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1 /* |
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2 * Copyright 2001 Sun Microsystems, Inc. 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. Sun designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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22 * CA 95054 USA or visit www.sun.com if you need additional information or |
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23 * have any questions. |
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24 */ |
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25 |
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26 package com.sun.tools.jdi; |
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27 |
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28 import com.sun.jdi.*; |
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29 |
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30 import java.util.*; |
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31 import java.io.File; |
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32 |
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33 class SDE { |
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34 private static final int INIT_SIZE_FILE = 3; |
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35 private static final int INIT_SIZE_LINE = 100; |
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36 private static final int INIT_SIZE_STRATUM = 3; |
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37 |
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38 static final String BASE_STRATUM_NAME = "Java"; |
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39 |
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40 /* for C capatibility */ |
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41 static final String NullString = null; |
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42 |
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43 private class FileTableRecord { |
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44 int fileId; |
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45 String sourceName; |
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46 String sourcePath; // do not read - use accessor |
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47 boolean isConverted = false; |
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48 |
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49 /** |
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50 * Return the sourcePath, computing it if not set. |
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51 * If set, convert '/' in the sourcePath to the |
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52 * local file separator. |
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53 */ |
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54 String getSourcePath(ReferenceTypeImpl refType) { |
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55 if (!isConverted) { |
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56 if (sourcePath == null) { |
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57 sourcePath = refType.baseSourceDir() + sourceName; |
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58 } else { |
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59 StringBuffer buf = new StringBuffer(); |
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60 for (int i = 0; i < sourcePath.length(); ++i) { |
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61 char ch = sourcePath.charAt(i); |
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62 if (ch == '/') { |
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63 buf.append(File.separatorChar); |
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64 } else { |
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65 buf.append(ch); |
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66 } |
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67 } |
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68 sourcePath = buf.toString(); |
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69 } |
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70 isConverted = true; |
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71 } |
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72 return sourcePath; |
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73 } |
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74 } |
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75 |
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76 private class LineTableRecord { |
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77 int jplsStart; |
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78 int jplsEnd; |
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79 int jplsLineInc; |
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80 int njplsStart; |
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81 int njplsEnd; |
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82 int fileId; |
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83 } |
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84 |
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85 private class StratumTableRecord { |
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86 String id; |
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87 int fileIndex; |
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88 int lineIndex; |
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89 } |
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90 |
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91 class Stratum { |
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92 private final int sti; /* stratum index */ |
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93 |
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94 private Stratum(int sti) { |
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95 this.sti = sti; |
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96 } |
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97 |
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98 String id() { |
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99 return stratumTable[sti].id; |
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100 } |
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101 |
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102 boolean isJava() { |
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103 return sti == baseStratumIndex; |
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104 } |
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105 |
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106 /** |
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107 * Return all the sourceNames for this stratum. |
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108 * Look from our starting fileIndex upto the starting |
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109 * fileIndex of next stratum - can do this since there |
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110 * is always a terminator stratum. |
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111 * Default sourceName (the first one) must be first. |
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112 */ |
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113 List<String> sourceNames(ReferenceTypeImpl refType) { |
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114 int i; |
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115 int fileIndexStart = stratumTable[sti].fileIndex; |
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116 /* one past end */ |
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117 int fileIndexEnd = stratumTable[sti+1].fileIndex; |
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118 List<String> result = new ArrayList<String>(fileIndexEnd - fileIndexStart); |
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119 for (i = fileIndexStart; i < fileIndexEnd; ++i) { |
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120 result.add(fileTable[i].sourceName); |
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121 } |
