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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 function wordObj(words) {
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15 var o = {};
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16 for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true;
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17 return o;
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18 }
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19
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20 var keywordList = [
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21 "alias", "and", "BEGIN", "begin", "break", "case", "class", "def", "defined?", "do", "else",
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22 "elsif", "END", "end", "ensure", "false", "for", "if", "in", "module", "next", "not", "or",
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23 "redo", "rescue", "retry", "return", "self", "super", "then", "true", "undef", "unless",
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24 "until", "when", "while", "yield", "nil", "raise", "throw", "catch", "fail", "loop", "callcc",
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25 "caller", "lambda", "proc", "public", "protected", "private", "require", "load",
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26 "require_relative", "extend", "autoload", "__END__", "__FILE__", "__LINE__", "__dir__"
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27 ], keywords = wordObj(keywordList);
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28
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29 var indentWords = wordObj(["def", "class", "case", "for", "while", "until", "module",
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30 "catch", "loop", "proc", "begin"]);
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31 var dedentWords = wordObj(["end", "until"]);
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32 var opening = {"[": "]", "{": "}", "(": ")"};
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33 var closing = {"]": "[", "}": "{", ")": "("};
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34
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35 CodeMirror.defineMode("ruby", function(config) {
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36 var curPunc;
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37
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38 function chain(newtok, stream, state) {
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39 state.tokenize.push(newtok);
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40 return newtok(stream, state);
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41 }
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42
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43 function tokenBase(stream, state) {
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44 if (stream.sol() && stream.match("=begin") && stream.eol()) {
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45 state.tokenize.push(readBlockComment);
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46 return "comment";
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47 }
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48 if (stream.eatSpace()) return null;
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49 var ch = stream.next(), m;
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50 if (ch == "`" || ch == "'" || ch == '"') {
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51 return chain(readQuoted(ch, "string", ch == '"' || ch == "`"), stream, state);
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52 } else if (ch == "/") {
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53 if (regexpAhead(stream))
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54 return chain(readQuoted(ch, "string-2", true), stream, state);
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55 else
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56 return "operator";
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57 } else if (ch == "%") {
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58 var style = "string", embed = true;
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59 if (stream.eat("s")) style = "atom";
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60 else if (stream.eat(/[WQ]/)) style = "string";
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61 else if (stream.eat(/[r]/)) style = "string-2";
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62 else if (stream.eat(/[wxq]/)) { style = "string"; embed = false; }
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63 var delim = stream.eat(/[^\w\s=]/);
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64 if (!delim) return "operator";
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65 if (opening.propertyIsEnumerable(delim)) delim = opening[delim];
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66 return chain(readQuoted(delim, style, embed, true), stream, state);
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67 } else if (ch == "#") {
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68 stream.skipToEnd();
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69 return "comment";
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70 } else if (ch == "<" && (m = stream.match(/^<([-~])[\`\"\']?([a-zA-Z_?]\w*)[\`\"\']?(?:;|$)/))) {
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71 return chain(readHereDoc(m[2], m[1]), stream, state);
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72 } else if (ch == "0") {
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73 if (stream.eat("x")) stream.eatWhile(/[\da-fA-F]/);
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74 else if (stream.eat("b")) stream.eatWhile(/[01]/);
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75 else stream.eatWhile(/[0-7]/);
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76 return "number";
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77 } else if (/\d/.test(ch)) {
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78 stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+\-]?[\d_]+)?/);
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79 return "number";
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80 } else if (ch == "?") {
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81 while (stream.match(/^\\[CM]-/)) {}
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82 if (stream.eat("\\")) stream.eatWhile(/\w/);
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83 else stream.next();
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84 return "string";
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85 } else if (ch == ":") {
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86 if (stream.eat("'")) return chain(readQuoted("'", "atom", false), stream, state);
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87 if (stream.eat('"')) return chain(readQuoted('"', "atom", true), stream, state);
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88
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89 // :> :>> :< :<< are valid symbols
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90 if (stream.eat(/[\<\>]/)) {
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91 stream.eat(/[\<\>]/);
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92 return "atom";
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93 }
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94
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95 // :+ :- :/ :* :| :& :! are valid symbols
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96 if (stream.eat(/[\+\-\*\/\&\|\:\!]/)) {
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97 return "atom";
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98 }
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99
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100 // Symbols can't start by a digit
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101 if (stream.eat(/[a-zA-Z$@_\xa1-\uffff]/)) {
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102 stream.eatWhile(/[\w$\xa1-\uffff]/);
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103 // Only one ? ! = is allowed and only as the last character
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104 stream.eat(/[\?\!\=]/);
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105 return "atom";
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106 }
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107 return "operator";
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108 } else if (ch == "@" && stream.match(/^@?[a-zA-Z_\xa1-\uffff]/)) {
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109 stream.eat("@");
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110 stream.eatWhile(/[\w\xa1-\uffff]/);
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111 return "variable-2";
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112 } else if (ch == "$") {
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113 if (stream.eat(/[a-zA-Z_]/)) {
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114 stream.eatWhile(/[\w]/);
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115 } else if (stream.eat(/\d/)) {
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116 stream.eat(/\d/);
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117 } else {
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118 stream.next(); // Must be a special global like $: or $!
