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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("crystal", function(config) {
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15 function wordRegExp(words, end) {
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16 return new RegExp((end ? "" : "^") + "(?:" + words.join("|") + ")" + (end ? "$" : "\\b"));
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17 }
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18
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19 function chain(tokenize, stream, state) {
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20 state.tokenize.push(tokenize);
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21 return tokenize(stream, state);
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22 }
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23
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24 var operators = /^(?:[-+/%|&^]|\*\*?|[<>]{2})/;
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25 var conditionalOperators = /^(?:[=!]~|===|<=>|[<>=!]=?|[|&]{2}|~)/;
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26 var indexingOperators = /^(?:\[\][?=]?)/;
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27 var anotherOperators = /^(?:\.(?:\.{2})?|->|[?:])/;
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28 var idents = /^[a-z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
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29 var types = /^[A-Z_\u009F-\uFFFF][a-zA-Z0-9_\u009F-\uFFFF]*/;
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30 var keywords = wordRegExp([
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31 "abstract", "alias", "as", "asm", "begin", "break", "case", "class", "def", "do",
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32 "else", "elsif", "end", "ensure", "enum", "extend", "for", "fun", "if",
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33 "include", "instance_sizeof", "lib", "macro", "module", "next", "of", "out", "pointerof",
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34 "private", "protected", "rescue", "return", "require", "select", "sizeof", "struct",
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35 "super", "then", "type", "typeof", "uninitialized", "union", "unless", "until", "when", "while", "with",
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36 "yield", "__DIR__", "__END_LINE__", "__FILE__", "__LINE__"
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37 ]);
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38 var atomWords = wordRegExp(["true", "false", "nil", "self"]);
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39 var indentKeywordsArray = [
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40 "def", "fun", "macro",
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41 "class", "module", "struct", "lib", "enum", "union",
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42 "do", "for"
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43 ];
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44 var indentKeywords = wordRegExp(indentKeywordsArray);
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45 var indentExpressionKeywordsArray = ["if", "unless", "case", "while", "until", "begin", "then"];
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46 var indentExpressionKeywords = wordRegExp(indentExpressionKeywordsArray);
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47 var dedentKeywordsArray = ["end", "else", "elsif", "rescue", "ensure"];
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48 var dedentKeywords = wordRegExp(dedentKeywordsArray);
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49 var dedentPunctualsArray = ["\\)", "\\}", "\\]"];
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50 var dedentPunctuals = new RegExp("^(?:" + dedentPunctualsArray.join("|") + ")$");
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51 var nextTokenizer = {
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52 "def": tokenFollowIdent, "fun": tokenFollowIdent, "macro": tokenMacroDef,
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53 "class": tokenFollowType, "module": tokenFollowType, "struct": tokenFollowType,
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54 "lib": tokenFollowType, "enum": tokenFollowType, "union": tokenFollowType
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55 };
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56 var matching = {"[": "]", "{": "}", "(": ")", "<": ">"};
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57
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58 function tokenBase(stream, state) {
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59 if (stream.eatSpace()) {
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60 return null;
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61 }
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62
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63 // Macros
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64 if (state.lastToken != "\\" && stream.match("{%", false)) {
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65 return chain(tokenMacro("%", "%"), stream, state);
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66 }
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67
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68 if (state.lastToken != "\\" && stream.match("{{", false)) {
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69 return chain(tokenMacro("{", "}"), stream, state);
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70 }
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71
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72 // Comments
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73 if (stream.peek() == "#") {
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74 stream.skipToEnd();
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75 return "comment";
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76 }
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77
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78 // Variables and keywords
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79 var matched;
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80 if (stream.match(idents)) {
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81 stream.eat(/[?!]/);
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82
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83 matched = stream.current();
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84 if (stream.eat(":")) {
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85 return "atom";
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86 } else if (state.lastToken == ".") {
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87 return "property";
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88 } else if (keywords.test(matched)) {
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89 if (indentKeywords.test(matched)) {
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90 if (!(matched == "fun" && state.blocks.indexOf("lib") >= 0) && !(matched == "def" && state.lastToken == "abstract")) {
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91 state.blocks.push(matched);
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92 state.currentIndent += 1;
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93 }
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94 } else if ((state.lastStyle == "operator" || !state.lastStyle) && indentExpressionKeywords.test(matched)) {
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95 state.blocks.push(matched);
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96 state.currentIndent += 1;
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97 } else if (matched == "end") {
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98 state.blocks.pop();
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99 state.currentIndent -= 1;
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100 }
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101
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102 if (nextTokenizer.hasOwnProperty(matched)) {
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103 state.tokenize.push(nextTokenizer[matched]);
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104 }
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105
