1// CodeMirror, copyright (c) by Marijn Haverbeke and others
 2// Distributed under an MIT license: https://codemirror.net/LICENSE
 3
 4// Brainfuck mode created by Michael Kaminsky https://github.com/mkaminsky11
 5
 6(function(mod) {
 7  if (typeof exports == "object" && typeof module == "object")
 8    mod(require("../../lib/codemirror"))
 9  else if (typeof define == "function" && define.amd)
10    define(["../../lib/codemirror"], mod)
11  else
12    mod(CodeMirror)
13})(function(CodeMirror) {
14  "use strict"
15  var reserve = "><+-.,[]".split("");
16  /*
17  comments can be either:
18  placed behind lines
19
20        +++    this is a comment
21
22  where reserved characters cannot be used
23  or in a loop
24  [
25    this is ok to use [ ] and stuff
26  ]
27  or preceded by #
28  */
29  CodeMirror.defineMode("brainfuck", function() {
30    return {
31      startState: function() {
32        return {
33          commentLine: false,
34          left: 0,
35          right: 0,
36          commentLoop: false
37        }
38      },
39      token: function(stream, state) {
40        if (stream.eatSpace()) return null
41        if(stream.sol()){
42          state.commentLine = false;
43        }
44        var ch = stream.next().toString();
45        if(reserve.indexOf(ch) !== -1){
46          if(state.commentLine === true){
47            if(stream.eol()){
48              state.commentLine = false;
49            }
50            return "comment";
51          }
52          if(ch === "]" || ch === "["){
53            if(ch === "["){
54              state.left++;
55            }
56            else{
57              state.right++;
58            }
59            return "bracket";
60          }
61          else if(ch === "+" || ch === "-"){
62            return "keyword";
63          }
64          else if(ch === "<" || ch === ">"){
65            return "atom";
66          }
67          else if(ch === "." || ch === ","){
68            return "def";
69          }
70        }
71        else{
72          state.commentLine = true;
73          if(stream.eol()){
74            state.commentLine = false;
75          }
76          return "comment";
77        }
78        if(stream.eol()){
79          state.commentLine = false;
80        }
81      }
82    };
83  });
84CodeMirror.defineMIME("text/x-brainfuck","brainfuck")
85});