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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 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 CodeMirror.defineMode("go", function(config) {
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15 var indentUnit = config.indentUnit;
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16
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17 var keywords = {
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18 "break":true, "case":true, "chan":true, "const":true, "continue":true,
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19 "default":true, "defer":true, "else":true, "fallthrough":true, "for":true,
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20 "func":true, "go":true, "goto":true, "if":true, "import":true,
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21 "interface":true, "map":true, "package":true, "range":true, "return":true,
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22 "select":true, "struct":true, "switch":true, "type":true, "var":true,
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23 "bool":true, "byte":true, "complex64":true, "complex128":true,
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24 "float32":true, "float64":true, "int8":true, "int16":true, "int32":true,
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25 "int64":true, "string":true, "uint8":true, "uint16":true, "uint32":true,
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26 "uint64":true, "int":true, "uint":true, "uintptr":true, "error": true,
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27 "rune":true, "any":true, "comparable":true
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28 };
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29
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30 var atoms = {
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31 "true":true, "false":true, "iota":true, "nil":true, "append":true,
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32 "cap":true, "close":true, "complex":true, "copy":true, "delete":true, "imag":true,
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33 "len":true, "make":true, "new":true, "panic":true, "print":true,
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34 "println":true, "real":true, "recover":true
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35 };
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36
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37 var isOperatorChar = /[+\-*&^%:=<>!|\/]/;
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38
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39 var curPunc;
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40
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41 function tokenBase(stream, state) {
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42 var ch = stream.next();
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43 if (ch == '"' || ch == "'" || ch == "`") {
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44 state.tokenize = tokenString(ch);
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45 return state.tokenize(stream, state);
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46 }
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47 if (/[\d\.]/.test(ch)) {
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48 if (ch == ".") {
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49 stream.match(/^[0-9_]+([eE][\-+]?[0-9_]+)?/);
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50 } else if (ch == "0") {
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51 stream.match(/^[xX][0-9a-fA-F_]+/) || stream.match(/^[0-7_]+/);
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52 } else {
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53 stream.match(/^[0-9_]*\.?[0-9_]*([eE][\-+]?[0-9_]+)?/);
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54 }
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55 return "number";
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56 }
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57 if (/[\[\]{}\(\),;\:\.]/.test(ch)) {
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58 curPunc = ch;
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59 return null;
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60 }
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61 if (ch == "/") {
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62 if (stream.eat("*")) {
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63 state.tokenize = tokenComment;
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64 return tokenComment(stream, state);
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65 }
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66 if (stream.eat("/")) {
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67 stream.skipToEnd();
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68 return "comment";
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69 }
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70 }
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71 if (isOperatorChar.test(ch)) {
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72 stream.eatWhile(isOperatorChar);
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73 return "operator";
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74 }
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75 stream.eatWhile(/[\w\$_\xa1-\uffff]/);
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76 var cur = stream.current();
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77 if (keywords.propertyIsEnumerable(cur)) {
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78 if (cur == "case" || cur == "default") curPunc = "case";
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79 return "keyword";
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80 }
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81 if (atoms.propertyIsEnumerable(cur)) return "atom";
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82 return "variable";
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83 }
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84
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85 function tokenString(quote) {
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86 return function(stream, state) {
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87 var escaped = false, next, end = false;
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88 while ((next = stream.next()) != null) {
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89 if (next == quote && !escaped) {end = true; break;}
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90 escaped = !escaped && quote != "`" && next == "\\";
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91 }
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92 if (end || !(escaped || quote == "`"))
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93 state.tokenize = tokenBase;
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94 return "string";
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95 };
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96 }
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97
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98 function tokenComment(stream, state) {
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99 var maybeEnd = false, ch;
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100 while (ch = stream.next()) {
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101 if (ch == "/" && maybeEnd) {
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102 state.tokenize = tokenBase;
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103 break;
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104 }
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105 maybeEnd = (ch == "*");
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106 }
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107 return "comment";
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108 }
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109
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110 function Context(indented, column, type, align, prev) {
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111 this.indented = indented;
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112 this.column = column;
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113 this.type = type;
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114 this.align = align;
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115 this.prev = prev;
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116 }
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117 function pushContext(state, col, type) {
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118 return state.context = new Context(state.indented, col, type, null, state.context);
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119 }
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120 function popContext(state) {
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121 if (!state.context.prev) return;
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122 var t = state.context.type;
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123 if (t == ")" || t == "]" || t == "}")
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124 state.indented = state.context.indented;
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125 return state.context = state.context.prev;
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126 }
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127
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128 // Interface
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129
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130 return {
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131 startState: function(basecolumn) {
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132 return {
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133 tokenize: null,
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134 context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
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135 indented: 0,
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136 startOfLine: true
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137 };
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138 },
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139
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140 token: function(stream, state) {
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141 var ctx = state.context;
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142 if (stream.sol()) {
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143 if (ctx.align == null) ctx.align = false;
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144 state.indented = stream.indentation();
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145 state.startOfLine = true;
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146 if (ctx.type == "case") ctx.type = "}";
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147 }
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148 if (stream.eatSpace()) return null;
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149 curPunc = null;
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150 var style = (state.tokenize || tokenBase)(stream, state);
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151 if (style == "comment") return style;
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152 if (ctx.align == null) ctx.align = true;
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153
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154 if (curPunc == "{") pushContext(state, stream.column(), "}");
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155 else if (curPunc == "[") pushContext(state, stream.column(), "]");
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156 else if (curPunc == "(") pushContext(state, stream.column(), ")");
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157 else if (curPunc == "case") ctx.type = "case";
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158 else if (curPunc == "}" && ctx.type == "}") popContext(state);
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159 else if (curPunc == ctx.type) popContext(state);
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160 state.startOfLine = false;
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161 return style;
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162 },
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163
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164 indent: function(state, textAfter) {
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165 if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
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166 var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
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167 if (ctx.type == "case" && /^(?:case|default)\b/.test(textAfter)) {
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168 state.context.type = "}";
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169 return ctx.indented;
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170 }
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171 var closing = firstChar == ctx.type;
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172 if (ctx.align) return ctx.column + (closing ? 0 : 1);
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173 else return ctx.indented + (closing ? 0 : indentUnit);
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174 },
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175
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176 electricChars: "{}):",
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177 closeBrackets: "()[]{}''\"\"``",
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178 fold: "brace",
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179 blockCommentStart: "/*",
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180 blockCommentEnd: "*/",
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181 lineComment: "//"
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182 };
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183 });
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184
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185 CodeMirror.defineMIME("text/x-go", "go");
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186
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187 });
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