Mercurial > hg > truffle
annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/source/Source.java @ 21292:8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Mon, 11 May 2015 17:27:08 -0700 |
parents | 70bbc530a2d3 |
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1 /* |
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2 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 package com.oracle.truffle.api.source; |
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26 |
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27 import java.io.*; |
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28 import java.lang.ref.*; |
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29 import java.net.*; |
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30 import java.util.*; |
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31 |
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32 import com.oracle.truffle.api.instrument.*; |
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33 |
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34 /** |
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35 * Representation of a guest language source code unit and its contents. Sources originate in |
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36 * several ways: |
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37 * <ul> |
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38 * <li><strong>Literal:</strong> An anonymous text string: not named and not indexed. These should |
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39 * be considered value objects; equality is defined based on contents.<br> |
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40 * See {@link Source#fromText(CharSequence, String)}</li> |
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41 * <p> |
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42 * <li><strong>Named Literal:</strong> A text string that can be retrieved by name as if it were a |
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43 * file, but without any assumption that the name is related to a file path. Creating a new literal |
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44 * with an already existing name will replace its predecessor in the index.<br> |
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45 * See {@link Source#fromNamedText(CharSequence, String)}<br> |
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46 * See {@link Source#find(String)}</li> |
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47 * <p> |
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48 * <li><strong>File:</strong> Each file is represented as a canonical object, indexed by the |
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49 * absolute, canonical path name of the file. File contents are <em>read lazily</em> and contents |
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50 * optionally <em>cached</em>. <br> |
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51 * See {@link Source#fromFileName(String)}<br> |
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52 * See {@link Source#fromFileName(String, boolean)}<br> |
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53 * See {@link Source#find(String)}</li> |
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54 * <p> |
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55 * <li><strong>URL:</strong> Each URL source is represented as a canonical object, indexed by the |
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56 * URL. Contents are <em>read eagerly</em> and <em>cached</em>. <br> |
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57 * See {@link Source#fromURL(URL, String)}<br> |
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58 * See {@link Source#find(String)}</li> |
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59 * <p> |
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60 * <li><strong>Reader:</strong> Contents are <em>read eagerly</em> and treated as an anonymous |
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61 * (non-indexed) <em>Literal</em> . <br> |
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62 * See {@link Source#fromReader(Reader, String)}</li> |
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63 * <p> |
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64 * <li><strong>Sub-Source:</strong> A representation of the contents of a sub-range of another |
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65 * {@link Source}.<br> |
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66 * See @link {@link Source#subSource(Source, int, int)}<br> |
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67 * See @link {@link Source#subSource(Source, int)}</li> |
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68 * <p> |
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69 * <li><strong>AppendableSource:</strong> Literal contents are provided by the client, |
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70 * incrementally, after the instance is created.<br> |
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71 * See {@link Source#fromAppendableText(String)}<br> |
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72 * See {@link Source#fromNamedAppendableText(String)}</li> |
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73 * </ul> |
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74 * <p> |
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75 * <strong>File cache:</strong> |
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76 * <ol> |
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77 * <li>File content caching is optional, <em>on</em> by default.</li> |
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78 * <li>The first access to source file contents will result in the contents being read, and (if |
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79 * enabled) cached.</li> |
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80 * <li>If file contents have been cached, access to contents via {@link Source#getInputStream()} or |
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81 * {@link Source#getReader()} will be provided from the cache.</li> |
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82 * <li>Any access to file contents via the cache will result in a timestamp check and possible cache |
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83 * reload.</li> |
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84 * </ol> |
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85 * <p> |
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86 * |
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87 * @see SourceTag |
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88 * @see SourceListener |
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89 */ |
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90 public abstract class Source { |
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91 |
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92 // TODO (mlvdv) consider canonicalizing and reusing SourceSection instances |
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93 // TOOD (mlvdv) connect SourceSections into a spatial tree for fast geometric lookup |
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94 |
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95 public enum Tags implements SourceTag { |
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96 |
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97 /** |
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98 * From bytes. |
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99 */ |
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100 FROM_BYTES("bytes", "read from bytes"), |
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101 |
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102 /** |
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103 * Read from a file. |
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104 */ |
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105 FROM_FILE("file", "read from a file"), |
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106 |
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107 /** |
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108 * From literal text. |
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109 */ |
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110 FROM_LITERAL("literal", "from literal text"), |
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111 |
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112 /** |
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113 * From a {@linkplain java.io.Reader Reader}. |
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114 */ |
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115 FROM_READER("reader", "read from a Java Reader"), |
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116 |
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117 /** |
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118 * Read from a URL. |
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119 */ |
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120 FROM_URL("URL", "read from a URL"); |
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121 |
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122 private final String name; |
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123 private final String description; |
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124 |
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125 private Tags(String name, String description) { |
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126 this.name = name; |
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127 this.description = description; |
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128 } |
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129 |
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130 public String getName() { |
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131 return name; |
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132 } |
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133 |
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134 public String getDescription() { |
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135 return description; |
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136 } |
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137 |
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138 } |
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139 |
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140 /** |
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141 * All Sources that have been created. |
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142 */ |
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143 private static final List<WeakReference<Source>> allSources = Collections.synchronizedList(new ArrayList<WeakReference<Source>>()); |
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144 |
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145 /** |
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146 * Index of all named sources. |
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147 */ |
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148 private static final Map<String, WeakReference<Source>> nameToSource = new HashMap<>(); |
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149 |
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150 private static boolean fileCacheEnabled = true; |
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151 |
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152 private static final List<SourceListener> sourceListeners = new ArrayList<>(); |
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153 |
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154 /** |
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155 * Locates an existing instance by the name under which it was indexed. |
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156 */ |
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157 public static Source find(String name) { |
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158 final WeakReference<Source> nameRef = nameToSource.get(name); |
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159 return nameRef == null ? null : nameRef.get(); |
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160 } |
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161 |
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162 /** |
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163 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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164 * then cached. |
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165 * |
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166 * @param fileName name |
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167 * @param reset forces any existing {@link Source} cache to be cleared, forcing a re-read |
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168 * @return canonical representation of the file's contents. |
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169 * @throws IOException if the file can not be read |
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170 */ |
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171 public static Source fromFileName(String fileName, boolean reset) throws IOException { |
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172 |
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173 final WeakReference<Source> nameRef = nameToSource.get(fileName); |
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174 Source source = nameRef == null ? null : nameRef.get(); |
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175 if (source == null) { |
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176 final File file = new File(fileName); |
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177 if (!file.canRead()) { |
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178 throw new IOException("Can't read file " + fileName); |
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179 } |
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180 final String path = file.getCanonicalPath(); |
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181 final WeakReference<Source> pathRef = nameToSource.get(path); |
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182 source = pathRef == null ? null : pathRef.get(); |
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183 if (source == null) { |
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184 source = new FileSource(file, fileName, path); |
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185 nameToSource.put(path, new WeakReference<>(source)); |
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186 } |
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187 } |
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188 if (reset) { |
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189 source.reset(); |
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190 } |
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191 notifyNewSource(source).tagAs(Tags.FROM_FILE); |
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192 return source; |
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193 } |
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194 |
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195 /** |
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196 * Gets the canonical representation of a source file, whose contents will be read lazily and |
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197 * then cached. |
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198 * |
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199 * @param fileName name |
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200 * @return canonical representation of the file's contents. |
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201 * @throws IOException if the file can not be read |
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202 */ |
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203 public static Source fromFileName(String fileName) throws IOException { |
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204 return fromFileName(fileName, false); |
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205 } |
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206 |
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207 /** |
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208 * Gets the canonical representation of a source file, whose contents have already been read and |
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209 * need not be read again. It is confirmed that the file resolves to a file name, so it can be |
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210 * indexed by canonical path. It is not confirmed that the text supplied agrees with the file's |
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211 * contents or even whether the file is readable. |
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212 * |
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213 * @param chars textual source code already read from the file |
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214 * @param fileName |
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215 * @return canonical representation of the file's contents. |
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216 * @throws IOException if the file cannot be found |
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217 */ |
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218 public static Source fromFileName(CharSequence chars, String fileName) throws IOException { |
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219 |
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220 final WeakReference<Source> nameRef = nameToSource.get(fileName); |
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221 Source source = nameRef == null ? null : nameRef.get(); |
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222 if (source == null) { |
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223 final File file = new File(fileName); |
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224 // We are going to trust that the fileName is readable. |
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225 final String path = file.getCanonicalPath(); |
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226 final WeakReference<Source> pathRef = nameToSource.get(path); |
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227 source = pathRef == null ? null : pathRef.get(); |
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228 if (source == null) { |
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229 source = new FileSource(file, fileName, path, chars); |
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230 nameToSource.put(path, new WeakReference<>(source)); |