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122 return result; |
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123 } |
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124 |
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125 /** |
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126 * Return all the sourcePaths for this stratum. |
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127 * Look from our starting fileIndex upto the starting |
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128 * fileIndex of next stratum - can do this since there |
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129 * is always a terminator stratum. |
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130 * Default sourcePath (the first one) must be first. |
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131 */ |
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132 List<String> sourcePaths(ReferenceTypeImpl refType) { |
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133 int i; |
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134 int fileIndexStart = stratumTable[sti].fileIndex; |
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135 /* one past end */ |
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136 int fileIndexEnd = stratumTable[sti+1].fileIndex; |
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137 List<String> result = new ArrayList<String>(fileIndexEnd - fileIndexStart); |
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138 for (i = fileIndexStart; i < fileIndexEnd; ++i) { |
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139 result.add(fileTable[i].getSourcePath(refType)); |
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140 } |
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141 return result; |
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142 } |
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143 |
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144 LineStratum lineStratum(ReferenceTypeImpl refType, |
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145 int jplsLine) { |
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146 int lti = stiLineTableIndex(sti, jplsLine); |
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147 if (lti < 0) { |
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148 return null; |
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149 } else { |
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150 return new LineStratum(sti, lti, refType, |
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151 jplsLine); |
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152 } |
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153 } |
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154 } |
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155 |
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156 class LineStratum { |
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157 private final int sti; /* stratum index */ |
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158 private final int lti; /* line table index */ |
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159 private final ReferenceTypeImpl refType; |
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160 private final int jplsLine; |
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161 private String sourceName = null; |
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162 private String sourcePath = null; |
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163 |
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164 private LineStratum(int sti, int lti, |
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165 ReferenceTypeImpl refType, |
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166 int jplsLine) { |
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167 this.sti = sti; |
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168 this.lti = lti; |
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169 this.refType = refType; |
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170 this.jplsLine = jplsLine; |
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171 } |
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172 |
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173 public boolean equals(Object obj) { |
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174 if ((obj != null) && (obj instanceof LineStratum)) { |
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175 LineStratum other = (LineStratum)obj; |
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176 return (lti == other.lti) && |
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177 (sti == other.sti) && |
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178 (lineNumber() == other.lineNumber()) && |
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179 (refType.equals(other.refType)); |
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180 } else { |
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181 return false; |
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182 } |
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183 } |
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184 |
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185 int lineNumber() { |
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186 return stiLineNumber(sti, lti, jplsLine); |
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187 } |
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188 |
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189 /** |
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190 * Fetch the source name and source path for |
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191 * this line, converting or constructing |
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192 * the source path if needed. |
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193 */ |
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194 void getSourceInfo() { |
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195 if (sourceName != null) { |
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196 // already done |
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197 return; |
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198 } |
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199 int fti = stiFileTableIndex(sti, lti); |
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200 if (fti == -1) { |
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201 throw new InternalError( |
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202 "Bad SourceDebugExtension, no matching source id " + |
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203 lineTable[lti].fileId + " jplsLine: " + jplsLine); |
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204 } |
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205 FileTableRecord ftr = fileTable[fti]; |
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206 sourceName = ftr.sourceName; |
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207 sourcePath = ftr.getSourcePath(refType); |
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208 } |
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209 |
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210 String sourceName() { |
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211 getSourceInfo(); |
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212 return sourceName; |
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213 } |
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214 |
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215 String sourcePath() { |
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216 getSourceInfo(); |
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217 return sourcePath; |
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218 } |
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219 } |
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220 |
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221 private FileTableRecord[] fileTable = null; |
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222 private LineTableRecord[] lineTable = null; |