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119 }
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120 return "variable-3";
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121 } else if (/[a-zA-Z_\xa1-\uffff]/.test(ch)) {
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122 stream.eatWhile(/[\w\xa1-\uffff]/);
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123 stream.eat(/[\?\!]/);
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124 if (stream.eat(":")) return "atom";
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125 return "ident";
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126 } else if (ch == "|" && (state.varList || state.lastTok == "{" || state.lastTok == "do")) {
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127 curPunc = "|";
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128 return null;
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129 } else if (/[\(\)\[\]{}\\;]/.test(ch)) {
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130 curPunc = ch;
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131 return null;
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132 } else if (ch == "-" && stream.eat(">")) {
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133 return "arrow";
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134 } else if (/[=+\-\/*:\.^%<>~|]/.test(ch)) {
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135 var more = stream.eatWhile(/[=+\-\/*:\.^%<>~|]/);
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136 if (ch == "." && !more) curPunc = ".";
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137 return "operator";
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138 } else {
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139 return null;
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140 }
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141 }
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142
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143 function regexpAhead(stream) {
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144 var start = stream.pos, depth = 0, next, found = false, escaped = false
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145 while ((next = stream.next()) != null) {
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146 if (!escaped) {
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147 if ("[{(".indexOf(next) > -1) {
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148 depth++
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149 } else if ("]})".indexOf(next) > -1) {
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150 depth--
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151 if (depth < 0) break
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152 } else if (next == "/" && depth == 0) {
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153 found = true
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154 break
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155 }
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156 escaped = next == "\\"
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157 } else {
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158 escaped = false
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159 }
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160 }
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161 stream.backUp(stream.pos - start)
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162 return found
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163 }
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164
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165 function tokenBaseUntilBrace(depth) {
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166 if (!depth) depth = 1;
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167 return function(stream, state) {
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168 if (stream.peek() == "}") {
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169 if (depth == 1) {
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170 state.tokenize.pop();
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171 return state.tokenize[state.tokenize.length-1](stream, state);
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172 } else {
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173 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth - 1);
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174 }
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175 } else if (stream.peek() == "{") {
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176 state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth + 1);
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177 }
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178 return tokenBase(stream, state);
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179 };
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180 }
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181 function tokenBaseOnce() {
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182 var alreadyCalled = false;
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183 return function(stream, state) {
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184 if (alreadyCalled) {
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185 state.tokenize.pop();
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186 return state.tokenize[state.tokenize.length-1](stream, state);
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187 }
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188 alreadyCalled = true;
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189 return tokenBase(stream, state);
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190 };
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191 }
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192 function readQuoted(quote, style, embed, unescaped) {
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193 return function(stream, state) {
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194 var escaped = false, ch;
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195
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196 if (state.context.type === 'read-quoted-paused') {
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197 state.context = state.context.prev;
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198 stream.eat("}");
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199 }
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200
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201 while ((ch = stream.next()) != null) {
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202 if (ch == quote && (unescaped || !escaped)) {
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203 state.tokenize.pop();
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204 break;
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205 }
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206 if (embed && ch == "#" && !escaped) {
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207 if (stream.eat("{")) {
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208 if (quote == "}") {
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209 state.context = {prev: state.context, type: 'read-quoted-paused'};
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210 }
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211 state.tokenize.push(tokenBaseUntilBrace());
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212 break;
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213 } else if (/[@\$]/.test(stream.peek())) {
