Mercurial > projects > dil
annotate src/cmd/Highlight.d @ 832:80eb3251e010
Updated to Tango 0.99.7.
author | Aziz K?ksal <aziz.koeksal@gmail.com> |
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date | Fri, 25 Jul 2008 15:17:07 +0200 |
parents | 28e1ff1dcfcf |
children | 451ede0105e0 |
rev | line source |
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363 | 1 /++ |
2 Author: Aziz Köksal | |
3 License: GPL3 | |
4 +/ | |
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5 module cmd.Highlight; |
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6 |
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7 import dil.ast.DefaultVisitor; |
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8 import dil.ast.Node, |
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9 dil.ast.Declaration, |
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10 dil.ast.Statement, |
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11 dil.ast.Expression, |
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12 dil.ast.Types; |
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13 import dil.lexer.Lexer; |
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14 import dil.parser.Parser; |
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15 import dil.semantic.Module; |
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16 import dil.SourceText; |
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17 import dil.Information; |
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18 import SettingsLoader; |
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19 import Settings; |
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20 import common; |
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21 |
832
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22 import tango.io.Buffer; |
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23 import tango.io.Print; |
363 | 24 |
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25 /// The highlight command. |
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26 struct HighlightCommand |
364 | 27 { |
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28 /// Options for the command. |
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29 enum Option |
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30 { |
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31 None = 0, |
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32 Tokens = 1, |
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33 Syntax = 1<<1, |
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34 HTML = 1<<2, |
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35 XML = 1<<3, |
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36 PrintLines = 1<<4 |
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37 } |
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38 alias Option Options; |
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39 |
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40 Options options; /// Command options. |
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41 string filePath; /// File path to the module to be highlighted. |
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42 InfoManager infoMan; |
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43 |
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44 /// Adds o to the options. |
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45 void add(Option o) |
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46 { |
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47 options |= o; |
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48 } |
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49 |
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50 /// Executes the command. |
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51 void run() |
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52 { |
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53 add(HighlightCommand.Option.Tokens); |
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54 if (!(options & (Option.XML | Option.HTML))) |
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55 add(Option.XML); // Default to XML. |
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56 |
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57 auto mapFilePath = options & Option.HTML ? GlobalSettings.htmlMapFile |
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58 : GlobalSettings.xmlMapFile; |
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59 auto map = TagMapLoader(infoMan).load(mapFilePath); |
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60 auto tags = new TagMap(map); |
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61 |
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62 if (infoMan.hasInfo) |
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63 return; |
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64 |
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65 if (options & Option.Syntax) |
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66 highlightSyntax(filePath, tags, Stdout, options); |
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67 else |
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68 highlightTokens(filePath, tags, Stdout, options); |
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69 } |
364 | 70 } |
71 | |
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72 /// Escapes the characters '<', '>' and '&' with named character entities. |
363 | 73 char[] xml_escape(char[] text) |
74 { | |
75 char[] result; | |
76 foreach(c; text) | |
77 switch(c) | |
78 { | |
79 case '<': result ~= "<"; break; | |
80 case '>': result ~= ">"; break; | |
81 case '&': result ~= "&"; break; | |
82 default: result ~= c; | |
83 } | |
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84 if (result.length != text.length) |
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85 return result; |
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86 // Nothing escaped. Return original text. |
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87 delete result; |
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88 return text; |
363 | 89 } |
90 | |
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91 /// Maps tokens to (format) strings. |
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92 class TagMap |
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93 { |
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94 string[string] table; |
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95 string[TOK.MAX] tokenTable; |
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96 |
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97 this(string[string] table) |
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98 { |
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99 this.table = table; |
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100 Identifier = this["Identifier", "{0}"]; |
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101 String = this["String", "{0}"]; |
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102 Char = this["Char", "{0}"]; |
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103 Number = this["Number", "{0}"]; |
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104 Keyword = this["Keyword", "{0}"]; |
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105 LineC = this["LineC", "{0}"]; |
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106 BlockC = this["BlockC", "{0}"]; |
