Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/Source.java @ 19695:33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Tue, 03 Mar 2015 17:11:46 -0800 |
parents | 787b5aa53401 |
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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 /** |
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33 * Representation of a guest language source code unit and its contents. Sources originate in |
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34 * several ways: |
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35 * <ul> |
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36 * <li><strong>Literal:</strong> A named text string. These are not indexed and should be considered |
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37 * value objects; equality is defined based on contents. <br> |
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38 * See {@link Source#fromText(CharSequence, String)}</li> |
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39 * <p> |
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40 * <li><strong>File:</strong> Each file is represented as a canonical object, indexed by the |
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41 * absolute, canonical path name of the file. File contents are <em>read lazily</em> and contents |
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42 * optionally <em>cached</em>. <br> |
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43 * See {@link Source#fromFileName(String)}<br> |
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44 * See {@link Source#fromFileName(String, boolean)}</li> |
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45 * <p> |
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46 * <li><strong>URL:</strong> Each URL source is represented as a canonical object, indexed by the |
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47 * URL. Contents are <em>read eagerly</em> and <em>cached</em>. <br> |
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48 * See {@link Source#fromURL(URL, String)}</li> |
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49 * <p> |
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50 * <li><strong>Reader:</strong> Contents are <em>read eagerly</em> and treated as a <em>Literal</em> |
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51 * . <br> |
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52 * See {@link Source#fromReader(Reader, String)}</li> |
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53 * <p> |
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54 * <li><strong>Pseudo File:</strong> A literal text string that can be retrieved by name as if it |
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55 * were a file, unlike literal sources; useful for testing. <br> |
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56 * See {@link Source#asPseudoFile(CharSequence, String)}</li> |
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57 * </ul> |
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58 * <p> |
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59 * <strong>File cache:</strong> |
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60 * <ol> |
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61 * <li>File content caching is optional, <em>off</em> by default.</li> |
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62 * <li>The first access to source file contents will result in the contents being read, and (if |
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63 * enabled) cached.</li> |
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64 * <li>If file contents have been cached, access to contents via {@link Source#getInputStream()} or |
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65 * {@link Source#getReader()} will be provided from the cache.</li> |
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66 * <li>Any access to file contents via the cache will result in a timestamp check and possible cache |
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67 * reload.</li> |
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68 * </ol> |
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69 */ |
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70 public abstract class Source { |
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71 |
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72 // TODO (mlvdv) consider canonicalizing and reusing SourceSection instances |
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73 // TOOD (mlvdv) connect SourceSections into a spatial tree for fast geometric lookup |
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74 |
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75 // Files and pseudo files are indexed. |
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76 private static final Map<String, WeakReference<Source>> filePathToSource = new Hashtable<>(); |
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77 |
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78 private static boolean fileCacheEnabled = true; |
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79 |
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80 /** |
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81 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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82 * then cached. |
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83 * |
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84 * @param fileName name |
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85 * @param reset forces any existing {@link Source} cache to be cleared, forcing a re-read |
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86 * @return canonical representation of the file's contents. |
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87 * @throws IOException if the file can not be read |
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88 */ |
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89 public static Source fromFileName(String fileName, boolean reset) throws IOException { |
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90 |
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91 final WeakReference<Source> nameRef = filePathToSource.get(fileName); |
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92 Source source = nameRef == null ? null : nameRef.get(); |
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93 if (source == null) { |
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94 final File file = new File(fileName); |
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95 if (!file.canRead()) { |
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96 throw new IOException("Can't read file " + fileName); |
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97 } |
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98 final String path = file.getCanonicalPath(); |
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99 final WeakReference<Source> pathRef = filePathToSource.get(path); |
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100 source = pathRef == null ? null : pathRef.get(); |
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101 if (source == null) { |
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102 source = new FileSource(file, fileName, path); |
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103 filePathToSource.put(path, new WeakReference<>(source)); |
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104 } |
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105 } |
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106 if (reset) { |
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107 source.reset(); |
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108 } |
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109 return source; |
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110 } |
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111 |
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112 /** |
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113 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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114 * then cached. |
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115 * |
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116 * @param fileName name |
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117 * @return canonical representation of the file's contents. |
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118 * @throws IOException if the file can not be read |
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119 */ |
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120 public static Source fromFileName(String fileName) throws IOException { |
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121 return fromFileName(fileName, false); |
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122 } |
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123 |
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124 /** |
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125 * Gets the canonical representation of a source file, whose contents have already been read and |
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126 * need not be read again. It is confirmed that the file resolves to a file name, so it can be |
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127 * indexed by canonical path, but it is not confirmed to be readable. |
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128 * |
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129 * @param chars textual source code already read from the file |
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130 * @param fileName |
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131 * @return canonical representation of the file's contents. |
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132 * @throws IOException if the file cannot be found |
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133 * @throws IllegalArgumentException if there is already a Source indexed under this file name |
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134 */ |
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135 public static Source fromFileName(CharSequence chars, String fileName) throws IOException, IllegalArgumentException { |
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136 final WeakReference<Source> nameRef = filePathToSource.get(fileName); |
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137 Source source = nameRef == null ? null : nameRef.get(); |
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138 if (source == null) { |
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139 final File file = new File(fileName); |
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140 // We are going to trust that the fileName is readable. |
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141 final String path = file.getCanonicalPath(); |
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142 final WeakReference<Source> pathRef = filePathToSource.get(path); |
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143 source = pathRef == null ? null : pathRef.get(); |
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144 if (source == null) { |
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145 source = new FileSource(file, fileName, path, chars); |
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146 filePathToSource.put(path, new WeakReference<>(source)); |
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147 return source; |
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148 } |
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149 } |
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150 throw new IOException("Source already exists for file:" + fileName); |
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151 } |
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152 |
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153 /** |
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154 * Creates a non-canonical source from literal text. If an already created literal source must |
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155 * be retrievable by name, use {@link #asPseudoFile(CharSequence, String)}. |
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156 * |
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157 * @param chars textual source code |
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158 * @param description a note about the origin, for error messages and debugging |
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159 * @return a newly created, non-indexed source representation |
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160 */ |