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231 } |
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232 } |
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233 notifyNewSource(source).tagAs(Tags.FROM_FILE); |
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234 return source; |
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235 } |
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236 |
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237 /** |
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238 * Creates an anonymous source from literal text: not named and not indexed. |
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239 * |
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240 * @param chars textual source code |
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241 * @param description a note about the origin, for error messages and debugging |
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242 * @return a newly created, non-indexed source representation |
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243 */ |
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244 public static Source fromText(CharSequence chars, String description) { |
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245 assert chars != null; |
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246 final LiteralSource source = new LiteralSource(description, chars.toString()); |
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247 notifyNewSource(source).tagAs(Tags.FROM_LITERAL); |
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248 return source; |
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249 } |
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250 |
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251 /** |
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252 * Creates an anonymous source from literal text that is provided incrementally after creation: |
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253 * not named and not indexed. |
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254 * |
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255 * @param description a note about the origin, for error messages and debugging |
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256 * @return a newly created, non-indexed, initially empty, appendable source representation |
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257 */ |
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258 public static Source fromAppendableText(String description) { |
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259 final Source source = new AppendableLiteralSource(description); |
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260 notifyNewSource(source).tagAs(Tags.FROM_LITERAL); |
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261 return source; |
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262 } |
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263 |
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264 /** |
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265 * Creates a source from literal text that can be retrieved by name, with no assumptions about |
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266 * the structure or meaning of the name. If the name is already in the index, the new instance |
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267 * will replace the previously existing instance in the index. |
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268 * |
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269 * @param chars textual source code |
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270 * @param name string to use for indexing/lookup |
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271 * @return a newly created, source representation |
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272 */ |
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273 public static Source fromNamedText(CharSequence chars, String name) { |
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274 final Source source = new LiteralSource(name, chars.toString()); |
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275 nameToSource.put(name, new WeakReference<>(source)); |
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276 notifyNewSource(source).tagAs(Tags.FROM_LITERAL); |
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277 return source; |
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278 } |
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279 |
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280 /** |
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281 * Creates a source from literal text that is provided incrementally after creation and which |
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282 * can be retrieved by name, with no assumptions about the structure or meaning of the name. If |
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283 * the name is already in the index, the new instance will replace the previously existing |
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284 * instance in the index. |
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285 * |
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286 * @param name string to use for indexing/lookup |
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287 * @return a newly created, indexed, initially empty, appendable source representation |
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288 */ |
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289 public static Source fromNamedAppendableText(String name) { |
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290 final Source source = new AppendableLiteralSource(name); |
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291 nameToSource.put(name, new WeakReference<>(source)); |
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292 notifyNewSource(source).tagAs(Tags.FROM_LITERAL); |
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293 return source; |
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294 } |
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295 |
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296 /** |
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297 * Creates a {@linkplain Source Source instance} that represents the contents of a sub-range of |
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298 * an existing {@link Source}. |
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299 * |
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300 * @param base an existing Source instance |
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301 * @param baseCharIndex 0-based index of the first character of the sub-range |
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302 * @param length the number of characters in the sub-range |
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303 * @return a new instance representing a sub-range of another Source |
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304 * @throws IllegalArgumentException if the specified sub-range is not contained in the base |
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305 */ |
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306 public static Source subSource(Source base, int baseCharIndex, int length) { |
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307 final SubSource subSource = SubSource.create(base, baseCharIndex, length); |
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308 return subSource; |
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309 } |
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310 |
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311 /** |
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312 * Creates a {@linkplain Source Source instance} that represents the contents of a sub-range at |
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313 * the end of an existing {@link Source}. |
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314 * |
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315 * @param base an existing Source instance |
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316 * @param baseCharIndex 0-based index of the first character of the sub-range |
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317 * @return a new instance representing a sub-range at the end of another Source |
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318 * @throws IllegalArgumentException if the index is out of range |
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319 */ |
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320 public static Source subSource(Source base, int baseCharIndex) { |
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321 return subSource(base, baseCharIndex, base.getLength() - baseCharIndex); |
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322 } |
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323 |
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324 /** |
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325 * Creates a source whose contents will be read immediately from a URL and cached. |
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326 * |
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327 * @param url |
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328 * @param description identifies the origin, possibly useful for debugging |
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329 * @return a newly created, non-indexed source representation |
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330 * @throws IOException if reading fails |
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331 */ |
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332 public static Source fromURL(URL url, String description) throws IOException { |
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333 final URLSource source = URLSource.get(url, description); |
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334 notifyNewSource(source).tagAs(Tags.FROM_URL); |
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335 return source; |
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336 } |
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337 |
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338 /** |
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339 * Creates a source whose contents will be read immediately and cached. |
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340 * |
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341 * @param reader |
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342 * @param description a note about the origin, possibly useful for debugging |
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343 * @return a newly created, non-indexed source representation |
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344 * @throws IOException if reading fails |
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345 */ |
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346 public static Source fromReader(Reader reader, String description) throws IOException { |
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347 final LiteralSource source = new LiteralSource(description, read(reader)); |
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348 notifyNewSource(source).tagAs(Tags.FROM_READER); |
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349 return source; |
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350 } |
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351 |
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352 /** |
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353 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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354 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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355 * character indices. The returned source is then indexed by byte, not by character. |
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356 * |
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357 * @param bytes the raw bytes of the source |
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358 * @param description a note about the origin, possibly useful for debugging |
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359 * @param decoder how to decode the bytes into Java strings |
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360 * @return a newly created, non-indexed source representation |
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361 */ |
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362 public static Source fromBytes(byte[] bytes, String description, BytesDecoder decoder) { |
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363 return fromBytes(bytes, 0, bytes.length, description, decoder); |
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364 } |
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365 |
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366 /** |
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367 * Creates a source from raw bytes. This can be used if the encoding of strings in your language |
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368 * is not compatible with Java strings, or if your parser returns byte indices instead of |
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369 * character indices. The returned source is then indexed by byte, not by character. Offsets are |
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370 * relative to byteIndex. |
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371 * |
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372 * @param bytes the raw bytes of the source |
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373 * @param byteIndex where the string starts in the byte array |
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374 * @param length the length of the string in the byte array |
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375 * @param description a note about the origin, possibly useful for debugging |
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376 * @param decoder how to decode the bytes into Java strings |
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377 * @return a newly created, non-indexed source representation |
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378 */ |
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379 public static Source fromBytes(byte[] bytes, int byteIndex, int length, String description, BytesDecoder decoder) { |
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380 final BytesSource source = new BytesSource(description, bytes, byteIndex, length, decoder); |
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381 notifyNewSource(source).tagAs(Tags.FROM_BYTES); |
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382 return source; |
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383 } |
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384 |
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385 // TODO (mlvdv) enable per-file choice whether to cache? |
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386 /** |
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387 * Enables/disables caching of file contents, <em>disabled</em> by default. Caching of sources |
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388 * created from literal text or readers is always enabled. |
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389 */ |
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390 public static void setFileCaching(boolean enabled) { |
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391 fileCacheEnabled = enabled; |
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392 } |
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393 |
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394 /** |
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395 * Returns all {@link Source}s holding a particular {@link SyntaxTag}, or the whole collection |
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396 * of Sources if the specified tag is {@code null}. |
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397 * |
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398 * @return A collection of Sources containing the given tag. |
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399 */ |
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400 public static Collection<Source> findSourcesTaggedAs(SourceTag tag) { |
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401 final List<Source> taggedSources = new ArrayList<>(); |
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402 synchronized (allSources) { |
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403 for (WeakReference<Source> ref : allSources) { |
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404 Source source = ref.get(); |
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405 if (source != null) { |
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406 if (tag == null || source.isTaggedAs(tag)) { |
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407 taggedSources.add(ref.get()); |
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408 } |
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409 } |
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410 } |
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411 } |
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412 return taggedSources; |
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413 } |
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414 |
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415 /** |
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416 * Adds a {@link SourceListener} to receive events. |
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417 */ |
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418 public static void addSourceListener(SourceListener listener) { |
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419 assert listener != null; |
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420 sourceListeners.add(listener); |
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421 } |
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422 |
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423 /** |
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424 * Removes a {@link SourceListener}. Ignored if listener not found. |
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425 */ |
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426 public static void removeSourceListener(SourceListener listener) { |
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427 sourceListeners.remove(listener); |
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428 } |
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429 |
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430 private static Source notifyNewSource(Source source) { |
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431 allSources.add(new WeakReference<>(source)); |