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106 return "keyword";
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107 } else if (atomWords.test(matched)) {
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108 return "atom";
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109 }
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110
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111 return "variable";
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112 }
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113
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114 // Class variables and instance variables
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115 // or attributes
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116 if (stream.eat("@")) {
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117 if (stream.peek() == "[") {
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118 return chain(tokenNest("[", "]", "meta"), stream, state);
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119 }
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120
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121 stream.eat("@");
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122 stream.match(idents) || stream.match(types);
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123 return "variable-2";
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124 }
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125
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126 // Constants and types
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127 if (stream.match(types)) {
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128 return "tag";
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129 }
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130
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131 // Symbols or ':' operator
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132 if (stream.eat(":")) {
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133 if (stream.eat("\"")) {
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134 return chain(tokenQuote("\"", "atom", false), stream, state);
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135 } else if (stream.match(idents) || stream.match(types) ||
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136 stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators)) {
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137 return "atom";
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138 }
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139 stream.eat(":");
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140 return "operator";
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141 }
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142
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143 // Strings
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144 if (stream.eat("\"")) {
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145 return chain(tokenQuote("\"", "string", true), stream, state);
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146 }
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147
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148 // Strings or regexps or macro variables or '%' operator
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149 if (stream.peek() == "%") {
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150 var style = "string";
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151 var embed = true;
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152 var delim;
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153
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154 if (stream.match("%r")) {
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155 // Regexps
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156 style = "string-2";
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157 delim = stream.next();
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158 } else if (stream.match("%w")) {
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159 embed = false;
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160 delim = stream.next();
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161 } else if (stream.match("%q")) {
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162 embed = false;
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163 delim = stream.next();
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164 } else {
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165 if(delim = stream.match(/^%([^\w\s=])/)) {
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166 delim = delim[1];
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167 } else if (stream.match(/^%[a-zA-Z_\u009F-\uFFFF][\w\u009F-\uFFFF]*/)) {
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168 // Macro variables
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169 return "meta";
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170 } else if (stream.eat('%')) {
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171 // '%' operator
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172 return "operator";
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173 }
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174 }
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175
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176 if (matching.hasOwnProperty(delim)) {
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177 delim = matching[delim];
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178 }
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179 return chain(tokenQuote(delim, style, embed), stream, state);
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180 }
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181
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182 // Here Docs
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183 if (matched = stream.match(/^<<-('?)([A-Z]\w*)\1/)) {
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184 return chain(tokenHereDoc(matched[2], !matched[1]), stream, state)
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185 }
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186
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187 // Characters
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188 if (stream.eat("'")) {
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189 stream.match(/^(?:[^']|\\(?:[befnrtv0'"]|[0-7]{3}|u(?:[0-9a-fA-F]{4}|\{[0-9a-fA-F]{1,6}\})))/);
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190 stream.eat("'");
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191 return "atom";
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192 }
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193
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194 // Numbers
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195 if (stream.eat("0")) {
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196 if (stream.eat("x")) {
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197 stream.match(/^[0-9a-fA-F_]+/);
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198 } else if (stream.eat("o")) {
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199 stream.match(/^[0-7_]+/);
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200 } else if (stream.eat("b")) {
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201 stream.match(/^[01_]+/);
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202 }
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203 return "number";
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204 }
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205
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206 if (stream.eat(/^\d/)) {
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207 stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+-]?\d+)?/);
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208 return "number";
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209 }
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210
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211 // Operators
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212 if (stream.match(operators)) {
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213 stream.eat("="); // Operators can follow assign symbol.