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161 public static Source fromText(CharSequence chars, String description) { |
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162 assert chars != null; |
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163 return new LiteralSource(description, chars.toString()); |
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164 } |
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165 |
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166 /** |
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167 * Creates a source whose contents will be read immediately from a URL and cached. |
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168 * |
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169 * @param url |
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170 * @param description identifies the origin, possibly useful for debugging |
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171 * @return a newly created, non-indexed source representation |
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172 * @throws IOException if reading fails |
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173 */ |
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174 public static Source fromURL(URL url, String description) throws IOException { |
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175 return URLSource.get(url, description); |
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176 } |
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177 |
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178 /** |
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179 * Creates a source whose contents will be read immediately and cached. |
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180 * |
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181 * @param reader |
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182 * @param description a note about the origin, possibly useful for debugging |
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183 * @return a newly created, non-indexed source representation |
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184 * @throws IOException if reading fails |
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185 */ |
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186 public static Source fromReader(Reader reader, String description) throws IOException { |
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187 return new LiteralSource(description, read(reader)); |
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188 } |
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189 |
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190 /** |
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191 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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192 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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193 * character indices. The returned source is then indexed by byte, not by character. |
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194 * |
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195 * @param bytes the raw bytes of the source |
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196 * @param description a note about the origin, possibly useful for debugging |
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197 * @param decoder how to decode the bytes into Java strings |
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198 * @return a newly created, non-indexed source representation |
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199 */ |
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200 public static Source fromBytes(byte[] bytes, String description, BytesDecoder decoder) { |
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201 return fromBytes(bytes, 0, bytes.length, description, decoder); |
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202 } |
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203 |
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204 /** |
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205 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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206 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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207 * character indices. The returned source is then indexed by byte, not by character. Offsets are |
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208 * relative to byteIndex. |
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209 * |
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210 * @param bytes the raw bytes of the source |
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211 * @param byteIndex where the string starts in the byte array |
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212 * @param length the length of the string in the byte array |
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213 * @param description a note about the origin, possibly useful for debugging |
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214 * @param decoder how to decode the bytes into Java strings |
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215 * @return a newly created, non-indexed source representation |
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216 */ |
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217 public static Source fromBytes(byte[] bytes, int byteIndex, int length, String description, BytesDecoder decoder) { |
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218 return new BytesSource(description, bytes, byteIndex, length, decoder); |
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219 } |
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220 |
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221 /** |
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222 * Creates a source from literal text, but which acts as a file and can be retrieved by name |
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223 * (unlike other literal sources); intended for testing. |
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224 * |
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225 * @param chars textual source code |
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226 * @param pseudoFileName string to use for indexing/lookup |
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227 * @return a newly created, source representation, canonical with respect to its name |
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228 */ |
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229 public static Source asPseudoFile(CharSequence chars, String pseudoFileName) { |
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230 final Source source = new LiteralSource(pseudoFileName, chars.toString()); |
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231 filePathToSource.put(pseudoFileName, new WeakReference<>(source)); |
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232 return source; |
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233 } |
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234 |
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235 // TODO (mlvdv) enable per-file choice whether to cache? |
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236 /** |
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237 * Enables/disables caching of file contents, <em>disabled</em> by default. Caching of sources |
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238 * created from literal text or readers is always enabled. |
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239 */ |
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240 public static void setFileCaching(boolean enabled) { |
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241 fileCacheEnabled = enabled; |
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242 } |
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243 |
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244 private static String read(Reader reader) throws IOException { |
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245 final BufferedReader bufferedReader = new BufferedReader(reader); |
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246 final StringBuilder builder = new StringBuilder(); |
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247 final char[] buffer = new char[1024]; |
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248 |
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249 while (true) { |
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250 final int n = bufferedReader.read(buffer); |
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251 if (n == -1) { |
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252 break; |
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253 } |
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254 builder.append(buffer, 0, n); |
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255 } |
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256 |
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257 return builder.toString(); |
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258 } |
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259 |
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260 Source() { |
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261 } |
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262 |
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263 private TextMap textMap = null; |
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264 |
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265 protected abstract void reset(); |
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266 |
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267 /** |
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268 * Returns the name of this resource holding a guest language program. An example would be the |
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269 * name of a guest language source code file. |
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270 * |
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271 * @return the name of the guest language program |
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272 */ |
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273 public abstract String getName(); |
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274 |
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275 /** |
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276 * Returns a short version of the name of the resource holding a guest language program (as |
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277 * described in @getName). For example, this could be just the name of the file, rather than a |
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278 * full path. |
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279 * |
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280 * @return the short name of the guest language program |
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281 */ |
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282 public abstract String getShortName(); |
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283 |
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284 /** |
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285 * The normalized, canonical name if the source is a file. |
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286 */ |
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287 public abstract String getPath(); |
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288 |
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289 /** |
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290 * The URL if the source is retrieved via URL. |
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291 */ |
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292 public abstract URL getURL(); |
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293 |
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294 /** |
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295 * Access to the source contents. |
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296 */ |
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297 public abstract Reader getReader(); |
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298 |
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299 /** |
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300 * Access to the source contents. |
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301 */ |
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302 public final InputStream getInputStream() { |