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223 private StratumTableRecord[] stratumTable = null; |
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224 |
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225 private int fileIndex = 0; |
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226 private int lineIndex = 0; |
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227 private int stratumIndex = 0; |
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228 private int currentFileId = 0; |
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229 |
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230 private int defaultStratumIndex = -1; |
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231 private int baseStratumIndex = -2; /* so as not to match -1 above */ |
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232 private int sdePos = 0; |
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233 |
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234 final String sourceDebugExtension; |
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235 String jplsFilename = null; |
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236 String defaultStratumId = null; |
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237 boolean isValid = false; |
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238 |
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239 SDE(String sourceDebugExtension) { |
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240 this.sourceDebugExtension = sourceDebugExtension; |
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241 decode(); |
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242 } |
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243 |
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244 SDE() { |
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245 this.sourceDebugExtension = null; |
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246 createProxyForAbsentSDE(); |
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247 } |
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248 |
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249 char sdePeek() { |
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250 if (sdePos >= sourceDebugExtension.length()) { |
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251 syntax(); |
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252 } |
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253 return sourceDebugExtension.charAt(sdePos); |
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254 } |
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255 |
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256 char sdeRead() { |
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257 if (sdePos >= sourceDebugExtension.length()) { |
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258 syntax(); |
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259 } |
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260 return sourceDebugExtension.charAt(sdePos++); |
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261 } |
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262 |
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263 void sdeAdvance() { |
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264 sdePos++; |
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265 } |
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266 |
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267 void syntax() { |
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268 throw new InternalError("bad SourceDebugExtension syntax - position " + |
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269 sdePos); |
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270 } |
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271 |
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272 void syntax(String msg) { |
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273 throw new InternalError("bad SourceDebugExtension syntax: " + msg); |
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274 } |
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275 |
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276 void assureLineTableSize() { |
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277 int len = lineTable == null? 0 : lineTable.length; |
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278 if (lineIndex >= len) { |
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279 int i; |
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280 int newLen = len == 0? INIT_SIZE_LINE : len * 2; |
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281 LineTableRecord[] newTable = new LineTableRecord[newLen]; |
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282 for (i = 0; i < len; ++i) { |
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283 newTable[i] = lineTable[i]; |
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284 } |
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285 for (; i < newLen; ++i) { |
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286 newTable[i] = new LineTableRecord(); |
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287 } |
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288 lineTable = newTable; |
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289 } |
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290 } |
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291 |
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292 void assureFileTableSize() { |
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293 int len = fileTable == null? 0 : fileTable.length; |
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294 if (fileIndex >= len) { |
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295 int i; |
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296 int newLen = len == 0? INIT_SIZE_FILE : len * 2; |
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297 FileTableRecord[] newTable = new FileTableRecord[newLen]; |
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298 for (i = 0; i < len; ++i) { |
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299 newTable[i] = fileTable[i]; |
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300 } |
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301 for (; i < newLen; ++i) { |
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302 newTable[i] = new FileTableRecord(); |
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303 } |
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304 fileTable = newTable; |
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305 } |
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306 } |
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307 |
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308 void assureStratumTableSize() { |
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309 int len = stratumTable == null? 0 : stratumTable.length; |
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310 if (stratumIndex >= len) { |
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311 int i; |
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312 int newLen = len == 0? INIT_SIZE_STRATUM : len * 2; |
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313 StratumTableRecord[] newTable = new StratumTableRecord[newLen]; |
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314 for (i = 0; i < len; ++i) { |
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315 newTable[i] = stratumTable[i]; |
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316 } |
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317 for (; i < newLen; ++i) { |
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318 newTable[i] = new StratumTableRecord(); |
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319 } |
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320 stratumTable = newTable; |
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321 } |
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322 } |
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323 |
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324 String readLine() { |
