourceTag tag) { |
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336 assert tag != null; |
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337 return tags.contains(tag); |
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338 } |
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339 |
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340 public final Collection<SourceTag> getSourceTags() { |
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341 return Collections.unmodifiableCollection(tags); |
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342 } |
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343 |
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344 /** |
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345 * Adds a {@linkplain SourceTag tag} to the set of tags associated with this {@link Source}; |
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346 * {@code no-op} if already in the set. |
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347 * |
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348 * @return this |
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349 */ |
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350 public final Source tagAs(SourceTag tag) { |
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351 assert tag != null; |
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352 if (!tags.contains(tag)) { |
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353 tags.add(tag); |
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354 for (SourceListener listener : sourceListeners) { |
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355 listener.sourceTaggedAs(this, tag); |
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356 } |
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357 } |
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358 return this; |
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359 } |
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360 |
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361 /** |
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362 * Returns the name of this resource holding a guest language program. An example would be the |
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363 * name of a guest language source code file. |
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364 * |
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365 * @return the name of the guest language program |
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366 */ |
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367 public abstract String getName(); |
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368 |
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369 /** |
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370 * Returns a short version of the name of the resource holding a guest language program (as |
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371 * described in @getName). For example, this could be just the name of the file, rather than a |
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372 * full path. |
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373 * |
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374 * @return the short name of the guest language program |
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375 */ |
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376 public abstract String getShortName(); |
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377 |
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378 /** |
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379 * The normalized, canonical name if the source is a file. |
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380 */ |
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381 public abstract String getPath(); |
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382 |
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383 /** |
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384 * The URL if the source is retrieved via URL. |
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385 */ |
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386 public abstract URL getURL(); |
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387 |
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388 /** |
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389 * Access to the source contents. |
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390 */ |
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391 public abstract Reader getReader(); |
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392 |
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393 /** |
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394 * Access to the source contents. |
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395 */ |
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396 public final InputStream getInputStream() { |
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397 return new ByteArrayInputStream(getCode().getBytes()); |
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398 } |
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399 |
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400 /** |
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401 * Gets the number of characters in the source. |
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402 */ |
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403 public final int getLength() { |
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404 return checkTextMap().length(); |
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405 } |
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406 |
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407 /** |
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408 * Returns the complete text of the code. |
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409 */ |
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410 public abstract String getCode(); |
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411 |
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412 /** |
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413 * Returns a subsection of the code test. |
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414 */ |
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415 public String getCode(int charIndex, int charLength) { |
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416 return getCode().substring(charIndex, charIndex + charLength); |
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417 } |
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418 |
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419 /** |
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420 * Gets the text (not including a possible terminating newline) in a (1-based) numbered line. |
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421 */ |
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422 public final String getCode(int lineNumber) { |
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423 checkTextMap(); |
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424 final int offset = textMap.lineStartOffset(lineNumber); |
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425 final int length = textMap.lineLength(lineNumber); |
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426 return getCode().substring(offset, offset + length); |
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427 } |
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428 |
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429 /** |
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430 * The number of text lines in the source, including empty lines; characters at the end of the |
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431 * source without a terminating newline count as a line. |
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432 */ |
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433 public final int getLineCount() { |
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434 return checkTextMap().lineCount(); |
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435 } |
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436 |
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437 /** |
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438 * Given a 0-based character offset, return the 1-based number of the line that includes the |
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439 * position. |
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440 * |
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441 * @throws IllegalArgumentException if the offset is outside the text contents |
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442 */ |
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443 public final int getLineNumber(int offset) throws IllegalArgumentException { |
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444 return checkTextMap().offsetToLine(offset); |
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445 } |
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446 |
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447 /** |
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448 * Given a 0-based character offset, return the 1-based number of the column at the position. |
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449 * |
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450 * @throws IllegalArgumentException if the offset is outside the text contents |
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451 */ |
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452 public final int getColumnNumber(int offset) throws IllegalArgumentException { |
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453 return checkTextMap().offsetToCol(offset); |
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454 } |
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455 |
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456 /** |
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457 * Given a 1-based line number, return the 0-based offset of the first character in the line. |
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458 * |
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459 * @throws IllegalArgumentException if there is no such line in the text |
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460 */ |
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461 public final int getLineStartOffset(int lineNumber) throws IllegalArgumentException { |
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462 return checkTextMap().lineStartOffset(lineNumber); |
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463 } |
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464 |
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465 /** |
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466 * The number of characters (not counting a possible terminating newline) in a (1-based) |
