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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 // Originally written by Alf Nielsen, re-written by Michael Zhou
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5 (function(mod) {
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6 if (typeof exports == "object" && typeof module == "object") // CommonJS
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7 mod(require("../../lib/codemirror"));
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8 else if (typeof define == "function" && define.amd) // AMD
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9 define(["../../lib/codemirror"], mod);
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10 else // Plain browser env
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11 mod(CodeMirror);
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12 })(function(CodeMirror) {
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13 "use strict";
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14
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15 function words(str) {
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16 var obj = {}, words = str.split(",");
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17 for (var i = 0; i < words.length; ++i) {
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18 var allCaps = words[i].toUpperCase();
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19 var firstCap = words[i].charAt(0).toUpperCase() + words[i].slice(1);
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20 obj[words[i]] = true;
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21 obj[allCaps] = true;
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22 obj[firstCap] = true;
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23 }
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24 return obj;
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25 }
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26
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27 function metaHook(stream) {
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28 stream.eatWhile(/[\w\$_]/);
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29 return "meta";
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30 }
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31
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32 CodeMirror.defineMode("vhdl", function(config, parserConfig) {
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33 var indentUnit = config.indentUnit,
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34 atoms = parserConfig.atoms || words("null"),
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35 hooks = parserConfig.hooks || {"`": metaHook, "$": metaHook},
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36 multiLineStrings = parserConfig.multiLineStrings;
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37
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38 var keywords = words("abs,access,after,alias,all,and,architecture,array,assert,attribute,begin,block," +
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39 "body,buffer,bus,case,component,configuration,constant,disconnect,downto,else,elsif,end,end block,end case," +
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40 "end component,end for,end generate,end if,end loop,end process,end record,end units,entity,exit,file,for," +
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41 "function,generate,generic,generic map,group,guarded,if,impure,in,inertial,inout,is,label,library,linkage," +
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42 "literal,loop,map,mod,nand,new,next,nor,null,of,on,open,or,others,out,package,package body,port,port map," +
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43 "postponed,procedure,process,pure,range,record,register,reject,rem,report,return,rol,ror,select,severity,signal," +
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44 "sla,sll,sra,srl,subtype,then,to,transport,type,unaffected,units,until,use,variable,wait,when,while,with,xnor,xor");
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45
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46 var blockKeywords = words("architecture,entity,begin,case,port,else,elsif,end,for,function,if");
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47
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48 var isOperatorChar = /[&|~><!\)\(*#%@+\/=?\:;}{,\.\^\-\[\]]/;
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49 var curPunc;
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50
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51 function tokenBase(stream, state) {
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52 var ch = stream.next();
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53 if (hooks[ch]) {
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54 var result = hooks[ch](stream, state);
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55 if (result !== false) return result;
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56 }
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57 if (ch == '"') {
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58 state.tokenize = tokenString2(ch);
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59 return state.tokenize(stream, state);
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60 }
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61 if (ch == "'") {
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62 state.tokenize = tokenString(ch);
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63 return state.tokenize(stream, state);
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64 }
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65 if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
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66 curPunc = ch;
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67 return null;
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68 }
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69 if (/[\d']/.test(ch)) {
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70 stream.eatWhile(/[\w\.']/);
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71 return "number";
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72 }
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73 if (ch == "-") {
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74 if (stream.eat("-")) {
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75 stream.skipToEnd();
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76 return "comment";
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77 }
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78 }
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79 if (isOperatorChar.test(ch)) {
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80 stream.eatWhile(isOperatorChar);
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81 return "operator";
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82 }
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83 stream.eatWhile(/[\w\$_]/);
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84 var cur = stream.current();
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85 if (keywords.propertyIsEnumerable(cur.toLowerCase())) {
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86 if (blockKeywords.propertyIsEnumerable(cur)) curPunc = "newstatement";
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87 return "keyword";
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88 }
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89 if (atoms.propertyIsEnumerable(cur)) return "atom";
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90 return "variable";
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91 }
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92
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93 function tokenString(quote) {
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94 return function(stream, state) {
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95 var escaped = false, next, end = false;
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96 while ((next = stream.next()) != null) {
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97 if (next == quote && !escaped) {end = true; break;}
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98 escaped = !escaped && next == "--";
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99 }
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100 if (end || !(escaped || multiLineStrings))
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101 state.tokenize = tokenBase;
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102 return "string";
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103 };
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104 }
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105 function tokenString2(quote) {
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106 return function(stream, state) {
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107 var escaped = false, next, end = false;
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108 while ((next = stream.next()) != null) {
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109 if (next == quote && !escaped) {end = true; break;}
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110 escaped = !escaped && next == "--";
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111 }
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112 if (end || !(escaped || multiLineStrings))
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113 state.tokenize = tokenBase;
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114 return "string-2";
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115 };
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116 }
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117
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118 function Context(indented, column, type, align, prev) {
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119 this.indented = indented;
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120 this.column = column;
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121 this.type = type;
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122 this.align = align;
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123 this.prev = prev;
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124 }
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125 function pushContext(state, col, type) {
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126 return state.context = new Context(state.indented, col, type, null, state.context);
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127 }
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128 function popContext(state) {
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129 var t = state.context.type;
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130 if (t == ")" || t == "]" || t == "}")
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131 state.indented = state.context.indented;
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132 return state.context = state.context.prev;
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133 }
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134
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135 // Interface
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136 return {
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137 startState: function(basecolumn) {
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138 return {
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139 tokenize: null,
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140 context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
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141 indented: 0,
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142 startOfLine: true
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143 };
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144 },
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145
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146 token: function(stream, state) {
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147 var ctx = state.context;
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148 if (stream.sol()) {
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149 if (ctx.align == null) ctx.align = false;
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150 state.indented = stream.indentation();
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151 state.startOfLine = true;
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152 }
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153 if (stream.eatSpace()) return null;
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154 curPunc = null;
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155 var style = (state.tokenize || tokenBase)(stream, state);
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156 if (style == "comment" || style == "meta") return style;
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157 if (ctx.align == null) ctx.align = true;
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158
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159 if ((curPunc == ";" || curPunc == ":") && ctx.type == "statement") popContext(state);
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160 else if (curPunc == "{") pushContext(state, stream.column(), "}");
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161 else if (curPunc == "[") pushContext(state, stream.column(), "]");
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162 else if (curPunc == "(") pushContext(state, stream.column(), ")");
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163 else if (curPunc == "}") {
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164 while (ctx.type == "statement") ctx = popContext(state);
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165 if (ctx.type == "}") ctx = popContext(state);
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166 while (ctx.type == "statement") ctx = popContext(state);
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167 }
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168 else if (curPunc == ctx.type) popContext(state);
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169 else if (ctx.type == "}" || ctx.type == "top" || (ctx.type == "statement" && curPunc == "newstatement"))
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170 pushContext(state, stream.column(), "statement");
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171 state.startOfLine = false;
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172 return style;
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173 },
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174
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175 indent: function(state, textAfter) {
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176 if (state.tokenize != tokenBase && state.tokenize != null) return 0;
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177 var firstChar = textAfter && textAfter.charAt(0), ctx = state.context, closing = firstChar == ctx.type;
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178 if (ctx.type == "statement") return ctx.indented + (firstChar == "{" ? 0 : indentUnit);
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179 else if (ctx.align) return ctx.column + (closing ? 0 : 1);
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180 else return ctx.indented + (closing ? 0 : indentUnit);
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181 },
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182
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183 electricChars: "{}"
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184 };
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185 });
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186
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187 CodeMirror.defineMIME("text/x-vhdl", "vhdl");
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188
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189 });
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