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325 StringBuffer sb = new StringBuffer(); |
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326 char ch; |
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327 |
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328 ignoreWhite(); |
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329 while (((ch = sdeRead()) != '\n') && (ch != '\r')) { |
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330 sb.append((char)ch); |
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331 } |
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332 // check for CR LF |
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333 if ((ch == '\r') && (sdePeek() == '\n')) { |
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334 sdeRead(); |
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335 } |
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336 ignoreWhite(); // leading white |
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337 return sb.toString(); |
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338 } |
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339 |
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340 private int defaultStratumTableIndex() { |
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341 if ((defaultStratumIndex == -1) && (defaultStratumId != null)) { |
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342 defaultStratumIndex = |
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343 stratumTableIndex(defaultStratumId); |
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344 } |
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345 return defaultStratumIndex; |
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346 } |
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347 |
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348 int stratumTableIndex(String stratumId) { |
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349 int i; |
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350 |
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351 if (stratumId == null) { |
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352 return defaultStratumTableIndex(); |
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353 } |
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354 for (i = 0; i < (stratumIndex-1); ++i) { |
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355 if (stratumTable[i].id.equals(stratumId)) { |
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356 return i; |
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357 } |
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358 } |
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359 return defaultStratumTableIndex(); |
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360 } |
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361 |
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362 Stratum stratum(String stratumID) { |
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363 int sti = stratumTableIndex(stratumID); |
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364 return new Stratum(sti); |
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365 } |
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366 |
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367 List<String> availableStrata() { |
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368 List<String> strata = new ArrayList<String>(); |
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369 |
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370 for (int i = 0; i < (stratumIndex-1); ++i) { |
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371 StratumTableRecord rec = stratumTable[i]; |
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372 strata.add(rec.id); |
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373 } |
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374 return strata; |
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375 } |
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376 |
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377 /***************************** |
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378 * below functions/methods are written to compile under either Java or C |
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379 * |
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380 * Needed support functions: |
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381 * sdePeek() |
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382 * sdeRead() |
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383 * sdeAdvance() |
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384 * readLine() |
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385 * assureLineTableSize() |
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386 * assureFileTableSize() |
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387 * assureStratumTableSize() |
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388 * syntax() |
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389 * |
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390 * stratumTableIndex(String) |
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391 * |
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392 * Needed support variables: |
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393 * lineTable |
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394 * lineIndex |
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395 * fileTable |
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396 * fileIndex |
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397 * currentFileId |
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398 * |
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399 * Needed types: |
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400 * String |
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401 * |
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402 * Needed constants: |
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403 * NullString |
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404 */ |
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405 |
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406 void ignoreWhite() { |
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407 char ch; |
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408 |
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409 while (((ch = sdePeek()) == ' ') || (ch == '\t')) { |
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410 sdeAdvance(); |
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411 } |
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412 } |
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413 |
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414 void ignoreLine() { |
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415 char ch; |
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416 |
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417 while (((ch = sdeRead()) != '\n') && (ch != '\r')) { |
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418 } |
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419 /* check for CR LF */ |
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420 if ((ch == '\r') && (sdePeek() == '\n')) { |
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421 sdeAdvance(); |
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422 } |
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423 ignoreWhite(); /* leading white */ |
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424 } |
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425 |
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426 int readNumber() { |
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427 int value = 0; |
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428 char ch; |
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429 |
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430 ignoreWhite(); |
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431 while (((ch = sdePeek()) >= '0') && (ch <= '9')) { |