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467 * numbered line. |
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468 * |
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469 * @throws IllegalArgumentException if there is no such line in the text |
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470 */ |
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471 public final int getLineLength(int lineNumber) throws IllegalArgumentException { |
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472 return checkTextMap().lineLength(lineNumber); |
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473 } |
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474 |
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475 /** |
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476 * Creates a representation of a contiguous region of text in the source. |
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477 * <p> |
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478 * This method performs no checks on the validity of the arguments. |
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479 * <p> |
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480 * The resulting representation defines hash/equality around equivalent location, presuming that |
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481 * {@link Source} representations are canonical. |
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482 * |
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483 * @param identifier terse description of the region |
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484 * @param startLine 1-based line number of the first character in the section |
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485 * @param startColumn 1-based column number of the first character in the section |
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486 * @param charIndex the 0-based index of the first character of the section |
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487 * @param length the number of characters in the section |
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488 * @return newly created object representing the specified region |
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489 */ |
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490 public final SourceSection createSection(String identifier, int startLine, int startColumn, int charIndex, int length) { |
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491 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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492 } |
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493 |
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494 /** |
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495 * Creates a representation of a contiguous region of text in the source. Computes the |
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496 * {@code charIndex} value by building a {@linkplain TextMap map} of lines in the source. |
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497 * <p> |
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498 * Checks the position arguments for consistency with the source. |
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499 * <p> |
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500 * The resulting representation defines hash/equality around equivalent location, presuming that |
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501 * {@link Source} representations are canonical. |
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502 * |
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503 * @param identifier terse description of the region |
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504 * @param startLine 1-based line number of the first character in the section |
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505 * @param startColumn 1-based column number of the first character in the section |
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506 * @param length the number of characters in the section |
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507 * @return newly created object representing the specified region |
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508 * @throws IllegalArgumentException if arguments are outside the text of the source |
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509 * @throws IllegalStateException if the source is one of the "null" instances |
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510 */ |
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511 public final SourceSection createSection(String identifier, int startLine, int startColumn, int length) { |
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512 checkTextMap(); |
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513 final int lineStartOffset = textMap.lineStartOffset(startLine); |
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514 if (startColumn > textMap.lineLength(startLine)) { |
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515 throw new IllegalArgumentException("column out of range"); |
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516 } |
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517 final int startOffset = lineStartOffset + startColumn - 1; |
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518 return new DefaultSourceSection(this, identifier, startLine, startColumn, startOffset, length); |
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519 } |
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520 |
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521 /** |
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522 * Creates a representation of a contiguous region of text in the source. Computes the |
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523 * {@code (startLine, startColumn)} values by building a {@linkplain TextMap map} of lines in |
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524 * the source. |
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525 * <p> |
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526 * Checks the position arguments for consistency with the source. |
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527 * <p> |
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528 * The resulting representation defines hash/equality around equivalent location, presuming that |
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529 * {@link Source} representations are canonical. |
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530 * |
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531 * |
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532 * @param identifier terse description of the region |
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533 * @param charIndex 0-based position of the first character in the section |
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534 * @param length the number of characters in the section |
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535 * @return newly created object representing the specified region |
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536 * @throws IllegalArgumentException if either of the arguments are outside the text of the |
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537 * source |
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538 * @throws IllegalStateException if the source is one of the "null" instances |
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539 */ |
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540 public final SourceSection createSection(String identifier, int charIndex, int length) throws IllegalArgumentException { |
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541 checkRange(charIndex, length); |
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542 checkTextMap(); |
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543 final int startLine = getLineNumber(charIndex); |
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544 final int startColumn = charIndex - getLineStartOffset(startLine) + 1; |
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545 |
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546 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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547 } |
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548 |
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549 protected void checkRange(int charIndex, int length) { |
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550 if (!(charIndex >= 0 && length >= 0 && charIndex + length <= getCode().length())) { |
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551 throw new IllegalArgumentException("text positions out of range"); |
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552 } |
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553 } |
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554 |
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555 /** |
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556 * Creates a representation of a line of text in the source identified only by line number, from |
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557 * which the character information will be computed. |
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558 * |
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559 * @param identifier terse description of the line |
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560 * @param lineNumber 1-based line number of the first character in the section |
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561 * @return newly created object representing the specified line |
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562 * @throws IllegalArgumentException if the line does not exist the source |
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563 * @throws IllegalStateException if the source is one of the "null" instances |
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564 */ |
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565 public final SourceSection createSection(String identifier, int lineNumber) { |
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566 checkTextMap(); |
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567 final int charIndex = textMap.lineStartOffset(lineNumber); |
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568 final int length = textMap.lineLength(lineNumber); |
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569 return createSection(identifier, charIndex, length); |
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570 } |
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571 |
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572 /** |
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573 * Creates a representation of a line number in this source, suitable for use as a hash table |
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574 * key with equality defined to mean equivalent location. |