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432 for (SourceListener listener : sourceListeners) { |
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433 listener.sourceCreated(source); |
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434 } |
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435 return source; |
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436 } |
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437 |
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438 private static String read(Reader reader) throws IOException { |
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439 final BufferedReader bufferedReader = new BufferedReader(reader); |
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440 final StringBuilder builder = new StringBuilder(); |
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441 final char[] buffer = new char[1024]; |
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442 |
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443 while (true) { |
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444 final int n = bufferedReader.read(buffer); |
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445 if (n == -1) { |
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446 break; |
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447 } |
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448 builder.append(buffer, 0, n); |
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449 } |
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450 |
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451 return builder.toString(); |
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452 } |
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453 |
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454 private final ArrayList<SourceTag> tags = new ArrayList<>(); |
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455 |
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456 private Source() { |
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457 } |
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458 |
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459 private TextMap textMap = null; |
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460 |
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461 protected abstract void reset(); |
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462 |
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463 public final boolean isTaggedAs(SourceTag tag) { |
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464 assert tag != null; |
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465 return tags.contains(tag); |
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466 } |
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467 |
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468 public final Collection<SourceTag> getSourceTags() { |
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469 return Collections.unmodifiableCollection(tags); |
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470 } |
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471 |
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472 /** |
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473 * Adds a {@linkplain SourceTag tag} to the set of tags associated with this {@link Source}; |
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474 * {@code no-op} if already in the set. |
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475 * |
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476 * @return this |
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477 */ |
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478 public final Source tagAs(SourceTag tag) { |
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479 assert tag != null; |
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480 if (!tags.contains(tag)) { |
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481 tags.add(tag); |
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482 for (SourceListener listener : sourceListeners) { |
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483 listener.sourceTaggedAs(this, tag); |
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484 } |
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485 } |
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486 return this; |
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487 } |
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488 |
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489 /** |
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490 * Returns the name of this resource holding a guest language program. An example would be the |
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491 * name of a guest language source code file. |
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492 * |
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493 * @return the name of the guest language program |
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494 */ |
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495 public abstract String getName(); |
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496 |
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497 /** |
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498 * Returns a short version of the name of the resource holding a guest language program (as |
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499 * described in @getName). For example, this could be just the name of the file, rather than a |
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500 * full path. |
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501 * |
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502 * @return the short name of the guest language program |
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503 */ |
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504 public abstract String getShortName(); |
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505 |
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506 /** |
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507 * The normalized, canonical name if the source is a file. |
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508 */ |
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509 public abstract String getPath(); |
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510 |
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511 /** |
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512 * The URL if the source is retrieved via URL. |
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513 */ |
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514 public abstract URL getURL(); |
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515 |
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516 /** |
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517 * Access to the source contents. |
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518 */ |
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519 public abstract Reader getReader(); |
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520 |
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521 /** |
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522 * Access to the source contents. |
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523 */ |
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524 public final InputStream getInputStream() { |
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525 return new ByteArrayInputStream(getCode().getBytes()); |
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526 } |
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527 |
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528 /** |
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529 * Gets the number of characters in the source. |
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530 */ |
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531 public final int getLength() { |
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532 return getTextMap().length(); |
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533 } |
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534 |
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535 /** |
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536 * Returns the complete text of the code. |
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537 */ |
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538 public abstract String getCode(); |
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539 |
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540 /** |
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541 * Returns a subsection of the code test. |
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542 */ |
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543 public String getCode(int charIndex, int charLength) { |
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544 return getCode().substring(charIndex, charIndex + charLength); |
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545 } |
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546 |
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547 /** |
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548 * Gets the text (not including a possible terminating newline) in a (1-based) numbered line. |
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549 */ |
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550 public final String getCode(int lineNumber) { |
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551 final int offset = getTextMap().lineStartOffset(lineNumber); |
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552 final int length = getTextMap().lineLength(lineNumber); |
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553 return getCode().substring(offset, offset + length); |
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554 } |
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555 |
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556 /** |
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557 * The number of text lines in the source, including empty lines; characters at the end of the |
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558 * source without a terminating newline count as a line. |
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559 */ |
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560 public final int getLineCount() { |
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561 return getTextMap().lineCount(); |
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562 } |
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563 |
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564 /** |
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565 * Given a 0-based character offset, return the 1-based number of the line that includes the |
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566 * position. |
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567 * |
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568 * @throws IllegalArgumentException if the offset is outside the text contents |
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569 */ |
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570 public final int getLineNumber(int offset) throws IllegalArgumentException { |
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571 return getTextMap().offsetToLine(offset); |
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572 } |
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573 |
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574 /** |
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575 * Given a 0-based character offset, return the 1-based number of the column at the position. |
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576 * |
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577 * @throws IllegalArgumentException if the offset is outside the text contents |
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578 */ |
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579 public final int getColumnNumber(int offset) throws IllegalArgumentException { |
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580 return getTextMap().offsetToCol(offset); |
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581 } |
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582 |
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583 /** |
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584 * Given a 1-based line number, return the 0-based offset of the first character in the line. |
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585 * |
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586 * @throws IllegalArgumentException if there is no such line in the text |
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587 */ |
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588 public final int getLineStartOffset(int lineNumber) throws IllegalArgumentException { |
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589 return getTextMap().lineStartOffset(lineNumber); |
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590 } |
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591 |
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592 /** |
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593 * The number of characters (not counting a possible terminating newline) in a (1-based) |
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594 * numbered line. |
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595 * |
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596 * @throws IllegalArgumentException if there is no such line in the text |
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597 */ |
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598 public final int getLineLength(int lineNumber) throws IllegalArgumentException { |
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599 return getTextMap().lineLength(lineNumber); |
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600 } |
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601 |
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602 /** |
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603 * Append text to a Source explicitly created as <em>Appendable</em>. |
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604 * |
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605 * @param chars the text to append |
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606 * @throws UnsupportedOperationException by concrete subclasses that do not support appending |
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607 */ |
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608 public void appendCode(CharSequence chars) { |
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609 throw new UnsupportedOperationException(); |
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610 } |
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611 |
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612 /** |
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613 * Creates a representation of a contiguous region of text in the source. |
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614 * <p> |
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615 * This method performs no checks on the validity of the arguments. |
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616 * <p> |
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617 * The resulting representation defines hash/equality around equivalent location, presuming that |
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618 * {@link Source} representations are canonical. |
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619 * |
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620 * @param identifier terse description of the region |
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621 * @param startLine 1-based line number of the first character in the section |
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622 * @param startColumn 1-based column number of the first character in the section |
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623 * @param charIndex the 0-based index of the first character of the section |
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624 * @param length the number of characters in the section |
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625 * @return newly created object representing the specified region |
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626 */ |
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627 public final SourceSection createSection(String identifier, int startLine, int startColumn, int charIndex, int length) { |
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628 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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629 } |
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630 |
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631 /** |
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632 * Creates a representation of a contiguous region of text in the source. Computes the |
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633 * {@code charIndex} value by building a {@linkplain TextMap map} of lines in the source. |
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634 * <p> |
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635 * Checks the position arguments for consistency with the source. |
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636 * <p> |
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637 * The resulting representation defines hash/equality around equivalent location, presuming that |
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638 * {@link Source} representations are canonical. |
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639 * |
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640 * @param identifier terse description of the region |
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641 * @param startLine 1-based line number of the first character in the section |
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642 * @param startColumn 1-based column number of the first character in the section |
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643 * @param length the number of characters in the section |
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644 * @return newly created object representing the specified region |
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645 * @throws IllegalArgumentException if arguments are outside the text of the source |
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646 * @throws IllegalStateException if the source is one of the "null" instances |
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647 */ |
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648 public final SourceSection createSection(String identifier, int startLine, int startColumn, int length) { |
