Mercurial > hg > truffle
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/Source.java @ 18979:bdb24e259c11
include original exception in FileSource.getReader
author | Lukas Stadler <lukas.stadler@oracle.com> |
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date | Tue, 27 Jan 2015 23:12:58 +0100 |
parents | 1c12cf39281d |
children | ae0eb836e6f4 |
rev | line source |
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1 /* |
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2 * Copyright (c) 2013, 2014, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.oracle.truffle.api.source; |
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26 |
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27 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 * Creates a non-canonical source from literal text. If an already created literal source must |
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126 * be retrievable by name, use {@link #asPseudoFile(CharSequence, String)}. |
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127 * |
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128 * @param chars textual source code |
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129 * @param description a note about the origin, for error messages and debugging |
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130 * @return a newly created, non-indexed source representation |
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131 */ |
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132 public static Source fromText(CharSequence chars, String description) { |
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133 assert chars != null; |
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134 return new LiteralSource(description, chars.toString()); |
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135 } |
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136 |
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137 /** |
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138 * Creates a source whose contents will be read immediately from a URL and cached. |
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139 * |
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140 * @param url |
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141 * @param description identifies the origin, possibly useful for debugging |
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142 * @return a newly created, non-indexed source representation |
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143 * @throws IOException if reading fails |
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144 */ |
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145 public static Source fromURL(URL url, String description) throws IOException { |
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146 return URLSource.get(url, description); |
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147 } |
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148 |
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149 /** |
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150 * Creates a source whose contents will be read immediately and cached. |
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151 * |
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152 * @param reader |
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153 * @param description a note about the origin, possibly useful for debugging |
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154 * @return a newly created, non-indexed source representation |
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155 * @throws IOException if reading fails |
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156 */ |
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157 public static Source fromReader(Reader reader, String description) throws IOException { |
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158 return new LiteralSource(description, read(reader)); |
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159 } |
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160 |
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161 /** |
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162 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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163 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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164 * character indices. The returned source is then indexed by byte, not by character. |
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165 * |
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166 * @param bytes the raw bytes of the source |
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167 * @param description a note about the origin, possibly useful for debugging |
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168 * @param decoder how to decode the bytes into Java strings |
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169 * @return a newly created, non-indexed source representation |
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170 */ |
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171 public static Source fromBytes(byte[] bytes, String description, BytesDecoder decoder) { |
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172 return fromBytes(bytes, 0, bytes.length, description, decoder); |
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173 } |
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174 |
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175 /** |
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176 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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177 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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178 * character indices. The returned source is then indexed by byte, not by character. Offsets are |
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179 * relative to byteIndex. |
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180 * |
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181 * @param bytes the raw bytes of the source |
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182 * @param byteIndex where the string starts in the byte array |
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183 * @param length the length of the string in the byte array |
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184 * @param description a note about the origin, possibly useful for debugging |
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185 * @param decoder how to decode the bytes into Java strings |
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186 * @return a newly created, non-indexed source representation |
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187 */ |
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188 public static Source fromBytes(byte[] bytes, int byteIndex, int length, String description, BytesDecoder decoder) { |
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189 return new BytesSource(description, bytes, byteIndex, length, decoder); |
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190 } |
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191 |
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192 /** |
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193 * Creates a source from literal text, but which acts as a file and can be retrieved by name |
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194 * (unlike other literal sources); intended for testing. |
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195 * |
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196 * @param chars textual source code |
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197 * @param pseudoFileName string to use for indexing/lookup |
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198 * @return a newly created, source representation, canonical with respect to its name |
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199 */ |
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200 public static Source asPseudoFile(CharSequence chars, String pseudoFileName) { |
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201 final Source source = new LiteralSource(pseudoFileName, chars.toString()); |
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202 filePathToSource.put(pseudoFileName, new WeakReference<>(source)); |
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203 return source; |
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204 } |
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205 |
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206 // TODO (mlvdv) enable per-file choice whether to cache? |
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207 /** |
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208 * Enables/disables caching of file contents, <em>disabled</em> by default. Caching of sources |
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209 * created from literal text or readers is always enabled. |
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210 */ |
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211 public static void setFileCaching(boolean enabled) { |
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212 fileCacheEnabled = enabled; |
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213 } |
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214 |
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215 private static String read(Reader reader) throws IOException { |
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216 final BufferedReader bufferedReader = new BufferedReader(reader); |
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217 final StringBuilder builder = new StringBuilder(); |
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218 final char[] buffer = new char[1024]; |
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219 |
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220 while (true) { |
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221 final int n = bufferedReader.read(buffer); |
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222 if (n == -1) { |
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223 break; |
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224 } |
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225 builder.append(buffer, 0, n); |
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226 } |
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227 |
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228 return builder.toString(); |
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229 } |
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230 |
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231 Source() { |
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232 } |
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233 |
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234 private TextMap textMap = null; |
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235 |
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236 protected abstract void reset(); |
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237 |
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238 /** |
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239 * Returns the name of this resource holding a guest language program. An example would be the |
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240 * name of a guest language source code file. |
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241 * |
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242 * @return the name of the guest language program |
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243 */ |
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244 public abstract String getName(); |
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245 |
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246 /** |
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247 * Returns a short version of the name of the resource holding a guest language program (as |
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248 * described in @getName). For example, this could be just the name of the file, rather than a |
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249 * full path. |
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250 * |
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251 * @return the short name of the guest language program |
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252 */ |
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253 public abstract String getShortName(); |
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254 |
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255 /** |
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256 * The normalized, canonical name if the source is a file. |
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257 */ |