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575 * |
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576 * @param lineNumber a 1-based line number in this source |
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577 * @return a representation of a line in this source |
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578 */ |
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579 public final LineLocation createLineLocation(int lineNumber) { |
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580 return new LineLocationImpl(this, lineNumber); |
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581 } |
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582 |
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583 private TextMap checkTextMap() { |
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584 if (textMap == null) { |
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585 textMap = createTextMap(); |
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586 } |
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587 return textMap; |
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588 } |
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589 |
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590 protected TextMap createTextMap() { |
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591 final String code = getCode(); |
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592 if (code == null) { |
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593 throw new RuntimeException("can't read file " + getName()); |
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594 } |
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595 return TextMap.fromString(code); |
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596 } |
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597 |
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598 private static final class LiteralSource extends Source { |
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599 |
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600 private final String name; // Name used originally to describe the source |
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601 private final String code; |
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602 |
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603 public LiteralSource(String name, String code) { |
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604 this.name = name; |
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605 this.code = code; |
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606 } |
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607 |
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608 @Override |
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609 public String getName() { |
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610 return name; |
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611 } |
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612 |
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613 @Override |
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614 public String getShortName() { |
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615 return name; |
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616 } |
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617 |
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618 @Override |
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619 public String getCode() { |
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620 return code; |
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621 } |
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622 |
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623 @Override |
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624 public String getPath() { |
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625 return name; |
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626 } |
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627 |
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628 @Override |
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629 public URL getURL() { |
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630 return null; |
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631 } |
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632 |
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633 @Override |
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634 public Reader getReader() { |
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635 return new StringReader(code); |
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636 } |
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637 |
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|
638 @Override |
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639 protected void reset() { |
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640 } |
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641 |
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|
642 @Override |
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643 public int hashCode() { |
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644 final int prime = 31; |
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645 int result = 1; |
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646 result = prime * result + name.hashCode(); |
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647 result = prime * result + (code == null ? 0 : code.hashCode()); |
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648 return result; |
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649 } |
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650 |
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|
651 @Override |
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652 public boolean equals(Object obj) { |
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653 if (this == obj) { |
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|
654 return true; |
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|
655 } |
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656 if (obj == null) { |
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657 return false; |
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|
658 } |
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659 if (!(obj instanceof LiteralSource)) { |
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|
660 return false; |
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|
661 } |
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662 LiteralSource other = (LiteralSource) obj; |
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663 return name.equals(other.name) && code.equals(other.code); |
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664 } |
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|
665 |
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|
666 } |
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|
667 |
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|
668 private static final class FileSource extends Source { |
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|
669 |
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670 private final File file; |
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671 private final String name; // Name used originally to describe the source |
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|
672 private final String path; // Normalized path description of an actual file |
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|
673 |
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|
674 private String code = null; // A cache of the file's contents |
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675 private long timeStamp; // timestamp of the cache in the file system |
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|
676 |
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|
677 public FileSource(File file, String name, String path) { |
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678 this(file, name, path, null); |
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679 } |
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|
680 |
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|
681 public FileSource(File file, String name, String path, CharSequence chars) { |
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parents:
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|
682 this.file = file.getAbsoluteFile(); |
16068
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683 this.name = name; |
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684 this.path = path; |
19687
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|
685 if (chars != null) { |
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|
686 this.code = chars.toString(); |
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|
687 } |
16068
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|
688 } |
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|
689 |
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|
690 @Override |
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|
691 public String getName() { |
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|
692 return name; |
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|
693 } |
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|
694 |
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|
695 @Override |
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diff
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|
696 public String getShortName() { |
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|
697 return file.getName(); |
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|
698 } |
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|
699 |
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|
700 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
701 public String getCode() { |
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|
702 if (fileCacheEnabled) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
703 if (code == null || timeStamp != file.lastModified()) { |
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|
704 try { |
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|
705 code = read(getReader()); |
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parents:
diff
changeset
|
706 timeStamp = file.lastModified(); |
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parents:
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|
707 } catch (IOException e) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
708 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
709 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
710 return code; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
711 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
712 try { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
713 return read(new FileReader(file)); |
