Incs/codemirror/mode/dockerfile/dockerfile.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"), require("../../addon/mode/simple"));
  else if (typeof define == "function" && define.amd) // AMD
    define(["../../lib/codemirror", "../../addon/mode/simple"], mod);
  else // Plain browser env
    mod(CodeMirror);
})(function(CodeMirror) {
  "use strict";

  var from = "from";
  var fromRegex = new RegExp("^(\\s*)\\b(" + from + ")\\b", "i");

  var shells = ["run", "cmd", "entrypoint", "shell"];
  var shellsAsArrayRegex = new RegExp("^(\\s*)(" + shells.join('|') + ")(\\s+\\[)", "i");

  var expose = "expose";
  var exposeRegex = new RegExp("^(\\s*)(" + expose + ")(\\s+)", "i");

  var others = [
    "arg", "from", "maintainer", "label", "env",
    "add", "copy", "volume", "user",
    "workdir", "onbuild", "stopsignal", "healthcheck", "shell"
  ];

  // Collect all Dockerfile directives
  var instructions = [from, expose].concat(shells).concat(others),
      instructionRegex = "(" + instructions.join('|') + ")",
      instructionOnlyLine = new RegExp("^(\\s*)" + instructionRegex + "(\\s*)(#.*)?$", "i"),
      instructionWithArguments = new RegExp("^(\\s*)" + instructionRegex + "(\\s+)", "i");

  CodeMirror.defineSimpleMode("dockerfile", {
    start: [
      // Block comment: This is a line starting with a comment
      {
        regex: /^\s*#.*$/,
        sol: true,
        token: "comment"
      },
      {
        regex: fromRegex,
        token: [null, "keyword"],
        sol: true,
        next: "from"
      },
      // Highlight an instruction without any arguments (for convenience)
      {
        regex: instructionOnlyLine,
        token: [null, "keyword", null, "error"],
        sol: true
      },
      {
        regex: shellsAsArrayRegex,
        token: [null, "keyword", null],
        sol: true,
        next: "array"
      },