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258 public abstract String getPath(); |
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259 |
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260 /** |
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261 * The URL if the source is retrieved via URL. |
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262 */ |
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263 public abstract URL getURL(); |
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264 |
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265 /** |
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266 * Access to the source contents. |
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267 */ |
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268 public abstract Reader getReader(); |
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269 |
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270 /** |
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271 * Access to the source contents. |
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272 */ |
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273 public final InputStream getInputStream() { |
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274 return new ByteArrayInputStream(getCode().getBytes()); |
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275 } |
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276 |
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277 /** |
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278 * Return the complete text of the code. |
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279 */ |
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280 public abstract String getCode(); |
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281 |
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282 public String getCode(int charIndex, int charLength) { |
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283 return getCode().substring(charIndex, charIndex + charLength); |
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284 } |
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285 |
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286 /** |
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287 * Gets the text (not including a possible terminating newline) in a (1-based) numbered line. |
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288 */ |
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289 public final String getCode(int lineNumber) { |
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290 checkTextMap(); |
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291 final int offset = textMap.lineStartOffset(lineNumber); |
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292 final int length = textMap.lineLength(lineNumber); |
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293 return getCode().substring(offset, offset + length); |
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294 } |
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295 |
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296 /** |
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297 * The number of text lines in the source, including empty lines; characters at the end of the |
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298 * source without a terminating newline count as a line. |
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299 */ |
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300 public final int getLineCount() { |
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301 return checkTextMap().lineCount(); |
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302 } |
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303 |
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304 /** |
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305 * Given a 0-based character offset, return the 1-based number of the line that includes the |
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306 * position. |
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307 * |
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308 * @throws IllegalArgumentException if the offset is outside the text contents |
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309 */ |
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310 public final int getLineNumber(int offset) throws IllegalArgumentException { |
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311 return checkTextMap().offsetToLine(offset); |
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312 } |
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313 |
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314 /** |
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315 * Given a 0-based character offset, return the 1-based number of the column at the position. |
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316 * |
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317 * @throws IllegalArgumentException if the offset is outside the text contents |
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318 */ |
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319 public final int getColumnNumber(int offset) throws IllegalArgumentException { |
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320 return checkTextMap().offsetToCol(offset); |
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321 } |
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322 |
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323 /** |
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324 * Given a 1-based line number, return the 0-based offset of the first character in the line. |
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325 * |
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326 * @throws IllegalArgumentException if there is no such line in the text |
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327 */ |
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328 public final int getLineStartOffset(int lineNumber) throws IllegalArgumentException { |
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329 return checkTextMap().lineStartOffset(lineNumber); |
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330 } |
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331 |
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332 /** |
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333 * The number of characters (not counting a possible terminating newline) in a (1-based) |
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334 * numbered line. |
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335 * |
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336 * @throws IllegalArgumentException if there is no such line in the text |
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337 */ |
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338 public final int getLineLength(int lineNumber) throws IllegalArgumentException { |
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339 return checkTextMap().lineLength(lineNumber); |
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340 } |
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341 |
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342 /** |
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343 * Creates a representation of a contiguous region of text in the source. |
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344 * <p> |
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345 * This method performs no checks on the validity of the arguments. |
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346 * <p> |
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347 * The resulting representation defines hash/equality around equivalent location, presuming that |
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348 * {@link Source} representations are canonical. |
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349 * |
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350 * @param identifier terse description of the region |
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351 * @param startLine 1-based line number of the first character in the section |
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352 * @param startColumn 1-based column number of the first character in the section |
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353 * @param charIndex the 0-based index of the first character of the section |
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354 * @param length the number of characters in the section |
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355 * @return newly created object representing the specified region |
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356 */ |
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357 public final SourceSection createSection(String identifier, int startLine, int startColumn, int charIndex, int length) { |
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358 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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359 } |
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360 |
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361 /** |
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362 * Creates a representation of a contiguous region of text in the source. Computes the |
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363 * {@code charIndex} value by building a {@linkplain TextMap map} of lines in the source. |
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364 * <p> |
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365 * Checks the position arguments for consistency with the source. |
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366 * <p> |
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367 * The resulting representation defines hash/equality around equivalent location, presuming that |
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368 * {@link Source} representations are canonical. |
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369 * |
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370 * @param identifier terse description of the region |
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371 * @param startLine 1-based line number of the first character in the section |
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372 * @param startColumn 1-based column number of the first character in the section |
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373 * @param length the number of characters in the section |
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374 * @return newly created object representing the specified region |
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375 * @throws IllegalArgumentException if arguments are outside the text of the source |
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376 * @throws IllegalStateException if the source is one of the "null" instances |
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377 */ |
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378 public final SourceSection createSection(String identifier, int startLine, int startColumn, int length) { |
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379 checkTextMap(); |
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380 final int lineStartOffset = textMap.lineStartOffset(startLine); |
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381 if (startColumn > textMap.lineLength(startLine)) { |
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382 throw new IllegalArgumentException("column out of range"); |
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383 } |
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384 final int startOffset = lineStartOffset + startColumn - 1; |
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385 return new DefaultSourceSection(this, identifier, startLine, startColumn, startOffset, length); |
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386 } |
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387 |
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388 /** |
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389 * Creates a representation of a contiguous region of text in the source. Computes the |
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390 * {@code (startLine, startColumn)} values by building a {@linkplain TextMap map} of lines in |
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391 * the source. |
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392 * <p> |
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393 * Checks the position arguments for consistency with the source. |
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394 * <p> |
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395 * The resulting representation defines hash/equality around equivalent location, presuming that |
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396 * {@link Source} representations are canonical. |
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397 * |