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|
714 } catch (IOException e) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
715 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
716 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
717 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
718 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
719 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
720 public String getPath() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
721 return path; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
722 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
723 |
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parents:
diff
changeset
|
724 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
725 public URL getURL() { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
726 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
727 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
728 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
729 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
730 public Reader getReader() { |
74e142bd2b12
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parents:
diff
changeset
|
731 if (code != null && timeStamp == file.lastModified()) { |
74e142bd2b12
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parents:
diff
changeset
|
732 return new StringReader(code); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
733 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
734 try { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
735 return new FileReader(file); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
736 } catch (FileNotFoundException e) { |
18979
bdb24e259c11
include original exception in FileSource.getReader
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18676
diff
changeset
|
737 |
bdb24e259c11
include original exception in FileSource.getReader
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18676
diff
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|
738 throw new RuntimeException("Can't find file " + path, e); |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
739 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
740 } |
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parents:
diff
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|
741 |
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parents:
diff
changeset
|
742 @Override |
18676
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
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|
743 public int hashCode() { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
744 return path.hashCode(); |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
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|
745 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
746 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
747 @Override |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
748 public boolean equals(Object obj) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
749 if (this == obj) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
750 return true; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
751 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
752 if (obj instanceof FileSource) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
753 FileSource other = (FileSource) obj; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
754 return path.equals(other.path); |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
755 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
756 return false; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
757 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
758 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
759 @Override |
16068
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diff
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|
760 protected void reset() { |
74e142bd2b12
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parents:
diff
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|
761 this.code = null; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
762 } |
74e142bd2b12
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parents:
diff
changeset
|
763 |
74e142bd2b12
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parents:
diff
changeset
|
764 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
765 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
766 private static final class URLSource extends Source { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
767 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
768 private static final Map<URL, WeakReference<URLSource>> urlToSource = new HashMap<>(); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
769 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
770 public static URLSource get(URL url, String name) throws IOException { |
74e142bd2b12
Truffle/Source: major API revision
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parents:
diff
changeset
|
771 WeakReference<URLSource> sourceRef = urlToSource.get(url); |
74e142bd2b12
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parents:
diff
changeset
|
772 URLSource source = sourceRef == null ? null : sourceRef.get(); |
74e142bd2b12
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parents:
diff
changeset
|
773 if (source == null) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
774 source = new URLSource(url, name); |
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parents:
diff
changeset
|
775 urlToSource.put(url, new WeakReference<>(source)); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
776 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
777 return source; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
778 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
779 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
780 private final URL url; |
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parents:
diff
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|
781 private final String name; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
782 private String code = null; // A cache of the source contents |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
783 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
784 public URLSource(URL url, String name) throws IOException { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
785 this.url = url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
786 this.name = name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
787 code = read(new InputStreamReader(url.openStream())); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
788 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
789 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
790 @Override |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
791 public String getName() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
792 return name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
793 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
794 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
795 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
796 public String getShortName() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
797 return name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
798 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
799 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
800 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
801 public String getPath() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
802 return url.getPath(); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
803 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
804 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
805 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
806 public URL getURL() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
807 return url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
808 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
809 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
810 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
811 public Reader getReader() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
812 return new StringReader(code); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
813 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
814 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
815 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
816 public String getCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
817 return code; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
818 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
819 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
820 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
821 protected void reset() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
822 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
823 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
824 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
825 |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
826 private static final class BytesSource extends Source { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
827 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
828 private final String name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
829 private final byte[] bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
830 private final int byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
831 private final int length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
832 private final BytesDecoder decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
833 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
834 public BytesSource(String name, byte[] bytes, int byteIndex, int length, BytesDecoder decoder) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
835 this.name = name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
836 this.bytes = bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
837 this.byteIndex = byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
838 this.length = length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
839 this.decoder = decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
840 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
841 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
842 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
843 protected void reset() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
844 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
845 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
846 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
847 public String getName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
848 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
849 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
850 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
851 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
852 public String getShortName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