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303 return new ByteArrayInputStream(getCode().getBytes()); |
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304 } |
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305 |
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306 /** |
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307 * Returns the complete text of the code. |
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308 */ |
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309 public abstract String getCode(); |
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310 |
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311 /** |
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312 * Returns a subsection of the code test. |
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313 */ |
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314 public String getCode(int charIndex, int charLength) { |
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315 return getCode().substring(charIndex, charIndex + charLength); |
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316 } |
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317 |
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318 /** |
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319 * Gets the text (not including a possible terminating newline) in a (1-based) numbered line. |
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320 */ |
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321 public final String getCode(int lineNumber) { |
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322 checkTextMap(); |
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323 final int offset = textMap.lineStartOffset(lineNumber); |
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324 final int length = textMap.lineLength(lineNumber); |
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325 return getCode().substring(offset, offset + length); |
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326 } |
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327 |
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328 /** |
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329 * The number of text lines in the source, including empty lines; characters at the end of the |
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330 * source without a terminating newline count as a line. |
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331 */ |
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332 public final int getLineCount() { |
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333 return checkTextMap().lineCount(); |
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334 } |
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335 |
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336 /** |
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337 * Given a 0-based character offset, return the 1-based number of the line that includes the |
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338 * position. |
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339 * |
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340 * @throws IllegalArgumentException if the offset is outside the text contents |
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341 */ |
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342 public final int getLineNumber(int offset) throws IllegalArgumentException { |
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343 return checkTextMap().offsetToLine(offset); |
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344 } |
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345 |
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346 /** |
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347 * Given a 0-based character offset, return the 1-based number of the column at the position. |
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348 * |
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349 * @throws IllegalArgumentException if the offset is outside the text contents |
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350 */ |
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351 public final int getColumnNumber(int offset) throws IllegalArgumentException { |
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352 return checkTextMap().offsetToCol(offset); |
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353 } |
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354 |
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355 /** |
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356 * Given a 1-based line number, return the 0-based offset of the first character in the line. |
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357 * |
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358 * @throws IllegalArgumentException if there is no such line in the text |
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359 */ |
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360 public final int getLineStartOffset(int lineNumber) throws IllegalArgumentException { |
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361 return checkTextMap().lineStartOffset(lineNumber); |
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362 } |
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363 |
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364 /** |
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365 * The number of characters (not counting a possible terminating newline) in a (1-based) |
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366 * numbered line. |
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367 * |
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368 * @throws IllegalArgumentException if there is no such line in the text |
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369 */ |
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370 public final int getLineLength(int lineNumber) throws IllegalArgumentException { |
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371 return checkTextMap().lineLength(lineNumber); |
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372 } |
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373 |
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374 /** |
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375 * Creates a representation of a contiguous region of text in the source. |
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376 * <p> |
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377 * This method performs no checks on the validity of the arguments. |
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378 * <p> |
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379 * The resulting representation defines hash/equality around equivalent location, presuming that |
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380 * {@link Source} representations are canonical. |
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381 * |
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382 * @param identifier terse description of the region |
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383 * @param startLine 1-based line number of the first character in the section |
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384 * @param startColumn 1-based column number of the first character in the section |
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385 * @param charIndex the 0-based index of the first character of the section |
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386 * @param length the number of characters in the section |
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387 * @return newly created object representing the specified region |
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388 */ |
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389 public final SourceSection createSection(String identifier, int startLine, int startColumn, int charIndex, int length) { |
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390 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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391 } |
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392 |
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393 /** |
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394 * Creates a representation of a contiguous region of text in the source. Computes the |
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395 * {@code charIndex} value by building a {@linkplain TextMap map} of lines in the source. |
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396 * <p> |
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397 * Checks the position arguments for consistency with the source. |
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398 * <p> |
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399 * The resulting representation defines hash/equality around equivalent location, presuming that |
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400 * {@link Source} representations are canonical. |
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401 * |
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402 * @param identifier terse description of the region |
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403 * @param startLine 1-based line number of the first character in the section |
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404 * @param startColumn 1-based column number of the first character in the section |
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405 * @param length the number of characters in the section |
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406 * @return newly created object representing the specified region |
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407 * @throws IllegalArgumentException if arguments are outside the text of the source |
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408 * @throws IllegalStateException if the source is one of the "null" instances |
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409 */ |
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410 public final SourceSection createSection(String identifier, int startLine, int startColumn, int length) { |
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411 checkTextMap(); |
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412 final int lineStartOffset = textMap.lineStartOffset(startLine); |
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413 if (startColumn > textMap.lineLength(startLine)) { |
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414 throw new IllegalArgumentException("column out of range"); |
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415 } |
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416 final int startOffset = lineStartOffset + startColumn - 1; |
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417 return new DefaultSourceSection(this, identifier, startLine, startColumn, startOffset, length); |
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418 } |
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419 |
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420 /** |
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421 * Creates a representation of a contiguous region of text in the source. Computes the |
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422 * {@code (startLine, startColumn)} values by building a {@linkplain TextMap map} of lines in |
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423 * the source. |
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424 * <p> |
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425 * Checks the position arguments for consistency with the source. |
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426 * <p> |
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427 * The resulting representation defines hash/equality around equivalent location, presuming that |
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428 * {@link Source} representations are canonical. |
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429 * |
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430 * |
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431 * @param identifier terse description of the region |
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432 * @param charIndex 0-based position of the first character in the section |
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433 * @param length the number of characters in the section |
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434 * @return newly created object representing the specified region |
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435 * @throws IllegalArgumentException if either of the arguments are outside the text of the |