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398 * |
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399 * @param identifier terse description of the region |
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400 * @param charIndex 0-based position of the first character in the section |
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401 * @param length the number of characters in the section |
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402 * @return newly created object representing the specified region |
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403 * @throws IllegalArgumentException if either of the arguments are outside the text of the |
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404 * source |
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405 * @throws IllegalStateException if the source is one of the "null" instances |
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406 */ |
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407 public final SourceSection createSection(String identifier, int charIndex, int length) throws IllegalArgumentException { |
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408 checkRange(charIndex, length); |
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409 checkTextMap(); |
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410 final int startLine = getLineNumber(charIndex); |
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411 final int startColumn = charIndex - getLineStartOffset(startLine) + 1; |
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412 |
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413 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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414 } |
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415 |
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416 protected void checkRange(int charIndex, int length) { |
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417 if (!(charIndex >= 0 && length >= 0 && charIndex + length <= getCode().length())) { |
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418 throw new IllegalArgumentException("text positions out of range"); |
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419 } |
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420 } |
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421 |
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422 /** |
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423 * Creates a representation of a line of text in the source identified only by line number, from |
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424 * which the character information will be computed. |
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425 * |
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426 * @param identifier terse description of the line |
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427 * @param lineNumber 1-based line number of the first character in the section |
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428 * @return newly created object representing the specified line |
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429 * @throws IllegalArgumentException if the line does not exist the source |
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430 * @throws IllegalStateException if the source is one of the "null" instances |
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431 */ |
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432 public final SourceSection createSection(String identifier, int lineNumber) { |
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433 checkTextMap(); |
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434 final int charIndex = textMap.lineStartOffset(lineNumber); |
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435 final int length = textMap.lineLength(lineNumber); |
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436 return createSection(identifier, charIndex, length); |
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437 } |
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438 |
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439 /** |
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440 * Creates a representation of a line number in this source, suitable for use as a hash table |
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441 * key with equality defined to mean equivalent location. |
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442 * |
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443 * @param lineNumber a 1-based line number in this source |
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444 * @return a representation of a line in this source |
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445 */ |
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446 public final LineLocation createLineLocation(int lineNumber) { |
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447 return new LineLocationImpl(this, lineNumber); |
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448 } |
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449 |
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450 private TextMap checkTextMap() { |
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451 if (textMap == null) { |
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452 textMap = createTextMap(); |
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453 } |
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454 return textMap; |
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455 } |
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456 |
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457 protected TextMap createTextMap() { |
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458 final String code = getCode(); |
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459 if (code == null) { |
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460 throw new RuntimeException("can't read file " + getName()); |
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461 } |
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462 return TextMap.fromString(code); |
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463 } |
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464 |
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465 private static final class LiteralSource extends Source { |
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466 |
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467 private final String name; // Name used originally to describe the source |
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468 private final String code; |
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469 |
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470 public LiteralSource(String name, String code) { |
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471 this.name = name; |
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472 this.code = code; |
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473 } |
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474 |
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|
475 @Override |
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476 public String getName() { |
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477 return name; |
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|
478 } |
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479 |
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|
480 @Override |
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481 public String getShortName() { |
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482 return name; |
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|
483 } |
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484 |
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485 @Override |
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486 public String getCode() { |
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487 return code; |
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488 } |
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489 |
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|
490 @Override |
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491 public String getPath() { |
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492 return name; |
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|
493 } |
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494 |
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|
495 @Override |
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496 public URL getURL() { |
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497 return null; |
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498 } |
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499 |
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|
500 @Override |
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501 public Reader getReader() { |
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502 return new StringReader(code); |
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503 } |
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|
504 |
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|
505 @Override |
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506 protected void reset() { |
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507 } |
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|
508 |
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|
509 @Override |
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|
510 public int hashCode() { |
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511 final int prime = 31; |
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512 int result = 1; |
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513 result = prime * result + name.hashCode(); |
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514 result = prime * result + (code == null ? 0 : code.hashCode()); |
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|
515 return result; |
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|
516 } |
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|
517 |
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parents:
diff
changeset
|
518 @Override |
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|
519 public boolean equals(Object obj) { |
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|
520 if (this == obj) { |
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|
521 return true; |
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|
522 } |
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|
523 if (obj == null) { |
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|
524 return false; |
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|
525 } |
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|
526 if (!(obj instanceof LiteralSource)) { |
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|
527 return false; |
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|
528 } |
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|
529 LiteralSource other = (LiteralSource) obj; |
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530 return name.equals(other.name) && code.equals(other.code); |
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|
531 } |
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|
532 |
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|
533 } |
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|
534 |
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535 private static final class FileSource extends Source { |
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|
536 |
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537 private final File file; |
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538 private final String name; // Name used originally to describe the source |
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539 private final String path; // Normalized path description of an actual file |
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|
540 |
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|
541 private String code = null; // A cache of the file's contents |
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542 private long timeStamp; // timestamp of the cache in the file system |
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|
543 |
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544 public FileSource(File file, String name, String path) { |
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545 this.file = file; |
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546 this.name = name; |
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547 this.path = path; |
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|
548 } |
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|
549 |
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|
550 @Override |
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|
551 public String getName() { |
