Incs/codemirror/mode/r/r.js

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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/LICENSE

(function(mod) {
  if (typeof exports == "object" && typeof module == "object") // CommonJS
    mod(require("../../lib/codemirror"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
"use strict";

CodeMirror.registerHelper("wordChars", "r", /[\w.]/);

CodeMirror.defineMode("r", function(config) {
  function wordObj(words) {
    var res = {};
    for (var i = 0; i < words.length; ++i) res[words[i]] = true;
    return res;
  }
  var commonAtoms = ["NULL", "NA", "Inf", "NaN", "NA_integer_", "NA_real_", "NA_complex_", "NA_character_", "TRUE", "FALSE"];
  var commonBuiltins = ["list", "quote", "bquote", "eval", "return", "call", "parse", "deparse"];
  var commonKeywords = ["if", "else", "repeat", "while", "function", "for", "in", "next", "break"];
  var commonBlockKeywords = ["if", "else", "repeat", "while", "function", "for"];

  CodeMirror.registerHelper("hintWords", "r", commonAtoms.concat(commonBuiltins, commonKeywords));

  var atoms = wordObj(commonAtoms);
  var builtins = wordObj(commonBuiltins);
  var keywords = wordObj(commonKeywords);
  var blockkeywords = wordObj(commonBlockKeywords);
  var opChars = /[+\-*\/^<>=!&|~$:]/;
  var curPunc;

  function tokenBase(stream, state) {
    curPunc = null;
    var ch = stream.next();
    if (ch == "#") {
      stream.skipToEnd();
      return "comment";
    } else if (ch == "0" && stream.eat("x")) {
      stream.eatWhile(/[\da-f]/i);
      return "number";
    } else if (ch == "." && stream.eat(/\d/)) {
      stream.match(/\d*(?:e[+\-]?\d+)?/);
      return "number";
    } else if (/\d/.test(ch)) {
      stream.match(/\d*(?:\.\d+)?(?:e[+\-]\d+)?L?/);
      return "number";
    } else if (ch == "'" || ch == '"') {
      state.tokenize = tokenString(ch);
      return "string";
    } else if (ch == "`") {
      stream.match(/[^`]+`/);
      return "variable-3";
    } else if (ch == "." && stream.match(/.[.\d]+/)) {
      return "keyword";
    } else if (/[\w\.]/.test(ch) && ch != "_") {
      stream.eatWhile(/[\w\.]/);