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214 return "operator";
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215 }
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216
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217 if (stream.match(conditionalOperators) || stream.match(anotherOperators)) {
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218 return "operator";
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219 }
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220
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221 // Parens and braces
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222 if (matched = stream.match(/[({[]/, false)) {
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223 matched = matched[0];
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224 return chain(tokenNest(matched, matching[matched], null), stream, state);
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225 }
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226
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227 // Escapes
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228 if (stream.eat("\\")) {
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229 stream.next();
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230 return "meta";
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231 }
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232
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233 stream.next();
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234 return null;
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235 }
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236
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237 function tokenNest(begin, end, style, started) {
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238 return function (stream, state) {
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239 if (!started && stream.match(begin)) {
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240 state.tokenize[state.tokenize.length - 1] = tokenNest(begin, end, style, true);
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241 state.currentIndent += 1;
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242 return style;
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243 }
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244
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245 var nextStyle = tokenBase(stream, state);
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246 if (stream.current() === end) {
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247 state.tokenize.pop();
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248 state.currentIndent -= 1;
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249 nextStyle = style;
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250 }
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251
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252 return nextStyle;
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253 };
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254 }
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255
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256 function tokenMacro(begin, end, started) {
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257 return function (stream, state) {
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258 if (!started && stream.match("{" + begin)) {
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259 state.currentIndent += 1;
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260 state.tokenize[state.tokenize.length - 1] = tokenMacro(begin, end, true);
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261 return "meta";
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262 }
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263
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264 if (stream.match(end + "}")) {
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265 state.currentIndent -= 1;
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266 state.tokenize.pop();
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267 return "meta";
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268 }
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269
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270 return tokenBase(stream, state);
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271 };
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272 }
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273
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274 function tokenMacroDef(stream, state) {
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275 if (stream.eatSpace()) {
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276 return null;
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277 }
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278
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279 var matched;
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280 if (matched = stream.match(idents)) {
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281 if (matched == "def") {
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282 return "keyword";
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283 }
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284 stream.eat(/[?!]/);
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285 }
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286
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287 state.tokenize.pop();
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288 return "def";
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289 }
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290
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291 function tokenFollowIdent(stream, state) {
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292 if (stream.eatSpace()) {
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293 return null;
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294 }
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295
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296 if (stream.match(idents)) {
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297 stream.eat(/[!?]/);
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298 } else {
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299 stream.match(operators) || stream.match(conditionalOperators) || stream.match(indexingOperators);
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300 }
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301 state.tokenize.pop();
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302 return "def";
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303 }
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304
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305 function tokenFollowType(stream, state) {
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306 if (stream.eatSpace()) {
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307 return null;
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308 }
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309
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310 stream.match(types);
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311 state.tokenize.pop();
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312 return "def";
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313 }
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314
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315 function tokenQuote(end, style, embed) {
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316 return function (stream, state) {
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317 var escaped = false;
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318
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319 while (stream.peek()) {
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320 if (!escaped) {
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321 if (stream.match("{%", false)) {
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322 state.tokenize.push(tokenMacro("%", "%"));
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323 return style;
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324 }
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325
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326 if (stream.match("{{", false)) {
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327 state.tokenize.push(tokenMacro("{", "}"));
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328 return style;
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329 }
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330
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331 if (embed && stream.match("#{", false)) {
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332 state.tokenize.push(tokenNest("#{", "}", "meta"));
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333 return style;
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334 }
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335
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336 var ch = stream.next();
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337
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338 if (ch == end) {
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339 state.tokenize.pop();
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340 return style;
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341 }
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342
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343 escaped = embed && ch == "\\";
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344 } else {
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345 stream.next();
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346 escaped = false;
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347 }
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348 }
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349
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350 return style;
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351 };
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352 }
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353
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354 function tokenHereDoc(phrase, embed) {
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355 return function (stream, state) {
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356 if (stream.sol()) {
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357 stream.eatSpace()
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358 if (stream.match(phrase)) {
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359 state.tokenize.pop();
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360 return "string";
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361 }
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362 }
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363
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364 var escaped = false;
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365 while (stream.peek()) {
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366 if (!escaped) {
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367 if (stream.match("{%", false)) {
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368 state.tokenize.push(tokenMacro("%", "%"));
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369 return "string";
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370 }
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371
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372 if (stream.match("{{", false)) {
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373 state.tokenize.push(tokenMacro("{", "}"));
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374 return "string";
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375 }
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376
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377 if (embed && stream.match("#{", false)) {
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378 state.tokenize.push(tokenNest("#{", "}", "meta"));
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379 return "string";
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380 }
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381
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382 escaped = stream.next() == "\\" && embed;
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383 } else {
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384 stream.next();
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385 escaped = false;
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386 }
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387 }
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388
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389 return "string";
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390 }
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391 }
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392
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393 return {
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394 startState: function () {
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395 return {
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396 tokenize: [tokenBase],
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397 currentIndent: 0,
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398 lastToken: null,
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399 lastStyle: null,
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400 blocks: []
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401 };
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402 },
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403
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404 token: function (stream, state) {
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405 var style = state.tokenize[state.tokenize.length - 1](stream, state);
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406 var token = stream.current();
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407
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408 if (style && style != "comment") {
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409 state.lastToken = token;
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410 state.lastStyle = style;
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411 }
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412
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413 return style;
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414 },
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415
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416 indent: function (state, textAfter) {
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417 textAfter = textAfter.replace(/^\s*(?:\{%)?\s*|\s*(?:%\})?\s*$/g, "");
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418
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419 if (dedentKeywords.test(textAfter) || dedentPunctuals.test(textAfter)) {
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420 return config.indentUnit * (state.currentIndent - 1);
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421 }
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422
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423 return config.indentUnit * state.currentIndent;
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424 },
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425
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426 fold: "indent",
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427 electricInput: wordRegExp(dedentPunctualsArray.concat(dedentKeywordsArray), true),
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428 lineComment: '#'
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|
|
429 };
|
|
|
430 });
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|
431
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432 CodeMirror.defineMIME("text/x-crystal", "crystal");
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|
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433 });
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