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|
552 return name; |
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diff
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|
553 } |
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|
554 |
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|
555 @Override |
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diff
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|
556 public String getShortName() { |
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|
557 return file.getName(); |
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|
558 } |
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|
559 |
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parents:
diff
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|
560 @Override |
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diff
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561 public String getCode() { |
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562 if (fileCacheEnabled) { |
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|
563 if (code == null || timeStamp != file.lastModified()) { |
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|
564 try { |
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|
565 code = read(getReader()); |
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parents:
diff
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|
566 timeStamp = file.lastModified(); |
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|
567 } catch (IOException e) { |
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parents:
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|
568 } |
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parents:
diff
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|
569 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
570 return code; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
571 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
572 try { |
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573 return read(new FileReader(file)); |
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|
574 } catch (IOException e) { |
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|
575 } |
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|
576 return null; |
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parents:
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|
577 } |
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|
578 |
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diff
changeset
|
579 @Override |
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parents:
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|
580 public String getPath() { |
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parents:
diff
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|
581 return path; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
582 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
583 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
584 @Override |
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parents:
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|
585 public URL getURL() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
586 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
587 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
588 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
589 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
590 public Reader getReader() { |
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diff
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|
591 if (code != null && timeStamp == file.lastModified()) { |
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diff
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|
592 return new StringReader(code); |
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parents:
diff
changeset
|
593 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
594 try { |
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parents:
diff
changeset
|
595 return new FileReader(file); |
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parents:
diff
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|
596 } catch (FileNotFoundException e) { |
18979
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diff
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|
597 |
bdb24e259c11
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|
598 throw new RuntimeException("Can't find file " + path, e); |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
599 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
600 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
601 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
602 @Override |
18676
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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|
603 public int hashCode() { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
604 return path.hashCode(); |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
605 } |
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
|
606 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
607 @Override |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
608 public boolean equals(Object obj) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
609 if (this == obj) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
610 return true; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
611 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
612 if (obj instanceof FileSource) { |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
613 FileSource other = (FileSource) obj; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
614 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
|
615 } |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
616 return false; |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
617 } |
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
|
618 |
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
619 @Override |
16068
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parents:
diff
changeset
|
620 protected void reset() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
621 this.code = null; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
622 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
623 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
624 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
625 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
626 private static final class URLSource extends Source { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
627 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
628 private static final Map<URL, WeakReference<URLSource>> urlToSource = new HashMap<>(); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
629 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
630 public static URLSource get(URL url, String name) throws IOException { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
631 WeakReference<URLSource> sourceRef = urlToSource.get(url); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
632 URLSource source = sourceRef == null ? null : sourceRef.get(); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
633 if (source == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
634 source = new URLSource(url, name); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
635 urlToSource.put(url, new WeakReference<>(source)); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
636 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
637 return source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
638 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
639 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
640 private final URL url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
641 private final String name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
642 private String code = null; // A cache of the source contents |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
643 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
644 public URLSource(URL url, String name) throws IOException { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
645 this.url = url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
646 this.name = name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
647 code = read(new InputStreamReader(url.openStream())); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
648 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
649 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
650 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
651 public String getName() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
652 return name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
653 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
654 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
655 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
656 public String getShortName() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
657 return name; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
658 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
659 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
660 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
661 public String getPath() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
662 return url.getPath(); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
663 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
664 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
665 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
666 public URL getURL() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
667 return url; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
668 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
669 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
670 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
671 public Reader getReader() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
672 return new StringReader(code); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
673 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
674 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
675 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
676 public String getCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
677 return code; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
678 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
679 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
680 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
681 protected void reset() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
682 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
683 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
684 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
685 |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
686 private static final class BytesSource extends Source { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
687 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
688 private final String name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
689 private final byte[] bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
690 private final int byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
691 private final int length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
692 private final BytesDecoder decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
693 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
694 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
|
695 this.name = name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
696 this.bytes = bytes; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
697 this.byteIndex = byteIndex; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
698 this.length = length; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
699 this.decoder = decoder; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
700 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
701 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
702 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
703 protected void reset() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
704 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
705 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
706 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
707 public String getName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
708 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
709 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
710 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
711 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
712 public String getShortName() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
713 return name; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
714 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
715 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
716 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
717 public String getPath() { |
0bcefb0f8488
Truffle: byte[] sources.
