GPQAPP

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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  if (typeof exports == "object" && typeof module == "object") // CommonJS
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    mod(require("../../lib/codemirror"));
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  else if (typeof define == "function" && define.amd) // AMD
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    define(["../../lib/codemirror"], mod);
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  else // Plain browser env
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    mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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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 keywordList = [
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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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], keywords = wordObj(keywordList);
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var indentWords = wordObj(["def", "class", "case", "for", "while", "until", "module", "then",
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                           "catch", "loop", "proc", "begin"]);
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var dedentWords = wordObj(["end", "until"]);
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var opening = {"[": "]", "{": "}", "(": ")"};
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var closing = {"]": "[", "}": "{", ")": "("};
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CodeMirror.defineMode("ruby", function(config) {
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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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    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 == "/") {
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      if (regexpAhead(stream))
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        return chain(readQuoted(ch, "string-2", true), stream, state);
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      else
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        return "operator";
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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 (opening.propertyIsEnumerable(delim)) delim = opening[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[2], 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$@_\xa1-\uffff]/)) {
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        stream.eatWhile(/[\w$\xa1-\uffff]/);
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        // Only one ? ! = is allowed and only as the last character
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        stream.eat(/[\?\!\=]/);
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        return "atom";
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      }
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      return "operator";
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    } else if (ch == "@" && stream.match(/^@?[a-zA-Z_\xa1-\uffff]/)) {
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      stream.eat("@");
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      stream.eatWhile(/[\w\xa1-\uffff]/);
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      return "variable-2";
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    } else if (ch == "$") {
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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_\xa1-\uffff]/.test(ch)) {
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      stream.eatWhile(/[\w\xa1-\uffff]/);
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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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      var more = stream.eatWhile(/[=+\-\/*:\.^%<>~|]/);
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      if (ch == "." && !more) curPunc = ".";
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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 regexpAhead(stream) {
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    var start = stream.pos, depth = 0, next, found = false, escaped = false
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    while ((next = stream.next()) != null) {
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      if (!escaped) {
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        if ("[{(".indexOf(next) > -1) {
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          depth++
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        } else if ("]})".indexOf(next) > -1) {
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          depth--
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          if (depth < 0) break
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        } else if (next == "/" && depth == 0) {
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          found = true
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          break
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        }
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        escaped = next == "\\"
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      } else {
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        escaped = false
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      }
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    }
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    stream.backUp(stream.pos - start)
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    return found
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  }
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  function tokenBaseUntilBrace(depth) {
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    if (!depth) depth = 1;
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    return function(stream, state) {
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      if (stream.peek() == "}") {
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        if (depth == 1) {
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          state.tokenize.pop();
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          return state.tokenize[state.tokenize.length-1](stream, state);
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        } else {
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          state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth - 1);
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        }
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      } else if (stream.peek() == "{") {
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        state.tokenize[state.tokenize.length - 1] = tokenBaseUntilBrace(depth + 1);
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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, mayIndent) {
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    return function(stream, state) {
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      if (mayIndent) stream.eatSpace()
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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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      curPunc = null;
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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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      var thisTok = curPunc;
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      if (style == "ident") {
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        var word = stream.current();
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        style = state.lastTok == "." ? "property"
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          : 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 (style == "keyword") {
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          thisTok = word;
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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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          else if (word == "do" && state.context.indented < state.indented)
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            kwtype = "indent";
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        }
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      }
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      if (curPunc || (style && style != "comment")) state.lastTok = thisTok;
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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 CodeMirror.Pass;
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      var firstChar = textAfter && textAfter.charAt(0);
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      var ct = state.context;
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      var closed = ct.type == closing[firstChar] ||
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        ct.type == "keyword" && /^(?:end|until|else|elsif|when|rescue)\b/.test(textAfter);
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      return ct.indented + (closed ? 0 : config.indentUnit) +
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        (state.continuedLine ? config.indentUnit : 0);
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    },
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    electricInput: /^\s*(?:end|rescue|elsif|else|\})$/,
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    lineComment: "#",
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    fold: "indent"
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  };
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});
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CodeMirror.defineMIME("text/x-ruby", "ruby");
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CodeMirror.registerHelper("hintWords", "ruby", keywordList);
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});
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