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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/LICENSE
   3  
   4  (function(mod) {
   5    if (typeof exports == "object" && typeof module == "object") // CommonJS
   6      mod(require("../../lib/codemirror"));
   7    else if (typeof define == "function" && define.amd) // AMD
   8      define(["../../lib/codemirror"], mod);
   9    else // Plain browser env
  10      mod(CodeMirror);
  11  })(function(CodeMirror) {
  12    "use strict";
  13  
  14    function wordRegexp(words) {
  15      return new RegExp("^((" + words.join(")|(") + "))\\b", "i");
  16    };
  17  
  18    var keywordArray = [
  19      "package", "message", "import", "syntax",
  20      "required", "optional", "repeated", "reserved", "default", "extensions", "packed",
  21      "bool", "bytes", "double", "enum", "float", "string",
  22      "int32", "int64", "uint32", "uint64", "sint32", "sint64", "fixed32", "fixed64", "sfixed32", "sfixed64",
  23      "option", "service", "rpc", "returns"
  24    ];
  25    var keywords = wordRegexp(keywordArray);
  26  
  27    CodeMirror.registerHelper("hintWords", "protobuf", keywordArray);
  28  
  29    var identifiers = new RegExp("^[_A-Za-z\xa1-\uffff][_A-Za-z0-9\xa1-\uffff]*");
  30  
  31    function tokenBase(stream) {
  32      // whitespaces
  33      if (stream.eatSpace()) return null;
  34  
  35      // Handle one line Comments
  36      if (stream.match("//")) {
  37        stream.skipToEnd();
  38        return "comment";
  39      }
  40  
  41      // Handle Number Literals
  42      if (stream.match(/^[0-9\.+-]/, false)) {
  43        if (stream.match(/^[+-]?0x[0-9a-fA-F]+/))
  44          return "number";
  45        if (stream.match(/^[+-]?\d*\.\d+([EeDd][+-]?\d+)?/))
  46          return "number";
  47        if (stream.match(/^[+-]?\d+([EeDd][+-]?\d+)?/))
  48          return "number";
  49      }
  50  
  51      // Handle Strings
  52      if (stream.match(/^"([^"]|(""))*"/)) { return "string"; }
  53      if (stream.match(/^'([^']|(''))*'/)) { return "string"; }
  54  
  55      // Handle words
  56      if (stream.match(keywords)) { return "keyword"; }
  57      if (stream.match(identifiers)) { return "variable"; } ;
  58  
  59      // Handle non-detected items
  60      stream.next();
  61      return null;
  62    };
  63  
  64    CodeMirror.defineMode("protobuf", function() {
  65      return {
  66        token: tokenBase,
  67        fold: "brace"
  68      };
  69    });
  70  
  71    CodeMirror.defineMIME("text/x-protobuf", "protobuf");
  72  });