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649 final int lineStartOffset = getTextMap().lineStartOffset(startLine); |
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650 if (startColumn > getTextMap().lineLength(startLine)) { |
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651 throw new IllegalArgumentException("column out of range"); |
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652 } |
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653 final int startOffset = lineStartOffset + startColumn - 1; |
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654 return new DefaultSourceSection(this, identifier, startLine, startColumn, startOffset, length); |
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655 } |
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656 |
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657 /** |
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658 * Creates a representation of a contiguous region of text in the source. Computes the |
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659 * {@code (startLine, startColumn)} values by building a {@linkplain TextMap map} of lines in |
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660 * the source. |
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661 * <p> |
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662 * Checks the position arguments for consistency with the source. |
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663 * <p> |
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664 * The resulting representation defines hash/equality around equivalent location, presuming that |
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665 * {@link Source} representations are canonical. |
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666 * |
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667 * |
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668 * @param identifier terse description of the region |
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669 * @param charIndex 0-based position of the first character in the section |
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670 * @param length the number of characters in the section |
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671 * @return newly created object representing the specified region |
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672 * @throws IllegalArgumentException if either of the arguments are outside the text of the |
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673 * source |
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674 * @throws IllegalStateException if the source is one of the "null" instances |
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675 */ |
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676 public final SourceSection createSection(String identifier, int charIndex, int length) throws IllegalArgumentException { |
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677 checkRange(charIndex, length); |
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678 final int startLine = getLineNumber(charIndex); |
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679 final int startColumn = charIndex - getLineStartOffset(startLine) + 1; |
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680 return new DefaultSourceSection(this, identifier, startLine, startColumn, charIndex, length); |
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681 } |
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682 |
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683 protected void checkRange(int charIndex, int length) { |
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684 if (!(charIndex >= 0 && length >= 0 && charIndex + length <= getCode().length())) { |
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685 throw new IllegalArgumentException("text positions out of range"); |
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686 } |
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687 } |
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688 |
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689 /** |
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690 * Creates a representation of a line of text in the source identified only by line number, from |
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691 * which the character information will be computed. |
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692 * |
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693 * @param identifier terse description of the line |
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694 * @param lineNumber 1-based line number of the first character in the section |
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695 * @return newly created object representing the specified line |
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696 * @throws IllegalArgumentException if the line does not exist the source |
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697 * @throws IllegalStateException if the source is one of the "null" instances |
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698 */ |
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699 public final SourceSection createSection(String identifier, int lineNumber) { |
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700 final int charIndex = getTextMap().lineStartOffset(lineNumber); |
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701 final int length = getTextMap().lineLength(lineNumber); |
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702 return createSection(identifier, charIndex, length); |
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703 } |
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704 |
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705 /** |
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706 * Creates a representation of a line number in this source, suitable for use as a hash table |
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707 * key with equality defined to mean equivalent location. |
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708 * |
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709 * @param lineNumber a 1-based line number in this source |
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710 * @return a representation of a line in this source |
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711 */ |
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712 public final LineLocation createLineLocation(int lineNumber) { |
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713 return new LineLocationImpl(this, lineNumber); |
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714 } |
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715 |
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716 /** |
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717 * An object suitable for using as a key into a hashtable that defines equivalence between |
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718 * different source types. |
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719 */ |
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720 protected Object getHashKey() { |
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721 return getName(); |
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722 } |
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723 |
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724 protected final TextMap getTextMap() { |
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725 if (textMap == null) { |
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726 textMap = createTextMap(); |
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727 } |
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728 return textMap; |
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729 } |
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730 |
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731 protected final void clearTextMap() { |
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732 textMap = null; |
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733 } |
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734 |
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735 protected TextMap createTextMap() { |
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736 final String code = getCode(); |
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737 if (code == null) { |
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|
738 throw new RuntimeException("can't read file " + getName()); |
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|
739 } |
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|
740 return TextMap.fromString(code); |
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|
741 } |
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|
742 |
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|
743 private static final class LiteralSource extends Source { |
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744 |
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745 private final String description; |
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|
746 private final String code; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
747 |
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|
748 public LiteralSource(String description, String code) { |
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749 this.description = description; |
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|
750 this.code = code; |
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|
751 } |
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diff
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|
752 |
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diff
changeset
|
753 @Override |
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|
754 public String getName() { |
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755 return description; |
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|
756 } |
74e142bd2b12
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|
757 |
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|
758 @Override |
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|
759 public String getShortName() { |
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|
760 return description; |
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|
761 } |
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diff
changeset
|
762 |
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|
763 @Override |
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|
764 public String getCode() { |
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|
765 return code; |
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|
766 } |
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|
767 |
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diff
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|
768 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
769 public String getPath() { |
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|
770 return description; |
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changeset
|
771 } |
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diff
changeset
|
772 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
773 @Override |
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|
774 public URL getURL() { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
775 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
776 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
777 |
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|
778 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
779 public Reader getReader() { |
74e142bd2b12
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parents:
diff
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|
780 return new StringReader(code); |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
781 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
782 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
783 @Override |
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changeset
|
784 protected void reset() { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
785 } |
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parents:
diff
changeset
|
786 |
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diff
changeset
|
787 @Override |
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parents:
diff
changeset
|
788 public int hashCode() { |
21271
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
789 return description.hashCode(); |
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diff
changeset
|
790 } |
74e142bd2b12
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parents:
diff
changeset
|
791 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
792 @Override |
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parents:
diff
changeset
|
793 public boolean equals(Object obj) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
794 if (this == obj) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
795 return true; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
796 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
797 if (obj == null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
798 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
799 } |
21271
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|
800 if (obj instanceof LiteralSource) { |
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|
801 LiteralSource other = (LiteralSource) obj; |
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21270
diff
changeset
|
802 return description.equals(other.description); |
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diff
changeset
|
803 } |
21271
1516d26e8f2b
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|
804 return false; |
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changeset
|
805 } |
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diff
changeset
|
806 } |
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Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
807 |
21291
70bbc530a2d3
Truffle/Source:
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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21271
diff
changeset
|
808 private static final class AppendableLiteralSource extends Source { |
21271
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|
809 private String description; |
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changeset
|
810 final List<CharSequence> codeList = new ArrayList<>(); |
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changeset
|
811 |
1516d26e8f2b
Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
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|
812 public AppendableLiteralSource(String description) { |
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changeset
|
813 this.description = description; |
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Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
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|
814 } |
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Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
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diff
changeset
|
815 |
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|
816 @Override |
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|
817 public String getName() { |
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|
818 return description; |
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|
819 } |
1516d26e8f2b
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|
820 |
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|
821 @Override |
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|
822 public String getShortName() { |
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|
823 return description; |
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|
824 } |
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|
825 |
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|
826 @Override |
1516d26e8f2b
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|
827 public String getCode() { |
1516d26e8f2b
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|
828 return getCodeFromIndex(0); |
1516d26e8f2b
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|
829 } |
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Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
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changeset
|
830 |
1516d26e8f2b
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|
831 @Override |
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changeset
|
832 public String getPath() { |
1516d26e8f2b
Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
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|
833 return description; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
834 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
835 |
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|
836 @Override |
1516d26e8f2b
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|
837 public URL getURL() { |
1516d26e8f2b
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changeset
|
838 return null; |
1516d26e8f2b
Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
839 } |
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840 |
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841 @Override |
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842 public Reader getReader() { |
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843 return new StringReader(getCode()); |
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844 } |
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845 |
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846 @Override |
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847 protected void reset() { |
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848 } |
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849 |
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850 private String getCodeFromIndex(int index) { |
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851 StringBuilder sb = new StringBuilder(); |
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852 for (int i = index; i < codeList.size(); i++) { |
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853 CharSequence s = codeList.get(i); |
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854 sb.append(s); |
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855 } |
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856 return sb.toString(); |
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857 } |
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858 |
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859 @Override |
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860 public void appendCode(CharSequence chars) { |
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861 codeList.add(chars); |