853 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
854 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
855 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
856 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
857 public String getPath() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
858 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
859 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
860 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
861 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
862 public URL getURL() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
863 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
864 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
865 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
866 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
867 public Reader getReader() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
868 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
869 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
870 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
871 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
872 public String getCode() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
873 return decoder.decode(bytes, byteIndex, length); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
874 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
875 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
876 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
877 public String getCode(int byteOffset, int codeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
878 return decoder.decode(bytes, byteIndex + byteOffset, codeLength); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
879 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
880 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
881 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
882 protected void checkRange(int charIndex, int rangeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
883 if (!(charIndex >= 0 && rangeLength >= 0 && charIndex + rangeLength <= length)) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
884 throw new IllegalArgumentException("text positions out of range"); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
885 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
886 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
887 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
888 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
889 protected TextMap createTextMap() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
890 return TextMap.fromBytes(bytes, byteIndex, length, decoder); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
891 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
892 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
893 |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
894 private static final class DefaultSourceSection implements SourceSection { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
895 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
896 private final Source source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
897 private final String identifier; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
898 private final int startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
899 private final int startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
900 private final int charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
901 private final int charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
902 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
903 /** |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
904 * Creates a new object representing a contiguous text section within the source code of a |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
905 * guest language program's text. |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
906 * <p> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
907 * The starting location of the section is specified using two different coordinate: |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
908 * <ul> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
909 * <li><b>(row, column)</b>: rows and columns are 1-based, so the first character in a |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
910 * source file is at position {@code (1,1)}.</li> |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
911 * <li><b>character index</b>: 0-based offset of the character from the beginning of the |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
912 * source, so the first character in a file is at index {@code 0}.</li> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
913 * </ul> |
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parents:
diff
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|
914 * The <b>newline</b> that terminates each line counts as a single character for the purpose |
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diff
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|
915 * of a character index. The (row,column) coordinates of a newline character should never |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
916 * appear in a text section. |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
917 * <p> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
918 * |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
919 * @param source object representing the complete source program that contains this section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
920 * @param identifier an identifier used when printing the section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
921 * @param startLine the 1-based number of the start line of the section |
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parents:
diff
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|
922 * @param startColumn the 1-based number of the start column of the section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
923 * @param charIndex the 0-based index of the first character of the section |
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parents:
diff
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|
924 * @param charLength the length of the section in number of characters |
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parents:
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|
925 */ |
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parents:
diff
changeset
|
926 public DefaultSourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
927 this.source = source; |
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parents:
diff
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|
928 this.identifier = identifier; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
929 this.startLine = startLine; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
930 this.startColumn = startColumn; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
931 this.charIndex = charIndex; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
932 this.charLength = charLength; |
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parents:
diff
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|
933 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
934 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
935 @Override |
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Doug Simon <doug.simon@oracle.com>
parents:
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|
936 public Source getSource() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
937 return source; |
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|
938 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
939 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
940 @Override |
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Doug Simon <doug.simon@oracle.com>
parents:
17066
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|
941 public int getStartLine() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
942 return startLine; |
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|
943 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
944 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
945 @Override |
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
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|
946 public LineLocation getLineLocation() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
947 return source.createLineLocation(startLine); |
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|
948 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
949 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
950 @Override |
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Doug Simon <doug.simon@oracle.com>
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17066
diff
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|
951 public int getStartColumn() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
952 return startColumn; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
953 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
954 |
19688
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
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|
955 public int getEndLine() { |
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Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
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|
956 return source.getLineNumber(charIndex + charLength - 1); |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
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|
957 } |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
958 |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
959 public int getEndColumn() { |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
960 return source.getColumnNumber(charIndex + charLength - 1); |
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Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
961 } |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
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|
962 |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
963 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
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|
964 public int getCharIndex() { |
16068
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
965 return charIndex; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
966 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
967 |
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diff
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|
968 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
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17066
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|
969 public int getCharLength() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
970 return charLength; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
971 } |
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parents:
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|
972 |
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parents:
diff
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|
973 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
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|
974 public int getCharEndIndex() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
975 return charIndex + charLength; |
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|
976 } |
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|
977 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
978 @Override |
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
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|
979 public String getIdentifier() { |
16068
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parents:
diff
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|
980 return identifier; |
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|
981 } |
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|
982 |
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|
983 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
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|
984 public String getCode() { |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
985 return getSource().getCode(charIndex, charLength); |
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|
986 } |
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|
987 |
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|
988 @Override |
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Doug Simon <doug.simon@oracle.com>
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|
989 public String getShortDescription() { |
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diff
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|
990 return String.format("%s:%d", source.getShortName(), startLine); |
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|
991 } |
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|
992 |
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|
993 @Override |
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diff
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|
994 public String toString() { |
16140
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Truffle/Source: SourceSection.toString() is now equivalent to getCode()
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
16130
diff
changeset
|
995 return getCode(); |
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|
996 } |
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|
997 |
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|
998 @Override |
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|
999 public int hashCode() { |
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diff
changeset
|
1000 final int prime = 31; |
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|
1001 int result = 1; |
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diff
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|
1002 result = prime * result + charIndex; |
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diff
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|
1003 result = prime * result + charLength; |
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diff
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|
1004 result = prime * result + ((identifier == null) ? 0 : identifier.hashCode()); |
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|
1005 result = prime * result + ((source == null) ? 0 : source.hashCode()); |
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|
1006 result = prime * result + startColumn; |
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diff
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|
1007 result = prime * result + startLine; |
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diff
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|
1008 return result; |
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|
1009 } |
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|
1010 |
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|
1011 @Override |
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|
1012 public boolean equals(Object obj) { |
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|
1013 if (this == obj) { |
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|
1014 return true; |
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|
1015 } |
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|
1016 if (obj == null) { |
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|
1017 return false; |
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|
1018 } |
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|
1019 if (!(obj instanceof DefaultSourceSection)) { |
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diff
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|
1020 return false; |
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|
1021 } |
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diff
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|
1022 DefaultSourceSection other = (DefaultSourceSection) obj; |
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diff
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|
1023 if (charIndex != other.charIndex) { |
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parents:
diff
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|
1024 return false; |
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diff
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|
1025 } |
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diff
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|
1026 if (charLength != other.charLength) { |
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parents:
diff
changeset
|
1027 return false; |
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diff
changeset
|
1028 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1029 if (identifier == null) { |
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diff
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|
1030 if (other.identifier != null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1031 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1032 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1033 } else if (!identifier.equals(other.identifier)) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1034 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1035 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1036 if (source == null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1037 if (other.source != null) { |
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parents:
diff
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|
1038 return false; |
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parents:
diff
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|
1039 } |
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diff
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|
1040 } else if (!source.equals(other.source)) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1041 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1042 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1043 if (startColumn != other.startColumn) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1044 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1045 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1046 if (startLine != other.startLine) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1047 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1048 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1049 return true; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1050 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1051 } |
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|
1052 |
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|
1053 private static final class LineLocationImpl implements LineLocation { |
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diff
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|
1054 private final Source source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1055 private final int line; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1056 |
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diff
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|
1057 public LineLocationImpl(Source source, int line) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1058 assert source != null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1059 this.source = source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1060 this.line = line; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1061 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1062 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1063 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1064 public Source getSource() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1065 return source; |
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diff
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|
1066 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1067 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1068 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1069 public int getLineNumber() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1070 return line; |
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parents:
diff
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|
1071 } |
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diff
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|
1072 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1073 @Override |
18485
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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|
1074 public String getShortDescription() { |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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|
1075 return source.getShortName() + ":" + line; |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1076 } |
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1077 |
e3c95cbbb50c
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|
1078 @Override |
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|
1079 public String toString() { |
18485
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|
1080 return "Line[" + getShortDescription() + "]"; |
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|
1081 } |
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|
1082 |
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diff
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|
1083 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1084 public int hashCode() { |
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Truffle/Source: major API revision
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diff
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|
1085 final int prime = 31; |
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parents:
diff
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|