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107 NestedC = this["NestedC", "{0}"]; |
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108 Shebang = this["Shebang", "{0}"]; |
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109 HLine = this["HLine", "{0}"]; |
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110 Filespec = this["Filespec", "{0}"]; |
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111 Illegal = this["Illegal", "{0}"]; |
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112 Newline = this["Newline", "{0}"]; |
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113 SpecialToken = this["SpecialToken", "{0}"]; |
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114 Declaration = this["Declaration", "d"]; |
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115 Statement = this["Statement", "s"]; |
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116 Expression = this["Expression", "e"]; |
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117 Type = this["Type", "t"]; |
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118 Other = this["Other", "o"]; |
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119 EOF = this["EOF", ""]; |
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120 |
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121 foreach (i, tokStr; tokToString) |
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122 if (auto pStr = tokStr in this.table) |
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123 tokenTable[i] = *pStr; |
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124 } |
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125 |
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126 /// Returns the value for str, or 'fallback' if str is not in the table. |
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127 string opIndex(string str, string fallback = "") |
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128 { |
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129 auto p = str in table; |
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130 if (p) |
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131 return *p; |
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132 return fallback; |
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133 } |
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134 |
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135 /// Returns the value for tok in O(1) time. |
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136 string opIndex(TOK tok) |
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137 { |
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138 return tokenTable[tok]; |
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139 } |
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140 |
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141 /// Shortcuts for quick access. |
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142 string Identifier, String, Char, Number, Keyword, LineC, BlockC, |
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143 NestedC, Shebang, HLine, Filespec, Illegal, Newline, SpecialToken, |
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144 Declaration, Statement, Expression, Type, Other, EOF; |
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145 |
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146 /// Returns the tag for the category 'nc'. |
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147 string getTag(NodeCategory nc) |
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148 { |
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149 string tag; |
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150 switch (nc) |
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151 { alias NodeCategory NC; |
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152 case NC.Declaration: tag = Declaration; break; |
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153 case NC.Statement: tag = Statement; break; |
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154 case NC.Expression: tag = Expression; break; |
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155 case NC.Type: tag = Type; break; |
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156 case NC.Other: tag = Other; break; |
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157 default: assert(0); |
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158 } |
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159 return tag; |
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160 } |
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161 } |
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162 |
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163 /// Find the last occurrence of object in subject. |
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164 /// Returns: the index if found, or -1 if not. |
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165 int rfind(char[] subject, char object) |
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166 { |
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167 foreach_reverse(i, c; subject) |
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168 if (c == object) |
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169 return i; |
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170 return -1; |
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171 } |
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172 |
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173 /// Returns the short class name of a class descending from Node.$(BR) |
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174 /// E.g.: dil.ast.Declarations.ClassDeclaration -> Class |
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175 char[] getShortClassName(Node node) |
363 | 176 { |
177 static char[][] name_table; | |
178 if (name_table is null) | |
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179 name_table = new char[][NodeKind.max+1]; // Create a new table. |
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180 // Look up in table. |
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181 char[] name = name_table[node.kind]; |
363 | 182 if (name !is null) |
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183 return name; // Return cached name. |
363 | 184 |
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185 name = node.classinfo.name; // Get the fully qualified name of the class. |
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186 name = name[rfind(name, '.')+1 .. $]; // Remove package and module name. |
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187 |
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188 uint suffixLength; |
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189 switch (node.category) |
363 | 190 { |
191 alias NodeCategory NC; | |
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192 case NC.Declaration: |
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193 suffixLength = "Declaration".length; |
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194 break; |
363 | 195 case NC.Statement: |
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196 suffixLength = "Statement".length; |
363 | 197 break; |
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198 case NC.Expression: |
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199 suffixLength = "Expression".length; |
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200 break; |