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862 clearTextMap(); |
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863 } |
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864 |
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|
865 } |
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|
866 |
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|
867 private static final class FileSource extends Source { |
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|
868 |
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869 private final File file; |
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870 private final String name; // Name used originally to describe the source |
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871 private final String path; // Normalized path description of an actual file |
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|
872 |
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873 private String code = null; // A cache of the file's contents |
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|
874 private long timeStamp; // timestamp of the cache in the file system |
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875 |
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|
876 public FileSource(File file, String name, String path) { |
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|
877 this(file, name, path, null); |
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|
878 } |
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|
879 |
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|
880 public FileSource(File file, String name, String path, CharSequence chars) { |
18980
ae0eb836e6f4
store absolute file in FileSource
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18979
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|
881 this.file = file.getAbsoluteFile(); |
16068
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882 this.name = name; |
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883 this.path = path; |
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|
884 if (chars != null) { |
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|
885 this.code = chars.toString(); |
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|
886 } |
16068
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|
887 } |
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|
888 |
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|
889 @Override |
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|
890 public String getName() { |
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|
891 return name; |
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|
892 } |
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diff
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|
893 |
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|
894 @Override |
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|
895 public String getShortName() { |
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|
896 return file.getName(); |
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|
897 } |
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|
898 |
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diff
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|
899 @Override |
21271
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|
900 protected Object getHashKey() { |
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901 return path; |
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|
902 } |
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|
903 |
1516d26e8f2b
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|
904 @Override |
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|
905 public String getCode() { |
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parents:
diff
changeset
|
906 if (fileCacheEnabled) { |
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parents:
diff
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|
907 if (code == null || timeStamp != file.lastModified()) { |
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parents:
diff
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|
908 try { |
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parents:
diff
changeset
|
909 code = read(getReader()); |
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parents:
diff
changeset
|
910 timeStamp = file.lastModified(); |
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parents:
diff
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|
911 } catch (IOException e) { |
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parents:
diff
changeset
|
912 } |
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parents:
diff
changeset
|
913 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
914 return code; |
74e142bd2b12
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parents:
diff
changeset
|
915 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
916 try { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
917 return read(new FileReader(file)); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
918 } catch (IOException e) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
919 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
920 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
921 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
922 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
923 @Override |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
924 public String getPath() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
925 return path; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
926 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
927 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
928 @Override |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
929 public URL getURL() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
930 return null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
931 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
932 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
933 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
934 public Reader getReader() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
935 if (code != null && timeStamp == file.lastModified()) { |
74e142bd2b12
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parents:
diff
changeset
|
936 return new StringReader(code); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
937 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
938 try { |
74e142bd2b12
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parents:
diff
changeset
|
939 return new FileReader(file); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
940 } catch (FileNotFoundException e) { |
18979
bdb24e259c11
include original exception in FileSource.getReader
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18676
diff
changeset
|
941 |
bdb24e259c11
include original exception in FileSource.getReader
Lukas Stadler <lukas.stadler@oracle.com>
parents:
18676
diff
changeset
|
942 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
|
943 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
944 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
945 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
946 @Override |
18676
1c12cf39281d
Truffle/Source: redefine equality of FileSource objects strictly in terms of the canonicalized file path, for use as hash key.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
18672
diff
changeset
|
947 public int hashCode() { |
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948 return path.hashCode(); |
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949 } |
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950 |
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951 @Override |
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952 public boolean equals(Object obj) { |
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953 if (this == obj) { |
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954 return true; |
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955 } |
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956 if (obj instanceof FileSource) { |
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957 FileSource other = (FileSource) obj; |
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958 return path.equals(other.path); |
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959 } |
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960 return false; |
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961 } |
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962 |
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963 @Override |
16068
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964 protected void reset() { |
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965 this.code = null; |
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966 } |
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967 } |
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968 |
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969 private static final class URLSource extends Source { |
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970 |
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971 private static final Map<URL, WeakReference<URLSource>> urlToSource = new HashMap<>(); |
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972 |
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973 public static URLSource get(URL url, String name) throws IOException { |
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974 WeakReference<URLSource> sourceRef = urlToSource.get(url); |
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975 URLSource source = sourceRef == null ? null : sourceRef.get(); |
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976 if (source == null) { |
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977 source = new URLSource(url, name); |
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978 urlToSource.put(url, new WeakReference<>(source)); |
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979 } |
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980 return source; |
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981 } |
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982 |
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983 private final URL url; |
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984 private final String name; |
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985 private String code = null; // A cache of the source contents |
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986 |
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987 public URLSource(URL url, String name) throws IOException { |
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988 this.url = url; |
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989 this.name = name; |
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990 code = read(new InputStreamReader(url.openStream())); |
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991 } |
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992 |
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|
993 @Override |
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994 public String getName() { |
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|
995 return name; |
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996 } |
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997 |
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998 @Override |
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999 public String getShortName() { |
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1000 return name; |
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1001 } |
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|
1002 |
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1003 @Override |
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1004 public String getPath() { |
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1005 return url.getPath(); |
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|
1006 } |
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|
1007 |
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|
1008 @Override |
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1009 public URL getURL() { |
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1010 return url; |
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1011 } |
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|
1012 |
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1013 @Override |
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1014 public Reader getReader() { |
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1015 return new StringReader(code); |
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|
1016 } |
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|
1017 |
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|
1018 @Override |
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1019 public String getCode() { |
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|
1020 return code; |
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|
1021 } |
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|
1022 |
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|
1023 @Override |
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|
1024 protected void reset() { |
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|
1025 } |
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|
1026 } |
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1027 |
21292
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1028 private static final class SubSource extends Source { |
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1029 private final Source base; |
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1030 private final int baseIndex; |
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1031 private final int subLength; |
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1032 |
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1033 private static SubSource create(Source base, int baseIndex, int length) { |
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1034 if (baseIndex < 0 || length < 0 || baseIndex + length > base.getLength()) { |
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1035 throw new IllegalArgumentException("text positions out of range"); |
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1036 } |
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1037 return new SubSource(base, baseIndex, length); |
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1038 } |
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1039 |
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|
1040 private SubSource(Source base, int baseIndex, int length) { |
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1041 this.base = base; |
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1042 this.baseIndex = baseIndex; |
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1043 this.subLength = length; |
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1044 } |
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1045 |
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1046 @Override |
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|
1047 protected void reset() { |
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|
1048 assert false; |
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1049 } |
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1050 |
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|
1051 @Override |
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|
1052 public String getName() { |
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|
1053 return base.getName(); |
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1054 } |
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|
1055 |
8eadc82f4a93
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1056 @Override |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
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parents:
21291
diff
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|
1057 public String getShortName() { |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1058 return base.getShortName(); |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
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|
1059 } |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1060 |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1061 @Override |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
changeset
|
1062 public String getPath() { |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
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|
1063 return base.getPath(); |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
21291
diff
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|
1064 } |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1065 |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1066 @Override |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1067 public URL getURL() { |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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diff
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|
1068 return null; |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
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|
1069 } |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1070 |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1071 @Override |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1072 public Reader getReader() { |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
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diff
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|
1073 assert false; |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
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|
1074 return null; |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
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|
1075 } |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1076 |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1077 @Override |
8eadc82f4a93
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1078 public String getCode() { |
8eadc82f4a93
Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
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|
1079 return base.getCode(baseIndex, subLength); |
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|
1080 } |
8eadc82f4a93
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1081 } |
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Truffle/Source: fix an inconsistency in the ordering of the private subclass sources; clean up the getTextMap() abstraction for more safety.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1082 |
17066
0bcefb0f8488
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|
1083 private static final class BytesSource extends Source { |
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Truffle: byte[] sources.
