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annotate trunk/src/cmd/ImportGraph.d @ 576:0df647660e76

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Moved Lexer.d to new package 'lexer'.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Sat, 05 Jan 2008 16:53:27 +0100
parents 7a6bfa569a52
children fa6d3c52757d
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1 /++
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2 Author: Aziz Köksal
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3 License: GPL3
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4 +/
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5 module cmd.ImportGraph;
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6 import dil.SyntaxTree;
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7 import dil.Declarations;
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8 import dil.Token;
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9 import dil.File;
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10 import dil.Module;
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11 import dil.Settings;
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12 import tango.text.Regex : RegExp = Regex;
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13 import tango.io.FilePath;
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14 import tango.io.FileConst;
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15 import tango.text.Util;
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16 import common;
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17
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18 alias FileConst.PathSeparatorChar dirSep;
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19
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20 enum IGraphOption
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21 {
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22 None,
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23 IncludeUnlocatableModules = 1,
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24 PrintDot = 1<<1,
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25 HighlightCyclicEdges = 1<<2,
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26 HighlightCyclicVertices = 1<<3,
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27 GroupByPackageNames = 1<<4,
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28 GroupByFullPackageName = 1<<5,
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29 PrintPaths = 1<<6,
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30 PrintList = 1<<7,
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31 MarkCyclicModules = 1<<8,
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32 }
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33
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34 string findModulePath(string moduleFQN, string[] importPaths)
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35 {
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36 string modulePath;
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37 foreach (path; importPaths)
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38 {
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39 modulePath = path ~ dirSep ~ moduleFQN ~ ".d";
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40 // TODO: also check for *.di?
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41 if ((new FilePath(modulePath)).exists())
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42 return modulePath;
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43 }
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44 return null;
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45 }
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46
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47 class Edge
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48 {
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49 Vertex outgoing;
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50 Vertex incoming;
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51 bool isCyclic;
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52 this(Vertex o, Vertex i)
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53 {
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54 this.outgoing = o;
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55 this.incoming = i;
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56 }
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57 }
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58
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59 class Vertex : Module
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60 {
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61 uint id;
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62 Vertex[] incoming;
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63 bool isCyclic; /// Whether this vertex is in a cyclic relationship with other vertices.
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64
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65 this(string filePath)
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66 {
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67 super(filePath, true);
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68 }
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69
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70 Vertex[] outgoing()
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71 {
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72 return cast(Vertex[])super.modules;
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73 }
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74 }
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75
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76 void execute(string filePath, string[] importPaths, string[] strRegexps, uint levels, IGraphOption options)
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77 {
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78 // Init regular expressions.
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79 RegExp[] regexps;
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80 foreach (strRegexp; strRegexps)
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81 regexps ~= new RegExp(strRegexp);
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82
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83 // Add directory of file and global directories to import paths.
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84 auto fileDir = (new FilePath(filePath)).folder();
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85 if (fileDir.length)
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86 importPaths ~= fileDir;
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87 importPaths ~= GlobalSettings.importPaths;
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88
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89 Vertex[string] loadedModules;
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90 Vertex[] loadedModulesList; // Ordered list of loaded modules.
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91 Edge edges[];
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92
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93 Vertex loadModule(string moduleFQNPath)
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94 {
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95 auto mod_ = moduleFQNPath in loadedModules;
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96 if (mod_ !is null)
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97 return *mod_; // Return already loaded module.
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98
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99 // Ignore module names matching regular expressions.
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100 foreach (rx; regexps)
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101 if (rx.test(replace(moduleFQNPath, dirSep, '.')))