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718 return name; |
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|
719 } |
0bcefb0f8488
Truffle: byte[] sources.
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|
720 |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
721 @Override |
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parents:
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|
722 public URL getURL() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
723 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
724 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
725 |
0bcefb0f8488
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parents:
16989
diff
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|
726 @Override |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
727 public Reader getReader() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
728 return null; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
729 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
730 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
731 @Override |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
732 public String getCode() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
733 return decoder.decode(bytes, byteIndex, length); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
734 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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changeset
|
735 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
736 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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changeset
|
737 public String getCode(int byteOffset, int codeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
738 return decoder.decode(bytes, byteIndex + byteOffset, codeLength); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
739 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
740 |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
741 @Override |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
742 protected void checkRange(int charIndex, int rangeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
743 if (!(charIndex >= 0 && rangeLength >= 0 && charIndex + rangeLength <= length)) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
744 throw new IllegalArgumentException("text positions out of range"); |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
745 } |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
746 } |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
747 |
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Truffle: byte[] sources.
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parents:
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diff
changeset
|
748 @Override |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
749 protected TextMap createTextMap() { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
750 return TextMap.fromBytes(bytes, byteIndex, length, decoder); |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
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|
751 } |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
752 } |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
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|
753 |
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74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
754 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
|
755 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
756 private final Source source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
757 private final String identifier; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
758 private final int startLine; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
759 private final int startColumn; |
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diff
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|
760 private final int charIndex; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
761 private final int charLength; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
762 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
763 /** |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
764 * 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
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|
765 * guest language program's text. |
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Truffle/Source: major API revision
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|
766 * <p> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
767 * The starting location of the section is specified using two different coordinate: |
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parents:
diff
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|
768 * <ul> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
769 * <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>
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diff
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|
770 * source file is at position {@code (1,1)}.</li> |
74e142bd2b12
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parents:
diff
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|
771 * <li><b>character index</b>: 0-based offset of the character from the beginning of the |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
772 * 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>
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|
773 * </ul> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
774 * The <b>newline</b> that terminates each line counts as a single character for the purpose |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
775 * of a character index. The (row,column) coordinates of a newline character should never |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
776 * appear in a text section. |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
777 * <p> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
778 * |
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diff
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|
779 * @param source object representing the complete source program that contains this section |
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parents:
diff
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|
780 * @param identifier an identifier used when printing the section |
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parents:
diff
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|
781 * @param startLine the 1-based number of the start line of the section |
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parents:
diff
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|
782 * @param startColumn the 1-based number of the start column of the section |
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parents:
diff
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|
783 * @param charIndex the 0-based index of the first character of the section |
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parents:
diff
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|
784 * @param charLength the length of the section in number of characters |
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parents:
diff
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|
785 */ |
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parents:
diff
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|
786 public DefaultSourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
787 this.source = source; |
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parents:
diff
changeset
|
788 this.identifier = identifier; |
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diff
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|
789 this.startLine = startLine; |
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diff
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|
790 this.startColumn = startColumn; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
791 this.charIndex = charIndex; |
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|
792 this.charLength = charLength; |
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|
793 } |
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|
794 |
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diff
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|
795 @Override |
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Doug Simon <doug.simon@oracle.com>
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17066
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|
796 public Source getSource() { |
16068
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|
797 return source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
798 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
799 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
800 @Override |
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|
801 public int getStartLine() { |
16068
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|
802 return startLine; |
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diff
changeset
|
803 } |
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|
804 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
805 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
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|
806 public LineLocation getLineLocation() { |
16068
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diff
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|
807 return source.createLineLocation(startLine); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
808 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
809 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
810 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
diff
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|
811 public int getStartColumn() { |
16068
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diff
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|
812 return startColumn; |
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parents:
diff
changeset
|
813 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
814 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
815 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
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parents:
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|
816 public int getCharIndex() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
817 return charIndex; |
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changeset
|
818 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
819 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
820 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
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|
821 public int getCharLength() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
822 return charLength; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
823 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
824 |
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parents:
diff
changeset
|
825 @Override |
18163
c88ab4f1f04a
re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
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parents:
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|
826 public int getCharEndIndex() { |
16068
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diff
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|
827 return charIndex + charLength; |
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parents:
diff
changeset
|
828 } |
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parents:
diff
changeset
|
829 |
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diff
changeset
|
830 @Override |
18163
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
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|
831 public String getIdentifier() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
832 return identifier; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
833 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
834 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
835 @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
|
836 public String getCode() { |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
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|
837 return getSource().getCode(charIndex, charLength); |
16068
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parents:
diff
changeset
|
838 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
839 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
840 @Override |
18163
c88ab4f1f04a
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Doug Simon <doug.simon@oracle.com>
parents:
17066
diff
changeset
|
841 public String getShortDescription() { |
16068
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
842 return String.format("%s:%d", source.getShortName(), startLine); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
843 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
844 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
845 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
846 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
|
847 return getCode(); |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
848 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
849 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
850 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
851 public int hashCode() { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
852 final int prime = 31; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
853 int result = 1; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
854 result = prime * result + charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
855 result = prime * result + charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
856 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
|
857 result = prime * result + ((source == null) ? 0 : source.hashCode()); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
858 result = prime * result + startColumn; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
859 result = prime * result + startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
860 return result; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
861 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
862 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
863 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
864 public boolean equals(Object obj) { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
865 if (this == obj) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
866 return true; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
867 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
868 if (obj == null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
869 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
870 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
871 if (!(obj instanceof DefaultSourceSection)) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
872 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
873 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
874 DefaultSourceSection other = (DefaultSourceSection) obj; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
875 if (charIndex != other.charIndex) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
876 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
877 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
878 if (charLength != other.charLength) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
879 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
880 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
881 if (identifier == null) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
882 if (other.identifier != null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
883 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
884 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
885 } else if (!identifier.equals(other.identifier)) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
886 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
887 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
888 if (source == null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
889 if (other.source != null) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
890 return false; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
891 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
892 } 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
|
893 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
894 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
895 if (startColumn != other.startColumn) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
896 return false; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
897 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
898 if (startLine != other.startLine) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
899 return false; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
900 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
901 return true; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
902 } |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
903 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
904 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
905 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
906 private static final class LineLocationImpl implements LineLocation { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
907 private final Source source; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
908 private final int line; |
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 public LineLocationImpl(Source source, int line) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
911 assert source != null; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
912 this.source = source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
913 this.line = line; |
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 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
916 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
917 public Source getSource() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
918 return source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
919 } |
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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 @Override |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
922 public int getLineNumber() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
923 return line; |
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
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|
925 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
926 @Override |
18485
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
927 public String getShortDescription() { |
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
928 return source.getShortName() + ":" + line; |
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
929 } |
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
930 |
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
931 @Override |
16068
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parents:
diff
changeset
|
932 public String toString() { |
18485
e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18163
diff
changeset
|
933 return "Line[" + getShortDescription() + "]"; |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
934 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
935 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
936 @Override |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
937 public int hashCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
938 final int prime = 31; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
939 int result = 1; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
940 result = prime * result + line; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
941 result = prime * result + source.hashCode(); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
942 return result; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
943 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
944 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
945 @Override |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
946 public boolean equals(Object obj) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
947 if (this == obj) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
948 return true; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
949 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
