Incs/codemirror/mode/elm/elm.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.defineMode("elm", function() {

    function switchState(source, setState, f) {
      setState(f);
      return f(source, setState);
    }

    // These should all be Unicode extended, as per the Haskell 2010 report
    var smallRE = /[a-z_]/;
    var largeRE = /[A-Z]/;
    var digitRE = /[0-9]/;
    var hexitRE = /[0-9A-Fa-f]/;
    var octitRE = /[0-7]/;
    var idRE = /[a-z_A-Z0-9\']/;
    var symbolRE = /[-!#$%&*+.\/<=>?@\\^|~:\u03BB\u2192]/;
    var specialRE = /[(),;[\]`{}]/;
    var whiteCharRE = /[ \t\v\f]/; // newlines are handled in tokenizer

    function normal() {
      return function (source, setState) {
        if (source.eatWhile(whiteCharRE)) {
          return null;
        }

        var ch = source.next();
        if (specialRE.test(ch)) {
          if (ch == '{' && source.eat('-')) {
            var t = "comment";
            if (source.eat('#')) t = "meta";
            return switchState(source, setState, ncomment(t, 1));
          }
          return null;
        }

        if (ch == '\'') {
          if (source.eat('\\'))
            source.next();  // should handle other escapes here
          else
            source.next();

          if (source.eat('\''))
            return "string";
          return "error";
        }

        if (ch == '"') {
          return switchState(source, setState, stringLiteral);