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102 return null;
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103
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104 auto modulePath = findModulePath(moduleFQNPath, importPaths);
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105 Vertex mod;
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106 if (modulePath is null)
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107 {
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108 if (options & IGraphOption.IncludeUnlocatableModules)
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109 {
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110 mod = new Vertex(null);
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111 mod.setFQN(replace(moduleFQNPath, dirSep, '.'));
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112 loadedModules[moduleFQNPath] = mod;
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113 loadedModulesList ~= mod;
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114 mod.id = loadedModulesList.length -1;
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115 }
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116 }
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117 else
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118 {
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119 // writefln(modulePath);
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120 mod = new Vertex(modulePath);
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121 mod.parse();
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122
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123 loadedModules[moduleFQNPath] = mod;
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124 loadedModulesList ~= mod;
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125 mod.id = loadedModulesList.length -1;
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126
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127 auto moduleFQNs = mod.getImports();
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128
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129 foreach (moduleFQN_; moduleFQNs)
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130 {
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131 auto loaded_mod = loadModule(moduleFQN_);
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132 if (loaded_mod !is null)
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133 {
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134 edges ~= new Edge(mod, loaded_mod);
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135 mod.modules ~= loaded_mod;
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136 loaded_mod.incoming ~= mod;
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137 }
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138 }
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139 }
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140 return mod;
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141 }
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142
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143 auto mod = new Vertex(filePath);
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144 mod.parse();
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145
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146 auto moduleFQNs = mod.getImports();
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147
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148 loadedModules[mod.getFQNPath()] = mod;
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149 loadedModulesList ~= mod;
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150 mod.id = 0; // loadedModulesList.length -1
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151
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152 foreach (moduleFQN_; moduleFQNs)
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153 {
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154 auto loaded_mod = loadModule(moduleFQN_);
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155 if (loaded_mod !is null)
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156 {
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157 edges ~= new Edge(mod, loaded_mod);
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158 mod.modules ~= loaded_mod;
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159 loaded_mod.incoming ~= mod;
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160 }
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161 }
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162 // Finished loading modules.
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163
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164 // Check that every module has at least one incoming or outgoing edge.
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165 assert(
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166 delegate {
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167 foreach (mod; loadedModulesList)
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168 if (mod.incoming.length == 0 && mod.outgoing.length == 0)
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169 throw new Exception("module "~mod.getFQN()~" has no edges in the graph.");
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170 return true;
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171 }() == true
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172 );
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173
427
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174 if (options & (IGraphOption.PrintList | IGraphOption.PrintPaths))
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175 {
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176 if (options & IGraphOption.MarkCyclicModules)
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177 analyzeGraph(loadedModulesList, edges.dup);
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178
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179 if (options & IGraphOption.PrintPaths)
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180 printPaths(loadedModulesList, levels+1, "");
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181 else
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182 printList(loadedModulesList, levels+1, "");
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183 }
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184 else
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185 printDot(loadedModulesList, edges, options);
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186 }
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187
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188 void printPaths(Vertex[] vertices, uint level, char[] indent)
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189 {
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190 if (!level)
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191 return;
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192 foreach (vertex; vertices)
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193 {
427
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194 Stdout(indent)((vertex.isCyclic?"*":"")~vertex.filePath).newline;
375
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195 if (vertex.outgoing.length)
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196 printPaths(vertex.outgoing, level-1, indent~" ");
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197 }
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198 }
370
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199
375
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200 void printList(Vertex[] vertices, uint level, char[] indent)
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201 {
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202 if (!level)
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203 return;
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204 foreach (vertex; vertices)
370
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205 {
427
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206 Stdout(indent)((vertex.isCyclic?"*":"")~vertex.getFQN()).newline;
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207 if (vertex.outgoing.length)
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208 printList(vertex.outgoing, level-1, indent~" ");
370
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209 }
375
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210 }
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211
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212 void printDot(Vertex[] loadedModulesList, Edge[] edges, IGraphOption options)