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432 sdeAdvance(); |
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433 value = (value * 10) + ch - '0'; |
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434 } |
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435 ignoreWhite(); |
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436 return value; |
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437 } |
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438 |
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439 void storeFile(int fileId, String sourceName, String sourcePath) { |
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440 assureFileTableSize(); |
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441 fileTable[fileIndex].fileId = fileId; |
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442 fileTable[fileIndex].sourceName = sourceName; |
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443 fileTable[fileIndex].sourcePath = sourcePath; |
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444 ++fileIndex; |
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445 } |
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446 |
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447 void fileLine() { |
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448 int hasAbsolute = 0; /* acts as boolean */ |
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449 int fileId; |
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450 String sourceName; |
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451 String sourcePath = null; |
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452 |
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453 /* is there an absolute filename? */ |
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454 if (sdePeek() == '+') { |
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455 sdeAdvance(); |
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456 hasAbsolute = 1; |
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457 } |
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458 fileId = readNumber(); |
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459 sourceName = readLine(); |
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460 if (hasAbsolute == 1) { |
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461 sourcePath = readLine(); |
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462 } |
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463 |
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464 storeFile(fileId, sourceName, sourcePath); |
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465 } |
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466 |
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467 void storeLine(int jplsStart, int jplsEnd, int jplsLineInc, |
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468 int njplsStart, int njplsEnd, int fileId) { |
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469 assureLineTableSize(); |
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470 lineTable[lineIndex].jplsStart = jplsStart; |
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471 lineTable[lineIndex].jplsEnd = jplsEnd; |
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472 lineTable[lineIndex].jplsLineInc = jplsLineInc; |
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473 lineTable[lineIndex].njplsStart = njplsStart; |
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474 lineTable[lineIndex].njplsEnd = njplsEnd; |
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475 lineTable[lineIndex].fileId = fileId; |
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476 ++lineIndex; |
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477 } |
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478 |
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479 /** |
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480 * Parse line translation info. Syntax is |
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481 * <NJ-start-line> [ # <file-id> ] [ , <line-count> ] : |
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482 * <J-start-line> [ , <line-increment> ] CR |
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483 */ |
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484 void lineLine() { |
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485 int lineCount = 1; |
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486 int lineIncrement = 1; |
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487 int njplsStart; |
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488 int jplsStart; |
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489 |
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490 njplsStart = readNumber(); |
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491 |
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492 /* is there a fileID? */ |
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493 if (sdePeek() == '#') { |
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494 sdeAdvance(); |
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495 currentFileId = readNumber(); |
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496 } |
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497 |
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498 /* is there a line count? */ |
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499 if (sdePeek() == ',') { |
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500 sdeAdvance(); |
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501 lineCount = readNumber(); |
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502 } |
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503 |
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504 if (sdeRead() != ':') { |
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505 syntax(); |
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506 } |
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507 jplsStart = readNumber(); |
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508 if (sdePeek() == ',') { |
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509 sdeAdvance(); |
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510 lineIncrement = readNumber(); |
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511 } |
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512 ignoreLine(); /* flush the rest */ |
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513 |
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514 storeLine(jplsStart, |
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515 jplsStart + (lineCount * lineIncrement) -1, |
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516 lineIncrement, |
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517 njplsStart, |
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518 njplsStart + lineCount -1, |
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519 currentFileId); |
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520 } |
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521 |
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522 /** |
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523 * Until the next stratum section, everything after this |
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524 * is in stratumId - so, store the current indicies. |
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525 */ |
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526 void storeStratum(String stratumId) { |
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527 /* remove redundant strata */ |
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528 if (stratumIndex > 0) { |
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529 if ((stratumTable[stratumIndex-1].fileIndex |
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530 == fileIndex) && |
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531 (stratumTable[stratumIndex-1].lineIndex |
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532 == lineIndex)) { |
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533 /* nothing changed overwrite it */ |