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201 case NC.Type: |
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202 suffixLength = "Type".length; |
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203 break; |
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204 case NC.Other: |
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205 break; |
363 | 206 default: |
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207 assert(0); |
363 | 208 } |
209 // Remove common suffix. | |
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210 name = name[0 .. $ - suffixLength]; |
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211 // Store the name in the table. |
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212 name_table[node.kind] = name; |
363 | 213 return name; |
214 } | |
215 | |
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216 /// Extended token structure. |
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217 struct TokenEx |
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218 { |
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219 Token* token; /// The lexer token. |
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220 Node[] beginNodes; /// beginNodes[n].begin == token |
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221 Node[] endNodes; /// endNodes[n].end == token |
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222 } |
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223 |
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224 /// Builds an array of TokenEx items. |
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225 class TokenExBuilder : DefaultVisitor |
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226 { |
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227 private TokenEx*[Token*] tokenTable; |
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228 |
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229 TokenEx[] build(Node root, Token* first) |
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230 { |
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231 auto token = first; |
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232 |
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233 uint count; // Count tokens. |
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234 for (; token; token = token.next) |
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235 count++; |
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236 // Creat the exact number of TokenEx instances. |
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237 auto toks = new TokenEx[count]; |
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238 token = first; |
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239 foreach (ref tokEx; toks) |
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240 { |
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241 tokEx.token = token; |
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242 if (!token.isWhitespace) |
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243 tokenTable[token] = &tokEx; |
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244 token = token.next; |
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245 } |
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246 |
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247 super.visitN(root); |
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248 tokenTable = null; |
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249 return toks; |
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250 } |
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251 |
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252 TokenEx* getTokenEx()(Token* t) |
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253 { |
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254 auto p = t in tokenTable; |
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255 assert(p, t.srcText~" is not in tokenTable"); |
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256 return *p; |
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257 } |
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258 |
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259 // Override dispatch function. |
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260 override Node dispatch(Node n) |
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261 { |
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262 auto begin = n.begin; |
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263 if (begin) |
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264 { assert(n.end); |
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265 auto txbegin = getTokenEx(begin); |
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266 auto txend = getTokenEx(n.end); |
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267 txbegin.beginNodes ~= n; |
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268 txend.endNodes ~= n; |
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269 } |
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270 return super.dispatch(n); |
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271 } |
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272 } |
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273 |
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274 void printErrors(Lexer lx, TagMap tags, Print!(char) print) |
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275 { |
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276 foreach (e; lx.errors) |
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277 print.format(tags["LexerError"], e.filePath, e.loc, e.col, xml_escape(e.getMsg)); |
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278 } |
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279 |
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280 void printErrors(Parser parser, TagMap tags, Print!(char) print) |
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281 { |
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282 foreach (e; parser.errors) |
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283 print.format(tags["ParserError"], e.filePath, e.loc, e.col, xml_escape(e.getMsg)); |
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284 } |
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285 |
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286 void printLines(uint lines, TagMap tags, Print!(char) print) |
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287 { |
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288 auto lineNumberFormat = tags["LineNumber"]; |
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289 for (auto lineNum = 1; lineNum <= lines; lineNum++) |
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290 print.format(lineNumberFormat, lineNum); |
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291 } |
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292 |
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293 /// Highlights the syntax in a source file. |
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294 void highlightSyntax(string filePath, TagMap tags, |
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295 Print!(char) print, |
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296 HighlightCommand.Options options) |
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297 { |
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298 auto parser = new Parser(new SourceText(filePath, true)); |