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436 * source |
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437 * @throws IllegalStateException if the source is one of the "null" instances |
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438 */ |
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439 public final SourceSection createSection(String identifier, int charIndex, int length) throws IllegalArgumentException { |
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440 checkRange(charIndex, length); |
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441 checkTextMap(); |
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442 final int startLine = getLineNumber(charIndex); |
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443 final int startColumn = charIndex - getLineStartOffset(startLine) + 1; |
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444 |
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445 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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446 } |
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447 |
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448 protected void checkRange(int charIndex, int length) { |
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449 if (!(charIndex >= 0 && length >= 0 && charIndex + length <= getCode().length())) { |
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450 throw new IllegalArgumentException("text positions out of range"); |
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451 } |
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452 } |
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453 |
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454 /** |
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455 * Creates a representation of a line of text in the source identified only by line number, from |
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456 * which the character information will be computed. |
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457 * |
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458 * @param identifier terse description of the line |
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459 * @param lineNumber 1-based line number of the first character in the section |
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460 * @return newly created object representing the specified line |
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461 * @throws IllegalArgumentException if the line does not exist the source |
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462 * @throws IllegalStateException if the source is one of the "null" instances |
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463 */ |
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464 public final SourceSection createSection(String identifier, int lineNumber) { |
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465 checkTextMap(); |
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466 final int charIndex = textMap.lineStartOffset(lineNumber); |
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467 final int length = textMap.lineLength(lineNumber); |
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468 return createSection(identifier, charIndex, length); |
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469 } |
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470 |
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471 /** |
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472 * Creates a representation of a line number in this source, suitable for use as a hash table |
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473 * key with equality defined to mean equivalent location. |
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474 * |
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475 * @param lineNumber a 1-based line number in this source |
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476 * @return a representation of a line in this source |
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477 */ |
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478 public final LineLocation createLineLocation(int lineNumber) { |
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479 return new LineLocationImpl(this, lineNumber); |
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480 } |
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481 |
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482 private TextMap checkTextMap() { |
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483 if (textMap == null) { |
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484 textMap = createTextMap(); |
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485 } |
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486 return textMap; |
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487 } |
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488 |
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489 protected TextMap createTextMap() { |
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490 final String code = getCode(); |
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491 if (code == null) { |
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492 throw new RuntimeException("can't read file " + getName()); |
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493 } |
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494 return TextMap.fromString(code); |
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495 } |
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496 |
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497 private static final class LiteralSource extends Source { |
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498 |
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499 private final String name; // Name used originally to describe the source |
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500 private final String code; |
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501 |
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502 public LiteralSource(String name, String code) { |
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503 this.name = name; |
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504 this.code = code; |
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505 } |
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506 |
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507 @Override |
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508 public String getName() { |
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509 return name; |
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510 } |
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511 |
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512 @Override |
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513 public String getShortName() { |
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514 return name; |
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515 } |
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516 |
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517 @Override |
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518 public String getCode() { |
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519 return code; |
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520 } |
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521 |
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522 @Override |
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523 public String getPath() { |
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524 return name; |
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525 } |
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526 |
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527 @Override |
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528 public URL getURL() { |
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529 return null; |
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|
530 } |
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|
531 |
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|
532 @Override |
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533 public Reader getReader() { |
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534 return new StringReader(code); |
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535 } |
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536 |
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537 @Override |
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538 protected void reset() { |
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539 } |
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|
540 |
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|
541 @Override |
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542 public int hashCode() { |
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543 final int prime = 31; |
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544 int result = 1; |
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545 result = prime * result + name.hashCode(); |
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546 result = prime * result + (code == null ? 0 : code.hashCode()); |
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547 return result; |
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548 } |
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549 |
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550 @Override |
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551 public boolean equals(Object obj) { |
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552 if (this == obj) { |
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|
553 return true; |
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|
554 } |
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555 if (obj == null) { |
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|
556 return false; |
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|
557 } |
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558 if (!(obj instanceof LiteralSource)) { |
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|
559 return false; |
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|
560 } |
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561 LiteralSource other = (LiteralSource) obj; |
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562 return name.equals(other.name) && code.equals(other.code); |
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563 } |
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564 |
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|
565 } |
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|
566 |
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|
567 private static final class FileSource extends Source { |
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|
568 |
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|
569 private final File file; |
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|
570 private final String name; // Name used originally to describe the source |
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|
571 private final String path; // Normalized path description of an actual file |
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|
572 |
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parents:
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|
573 private String code = null; // A cache of the file's contents |
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|
574 private long timeStamp; // timestamp of the cache in the file system |
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575 |
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|
576 public FileSource(File file, String name, String path) { |
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577 this(file, name, path, null); |
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578 } |
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579 |
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|
580 public FileSource(File file, String name, String path, CharSequence chars) { |
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|
581 this.file = file.getAbsoluteFile(); |
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582 this.name = name; |
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diff
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|
583 this.path = path; |
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|
584 if (chars != null) { |
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|
585 this.code = chars.toString(); |
787b5aa53401
Truffle: new factory method for files whose contents have already been read.