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214 state.tokenize.push(tokenBaseOnce());
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215 break;
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216 }
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217 }
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218 escaped = !escaped && ch == "\\";
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219 }
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220 return style;
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221 };
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222 }
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223 function readHereDoc(phrase, mayIndent) {
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224 return function(stream, state) {
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225 if (mayIndent) stream.eatSpace()
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226 if (stream.match(phrase)) state.tokenize.pop();
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227 else stream.skipToEnd();
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228 return "string";
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229 };
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230 }
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231 function readBlockComment(stream, state) {
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232 if (stream.sol() && stream.match("=end") && stream.eol())
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233 state.tokenize.pop();
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234 stream.skipToEnd();
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235 return "comment";
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236 }
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237
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238 return {
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239 startState: function() {
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240 return {tokenize: [tokenBase],
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241 indented: 0,
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242 context: {type: "top", indented: -config.indentUnit},
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243 continuedLine: false,
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244 lastTok: null,
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245 varList: false};
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246 },
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247
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248 token: function(stream, state) {
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249 curPunc = null;
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250 if (stream.sol()) state.indented = stream.indentation();
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251 var style = state.tokenize[state.tokenize.length-1](stream, state), kwtype;
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252 var thisTok = curPunc;
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253 if (style == "ident") {
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254 var word = stream.current();
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255 style = state.lastTok == "." ? "property"
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256 : keywords.propertyIsEnumerable(stream.current()) ? "keyword"
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257 : /^[A-Z]/.test(word) ? "tag"
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258 : (state.lastTok == "def" || state.lastTok == "class" || state.varList) ? "def"
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259 : "variable";
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260 if (style == "keyword") {
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261 thisTok = word;
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262 if (indentWords.propertyIsEnumerable(word)) kwtype = "indent";
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263 else if (dedentWords.propertyIsEnumerable(word)) kwtype = "dedent";
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264 else if ((word == "if" || word == "unless") && stream.column() == stream.indentation())
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265 kwtype = "indent";
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266 else if (word == "do" && state.context.indented < state.indented)
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267 kwtype = "indent";
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268 }
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269 }
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270 if (curPunc || (style && style != "comment")) state.lastTok = thisTok;
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271 if (curPunc == "|") state.varList = !state.varList;
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272
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273 if (kwtype == "indent" || /[\(\[\{]/.test(curPunc))
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274 state.context = {prev: state.context, type: curPunc || style, indented: state.indented};
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275 else if ((kwtype == "dedent" || /[\)\]\}]/.test(curPunc)) && state.context.prev)
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276 state.context = state.context.prev;
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277
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278 if (stream.eol())
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279 state.continuedLine = (curPunc == "\\" || style == "operator");
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280 return style;
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281 },
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282
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283 indent: function(state, textAfter) {
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284 if (state.tokenize[state.tokenize.length-1] != tokenBase) return CodeMirror.Pass;
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285 var firstChar = textAfter && textAfter.charAt(0);
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286 var ct = state.context;
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287 var closed = ct.type == closing[firstChar] ||
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288 ct.type == "keyword" && /^(?:end|until|else|elsif|when|rescue)\b/.test(textAfter);
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289 return ct.indented + (closed ? 0 : config.indentUnit) +
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290 (state.continuedLine ? config.indentUnit : 0);
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291 },
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292
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293 electricInput: /^\s*(?:end|rescue|elsif|else|\})$/,
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294 lineComment: "#",
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295 fold: "indent"
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296 };
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297 });
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298
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299 CodeMirror.defineMIME("text/x-ruby", "ruby");
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300
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301 CodeMirror.registerHelper("hintWords", "ruby", keywordList);
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302
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303 });
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