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|
1084 |
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|
1085 private final String name; |
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Truffle: byte[] sources.
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|
1086 private final byte[] bytes; |
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Truffle: byte[] sources.
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|
1087 private final int byteIndex; |
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Truffle: byte[] sources.
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|
1088 private final int length; |
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|
1089 private final BytesDecoder decoder; |
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|
1090 |
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|
1091 public BytesSource(String name, byte[] bytes, int byteIndex, int length, BytesDecoder decoder) { |
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|
1092 this.name = name; |
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Chris Seaton <chris.seaton@oracle.com>
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|
1093 this.bytes = bytes; |
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Truffle: byte[] sources.
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changeset
|
1094 this.byteIndex = byteIndex; |
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|
1095 this.length = length; |
0bcefb0f8488
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parents:
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|
1096 this.decoder = decoder; |
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Truffle: byte[] sources.
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|
1097 } |
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|
1098 |
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|
1099 @Override |
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|
1100 protected void reset() { |
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|
1101 } |
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Truffle: byte[] sources.
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|
1102 |
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|
1103 @Override |
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|
1104 public String getName() { |
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Truffle: byte[] sources.
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|
1105 return name; |
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Truffle: byte[] sources.
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|
1106 } |
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Truffle: byte[] sources.
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|
1107 |
0bcefb0f8488
Truffle: byte[] sources.
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|
1108 @Override |
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|
1109 public String getShortName() { |
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Truffle: byte[] sources.
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|
1110 return name; |
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Truffle: byte[] sources.
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|
1111 } |
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Truffle: byte[] sources.
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|
1112 |
0bcefb0f8488
Truffle: byte[] sources.
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|
1113 @Override |
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|
1114 public String getPath() { |
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Truffle: byte[] sources.
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|
1115 return name; |
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Truffle: byte[] sources.
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|
1116 } |
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Truffle: byte[] sources.
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|
1117 |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1118 @Override |
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changeset
|
1119 public URL getURL() { |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1120 return null; |
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Truffle: byte[] sources.
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|
1121 } |
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Truffle: byte[] sources.
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changeset
|
1122 |
0bcefb0f8488
Truffle: byte[] sources.
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diff
changeset
|
1123 @Override |
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Truffle: byte[] sources.
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16989
diff
changeset
|
1124 public Reader getReader() { |
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Truffle: byte[] sources.
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|
1125 return null; |
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Truffle: byte[] sources.
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|
1126 } |
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Truffle: byte[] sources.
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changeset
|
1127 |
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Truffle: byte[] sources.
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changeset
|
1128 @Override |
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|
1129 public String getCode() { |
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Truffle: byte[] sources.
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parents:
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|
1130 return decoder.decode(bytes, byteIndex, length); |
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Truffle: byte[] sources.
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|
1131 } |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1132 |
0bcefb0f8488
Truffle: byte[] sources.
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diff
changeset
|
1133 @Override |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1134 public String getCode(int byteOffset, int codeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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16989
diff
changeset
|
1135 return decoder.decode(bytes, byteIndex + byteOffset, codeLength); |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1136 } |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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changeset
|
1137 |
0bcefb0f8488
Truffle: byte[] sources.
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16989
diff
changeset
|
1138 @Override |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
16989
diff
changeset
|
1139 protected void checkRange(int charIndex, int rangeLength) { |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
16989
diff
changeset
|
1140 if (!(charIndex >= 0 && rangeLength >= 0 && charIndex + rangeLength <= length)) { |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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changeset
|
1141 throw new IllegalArgumentException("text positions out of range"); |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1142 } |
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Truffle: byte[] sources.
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parents:
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changeset
|
1143 } |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1144 |
0bcefb0f8488
Truffle: byte[] sources.
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diff
changeset
|
1145 @Override |
0bcefb0f8488
Truffle: byte[] sources.
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diff
changeset
|
1146 protected TextMap createTextMap() { |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
16989
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changeset
|
1147 return TextMap.fromBytes(bytes, byteIndex, length, decoder); |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1148 } |
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Truffle: byte[] sources.
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|
1149 } |
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Truffle: byte[] sources.
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changeset
|
1150 |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1151 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
|
1152 |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1153 private final Source source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1154 private final String identifier; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1155 private final int startLine; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1156 private final int startColumn; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1157 private final int charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1158 private final int charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1159 |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1160 /** |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1161 * Creates a new object representing a contiguous text section within the source code of a |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1162 * guest language program's text. |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1163 * <p> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1164 * The starting location of the section is specified using two different coordinate: |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1165 * <ul> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1166 * <li><b>(row, column)</b>: rows and columns are 1-based, so the first character in a |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1167 * source file is at position {@code (1,1)}.</li> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1168 * <li><b>character index</b>: 0-based offset of the character from the beginning of the |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1169 * source, so the first character in a file is at index {@code 0}.</li> |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1170 * </ul> |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1171 * The <b>newline</b> that terminates each line counts as a single character for the purpose |
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|
1172 * of a character index. The (row,column) coordinates of a newline character should never |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1173 * appear in a text section. |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1174 * <p> |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1175 * |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1176 * @param source object representing the complete source program that contains this section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1177 * @param identifier an identifier used when printing the section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1178 * @param startLine the 1-based number of the start line of the section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1179 * @param startColumn the 1-based number of the start column of the section |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1180 * @param charIndex the 0-based index of the first character of the section |
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parents:
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|
1181 * @param charLength the length of the section in number of characters |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1182 */ |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1183 public DefaultSourceSection(Source source, String identifier, int startLine, int startColumn, int charIndex, int charLength) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1184 this.source = source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1185 this.identifier = identifier; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1186 this.startLine = startLine; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1187 this.startColumn = startColumn; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1188 this.charIndex = charIndex; |
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parents:
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|
1189 this.charLength = charLength; |
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parents:
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|
1190 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1191 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1192 @Override |
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
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|
1193 public Source getSource() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1194 return source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1195 } |
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|
1196 |
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parents:
diff
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|
1197 @Override |
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
diff
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|
1198 public int getStartLine() { |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1199 return startLine; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
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|
1200 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1201 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1202 @Override |
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re-enabled Checkstyle with the release of 6.0 that supports Java 8; fixed existing Checkstyle warnings
Doug Simon <doug.simon@oracle.com>
parents:
17066
diff
changeset
|
1203 public LineLocation getLineLocation() { |
16068
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1204 return source.createLineLocation(startLine); |
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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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|
1205 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1206 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1207 @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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|
1208 public int getStartColumn() { |
16068
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1209 return startColumn; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1210 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1211 |
19688
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1212 public int getEndLine() { |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1213 return source.getLineNumber(charIndex + charLength - 1); |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
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|
1214 } |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1215 |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1216 public int getEndColumn() { |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1217 return source.getColumnNumber(charIndex + charLength - 1); |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1218 } |
33bdafbf285d
Truffle: SourceSection can now produce the line/column coordinates of its final character
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
19687
diff
changeset
|
1219 |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1220 @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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|
1221 public int getCharIndex() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1222 return charIndex; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1223 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1224 |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1225 @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
|
1226 public int getCharLength() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1227 return charLength; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1228 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1229 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1230 @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
|
1231 public int getCharEndIndex() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1232 return charIndex + charLength; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1233 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1234 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1235 @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
|
1236 public String getIdentifier() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1237 return identifier; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1238 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1239 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1240 @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
|
1241 public String getCode() { |
17066
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1242 return getSource().getCode(charIndex, charLength); |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1243 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1244 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1245 @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