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586 } |
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587 } |
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588 |
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|
589 @Override |
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590 public String getName() { |
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591 return name; |
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|
592 } |
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|
593 |
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|
594 @Override |
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|
595 public String getShortName() { |
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|
596 return file.getName(); |
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|
597 } |
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|
598 |
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|
599 @Override |
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|
600 public String getCode() { |
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|
601 if (fileCacheEnabled) { |
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|
602 if (code == null || timeStamp != file.lastModified()) { |
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parents:
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|
603 try { |
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|
604 code = read(getReader()); |
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|
605 timeStamp = file.lastModified(); |
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|
606 } catch (IOException e) { |
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|
607 } |
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|
608 } |
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|
609 return code; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
610 } |
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|
611 try { |
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|
612 return read(new FileReader(file)); |
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613 } catch (IOException e) { |
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parents:
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|
614 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
615 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
616 } |
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|
617 |
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|
618 @Override |
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|
619 public String getPath() { |
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620 return path; |
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|
621 } |
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|
622 |
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|
623 @Override |
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|
624 public URL getURL() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
625 return null; |
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parents:
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|
626 } |
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|
627 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
628 @Override |
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parents:
diff
changeset
|
629 public Reader getReader() { |
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parents:
diff
changeset
|
630 if (code != null && timeStamp == file.lastModified()) { |
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parents:
diff
changeset
|
631 return new StringReader(code); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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changeset
|
632 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
633 try { |
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diff
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|
634 return new FileReader(file); |
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parents:
diff
changeset
|
635 } catch (FileNotFoundException e) { |
18979
bdb24e259c11
include original exception in FileSource.getReader
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18676
diff
changeset
|
636 |
bdb24e259c11
include original exception in FileSource.getReader
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18676
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|
637 throw new RuntimeException("Can't find file " + path, e); |
16068
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|
638 } |
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|
639 } |
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|
640 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
641 @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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|
642 public int hashCode() { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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diff
changeset
|
643 return path.hashCode(); |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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diff
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|
644 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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|
645 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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diff
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|
646 @Override |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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|
647 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.
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changeset
|
648 if (this == obj) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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|
649 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
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|
650 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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diff
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|
651 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.
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|
652 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.
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parents:
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|
653 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
|
654 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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|
655 return false; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
18672
diff
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|
656 } |
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
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changeset
|
657 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
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parents:
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|
658 @Override |
16068
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|
659 protected void reset() { |
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parents:
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|
660 this.code = null; |
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parents:
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|
661 } |
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parents:
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|
662 |
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parents:
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|
663 } |
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parents:
diff
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|
664 |
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parents:
diff
changeset
|
665 private static final class URLSource extends Source { |
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parents:
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|
666 |
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parents:
diff
changeset
|
667 private static final Map<URL, WeakReference<URLSource>> urlToSource = new HashMap<>(); |
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parents:
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|
668 |
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parents:
diff
changeset
|
669 public static URLSource get(URL url, String name) throws IOException { |
74e142bd2b12
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parents:
diff
changeset
|
670 WeakReference<URLSource> sourceRef = urlToSource.get(url); |
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parents:
diff
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|
671 URLSource source = sourceRef == null ? null : sourceRef.get(); |
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parents:
diff
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|
672 if (source == null) { |
74e142bd2b12
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parents:
diff
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|
673 source = new URLSource(url, name); |
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parents:
diff
changeset
|
674 urlToSource.put(url, new WeakReference<>(source)); |
74e142bd2b12
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parents:
diff
changeset
|
675 } |
74e142bd2b12
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parents:
diff
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|
676 return source; |
74e142bd2b12
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parents:
diff
changeset
|
677 } |
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parents:
diff
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|
678 |
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parents:
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|
679 private final URL url; |
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parents:
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|
680 private final String name; |
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parents:
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|
681 private String code = null; // A cache of the source contents |
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parents:
diff
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|
682 |
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parents:
diff
changeset
|
683 public URLSource(URL url, String name) throws IOException { |
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parents:
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|
684 this.url = url; |
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parents:
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|
685 this.name = name; |
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parents:
diff
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|
686 code = read(new InputStreamReader(url.openStream())); |
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parents:
diff
changeset
|
687 } |
74e142bd2b12
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parents:
diff
changeset
|
688 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
689 @Override |
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parents:
diff
changeset
|
690 public String getName() { |
74e142bd2b12
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parents:
diff
changeset
|
691 return name; |
74e142bd2b12
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parents:
diff
changeset
|
692 } |
74e142bd2b12
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parents:
diff
changeset
|
693 |
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parents:
diff
changeset
|
694 @Override |
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parents:
diff
changeset
|
695 public String getShortName() { |
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parents:
diff
changeset
|
696 return name; |
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parents:
diff
changeset
|
697 } |
74e142bd2b12
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parents:
diff
changeset
|
698 |
74e142bd2b12
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parents:
diff
changeset
|
699 @Override |
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parents:
diff
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|
700 public String getPath() { |
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parents:
diff
changeset
|
701 return url.getPath(); |
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parents:
diff
changeset
|
702 } |
74e142bd2b12
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parents:
diff
changeset
|
703 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
704 @Override |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
705 public URL getURL() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
706 return url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
707 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
708 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
709 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
710 public Reader getReader() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
711 return new StringReader(code); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
712 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
713 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
714 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
715 public String getCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
716 return code; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
717 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
718 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
719 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
720 protected void reset() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
721 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
722 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
723 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
724 |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
725 private static final class BytesSource extends Source { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
726 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
727 private final String name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
728 private final byte[] bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
729 private final int byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
730 private final int length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
731 private final BytesDecoder decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
732 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
733 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
|
734 this.name = name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
735 this.bytes = bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
736 this.byteIndex = byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
737 this.length = length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
738 this.decoder = decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
