HackMD/public/vendor/codemirror/mode/brainfuck/brainfuck.js

85 lines
2.1 KiB
JavaScript

// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://codemirror.net/LICENSE
// Brainfuck mode created by Michael Kaminsky https://github.com/mkaminsky11
(function(mod) {
if (typeof exports == "object" && typeof module == "object")
mod(require("../../lib/codemirror"))
else if (typeof define == "function" && define.amd)
define(["../../lib/codemirror"], mod)
else
mod(CodeMirror)
})(function(CodeMirror) {
"use strict"
var reserve = "><+-.,[]".split("");
/*
comments can be either:
placed behind lines
+++ this is a comment
where reserved characters cannot be used
or in a loop
[
this is ok to use [ ] and stuff
]
or preceded by #
*/
CodeMirror.defineMode("brainfuck", function() {
return {
startState: function() {
return {
commentLine: false,
left: 0,
right: 0,
commentLoop: false
}
},
token: function(stream, state) {
if (stream.eatSpace()) return null
if(stream.sol()){
state.commentLine = false;
}
var ch = stream.next().toString();
if(reserve.indexOf(ch) !== -1){
if(state.commentLine === true){
if(stream.eol()){
state.commentLine = false;
}
return "comment";
}
if(ch === "]" || ch === "["){
if(ch === "["){
state.left++;
}
else{
state.right++;
}
return "bracket";
}
else if(ch === "+" || ch === "-"){
return "keyword";
}
else if(ch === "<" || ch === ">"){
return "atom";
}
else if(ch === "." || ch === ","){
return "def";
}
}
else{
state.commentLine = true;
if(stream.eol()){
state.commentLine = false;
}
return "comment";
}
if(stream.eol()){
state.commentLine = false;
}
}
};
});
CodeMirror.defineMIME("text/x-brainfuck","brainfuck")
});