1086 int result = 1; |
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diff
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|
1087 result = prime * result + line; |
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diff
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|
1088 result = prime * result + source.hashCode(); |
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parents:
diff
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|
1089 return result; |
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|
1090 } |
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|
1091 |
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diff
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|
1092 @Override |
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diff
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|
1093 public boolean equals(Object obj) { |
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diff
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|
1094 if (this == obj) { |
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diff
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|
1095 return true; |
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|
1096 } |
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diff
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|
1097 if (obj == null) { |
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diff
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|
1098 return false; |
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|
1099 } |
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|
1100 if (!(obj instanceof LineLocationImpl)) { |
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|
1101 return false; |
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|
1102 } |
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|
1103 LineLocationImpl other = (LineLocationImpl) obj; |
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|
1104 if (line != other.line) { |
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diff
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|
1105 return false; |
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|
1106 } |
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|
1107 return source.equals(other.source); |
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|
1108 } |
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|
1109 |
16130
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|
1110 } |
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|
1111 |
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|
1112 /** |
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|
1113 * A utility for converting between coordinate systems in a string of text interspersed with |
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|
1114 * newline characters. The coordinate systems are: |
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|
1115 * <ul> |
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|
1116 * <li>0-based character offset from the beginning of the text, where newline characters count |
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|
1117 * as a single character and the first character in the text occupies position 0.</li> |
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1118 * <li>1-based position in the 2D space of lines and columns, in which the first position in the |
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|
1119 * text is at (1,1).</li> |
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1120 * </ul> |
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1121 * <p> |
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|
1122 * This utility is based on positions occupied by characters, not text stream positions as in a |
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|
1123 * text editor. The distinction shows up in editors where you can put the cursor just past the |
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|
1124 * last character in a buffer; this is necessary, among other reasons, so that you can put the |
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|
1125 * edit cursor in a new (empty) buffer. For the purposes of this utility, however, there are no |
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|
1126 * character positions in an empty text string and there are no lines in an empty text string. |
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1127 * <p> |
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|
1128 * A newline character designates the end of a line and occupies a column position. |
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1129 * <p> |
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1130 * If the text ends with a character other than a newline, then the characters following the |
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|
1131 * final newline character count as a line, even though not newline-terminated. |
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1132 * <p> |
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|
1133 * <strong>Limitations:</strong> |
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1134 * <ul> |
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|
1135 * <li>Does not handle multiple character encodings correctly.</li> |
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|
1136 * <li>Treats tabs as occupying 1 column.</li> |
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|
1137 * <li>Does not handle multiple-character line termination sequences correctly.</li> |
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1138 * </ul> |
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1139 */ |
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|
1140 private static final class TextMap { |
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|
1141 |
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|
1142 // 0-based offsets of newline characters in the text, with sentinel |
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|
1143 private final int[] nlOffsets; |
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1144 |
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|
1145 // The number of characters in the text, including newlines (which count as 1). |
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|
1146 private final int textLength; |
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|
1147 |
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|
1148 // Is the final text character a newline? |
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|
1149 final boolean finalNL; |
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|
1150 |
17066
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|
1151 public TextMap(int[] nlOffsets, int textLength, boolean finalNL) { |
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|
1152 this.nlOffsets = nlOffsets; |
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|
1153 this.textLength = textLength; |
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|
1154 this.finalNL = finalNL; |
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|
1155 } |
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|
1156 |
16130
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|
1157 /** |
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|
1158 * Constructs map permitting translation between 0-based character offsets and 1-based |
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|
1159 * lines/columns. |
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|
1160 */ |
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|
1161 public static TextMap fromString(String text) { |
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|
1162 final int textLength = text.length(); |
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|
1163 final ArrayList<Integer> lines = new ArrayList<>(); |
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|
1164 lines.add(0); |
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|
1165 int offset = 0; |
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|
1166 |
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|
1167 while (offset < text.length()) { |
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|
1168 final int nlIndex = text.indexOf('\n', offset); |
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|
1169 if (nlIndex >= 0) { |
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|
1170 offset = nlIndex + 1; |
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|
1171 lines.add(offset); |
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|
1172 } else { |
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|
1173 break; |
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|
1174 } |
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|
1175 } |
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|
1176 lines.add(Integer.MAX_VALUE); |
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|
1177 |
17066
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|
1178 final int[] nlOffsets = new int[lines.size()]; |
16130
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|
1179 for (int line = 0; line < lines.size(); line++) { |
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|
1180 nlOffsets[line] = lines.get(line); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1181 } |
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|
1182 |
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|
1183 final boolean finalNL = textLength > 0 && (textLength == nlOffsets[nlOffsets.length - 2]); |
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|
1184 |
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|
1185 return new TextMap(nlOffsets, textLength, finalNL); |
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|
1186 } |
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|
1187 |
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|
1188 public static TextMap fromBytes(byte[] bytes, int byteIndex, int length, BytesDecoder bytesDecoder) { |
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|
1189 final ArrayList<Integer> lines = new ArrayList<>(); |
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|
1190 lines.add(0); |
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|
1191 |
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|
1192 bytesDecoder.decodeLines(bytes, byteIndex, length, new BytesDecoder.LineMarker() { |
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|
1193 |
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|
1194 public void markLine(int index) { |
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|
1195 lines.add(index); |
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|
1196 } |
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|
1197 }); |
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|
1198 |
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|
1199 lines.add(Integer.MAX_VALUE); |
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Truffle: byte[] sources.