739 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
740 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
741 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
742 protected void reset() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
743 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
744 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
745 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
746 public String getName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
747 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
748 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
749 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
750 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
751 public String getShortName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
752 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
753 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
754 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
755 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
756 public String getPath() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
757 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
758 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
759 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
760 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
761 public URL getURL() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
762 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
763 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
764 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
765 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
766 public Reader getReader() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
767 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
768 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
769 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
770 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
771 public String getCode() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
772 return decoder.decode(bytes, byteIndex, length); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
773 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
774 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
775 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
776 public String getCode(int byteOffset, int codeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
777 return decoder.decode(bytes, byteIndex + byteOffset, codeLength); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
778 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
779 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
780 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
781 protected void checkRange(int charIndex, int rangeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
782 if (!(charIndex >= 0 && rangeLength >= 0 && charIndex + rangeLength <= length)) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
783 throw new IllegalArgumentException("text positions out of range"); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
784 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
785 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
786 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
787 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
788 protected TextMap createTextMap() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
789 return TextMap.fromBytes(bytes, byteIndex, length, decoder); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
790 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
791 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
792 |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
793 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
|
794 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
795 private final Source source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
796 private final String identifier; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
797 private final int startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
798 private final int startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
799 private final int charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
800 private final int charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
801 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
802 /** |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
803 * 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
|
804 * guest language program's text. |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
805 * <p> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
806 * 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
|
807 * <ul> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
808 * <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
|
809 * source file is at position {@code (1,1)}.</li> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
810 * <li><b>character index</b>: 0-based offset of the character from the beginning of the |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
811 * source, so the first character in a file is at index {@code 0}.</li> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
812 * </ul> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
813 * The <b>newline</b> that terminates each line counts as a single character for the purpose |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
814 * of a character index. The (row,column) coordinates of a newline character should never |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
815 * appear in a text section. |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
816 * <p> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
817 * |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
818 * @param source object representing the complete source program that contains this section |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
819 * @param identifier an identifier used when printing the section |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
820 * @param startLine the 1-based number of the start line of the section |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
821 * @param startColumn the 1-based number of the start column of the section |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
822 * @param charIndex the 0-based index of the first character of the section |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
823 * @param charLength the length of the section in number of characters |
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 public DefaultSourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
826 this.source = source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
827 this.identifier = identifier; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
828 this.startLine = startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
829 this.startColumn = startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
830 this.charIndex = charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
831 this.charLength = charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
832 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
833 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
834 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
835 public Source getSource() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
836 return source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
837 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
838 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
839 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
840 public int getStartLine() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
841 return startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
842 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
843 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
844 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
845 public LineLocation getLineLocation() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
846 return source.createLineLocation(startLine); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
847 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
848 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
849 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
850 public int getStartColumn() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
851 return startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
852 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
853 |
19695
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:
19694
diff
changeset
|
854 public int getEndLine() { |
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:
19694
diff
changeset
|
855 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:
19694
diff
changeset
|
856 } |
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:
19694
diff
changeset
|
857 |
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:
19694
diff
changeset
|
858 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:
19694
diff
changeset
|
859 return source.getColumnNumber(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:
19694
diff
changeset
|
860 } |
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:
19694
diff
changeset
|
861 |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
862 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
863 public int getCharIndex() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
864 return charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
865 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
866 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
867 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
868 public int getCharLength() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
869 return charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
870 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
871 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
872 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
873 public int getCharEndIndex() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
874 return charIndex + charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
875 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
876 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
877 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
878 public String getIdentifier() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
879 return identifier; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
880 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
881 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
882 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
883 public String getCode() { |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
884 return getSource().getCode(charIndex, charLength); |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
885 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
886 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
887 @Override |
18163
c88ab4f1f04a
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
diff
changeset
|
888 public String getShortDescription() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
889 return String.format("%s:%d", source.getShortName(), startLine); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
890 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
891 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
892 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
893 public String toString() { |
16140
7109baa7b9eb
Truffle/Source: SourceSection.toString() is now equivalent to getCode()
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
16130
diff
changeset
|
894 return getCode(); |
16068
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 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
897 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
898 public int hashCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
899 final int prime = 31; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
900 int result = 1; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
901 result = prime * result + charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
902 result = prime * result + charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
903 result = prime * result + ((identifier == null) ? 0 : identifier.hashCode()); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
904 result = prime * result + ((source == null) ? 0 : source.hashCode()); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
905 result = prime * result + startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
906 result = prime * result + startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
907 return result; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
908 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
909 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
910 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
911 public boolean equals(Object obj) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
912 if (this == obj) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
913 return true; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
914 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
915 if (obj == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
916 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
917 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
918 if (!(obj instanceof DefaultSourceSection)) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
919 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
920 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
921 DefaultSourceSection other = (DefaultSourceSection) obj; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
922 if (charIndex != other.charIndex) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
923 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
924 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
925 if (charLength != other.charLength) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
926 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
927 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
928 if (identifier == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
929 if (other.identifier != null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
930 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
931 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
932 } else if (!identifier.equals(other.identifier)) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
933 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
934 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
935 if (source == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
936 if (other.source != null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
937 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
938 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
939 } else if (!source.equals(other.source)) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