368 | 299 auto root = parser.start(); |
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300 auto lx = parser.lexer; |
363 | 301 |
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302 auto builder = new TokenExBuilder(); |
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303 auto tokenExList = builder.build(root, lx.firstToken()); |
363 | 304 |
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305 print(tags["DocHead"]); |
363 | 306 if (lx.errors.length || parser.errors.length) |
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307 { // Output error messages. |
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308 print(tags["CompBegin"]); |
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309 printErrors(lx, tags, print); |
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310 printErrors(parser, tags, print); |
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311 print(tags["CompEnd"]); |
363 | 312 } |
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313 |
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314 if (options & HighlightCommand.Option.PrintLines) |
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315 { |
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316 print(tags["LineNumberBegin"]); |
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317 printLines(lx.lineNum, tags, print); |
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318 print(tags["LineNumberEnd"]); |
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319 } |
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320 |
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321 print(tags["SourceBegin"]); |
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322 |
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323 auto tagNodeBegin = tags["NodeBegin"]; |
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324 auto tagNodeEnd = tags["NodeEnd"]; |
363 | 325 |
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326 // Iterate over list of tokens. |
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327 foreach (ref tokenEx; tokenExList) |
363 | 328 { |
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329 auto token = tokenEx.token; |
363 | 330 |
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331 token.ws && print(token.wsChars); // Print preceding whitespace. |
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332 if (token.isWhitespace) { |
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333 printToken(token, tags, print); |
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334 continue; |
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335 } |
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336 // <node> |
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337 foreach (node; tokenEx.beginNodes) |
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338 print.format(tagNodeBegin, tags.getTag(node.category), getShortClassName(node)); |
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339 // Token text. |
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340 printToken(token, tags, print); |
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341 // </node> |
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342 if (options & HighlightCommand.Option.HTML) |
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343 foreach_reverse (node; tokenEx.endNodes) |
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344 print(tagNodeEnd); |
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345 else |
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346 foreach_reverse (node; tokenEx.endNodes) |
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347 print.format(tagNodeEnd, tags.getTag(node.category)); |
363 | 348 } |
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349 print(tags["SourceEnd"]); |
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350 print(tags["DocEnd"]); |
363 | 351 } |
352 | |
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353 /// Highlights all tokens of a source file. |
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354 void highlightTokens(string filePath, TagMap tags, |
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355 Print!(char) print, |
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356 HighlightCommand.Options options) |
363 | 357 { |
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358 auto lx = new Lexer(new SourceText(filePath, true)); |
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359 lx.scanAll(); |
363 | 360 |
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361 print(tags["DocHead"]); |
363 | 362 if (lx.errors.length) |
363 { | |
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364 print(tags["CompBegin"]); |
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365 printErrors(lx, tags, print); |
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366 print(tags["CompEnd"]); |
363 | 367 } |
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368 |
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369 if (options & HighlightCommand.Option.PrintLines) |
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370 { |
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371 print(tags["LineNumberBegin"]); |
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372 printLines(lx.lineNum, tags, print); |
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373 print(tags["LineNumberEnd"]); |
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374 } |
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375 |
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376 print(tags["SourceBegin"]); |
363 | 377 // Traverse linked list and print tokens. |
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378 for (auto token = lx.firstToken(); token; token = token.next) { |
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379 token.ws && print(token.wsChars); // Print preceding whitespace. |
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380 printToken(token, tags, print); |
363 | 381 } |
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382 print(tags["SourceEnd"]); |
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383 print(tags["DocEnd"]); |
363 | 384 } |
385 | |
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386 /// A token highlighter designed for DDoc. |
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387 class TokenHighlighter |
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388 { |
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389 TagMap tags; |
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390 this(InfoManager infoMan, bool useHTML = true) |
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391 { |
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392 string filePath = GlobalSettings.htmlMapFile; |
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393 if (!useHTML) |
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394 filePath = GlobalSettings.xmlMapFile; |
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395 auto map = TagMapLoader(infoMan).load(filePath); |
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396 tags = new TagMap(map); |
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397 } |
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398 |
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399 /// Highlights tokens in a DDoc code section. |
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400 /// Returns: a string with the highlighted tokens (in HTML tags.) |