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|
1200 |
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|
1201 final int[] nlOffsets = new int[lines.size()]; |
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|
1202 for (int line = 0; line < lines.size(); line++) { |
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|
1203 nlOffsets[line] = lines.get(line); |
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|
1204 } |
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|
1205 |
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|
1206 final boolean finalNL = length > 0 && (length == nlOffsets[nlOffsets.length - 2]); |
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|
1207 |
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|
1208 return new TextMap(nlOffsets, length, finalNL); |
16130
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|
1209 } |
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|
1210 |
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|
1211 /** |
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|
1212 * Converts 0-based character offset to 1-based number of the line containing the character. |
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|
1213 * |
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|
1214 * @throws IllegalArgumentException if the offset is outside the string. |
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|
1215 */ |
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|
1216 public int offsetToLine(int offset) throws IllegalArgumentException { |
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|
1217 if (offset < 0 || offset >= textLength) { |
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|
1218 throw new IllegalArgumentException("offset out of bounds"); |
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|
1219 } |
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|
1220 int line = 1; |
6f7d3f3703d3
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|
1221 while (offset >= nlOffsets[line]) { |
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|
1222 line++; |
6f7d3f3703d3
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|
1223 } |
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|
1224 return line; |
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|
1225 } |
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|
1226 |
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|
1227 /** |
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|
1228 * Converts 0-based character offset to 1-based number of the column occupied by the |
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|
1229 * character. |
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|
1230 * <p> |
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|
1231 * Tabs are not expanded; they occupy 1 column. |
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|
1232 * |
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|
1233 * @throws IllegalArgumentException if the offset is outside the string. |
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|
1234 */ |
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changeset
|
1235 public int offsetToCol(int offset) throws IllegalArgumentException { |
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|
1236 return 1 + offset - nlOffsets[offsetToLine(offset) - 1]; |
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|
1237 } |
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|
1238 |
6f7d3f3703d3
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|
1239 /** |
19690
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1240 * The number of characters in the mapped text. |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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changeset
|
1241 */ |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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|
1242 public int length() { |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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changeset
|
1243 return textLength; |
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Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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changeset
|
1244 } |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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|
1245 |
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|
1246 /** |
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|
1247 * The number of lines in the text; if characters appear after the final newline, then they |
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|
1248 * also count as a line, even though not newline-terminated. |
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|
1249 */ |
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|
1250 public int lineCount() { |
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|
1251 if (textLength == 0) { |
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diff
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|
1252 return 0; |
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|
1253 } |
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|
1254 return finalNL ? nlOffsets.length - 2 : nlOffsets.length - 1; |
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|
1255 } |
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|
1256 |
6f7d3f3703d3
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changeset
|
1257 /** |
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1258 * Converts 1-based line number to the 0-based offset of the line's first character; this |
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1259 * would be the offset of a newline if the line is empty. |
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1260 * |
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1261 * @throws IllegalArgumentException if there is no such line in the text. |
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1262 */ |
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1263 public int lineStartOffset(int line) throws IllegalArgumentException { |
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1264 if (textLength == 0 || lineOutOfRange(line)) { |
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1265 throw new IllegalArgumentException("line out of bounds"); |
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1266 } |
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1267 return nlOffsets[line - 1]; |
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1268 } |
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1269 |
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1270 /** |
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1271 * Gets the number of characters in a line, identified by 1-based line number; |
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1272 * <em>does not</em> include the final newline, if any. |
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1273 * |
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1274 * @throws IllegalArgumentException if there is no such line in the text. |
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1275 */ |
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1276 public int lineLength(int line) throws IllegalArgumentException { |
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1277 if (textLength == 0 || lineOutOfRange(line)) { |
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1278 throw new IllegalArgumentException("line out of bounds"); |
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1279 } |
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1280 if (line == nlOffsets.length - 1 && !finalNL) { |
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1281 return textLength - nlOffsets[line - 1]; |
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1282 } |
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1283 return (nlOffsets[line] - nlOffsets[line - 1]) - 1; |
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1284 |
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1285 } |
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1286 |
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1287 /** |
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1288 * Is the line number out of range. |
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1289 */ |
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1290 private boolean lineOutOfRange(int line) { |
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1291 return line <= 0 || line >= nlOffsets.length || (line == nlOffsets.length - 1 && finalNL); |
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1292 } |
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1293 |
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1294 } |
16130
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1295 |
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1296 } |