changeset
|
1246 public String getShortDescription() { |
16068
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1247 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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|
1248 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1249 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1250 @Override |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1251 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
|
1252 return getCode(); |
16068
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parents:
diff
changeset
|
1253 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1254 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1255 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1256 public int hashCode() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1257 final int prime = 31; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1258 int result = 1; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1259 result = prime * result + charIndex; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1260 result = prime * result + charLength; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1261 result = prime * result + ((identifier == null) ? 0 : identifier.hashCode()); |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1262 result = prime * result + ((source == null) ? 0 : source.hashCode()); |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1263 result = prime * result + startColumn; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1264 result = prime * result + startLine; |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1265 return result; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1266 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1267 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1268 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1269 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
changeset
|
1270 if (this == obj) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1271 return true; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1272 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1273 if (obj == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1274 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1275 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1276 if (!(obj instanceof DefaultSourceSection)) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1277 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1278 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1279 DefaultSourceSection other = (DefaultSourceSection) obj; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1280 if (charIndex != other.charIndex) { |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1281 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1282 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1283 if (charLength != other.charLength) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1284 return false; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1285 } |
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1286 if (identifier == null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1287 if (other.identifier != null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1288 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1289 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1290 } else if (!identifier.equals(other.identifier)) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1291 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1292 } |
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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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|
1293 if (source == null) { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1294 if (other.source != null) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1295 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1296 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1297 } else if (!source.equals(other.source)) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1298 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1299 } |
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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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|
1300 if (startColumn != other.startColumn) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
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|
1301 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1302 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1303 if (startLine != other.startLine) { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1304 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1305 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1306 return true; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1307 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1308 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1309 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1310 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
|
1311 private final Source source; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1312 private final int line; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1313 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1314 public LineLocationImpl(Source source, int line) { |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1315 assert source != null; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1316 this.source = source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1317 this.line = line; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1318 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1319 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1320 @Override |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1321 public Source getSource() { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1322 return source; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1323 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1324 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1325 @Override |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1326 public int getLineNumber() { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1327 return line; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1328 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1329 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1330 @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
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|
1331 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
|
1332 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
|
1333 } |
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
|
1334 |
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
|
1335 @Override |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1336 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
|
1337 return "Line[" + getShortDescription() + "]"; |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1338 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1339 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1340 @Override |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1341 public int hashCode() { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1342 final int prime = 31; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1343 int result = 1; |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1344 result = prime * result + line; |
21271
1516d26e8f2b
Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
21270
diff
changeset
|
1345 result = prime * result + source.getHashKey().hashCode(); |
16068
74e142bd2b12
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1346 return result; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1347 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1348 |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1349 @Override |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1350 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
changeset
|
1351 if (this == obj) { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1352 return true; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1353 } |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1354 if (obj == null) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1355 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1356 } |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1357 if (!(obj instanceof LineLocationImpl)) { |
74e142bd2b12
Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1358 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1359 } |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1360 LineLocationImpl other = (LineLocationImpl) obj; |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1361 if (line != other.line) { |
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Truffle/Source: major API revision
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1362 return false; |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1363 } |
21271
1516d26e8f2b
Truffle/Source: add a new kind of Source (both indexed and non-indexed flavors) whose contents are unavailable at creation, but will be provided incrementally.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
21270
diff
changeset
|
1364 return source.getHashKey().equals(other.source.getHashKey()); |
16068
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1365 } |
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
diff
changeset
|
1366 |
16130
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parents:
16068
diff
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|
1367 } |
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16068
diff
changeset
|
1368 |
6f7d3f3703d3
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parents:
16068
diff
changeset
|
1369 /** |
6f7d3f3703d3
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parents:
16068
diff
changeset
|
1370 * A utility for converting between coordinate systems in a string of text interspersed with |
6f7d3f3703d3
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parents:
16068
diff
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|
1371 * newline characters. The coordinate systems are: |
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parents:
16068
diff
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|
1372 * <ul> |
6f7d3f3703d3
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parents:
16068
diff
changeset
|
1373 * <li>0-based character offset from the beginning of the text, where newline characters count |
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parents:
16068
diff
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|
1374 * as a single character and the first character in the text occupies position 0.</li> |
6f7d3f3703d3
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parents:
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diff
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|
1375 * <li>1-based position in the 2D space of lines and columns, in which the first position in the |
6f7d3f3703d3
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parents:
16068
diff
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|
1376 * text is at (1,1).</li> |
6f7d3f3703d3
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parents:
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diff
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|
1377 * </ul> |
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parents:
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diff
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|
1378 * <p> |
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parents:
16068
diff
changeset
|
1379 * This utility is based on positions occupied by characters, not text stream positions as in a |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
parents:
16068
diff
changeset
|
1380 * text editor. The distinction shows up in editors where you can put the cursor just past the |
6f7d3f3703d3
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parents:
16068
diff
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|
1381 * last character in a buffer; this is necessary, among other reasons, so that you can put the |
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parents:
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diff
changeset
|
1382 * edit cursor in a new (empty) buffer. For the purposes of this utility, however, there are no |
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|
1383 * character positions in an empty text string and there are no lines in an empty text string. |
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|
1384 * <p> |
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diff
changeset
|
1385 * A newline character designates the end of a line and occupies a column position. |
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|
1386 * <p> |
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parents:
16068
diff
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|
1387 * If the text ends with a character other than a newline, then the characters following the |
6f7d3f3703d3
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parents:
16068
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changeset
|
1388 * final newline character count as a line, even though not newline-terminated. |
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|
1389 * <p> |
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diff
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|
1390 * <strong>Limitations:</strong> |
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|
1391 * <ul> |
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diff
changeset
|
1392 * <li>Does not handle multiple character encodings correctly.</li> |
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16068
diff
changeset
|
1393 * <li>Treats tabs as occupying 1 column.</li> |
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parents:
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diff
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|
1394 * <li>Does not handle multiple-character line termination sequences correctly.</li> |
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|
1395 * </ul> |
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|
1396 */ |
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diff
changeset
|
1397 private static final class TextMap { |
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diff
changeset
|
1398 |
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parents:
16068
diff
changeset
|
1399 // 0-based offsets of newline characters in the text, with sentinel |
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parents:
16068
diff
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|
1400 private final int[] nlOffsets; |
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diff
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|
1401 |
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16068
diff
changeset
|
1402 // The number of characters in the text, including newlines (which count as 1). |
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|
1403 private final int textLength; |
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|
1404 |
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|
1405 // Is the final text character a newline? |
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|
1406 final boolean finalNL; |
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|
1407 |
17066
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Chris Seaton <chris.seaton@oracle.com>
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|
1408 public TextMap(int[] nlOffsets, int textLength, boolean finalNL) { |
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Truffle: byte[] sources.
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|
1409 this.nlOffsets = nlOffsets; |
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Truffle: byte[] sources.
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|
1410 this.textLength = textLength; |
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diff
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|
1411 this.finalNL = finalNL; |
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Truffle: byte[] sources.
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|
1412 } |
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Truffle: byte[] sources.
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|
1413 |
16130
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|
1414 /** |
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|
1415 * Constructs map permitting translation between 0-based character offsets and 1-based |
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diff
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|
1416 * lines/columns. |
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|
1417 */ |
17066
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Chris Seaton <chris.seaton@oracle.com>
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|
1418 public static TextMap fromString(String text) { |
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Truffle: byte[] sources.