950 if (obj == null) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
951 return false; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
952 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
953 if (!(obj instanceof LineLocationImpl)) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
954 return false; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
955 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
956 LineLocationImpl other = (LineLocationImpl) obj; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
957 if (line != other.line) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
958 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
959 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
960 return source.equals(other.source); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
961 } |
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|
962 |
16130
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|
963 } |
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diff
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|
964 |
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|
965 /** |
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|
966 * A utility for converting between coordinate systems in a string of text interspersed with |
6f7d3f3703d3
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|
967 * newline characters. The coordinate systems are: |
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parents:
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|
968 * <ul> |
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|
969 * <li>0-based character offset from the beginning of the text, where newline characters count |
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|
970 * as a single character and the first character in the text occupies position 0.</li> |
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|
971 * <li>1-based position in the 2D space of lines and columns, in which the first position in the |
6f7d3f3703d3
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|
972 * text is at (1,1).</li> |
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|
973 * </ul> |
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|
974 * <p> |
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|
975 * This utility is based on positions occupied by characters, not text stream positions as in a |
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parents:
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|
976 * text editor. The distinction shows up in editors where you can put the cursor just past the |
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parents:
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|
977 * last character in a buffer; this is necessary, among other reasons, so that you can put the |
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|
978 * edit cursor in a new (empty) buffer. For the purposes of this utility, however, there are no |
6f7d3f3703d3
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parents:
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diff
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|
979 * character positions in an empty text string and there are no lines in an empty text string. |
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|
980 * <p> |
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|
981 * A newline character designates the end of a line and occupies a column position. |
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|
982 * <p> |
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|
983 * If the text ends with a character other than a newline, then the characters following the |
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|
984 * final newline character count as a line, even though not newline-terminated. |
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|
985 * <p> |
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|
986 * <strong>Limitations:</strong> |
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|
987 * <ul> |
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|
988 * <li>Does not handle multiple character encodings correctly.</li> |
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changeset
|
989 * <li>Treats tabs as occupying 1 column.</li> |
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|
990 * <li>Does not handle multiple-character line termination sequences correctly.</li> |
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|
991 * </ul> |
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|
992 */ |
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|
993 private static final class TextMap { |
6f7d3f3703d3
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diff
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|
994 |
6f7d3f3703d3
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diff
changeset
|
995 // 0-based offsets of newline characters in the text, with sentinel |
6f7d3f3703d3
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|
996 private final int[] nlOffsets; |
6f7d3f3703d3
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|
997 |
6f7d3f3703d3
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changeset
|
998 // The number of characters in the text, including newlines (which count as 1). |
6f7d3f3703d3
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|
999 private final int textLength; |
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|
1000 |
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|
1001 // Is the final text character a newline? |
6f7d3f3703d3
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changeset
|
1002 final boolean finalNL; |
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diff
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|
1003 |
17066
0bcefb0f8488
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|
1004 public TextMap(int[] nlOffsets, int textLength, boolean finalNL) { |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1005 this.nlOffsets = nlOffsets; |
0bcefb0f8488
Truffle: byte[] sources.
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|
1006 this.textLength = textLength; |
0bcefb0f8488
Truffle: byte[] sources.
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|
1007 this.finalNL = finalNL; |
0bcefb0f8488
Truffle: byte[] sources.
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|
1008 } |
0bcefb0f8488
Truffle: byte[] sources.
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|
1009 |
16130
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|
1010 /** |
6f7d3f3703d3
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diff
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|
1011 * Constructs map permitting translation between 0-based character offsets and 1-based |
6f7d3f3703d3
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parents:
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diff
changeset
|
1012 * lines/columns. |
6f7d3f3703d3
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parents:
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diff
changeset
|
1013 */ |
17066
0bcefb0f8488
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|
1014 public static TextMap fromString(String text) { |
0bcefb0f8488
Truffle: byte[] sources.
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|
1015 final int textLength = text.length(); |
16130
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|
1016 final ArrayList<Integer> lines = new ArrayList<>(); |
6f7d3f3703d3
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diff
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|
1017 lines.add(0); |
6f7d3f3703d3
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|
1018 int offset = 0; |
6f7d3f3703d3
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|
1019 |
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|
1020 while (offset < text.length()) { |
6f7d3f3703d3
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diff
changeset
|
1021 final int nlIndex = text.indexOf('\n', offset); |
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diff
changeset
|
1022 if (nlIndex >= 0) { |
6f7d3f3703d3
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changeset
|
1023 offset = nlIndex + 1; |
6f7d3f3703d3
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changeset
|
1024 lines.add(offset); |
6f7d3f3703d3
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diff
changeset
|
1025 } else { |
6f7d3f3703d3
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diff
changeset
|
1026 break; |
6f7d3f3703d3
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diff
changeset
|
1027 } |
6f7d3f3703d3
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diff
changeset
|
1028 } |
6f7d3f3703d3
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diff
changeset
|
1029 lines.add(Integer.MAX_VALUE); |
6f7d3f3703d3
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diff
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|
1030 |
17066
0bcefb0f8488
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|
1031 final int[] nlOffsets = new int[lines.size()]; |
16130
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|
1032 for (int line = 0; line < lines.size(); line++) { |
6f7d3f3703d3
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diff
changeset
|
1033 nlOffsets[line] = lines.get(line); |
16068
74e142bd2b12
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parents:
diff
changeset
|
1034 } |
16130
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|
1035 |
17066
0bcefb0f8488
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|
1036 final boolean finalNL = textLength > 0 && (textLength == nlOffsets[nlOffsets.length - 2]); |
0bcefb0f8488
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|
1037 |
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|
1038 return new TextMap(nlOffsets, textLength, finalNL); |
0bcefb0f8488
Truffle: byte[] sources.
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|
1039 } |
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Truffle: byte[] sources.
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|
1040 |
0bcefb0f8488
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|
1041 public static TextMap fromBytes(byte[] bytes, int byteIndex, int length, BytesDecoder bytesDecoder) { |
0bcefb0f8488
Truffle: byte[] sources.