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213 {
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214 Vertex[][string] verticesByPckgName;
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215 if (options & IGraphOption.GroupByFullPackageName)
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216 foreach (module_; loadedModulesList)
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217 verticesByPckgName[module_.packageName] ~= module_;
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218
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219 if (options & (IGraphOption.HighlightCyclicVertices |
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220 IGraphOption.HighlightCyclicEdges))
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221 analyzeGraph(loadedModulesList, edges.dup);
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222
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223 Stdout("Digraph ModuleDependencies\n{\n");
375
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224
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225 if (options & IGraphOption.HighlightCyclicVertices)
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226 foreach (i, module_; loadedModulesList)
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227 Stdout.format(` n{0} [label="{1}"{2}];`, i, module_.getFQN(), (module_.isCyclic ? ",style=filled,fillcolor=tomato" : "")).newline;
375
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228 else
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229 foreach (i, module_; loadedModulesList)
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230 Stdout.format(` n{0} [label="{1}"];`, i, module_.getFQN()).newline;
375
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231
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232 foreach (edge; edges)
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233 Stdout.format(` n{0} -> n{1}{2};`, edge.outgoing.id, edge.incoming.id, (edge.isCyclic ? "[color=red]" : "")).newline;
375
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234
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235 if (options & IGraphOption.GroupByFullPackageName)
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236 foreach (packageName, vertices; verticesByPckgName)
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237 {
391
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238 Stdout.format(` subgraph "cluster_{0}" {`\n` label="{1}";color=blue;`"\n ", packageName, packageName);
375
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239 foreach (module_; vertices)
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240 Stdout.format(`n{0};`, module_.id);
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241 Stdout("\n }\n");
375
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242 }
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243
391
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244 Stdout("}\n");
364
1059295c2727 - Every command module has an execute method now.
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245 }
370
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246
431
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247 void analyzeGraph(Vertex[] vertices_init, Edge[] edges)
370
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248 {
431
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249 void recursive(Vertex[] vertices)
370
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250 {
375
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251 foreach (idx, vertex; vertices)
370
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252 {
375
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253 uint outgoing, incoming;
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254 foreach (j, edge; edges)
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255 {
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256 if (edge.outgoing is vertex)
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257 outgoing++;
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258 if (edge.incoming is vertex)
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259 incoming++;
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260 }
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261
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262 if (outgoing == 0)
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263 {
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264 if (incoming != 0)
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265 {
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266 // Vertex is a sink.
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267 alias outgoing i; // Reuse
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268 alias incoming j; // Reuse
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269 // Remove edges.
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270 for (i=j=0; i < edges.length; i++)
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271 if (edges[i].incoming !is vertex)
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272 edges[j++] = edges[i];
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273 edges.length = j;
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274 vertices = vertices[0..idx] ~ vertices[idx+1..$];
431
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275 recursive(vertices);
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276 return;
375
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277 }
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278 else
431
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279 {
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280 // Edges to this vertex were removed previously.
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281 // Only remove vertex now.
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282 vertices = vertices[0..idx] ~ vertices[idx+1..$];
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283 recursive(vertices);
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284 return;
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285 }
375
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286 }
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287 else if (incoming == 0)
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288 {
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289 // Vertex is a source
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290 alias outgoing i; // Reuse
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291 alias incoming j; // Reuse
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292 // Remove edges.
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293 for (i=j=0; i < edges.length; i++)
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294 if (edges[i].outgoing !is vertex)
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295 edges[j++] = edges[i];
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296 edges.length = j;
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297 vertices = vertices[0..idx] ~ vertices[idx+1..$];
431
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298 recursive(vertices);
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diff changeset
299 return;
375
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300 }
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301 // else
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302 // {
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303 // // source && sink
431
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304 // // continue loop.
375
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305 // }
370
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306 }
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307
375
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308 // When reaching this point it means only cylic edges and vertices are left.
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309 foreach (vertex; vertices)
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diff changeset
310 vertex.isCyclic = true;
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311 foreach (edge; edges)
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diff changeset
312 if (edge)
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diff changeset
313 edge.isCyclic = true;
370
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314 }
431
7a6bfa569a52 Fix: analyzeGraph() should work correctly now.
Aziz K?ksal <aziz.koeksal@gmail.com>
parents: 427
diff changeset
315 recursive(vertices_init);
370
ae4afb66768f - Renamed findModule() to findModulePath().
aziz
parents: 368
diff changeset
316 }