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CodeMirror.defineMode("ruby", function(config) {
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function wordObj(words) {
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var o = {};
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for (var i = 0, e = words.length; i < e; ++i) o[words[i]] = true;
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return o;
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}
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var keywords = wordObj([
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"alias", "and", "BEGIN", "begin", "break", "case", "class", "def", "defined?", "do", "else",
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"elsif", "END", "end", "ensure", "false", "for", "if", "in", "module", "next", "not", "or",
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"redo", "rescue", "retry", "return", "self", "super", "then", "true", "undef", "unless",
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"until", "when", "while", "yield", "nil", "raise", "throw", "catch", "fail", "loop", "callcc",
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"caller", "lambda", "proc", "public", "protected", "private", "require", "load",
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"require_relative", "extend", "autoload", "__END__", "__FILE__", "__LINE__", "__dir__"
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]);
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var indentWords = wordObj(["def", "class", "case", "for", "while", "do", "module", "then",
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"catch", "loop", "proc", "begin"]);
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var dedentWords = wordObj(["end", "until"]);
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var matching = {"[": "]", "{": "}", "(": ")"};
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var curPunc;
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function chain(newtok, stream, state) {
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state.tokenize.push(newtok);
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return newtok(stream, state);
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}
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function tokenBase(stream, state) {
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curPunc = null;
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if (stream.sol() && stream.match("=begin") && stream.eol()) {
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state.tokenize.push(readBlockComment);
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return "comment";
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}
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if (stream.eatSpace()) return null;
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var ch = stream.next(), m;
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if (ch == "`" || ch == "'" || ch == '"') {
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return chain(readQuoted(ch, "string", ch == '"' || ch == "`"), stream, state);
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} else if (ch == "/" && !stream.eol() && stream.peek() != " ") {
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return chain(readQuoted(ch, "string-2", true), stream, state);
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} else if (ch == "%") {
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var style = "string", embed = true;
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if (stream.eat("s")) style = "atom";
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else if (stream.eat(/[WQ]/)) style = "string";
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else if (stream.eat(/[r]/)) style = "string-2";
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else if (stream.eat(/[wxq]/)) { style = "string"; embed = false; }
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var delim = stream.eat(/[^\w\s]/);
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if (!delim) return "operator";
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if (matching.propertyIsEnumerable(delim)) delim = matching[delim];
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return chain(readQuoted(delim, style, embed, true), stream, state);
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} else if (ch == "#") {
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stream.skipToEnd();
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return "comment";
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} else if (ch == "<" && (m = stream.match(/^<-?[\`\"\']?([a-zA-Z_?]\w*)[\`\"\']?(?:;|$)/))) {
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return chain(readHereDoc(m[1]), stream, state);
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} else if (ch == "0") {
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if (stream.eat("x")) stream.eatWhile(/[\da-fA-F]/);
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else if (stream.eat("b")) stream.eatWhile(/[01]/);
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else stream.eatWhile(/[0-7]/);
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return "number";
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} else if (/\d/.test(ch)) {
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stream.match(/^[\d_]*(?:\.[\d_]+)?(?:[eE][+\-]?[\d_]+)?/);
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return "number";
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} else if (ch == "?") {
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while (stream.match(/^\\[CM]-/)) {}
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if (stream.eat("\\")) stream.eatWhile(/\w/);
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else stream.next();
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return "string";
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} else if (ch == ":") {
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if (stream.eat("'")) return chain(readQuoted("'", "atom", false), stream, state);
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if (stream.eat('"')) return chain(readQuoted('"', "atom", true), stream, state);
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// :> :>> :< :<< are valid symbols
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if (stream.eat(/[\<\>]/)) {
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stream.eat(/[\<\>]/);
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return "atom";
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}
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// :+ :- :/ :* :| :& :! are valid symbols
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if (stream.eat(/[\+\-\*\/\&\|\:\!]/)) {
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return "atom";
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}
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// Symbols can't start by a digit
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if (stream.eat(/[a-zA-Z$@_]/)) {
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stream.eatWhile(/[\w]/);
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// Only one ? ! = is allowed and only as the last character
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stream.eat(/[\?\!\=]/);
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return "atom";
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}
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return "operator";
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} else if (ch == "@" && stream.match(/^@?[a-zA-Z_]/)) {
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stream.eat("@");
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stream.eatWhile(/[\w]/);
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return "variable-2";
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} else if (ch == "$") {
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if (stream.eat(/[a-zA-Z_]/)) {
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stream.eatWhile(/[\w]/);
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} else if (stream.eat(/\d/)) {
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stream.eat(/\d/);
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} else {
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stream.next(); // Must be a special global like $: or $!