940 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
941 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
942 if (startColumn != other.startColumn) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
943 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
944 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
945 if (startLine != other.startLine) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
946 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
947 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
948 return true; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
949 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
950 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
951 |
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952 private static final class LineLocationImpl implements LineLocation { |
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953 private final Source source; |
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954 private final int line; |
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955 |
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956 public LineLocationImpl(Source source, int line) { |
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957 assert source != null; |
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958 this.source = source; |
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959 this.line = line; |
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960 } |
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961 |
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|
962 @Override |
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963 public Source getSource() { |
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|
964 return source; |
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965 } |
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966 |
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967 @Override |
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968 public int getLineNumber() { |
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969 return line; |
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|
970 } |
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971 |
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972 @Override |
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973 public String getShortDescription() { |
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974 return source.getShortName() + ":" + line; |
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975 } |
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976 |
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977 @Override |
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978 public String toString() { |
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979 return "Line[" + getShortDescription() + "]"; |
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980 } |
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981 |
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982 @Override |
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983 public int hashCode() { |
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984 final int prime = 31; |
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985 int result = 1; |
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986 result = prime * result + line; |
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987 result = prime * result + source.hashCode(); |
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988 return result; |
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989 } |
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|
990 |
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|
991 @Override |
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992 public boolean equals(Object obj) { |
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993 if (this == obj) { |
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|
994 return true; |
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|
995 } |
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996 if (obj == null) { |
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|
997 return false; |
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|
998 } |
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999 if (!(obj instanceof LineLocationImpl)) { |
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|
1000 return false; |
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|
1001 } |
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1002 LineLocationImpl other = (LineLocationImpl) obj; |
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1003 if (line != other.line) { |
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|
1004 return false; |
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|
1005 } |
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|
1006 return source.equals(other.source); |
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|
1007 } |
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1008 |
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1009 } |
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1010 |
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1011 /** |
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1012 * A utility for converting between coordinate systems in a string of text interspersed with |
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1013 * newline characters. The coordinate systems are: |
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1014 * <ul> |
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1015 * <li>0-based character offset from the beginning of the text, where newline characters count |
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1016 * as a single character and the first character in the text occupies position 0.</li> |
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1017 * <li>1-based position in the 2D space of lines and columns, in which the first position in the |
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1018 * text is at (1,1).</li> |
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1019 * </ul> |
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1020 * <p> |
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1021 * This utility is based on positions occupied by characters, not text stream positions as in a |
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1022 * text editor. The distinction shows up in editors where you can put the cursor just past the |
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1023 * last character in a buffer; this is necessary, among other reasons, so that you can put the |
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1024 * edit cursor in a new (empty) buffer. For the purposes of this utility, however, there are no |
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1025 * character positions in an empty text string and there are no lines in an empty text string. |
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1026 * <p> |
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1027 * A newline character designates the end of a line and occupies a column position. |
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1028 * <p> |
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1029 * If the text ends with a character other than a newline, then the characters following the |
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1030 * final newline character count as a line, even though not newline-terminated. |
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1031 * <p> |
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1032 * <strong>Limitations:</strong> |
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1033 * <ul> |
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1034 * <li>Does not handle multiple character encodings correctly.</li> |
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1035 * <li>Treats tabs as occupying 1 column.</li> |
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1036 * <li>Does not handle multiple-character line termination sequences correctly.</li> |
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1037 * </ul> |
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1038 */ |
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1039 private static final class TextMap { |
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1040 |
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1041 // 0-based offsets of newline characters in the text, with sentinel |
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1042 private final int[] nlOffsets; |
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1043 |
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1044 // The number of characters in the text, including newlines (which count as 1). |
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1045 private final int textLength; |
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1046 |
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1047 // Is the final text character a newline? |
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1048 final boolean finalNL; |
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1049 |
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1050 public TextMap(int[] nlOffsets, int textLength, boolean finalNL) { |
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1051 this.nlOffsets = nlOffsets; |
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1052 this.textLength = textLength; |
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1053 this.finalNL = finalNL; |
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1054 } |
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1055 |
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1056 /** |
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1057 * Constructs map permitting translation between 0-based character offsets and 1-based |
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1058 * lines/columns. |
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1059 */ |
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|
1060 public static TextMap fromString(String text) { |
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1061 final int textLength = text.length(); |
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1062 final ArrayList<Integer> lines = new ArrayList<>(); |
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|
1063 lines.add(0); |
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1064 int offset = 0; |
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1065 |
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parents:
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changeset
|
1066 while (offset < text.length()) { |
6f7d3f3703d3
Truffle/Source:
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parents:
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diff
changeset
|
1067 final int nlIndex = text.indexOf('\n', offset); |
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parents:
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diff
changeset
|
1068 if (nlIndex >= 0) { |
6f7d3f3703d3
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parents:
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diff
changeset
|
1069 offset = nlIndex + 1; |
6f7d3f3703d3
Truffle/Source:
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parents:
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diff
changeset
|
1070 lines.add(offset); |
6f7d3f3703d3
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parents:
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diff
changeset
|
1071 } else { |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1072 break; |
6f7d3f3703d3
Truffle/Source:
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parents:
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diff
changeset
|
1073 } |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1074 } |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1075 lines.add(Integer.MAX_VALUE); |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1076 |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1077 final int[] nlOffsets = new int[lines.size()]; |
16130
6f7d3f3703d3
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parents:
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diff
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|
1078 for (int line = 0; line < lines.size(); line++) { |
6f7d3f3703d3
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parents:
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diff
changeset
|
1079 nlOffsets[line] = lines.get(line); |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1080 } |
16130
6f7d3f3703d3
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diff
changeset
|
1081 |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1082 final boolean finalNL = textLength > 0 && (textLength == nlOffsets[nlOffsets.length - 2]); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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diff
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|
1083 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
1084 return new TextMap(nlOffsets, textLength, finalNL); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1085 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1086 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1087 public static TextMap fromBytes(byte[] bytes, int byteIndex, int length, BytesDecoder bytesDecoder) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1088 final ArrayList<Integer> lines = new ArrayList<>(); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1089 lines.add(0); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1090 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1091 bytesDecoder.decodeLines(bytes, byteIndex, length, new BytesDecoder.LineMarker() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1092 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1093 public void markLine(int index) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1094 lines.add(index); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1095 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1096 }); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1097 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1098 lines.add(Integer.MAX_VALUE); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1099 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
1100 final int[] nlOffsets = new int[lines.size()]; |
0bcefb0f8488
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Chris Seaton <chris.seaton@oracle.com>
parents:
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|
1101 for (int line = 0; line < lines.size(); line++) { |
0bcefb0f8488
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|
1102 nlOffsets[line] = lines.get(line); |
0bcefb0f8488
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parents:
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|
1103 } |
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Truffle: byte[] sources.