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|
1419 final int textLength = text.length(); |
16130
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|
1420 final ArrayList<Integer> lines = new ArrayList<>(); |
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|
1421 lines.add(0); |
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|
1422 int offset = 0; |
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|
1423 |
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|
1424 while (offset < text.length()) { |
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|
1425 final int nlIndex = text.indexOf('\n', offset); |
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|
1426 if (nlIndex >= 0) { |
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|
1427 offset = nlIndex + 1; |
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diff
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|
1428 lines.add(offset); |
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diff
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|
1429 } else { |
6f7d3f3703d3
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Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1430 break; |
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|
1431 } |
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|
1432 } |
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|
1433 lines.add(Integer.MAX_VALUE); |
6f7d3f3703d3
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|
1434 |
17066
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Chris Seaton <chris.seaton@oracle.com>
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|
1435 final int[] nlOffsets = new int[lines.size()]; |
16130
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|
1436 for (int line = 0; line < lines.size(); line++) { |
6f7d3f3703d3
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|
1437 nlOffsets[line] = lines.get(line); |
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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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|
1438 } |
16130
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|
1439 |
17066
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Chris Seaton <chris.seaton@oracle.com>
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|
1440 final boolean finalNL = textLength > 0 && (textLength == nlOffsets[nlOffsets.length - 2]); |
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Truffle: byte[] sources.
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|
1441 |
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Truffle: byte[] sources.
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diff
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|
1442 return new TextMap(nlOffsets, textLength, finalNL); |
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Truffle: byte[] sources.
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|
1443 } |
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Truffle: byte[] sources.
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|
1444 |
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Truffle: byte[] sources.
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|
1445 public static TextMap fromBytes(byte[] bytes, int byteIndex, int length, BytesDecoder bytesDecoder) { |
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|
1446 final ArrayList<Integer> lines = new ArrayList<>(); |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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|
1447 lines.add(0); |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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|
1448 |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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changeset
|
1449 bytesDecoder.decodeLines(bytes, byteIndex, length, new BytesDecoder.LineMarker() { |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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|
1450 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1451 public void markLine(int index) { |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1452 lines.add(index); |
0bcefb0f8488
Truffle: byte[] sources.
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parents:
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|
1453 } |
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Truffle: byte[] sources.
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parents:
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|
1454 }); |
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Truffle: byte[] sources.
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parents:
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changeset
|
1455 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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diff
changeset
|
1456 lines.add(Integer.MAX_VALUE); |
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Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
16989
diff
changeset
|
1457 |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
parents:
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diff
changeset
|
1458 final int[] nlOffsets = new int[lines.size()]; |
0bcefb0f8488
Truffle: byte[] sources.
Chris Seaton <chris.seaton@oracle.com>
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diff
changeset
|
1459 for (int line = 0; line < lines.size(); line++) { |
0bcefb0f8488
Truffle: byte[] sources.
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|
1460 nlOffsets[line] = lines.get(line); |
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Truffle: byte[] sources.
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parents:
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diff
changeset
|
1461 } |
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Truffle: byte[] sources.
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parents:
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changeset
|
1462 |
0bcefb0f8488
Truffle: byte[] sources.
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changeset
|
1463 final boolean finalNL = length > 0 && (length == nlOffsets[nlOffsets.length - 2]); |
0bcefb0f8488
Truffle: byte[] sources.
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|
1464 |
0bcefb0f8488
Truffle: byte[] sources.
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|
1465 return new TextMap(nlOffsets, length, finalNL); |
16130
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|
1466 } |
6f7d3f3703d3
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|
1467 |
6f7d3f3703d3
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|
1468 /** |
6f7d3f3703d3
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|
1469 * Converts 0-based character offset to 1-based number of the line containing the character. |
6f7d3f3703d3
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|
1470 * |
6f7d3f3703d3
Truffle/Source:
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|
1471 * @throws IllegalArgumentException if the offset is outside the string. |
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|
1472 */ |
6f7d3f3703d3
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diff
changeset
|
1473 public int offsetToLine(int offset) throws IllegalArgumentException { |
6f7d3f3703d3
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changeset
|
1474 if (offset < 0 || offset >= textLength) { |
6f7d3f3703d3
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changeset
|
1475 throw new IllegalArgumentException("offset out of bounds"); |
6f7d3f3703d3
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diff
changeset
|
1476 } |
6f7d3f3703d3
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changeset
|
1477 int line = 1; |
6f7d3f3703d3
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diff
changeset
|
1478 while (offset >= nlOffsets[line]) { |
6f7d3f3703d3
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diff
changeset
|
1479 line++; |
6f7d3f3703d3
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changeset
|
1480 } |
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|
1481 return line; |
6f7d3f3703d3
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changeset
|
1482 } |
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changeset
|
1483 |
6f7d3f3703d3
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|
1484 /** |
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|
1485 * Converts 0-based character offset to 1-based number of the column occupied by the |
6f7d3f3703d3
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changeset
|
1486 * character. |
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diff
changeset
|
1487 * <p> |
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changeset
|
1488 * Tabs are not expanded; they occupy 1 column. |
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changeset
|
1489 * |
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changeset
|
1490 * @throws IllegalArgumentException if the offset is outside the string. |
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changeset
|
1491 */ |
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diff
changeset
|
1492 public int offsetToCol(int offset) throws IllegalArgumentException { |
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changeset
|
1493 return 1 + offset - nlOffsets[offsetToLine(offset) - 1]; |
6f7d3f3703d3
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changeset
|
1494 } |
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changeset
|
1495 |
6f7d3f3703d3
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changeset
|
1496 /** |
19690
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1497 * The number of characters in the mapped text. |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1498 */ |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1499 public int length() { |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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diff
changeset
|
1500 return textLength; |
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Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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diff
changeset
|
1501 } |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
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diff
changeset
|
1502 |
c152a485d747
Truffle: new method Source.getLength() and semantic adjustments to the new factory method for creating files whose contents have already been read.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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|
1503 /** |
16130
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|
1504 * The number of lines in the text; if characters appear after the final newline, then they |
6f7d3f3703d3
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|
1505 * also count as a line, even though not newline-terminated. |
6f7d3f3703d3
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|
1506 */ |
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changeset
|
1507 public int lineCount() { |
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changeset
|
1508 if (textLength == 0) { |
6f7d3f3703d3
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diff
changeset
|
1509 return 0; |
6f7d3f3703d3
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diff
changeset
|
1510 } |
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diff
changeset
|
1511 return finalNL ? nlOffsets.length - 2 : nlOffsets.length - 1; |
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changeset
|
1512 } |
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|
1513 |
6f7d3f3703d3
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changeset
|
1514 /** |
6f7d3f3703d3
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changeset
|
1515 * Converts 1-based line number to the 0-based offset of the line's first character; this |
6f7d3f3703d3
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|
1516 * would be the offset of a newline if the line is empty. |
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1517 * |
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1518 * @throws IllegalArgumentException if there is no such line in the text. |
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1519 */ |
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1520 public int lineStartOffset(int line) throws IllegalArgumentException { |
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1521 if (textLength == 0 || lineOutOfRange(line)) { |
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1522 throw new IllegalArgumentException("line out of bounds"); |
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1523 } |
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1524 return nlOffsets[line - 1]; |
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1525 } |
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1526 |
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1527 /** |
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1528 * Gets the number of characters in a line, identified by 1-based line number; |
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1529 * <em>does not</em> include the final newline, if any. |
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1530 * |
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1531 * @throws IllegalArgumentException if there is no such line in the text. |
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1532 */ |
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1533 public int lineLength(int line) throws IllegalArgumentException { |
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1534 if (textLength == 0 || lineOutOfRange(line)) { |
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1535 throw new IllegalArgumentException("line out of bounds"); |
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1536 } |
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1537 if (line == nlOffsets.length - 1 && !finalNL) { |
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1538 return textLength - nlOffsets[line - 1]; |
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1539 } |
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1540 return (nlOffsets[line] - nlOffsets[line - 1]) - 1; |
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1541 |
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1542 } |
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1543 |
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1544 /** |
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1545 * Is the line number out of range. |
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1546 */ |
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1547 private boolean lineOutOfRange(int line) { |
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1548 return line <= 0 || line >= nlOffsets.length || (line == nlOffsets.length - 1 && finalNL); |
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1549 } |
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1550 |
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1551 } |
16130
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1552 |
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1553 } |