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annotate trunk/src/cmd/Statistics.d @ 401:fcdf7ac5ad27

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Improved statistics generation. Now multiple files can be passed to the stats/statistics command. Whitespace characters are counted correctly as well.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Sat, 22 Sep 2007 19:49:54 +0200
parents 33b566df6af4
children ea8c7459f1c4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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.Statistics;
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6 import dil.Token;
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7 import dil.File;
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8 import dil.Lexer;
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9 import common;
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10
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11 struct Statistics
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12 {
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13 uint whitespaceCount;
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14 uint wsTokenCount;
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15 uint keywordCount;
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16 uint identCount;
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17 uint numberCount;
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18 uint commentCount;
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19 uint linesOfCode;
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20
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21 void opAddAssign(Statistics s)
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22 {
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23 this.whitespaceCount += s.whitespaceCount;
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24 this.wsTokenCount += s.wsTokenCount;
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25 this.keywordCount += s.keywordCount;
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26 this.identCount += s.identCount;
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27 this.numberCount += s.numberCount;
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28 this.commentCount += s.commentCount;
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29 this.linesOfCode += s.linesOfCode;
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30 }
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31 }
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32
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33 void execute(string[] filePaths)
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34 {
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35 Statistics[] stats;
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36 foreach (filePath; filePaths)
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37 stats ~= getStatistics(filePath);
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38
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39 Statistics total;
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40
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41 foreach (i, ref stat; stats)
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42 {
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43 total += stat;
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44 Stdout.formatln(
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45 "----\n"
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46 "File: {0}\n"
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47 "Whitespace character count: {1}\n"
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48 "Whitespace token count: {2}\n"
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49 "Keyword count: {3}\n"
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50 "Identifier count: {4}\n"
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51 "Number count: {5}\n"
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52 "Comment count: {6}\n"
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53 "Lines of code: {7}",
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54 filePaths[i],
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55 stat.whitespaceCount,
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56 stat.wsTokenCount,
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57 stat.keywordCount,
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58 stat.identCount,
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59 stat.numberCount,
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60 stat.commentCount,
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61 stat.linesOfCode
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62 );
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63 }
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64
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65 if (filePaths.length > 1)
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66 Stdout.formatln(
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67 "--------------------------------------------------------------------------------\n"
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68 "Total:\n"
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69 "Whitespace character count: {0}\n"
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70 "Whitespace token count: {1}\n"
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71 "Keyword count: {2}\n"
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72 "Identifier count: {3}\n"
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73 "Number count: {4}\n"
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74 "Comment count: {5}\n"
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75 "Lines of code: {6}",
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76 total.whitespaceCount,
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77 total.wsTokenCount,
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78 total.keywordCount,
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79 total.identCount,
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80 total.numberCount,
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81 total.commentCount,
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82 total.linesOfCode
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83 );
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84 }
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85
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86 Statistics getStatistics(string filePath)
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87 {
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88 auto sourceText = loadFile(filePath);
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89 auto lx = new Lexer(sourceText, filePath);
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90
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91 auto token = lx.getTokens();
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92
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93 Statistics stats;
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94
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95 stats.linesOfCode = lx.loc;
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96 // Traverse linked list.
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97 while (token.type != TOK.EOF)
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98 {
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99 token = token.next;
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100
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101 // Count whitespace characters
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102 if (token.ws !is null)
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103 stats.whitespaceCount += countWhitespaceCharacters(token.ws, token.start);
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104
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105 switch (token.type)
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106 {
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107 case TOK.Identifier:
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108 stats.identCount++;
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109 break;
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110 case TOK.Comment:
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111 stats.commentCount++;
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112 break;
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113 case TOK.Int32, TOK.Int64, TOK.Uint32, TOK.Uint64,
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114 TOK.Float32, TOK.Float64, TOK.Float80,
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115 TOK.Imaginary32, TOK.Imaginary64, TOK.Imaginary80:
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116 stats.numberCount++;
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117 break;
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118 default:
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119 if (token.isKeyword)
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120 stats.keywordCount++;
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121 }
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122
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123 if (token.isWhitespace)
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124 stats.wsTokenCount++;
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125 }
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126 return stats;
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127 }
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128
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129 /// Counts newlines, \t, \v, \f and ' ' as whitespace characters.
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130 uint countWhitespaceCharacters(char* p, char* end)
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131 {
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132 uint count;
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133 Loop:
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134 while (1)
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135 {
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136 switch (*p)
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137 {
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138 case '\r':
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139 if (p[1] == '\n')
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140 ++p;
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141 case '\n':
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142 ++p;
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143 ++count;
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144 break;
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145 case LS[0]:
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146 if (p[1] == LS[1] && (p[2] == LS[2] || p[2] == PS[2]))
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147 {
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148 p += 3;
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149 ++count;
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150 break;
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151 }
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152 default:
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153 if (!dil.Lexer.isspace(*p))
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154 break Loop; // Exit loop.
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155 ++p;
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156 ++count;
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157 }
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158 }
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159 assert(p is end);
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160 return count;
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161 }