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parents:
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changeset
|
1104 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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changeset
|
1105 final boolean finalNL = length > 0 && (length == nlOffsets[nlOffsets.length - 2]); |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1106 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1107 return new TextMap(nlOffsets, length, finalNL); |
16130
6f7d3f3703d3
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diff
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|
1108 } |
6f7d3f3703d3
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|
1109 |
6f7d3f3703d3
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|
1110 /** |
6f7d3f3703d3
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changeset
|
1111 * Converts 0-based character offset to 1-based number of the line containing the character. |
6f7d3f3703d3
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parents:
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changeset
|
1112 * |
6f7d3f3703d3
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|
1113 * @throws IllegalArgumentException if the offset is outside the string. |
6f7d3f3703d3
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changeset
|
1114 */ |
6f7d3f3703d3
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changeset
|
1115 public int offsetToLine(int offset) throws IllegalArgumentException { |
6f7d3f3703d3
Truffle/Source:
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parents:
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changeset
|
1116 if (offset < 0 || offset >= textLength) { |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1117 throw new IllegalArgumentException("offset out of bounds"); |
6f7d3f3703d3
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changeset
|
1118 } |
6f7d3f3703d3
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changeset
|
1119 int line = 1; |
6f7d3f3703d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1120 while (offset >= nlOffsets[line]) { |
6f7d3f3703d3
Truffle/Source:
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parents:
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diff
changeset
|
1121 line++; |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1122 } |
6f7d3f3703d3
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|
1123 return line; |
6f7d3f3703d3
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|
1124 } |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1125 |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1126 /** |
6f7d3f3703d3
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changeset
|
1127 * Converts 0-based character offset to 1-based number of the column occupied by the |
6f7d3f3703d3
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diff
changeset
|
1128 * character. |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1129 * <p> |
6f7d3f3703d3
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changeset
|
1130 * Tabs are not expanded; they occupy 1 column. |
6f7d3f3703d3
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|
1131 * |
6f7d3f3703d3
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|
1132 * @throws IllegalArgumentException if the offset is outside the string. |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1133 */ |
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changeset
|
1134 public int offsetToCol(int offset) throws IllegalArgumentException { |
6f7d3f3703d3
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diff
changeset
|
1135 return 1 + offset - nlOffsets[offsetToLine(offset) - 1]; |
6f7d3f3703d3
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|
1136 } |
6f7d3f3703d3
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|
1137 |
6f7d3f3703d3
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changeset
|
1138 /** |
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|
1139 * The number of lines in the text; if characters appear after the final newline, then they |
6f7d3f3703d3
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parents:
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diff
changeset
|
1140 * also count as a line, even though not newline-terminated. |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1141 */ |
6f7d3f3703d3
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parents:
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diff
changeset
|
1142 public int lineCount() { |
6f7d3f3703d3
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diff
changeset
|
1143 if (textLength == 0) { |
6f7d3f3703d3
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diff
changeset
|
1144 return 0; |
6f7d3f3703d3
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diff
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|
1145 } |
6f7d3f3703d3
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|
1146 return finalNL ? nlOffsets.length - 2 : nlOffsets.length - 1; |
6f7d3f3703d3
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|
1147 } |
6f7d3f3703d3
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|
1148 |
6f7d3f3703d3
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|
1149 /** |
6f7d3f3703d3
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diff
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|
1150 * Converts 1-based line number to the 0-based offset of the line's first character; this |
6f7d3f3703d3
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diff
changeset
|
1151 * would be the offset of a newline if the line is empty. |
6f7d3f3703d3
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diff
changeset
|
1152 * |
6f7d3f3703d3
Truffle/Source:
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diff
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|
1153 * @throws IllegalArgumentException if there is no such line in the text. |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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changeset
|
1154 */ |
6f7d3f3703d3
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diff
changeset
|
1155 public int lineStartOffset(int line) throws IllegalArgumentException { |
6f7d3f3703d3
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diff
changeset
|
1156 if (textLength == 0 || lineOutOfRange(line)) { |
6f7d3f3703d3
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diff
changeset
|
1157 throw new IllegalArgumentException("line out of bounds"); |
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|
1158 } |
6f7d3f3703d3
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|
1159 return nlOffsets[line - 1]; |
6f7d3f3703d3
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|
1160 } |
6f7d3f3703d3
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|
1161 |
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|
1162 /** |
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|
1163 * Gets the number of characters in a line, identified by 1-based line number; |
6f7d3f3703d3
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|
1164 * <em>does not</em> include the final newline, if any. |
6f7d3f3703d3
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changeset
|
1165 * |
6f7d3f3703d3
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|
1166 * @throws IllegalArgumentException if there is no such line in the text. |
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|
1167 */ |
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changeset
|
1168 public int lineLength(int line) throws IllegalArgumentException { |
6f7d3f3703d3
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changeset
|
1169 if (textLength == 0 || lineOutOfRange(line)) { |
6f7d3f3703d3
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changeset
|
1170 throw new IllegalArgumentException("line out of bounds"); |
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|
1171 } |
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|
1172 if (line == nlOffsets.length - 1 && !finalNL) { |
6f7d3f3703d3
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changeset
|
1173 return textLength - nlOffsets[line - 1]; |
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|
1174 } |
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changeset
|
1175 return (nlOffsets[line] - nlOffsets[line - 1]) - 1; |
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|
1176 |
6f7d3f3703d3
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changeset
|
1177 } |
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|
1178 |
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changeset
|
1179 /** |
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|
1180 * Is the line number out of range. |
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1181 */ |
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parents:
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1182 private boolean lineOutOfRange(int line) { |
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parents:
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1183 return line <= 0 || line >= nlOffsets.length || (line == nlOffsets.length - 1 && finalNL); |
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1184 } |
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1185 |
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1186 } |
16130
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parents:
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1187 |
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1188 } |