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|
1042 final ArrayList<Integer> lines = new ArrayList<>(); |
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changeset
|
1043 lines.add(0); |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1044 |
0bcefb0f8488
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|
1045 bytesDecoder.decodeLines(bytes, byteIndex, length, new BytesDecoder.LineMarker() { |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1046 |
0bcefb0f8488
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changeset
|
1047 public void markLine(int index) { |
0bcefb0f8488
Truffle: byte[] sources.
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diff
changeset
|
1048 lines.add(index); |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1049 } |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1050 }); |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1051 |
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changeset
|
1052 lines.add(Integer.MAX_VALUE); |
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Truffle: byte[] sources.
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changeset
|
1053 |
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|
1054 final int[] nlOffsets = new int[lines.size()]; |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1055 for (int line = 0; line < lines.size(); line++) { |
0bcefb0f8488
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changeset
|
1056 nlOffsets[line] = lines.get(line); |
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Truffle: byte[] sources.
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changeset
|
1057 } |
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changeset
|
1058 |
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changeset
|
1059 final boolean finalNL = length > 0 && (length == nlOffsets[nlOffsets.length - 2]); |
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Truffle: byte[] sources.
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changeset
|
1060 |
0bcefb0f8488
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|
1061 return new TextMap(nlOffsets, length, finalNL); |
16130
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|
1062 } |
6f7d3f3703d3
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|
1063 |
6f7d3f3703d3
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changeset
|
1064 /** |
6f7d3f3703d3
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changeset
|
1065 * 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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diff
changeset
|
1066 * |
6f7d3f3703d3
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diff
changeset
|
1067 * @throws IllegalArgumentException if the offset is outside the string. |
6f7d3f3703d3
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changeset
|
1068 */ |
6f7d3f3703d3
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diff
changeset
|
1069 public int offsetToLine(int offset) throws IllegalArgumentException { |
6f7d3f3703d3
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changeset
|
1070 if (offset < 0 || offset >= textLength) { |
6f7d3f3703d3
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diff
changeset
|
1071 throw new IllegalArgumentException("offset out of bounds"); |
6f7d3f3703d3
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changeset
|
1072 } |
6f7d3f3703d3
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changeset
|
1073 int line = 1; |
6f7d3f3703d3
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diff
changeset
|
1074 while (offset >= nlOffsets[line]) { |
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1075 line++; |
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1076 } |
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1077 return line; |
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1078 } |
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1079 |
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1080 /** |
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1081 * Converts 0-based character offset to 1-based number of the column occupied by the |
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1082 * character. |
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1083 * <p> |
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1084 * Tabs are not expanded; they occupy 1 column. |
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1085 * |
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1086 * @throws IllegalArgumentException if the offset is outside the string. |
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1087 */ |
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1088 public int offsetToCol(int offset) throws IllegalArgumentException { |
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1089 return 1 + offset - nlOffsets[offsetToLine(offset) - 1]; |
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1090 } |
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1091 |
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1092 /** |
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1093 * The number of lines in the text; if characters appear after the final newline, then they |
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1094 * also count as a line, even though not newline-terminated. |
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1095 */ |
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1096 public int lineCount() { |
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1097 if (textLength == 0) { |
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1098 return 0; |
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1099 } |
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1100 return finalNL ? nlOffsets.length - 2 : nlOffsets.length - 1; |
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1101 } |
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1102 |
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1103 /** |
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1104 * Converts 1-based line number to the 0-based offset of the line's first character; this |
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1105 * would be the offset of a newline if the line is empty. |
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1106 * |
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1107 * @throws IllegalArgumentException if there is no such line in the text. |
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1108 */ |
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1109 public int lineStartOffset(int line) throws IllegalArgumentException { |
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1110 if (textLength == 0 || lineOutOfRange(line)) { |
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1111 throw new IllegalArgumentException("line out of bounds"); |
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1112 } |
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1113 return nlOffsets[line - 1]; |
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1114 } |
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1115 |
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1116 /** |
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1117 * Gets the number of characters in a line, identified by 1-based line number; |
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1118 * <em>does not</em> include the final newline, if any. |
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1119 * |
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1120 * @throws IllegalArgumentException if there is no such line in the text. |
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1121 */ |
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1122 public int lineLength(int line) throws IllegalArgumentException { |
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1123 if (textLength == 0 || lineOutOfRange(line)) { |
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1124 throw new IllegalArgumentException("line out of bounds"); |
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1125 } |
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1126 if (line == nlOffsets.length - 1 && !finalNL) { |
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1127 return textLength - nlOffsets[line - 1]; |
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1128 } |
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1129 return (nlOffsets[line] - nlOffsets[line - 1]) - 1; |
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1130 |
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1131 } |
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1132 |
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1133 /** |
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1134 * Is the line number out of range. |
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1135 */ |
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1136 private boolean lineOutOfRange(int line) { |
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1137 return line <= 0 || line >= nlOffsets.length || (line == nlOffsets.length - 1 && finalNL); |
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1138 } |
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1139 |
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1140 } |
16130
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1141 |
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1142 } |