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534 --stratumIndex; |
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535 } |
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536 } |
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537 /* store the results */ |
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538 assureStratumTableSize(); |
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539 stratumTable[stratumIndex].id = stratumId; |
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540 stratumTable[stratumIndex].fileIndex = fileIndex; |
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541 stratumTable[stratumIndex].lineIndex = lineIndex; |
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542 ++stratumIndex; |
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543 currentFileId = 0; |
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544 } |
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545 |
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546 /** |
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547 * The beginning of a stratum's info |
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548 */ |
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549 void stratumSection() { |
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550 storeStratum(readLine()); |
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551 } |
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552 |
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553 void fileSection() { |
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554 ignoreLine(); |
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555 while (sdePeek() != '*') { |
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556 fileLine(); |
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557 } |
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558 } |
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559 |
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560 void lineSection() { |
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561 ignoreLine(); |
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562 while (sdePeek() != '*') { |
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563 lineLine(); |
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564 } |
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565 } |
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566 |
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567 /** |
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568 * Ignore a section we don't know about. |
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569 */ |
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570 void ignoreSection() { |
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571 ignoreLine(); |
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572 while (sdePeek() != '*') { |
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573 ignoreLine(); |
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574 } |
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575 } |
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576 |
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577 /** |
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578 * A base "Java" stratum is always available, though |
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579 * it is not in the SourceDebugExtension. |
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580 * Create the base stratum. |
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581 */ |
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582 void createJavaStratum() { |
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583 baseStratumIndex = stratumIndex; |
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584 storeStratum(BASE_STRATUM_NAME); |
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585 storeFile(1, jplsFilename, NullString); |
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586 /* JPL line numbers cannot exceed 65535 */ |
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587 storeLine(1, 65536, 1, 1, 65536, 1); |
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588 storeStratum("Aux"); /* in case they don't declare */ |
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589 } |
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590 |
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591 /** |
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592 * Decode a SourceDebugExtension which is in SourceMap format. |
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593 * This is the entry point into the recursive descent parser. |
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594 */ |
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595 void decode() { |
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596 /* check for "SMAP" - allow EOF if not ours */ |
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597 if ((sourceDebugExtension.length() < 4) || |
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598 (sdeRead() != 'S') || |
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599 (sdeRead() != 'M') || |
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600 (sdeRead() != 'A') || |
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601 (sdeRead() != 'P')) { |
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602 return; /* not our info */ |
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603 } |
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604 ignoreLine(); /* flush the rest */ |
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605 jplsFilename = readLine(); |
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606 defaultStratumId = readLine(); |
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607 createJavaStratum(); |
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608 while (true) { |
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609 if (sdeRead() != '*') { |
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610 syntax(); |
|
611 } |
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612 switch (sdeRead()) { |
|
613 case 'S': |
|
614 stratumSection(); |
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615 break; |
|
616 case 'F': |
|
617 fileSection(); |
|
618 break; |
|
619 case 'L': |
|
620 lineSection(); |
|
621 break; |
|
622 case 'E': |
|
623 /* set end points */ |
|
624 storeStratum("*terminator*"); |
|
625 isValid = true; |
|
626 return; |
|
627 default: |
|
628 ignoreSection(); |
|
629 } |
|
630 } |
|
631 } |
|
632 |
|
633 void createProxyForAbsentSDE() { |
|
634 jplsFilename = null; |
|
635 defaultStratumId = BASE_STRATUM_NAME; |
|
636 defaultStratumIndex = stratumIndex; |
|
637 createJavaStratum(); |
|
638 storeStratum("*terminator*"); |
|
639 } |
|
640 |
|
641 /***************** query functions ***********************/ |
|
642 |
|
643 private int stiLineTableIndex(int sti, int jplsLine) { |
|
644 int i; |
|
645 int lineIndexStart; |
|
646 int lineIndexEnd; |
|
647 |
|
648 lineIndexStart = stratumTable[sti].lineIndex; |
|
649 /* one past end */ |
|
650 lineIndexEnd = stratumTable[sti+1].lineIndex; |
|
651 for (i = lineIndexStart; i < lineIndexEnd; ++i) { |
|
652 if ((jplsLine >= lineTable[i].jplsStart) && |
|
653 (jplsLine <= lineTable[i].jplsEnd)) { |
|
654 return i; |
|
655 } |
|
656 } |
|
657 return -1; |
|
658 } |
|
659 |
|
660 private int stiLineNumber(int sti, int lti, int jplsLine) { |
|
661 return lineTable[lti].njplsStart + |
|
662 (((jplsLine - lineTable[lti].jplsStart) / |
|
663 lineTable[lti].jplsLineInc)); |
|
664 } |
|
665 |
|
666 private int fileTableIndex(int sti, int fileId) { |
|
667 int i; |
|
668 int fileIndexStart = stratumTable[sti].fileIndex; |
|
669 /* one past end */ |
|
670 int fileIndexEnd = stratumTable[sti+1].fileIndex; |
|
671 for (i = fileIndexStart; i < fileIndexEnd; ++i) { |
|
672 if (fileTable[i].fileId == fileId) { |
|
673 return i; |
|
674 } |
|
675 } |
|
676 return -1; |
|
677 } |
|
678 |
|
679 private int stiFileTableIndex(int sti, int lti) { |
|
680 return fileTableIndex(sti, lineTable[lti].fileId); |
|
681 } |
|
682 |
|
683 boolean isValid() { |
|
684 return isValid; |
|
685 } |
|
686 } |