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}
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return "variable-3";
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} else if (/[a-zA-Z_]/.test(ch)) {
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stream.eatWhile(/[\w]/);
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stream.eat(/[\?\!]/);
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if (stream.eat(":")) return "atom";
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return "ident";
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} else if (ch == "|" && (state.varList || state.lastTok == "{" || state.lastTok == "do")) {
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curPunc = "|";
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return null;
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} else if (/[\(\)\[\]{}\\;]/.test(ch)) {
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curPunc = ch;
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return null;
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} else if (ch == "-" && stream.eat(">")) {
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return "arrow";
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} else if (/[=+\-\/*:\.^%<>~|]/.test(ch)) {
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stream.eatWhile(/[=+\-\/*:\.^%<>~|]/);
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return "operator";
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} else {
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return null;
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}
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}
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function tokenBaseUntilBrace() {
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var depth = 1;
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return function(stream, state) {
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if (stream.peek() == "}") {
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depth--;
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if (depth == 0) {
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state.tokenize.pop();
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return state.tokenize[state.tokenize.length-1](stream, state);
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}
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} else if (stream.peek() == "{") {
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depth++;
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}
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return tokenBase(stream, state);
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};
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}
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function tokenBaseOnce() {
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var alreadyCalled = false;
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return function(stream, state) {
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if (alreadyCalled) {
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state.tokenize.pop();
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return state.tokenize[state.tokenize.length-1](stream, state);
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}
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alreadyCalled = true;
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return tokenBase(stream, state);
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};
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}
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function readQuoted(quote, style, embed, unescaped) {
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return function(stream, state) {
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var escaped = false, ch;
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if (state.context.type === 'read-quoted-paused') {
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state.context = state.context.prev;
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stream.eat("}");
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}
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while ((ch = stream.next()) != null) {
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if (ch == quote && (unescaped || !escaped)) {
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state.tokenize.pop();
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break;
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}
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if (embed && ch == "#" && !escaped) {
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if (stream.eat("{")) {
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if (quote == "}") {
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state.context = {prev: state.context, type: 'read-quoted-paused'};
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}
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state.tokenize.push(tokenBaseUntilBrace());
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break;
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} else if (/[@\$]/.test(stream.peek())) {
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state.tokenize.push(tokenBaseOnce());
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break;
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}
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}
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escaped = !escaped && ch == "\\";
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}
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return style;
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};
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}
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function readHereDoc(phrase) {
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return function(stream, state) {
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if (stream.match(phrase)) state.tokenize.pop();
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else stream.skipToEnd();
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return "string";
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};
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}
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function readBlockComment(stream, state) {
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if (stream.sol() && stream.match("=end") && stream.eol())
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state.tokenize.pop();
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stream.skipToEnd();
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return "comment";
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}
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return {
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startState: function() {
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return {tokenize: [tokenBase],
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indented: 0,
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context: {type: "top", indented: -config.indentUnit},
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continuedLine: false,
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lastTok: null,
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varList: false};
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},
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token: function(stream, state) {
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if (stream.sol()) state.indented = stream.indentation();
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var style = state.tokenize[state.tokenize.length-1](stream, state), kwtype;
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if (style == "ident") {
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var word = stream.current();
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style = keywords.propertyIsEnumerable(stream.current()) ? "keyword"
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: /^[A-Z]/.test(word) ? "tag"
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: (state.lastTok == "def" || state.lastTok == "class" || state.varList) ? "def"
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: "variable";
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if (indentWords.propertyIsEnumerable(word)) kwtype = "indent";
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else if (dedentWords.propertyIsEnumerable(word)) kwtype = "dedent";
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else if ((word == "if" || word == "unless") && stream.column() == stream.indentation())
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kwtype = "indent";
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}
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if (curPunc || (style && style != "comment")) state.lastTok = word || curPunc || style;
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if (curPunc == "|") state.varList = !state.varList;
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if (kwtype == "indent" || /[\(\[\{]/.test(curPunc))
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state.context = {prev: state.context, type: curPunc || style, indented: state.indented};
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else if ((kwtype == "dedent" || /[\)\]\}]/.test(curPunc)) && state.context.prev)
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state.context = state.context.prev;
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if (stream.eol())
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state.continuedLine = (curPunc == "\\" || style == "operator");
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return style;
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},
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indent: function(state, textAfter) {
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if (state.tokenize[state.tokenize.length-1] != tokenBase) return 0;
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var firstChar = textAfter && textAfter.charAt(0);
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var ct = state.context;
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var closing = ct.type == matching[firstChar] ||
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ct.type == "keyword" && /^(?:end|until|else|elsif|when|rescue)\b/.test(textAfter);
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return ct.indented + (closing ? 0 : config.indentUnit) +
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(state.continuedLine ? config.indentUnit : 0);
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},
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electricChars: "}de", // enD and rescuE
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lineComment: "#"
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};
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});
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CodeMirror.defineMIME("text/x-ruby", "ruby");
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