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401 string highlight(string text, string filePath) |
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402 { |
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403 auto buffer = new GrowBuffer(text.length); |
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404 auto print = new Print!(char)(Format, buffer); |
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405 |
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406 auto lx = new Lexer(new SourceText(filePath, text)); |
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407 lx.scanAll(); |
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408 |
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409 // Traverse linked list and print tokens. |
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410 print("$(D_CODE\n"); |
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411 if (lx.errors.length) |
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412 { // Output error messages. |
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413 print(tags["CompBegin"]); |
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414 printErrors(lx, tags, print); |
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415 print(tags["CompEnd"]); |
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416 } |
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417 // Traverse linked list and print tokens. |
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418 for (auto token = lx.firstToken(); token; token = token.next) { |
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419 token.ws && print(token.wsChars); // Print preceding whitespace. |
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420 printToken(token, tags, print); |
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421 } |
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422 print("\n)"); |
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423 return cast(char[])buffer.slice(); |
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424 } |
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425 } |
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426 |
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427 /// Prints a token to the stream print. |
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428 void printToken(Token* token, TagMap tags, Print!(char) print) |
363 | 429 { |
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430 switch(token.kind) |
363 | 431 { |
432 case TOK.Identifier: | |
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433 print.format(tags.Identifier, token.srcText); |
363 | 434 break; |
435 case TOK.Comment: | |
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436 string formatStr; |
363 | 437 switch (token.start[1]) |
438 { | |
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439 case '/': formatStr = tags.LineC; break; |
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440 case '*': formatStr = tags.BlockC; break; |
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441 case '+': formatStr = tags.NestedC; break; |
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442 default: assert(0); |
363 | 443 } |
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444 print.format(formatStr, xml_escape(token.srcText)); |
363 | 445 break; |
446 case TOK.String: | |
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447 print.format(tags.String, xml_escape(token.srcText)); |
363 | 448 break; |
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449 case TOK.CharLiteral: |
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450 print.format(tags.Char, xml_escape(token.srcText)); |
363 | 451 break; |
452 case TOK.Int32, TOK.Int64, TOK.Uint32, TOK.Uint64, | |
453 TOK.Float32, TOK.Float64, TOK.Float80, | |
454 TOK.Imaginary32, TOK.Imaginary64, TOK.Imaginary80: | |
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455 print.format(tags.Number, token.srcText); |
363 | 456 break; |
457 case TOK.Shebang: | |
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458 print.format(tags.Shebang, xml_escape(token.srcText)); |
363 | 459 break; |
460 case TOK.HashLine: | |
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461 auto formatStr = tags.HLine; |
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462 // The text to be inserted into formatStr. |
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463 auto buffer = new GrowBuffer; |
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464 auto print2 = new Print!(char)(Format, buffer); |
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465 |
363 | 466 void printWS(char* start, char* end) |
467 { | |
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468 start != end && print2(start[0 .. end - start]); |
363 | 469 } |
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470 |
485
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471 auto num = token.tokLineNum; |
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472 if (num is null) |
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473 { // Malformed #line |
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474 print.format(formatStr, token.srcText); |
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475 break; |
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476 } |
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477 |
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478 // Print whitespace between #line and number. |
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479 printWS(token.start, num.start); // Prints "#line" as well. |
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480 printToken(num, tags, print2); // Print the number. |
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481 |
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482 if (auto filespec = token.tokLineFilespec) |
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483 { // Print whitespace between number and filespec. |
363 | 484 printWS(num.end, filespec.start); |
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485 print2.format(tags.Filespec, xml_escape(filespec.srcText)); |
363 | 486 } |
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487 // Finally print the whole token. |
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488 print.format(formatStr, cast(char[])buffer.slice()); |
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489 break; |
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490 case TOK.Illegal: |
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491 print.format(tags.Illegal, token.srcText()); |
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492 break; |
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493 case TOK.Newline: |
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494 print.format(tags.Newline, token.srcText()); |
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495 break; |
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496 case TOK.EOF: |
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497 print(tags.EOF); |
363 | 498 break; |
499 default: | |
500 if (token.isKeyword()) | |
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501 print.format(tags.Keyword, token.srcText); |
363 | 502 else if (token.isSpecialToken) |
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503 print.format(tags.SpecialToken, token.srcText); |
363 | 504 else |
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505 print(tags[token.kind]); |
363 | 506 } |
507 } |